./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted/NestedRecursion_1b.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/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_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted/NestedRecursion_1b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/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_268a7103-0108-4c81-abaa-d881c94f6a51/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 9948dbd77aeb2de72e0bd3a3a4e22b1606b19383e4631af58adbec46ed909b6c --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:59:40,830 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:59:40,930 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Termination-64bit-Automizer_Default.epf [2023-11-26 11:59:40,942 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:59:40,943 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:59:40,983 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:59:40,985 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:59:40,985 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:59:40,986 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:59:40,992 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:59:40,992 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:59:40,993 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:59:40,993 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:59:40,996 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-11-26 11:59:40,996 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-11-26 11:59:40,997 INFO L153 SettingsManager]: * Use old map elimination=false [2023-11-26 11:59:40,997 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2023-11-26 11:59:40,999 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2023-11-26 11:59:40,999 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-11-26 11:59:41,000 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:59:41,001 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-11-26 11:59:41,002 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:59:41,002 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:59:41,003 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-11-26 11:59:41,003 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-11-26 11:59:41,004 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-11-26 11:59:41,004 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 11:59:41,005 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:59:41,005 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-11-26 11:59:41,006 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:59:41,007 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:59:41,007 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:59:41,007 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:59:41,007 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:59:41,008 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-11-26 11:59:41,008 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_268a7103-0108-4c81-abaa-d881c94f6a51/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9948dbd77aeb2de72e0bd3a3a4e22b1606b19383e4631af58adbec46ed909b6c [2023-11-26 11:59:41,306 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:59:41,337 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:59:41,340 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:59:41,342 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:59:41,342 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:59:41,344 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/termination-crafted/NestedRecursion_1b.c [2023-11-26 11:59:44,495 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:59:44,704 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:59:44,706 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/sv-benchmarks/c/termination-crafted/NestedRecursion_1b.c [2023-11-26 11:59:44,713 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/data/bb627600f/da9d29cda56f46ffa5e73c421f913924/FLAGf0743eb94 [2023-11-26 11:59:44,735 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/data/bb627600f/da9d29cda56f46ffa5e73c421f913924 [2023-11-26 11:59:44,737 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:59:44,739 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:59:44,740 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:59:44,741 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:59:44,746 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:59:44,746 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:59:44" (1/1) ... [2023-11-26 11:59:44,747 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c21501f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:59:44, skipping insertion in model container [2023-11-26 11:59:44,747 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:59:44" (1/1) ... [2023-11-26 11:59:44,765 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:59:44,927 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:59:44,933 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:59:44,944 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:59:44,957 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:59:44,958 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:59:44 WrapperNode [2023-11-26 11:59:44,958 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:59:44,959 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:59:44,960 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:59:44,960 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:59:44,968 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:59:44" (1/1) ... [2023-11-26 11:59:44,973 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:59:44" (1/1) ... [2023-11-26 11:59:44,990 INFO L138 Inliner]: procedures = 6, calls = 8, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 7 [2023-11-26 11:59:44,991 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:59:44,992 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:59:44,992 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:59:44,992 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:59:45,002 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:59:44" (1/1) ... [2023-11-26 11:59:45,003 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:59:44" (1/1) ... [2023-11-26 11:59:45,004 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:59:44" (1/1) ... [2023-11-26 11:59:45,010 INFO L175 MemorySlicer]: No memory access in input program. [2023-11-26 11:59:45,010 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:59:44" (1/1) ... [2023-11-26 11:59:45,010 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:59:44" (1/1) ... [2023-11-26 11:59:45,012 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:59:44" (1/1) ... [2023-11-26 11:59:45,014 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:59:44" (1/1) ... [2023-11-26 11:59:45,014 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:59:44" (1/1) ... [2023-11-26 11:59:45,015 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:59:44" (1/1) ... [2023-11-26 11:59:45,016 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:59:45,017 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:59:45,017 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:59:45,017 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:59:45,018 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:59:44" (1/1) ... [2023-11-26 11:59:45,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:59:45,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:59:45,055 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:59:45,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-11-26 11:59:45,098 INFO L130 BoogieDeclarations]: Found specification of procedure rec1 [2023-11-26 11:59:45,099 INFO L138 BoogieDeclarations]: Found implementation of procedure rec1 [2023-11-26 11:59:45,099 INFO L130 BoogieDeclarations]: Found specification of procedure rec2 [2023-11-26 11:59:45,100 INFO L138 BoogieDeclarations]: Found implementation of procedure rec2 [2023-11-26 11:59:45,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:59:45,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:59:45,175 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:59:45,185 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:59:45,330 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:59:45,353 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:59:45,353 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-26 11:59:45,355 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:59:45 BoogieIcfgContainer [2023-11-26 11:59:45,355 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:59:45,356 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-11-26 11:59:45,356 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-11-26 11:59:45,360 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-11-26 11:59:45,361 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-26 11:59:45,365 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 26.11 11:59:44" (1/3) ... [2023-11-26 11:59:45,366 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5ba12715 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.11 11:59:45, skipping insertion in model container [2023-11-26 11:59:45,366 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-26 11:59:45,366 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:59:44" (2/3) ... [2023-11-26 11:59:45,367 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5ba12715 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.11 11:59:45, skipping insertion in model container [2023-11-26 11:59:45,367 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-26 11:59:45,367 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:59:45" (3/3) ... [2023-11-26 11:59:45,368 INFO L332 chiAutomizerObserver]: Analyzing ICFG NestedRecursion_1b.c [2023-11-26 11:59:45,445 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-11-26 11:59:45,446 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-11-26 11:59:45,446 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-11-26 11:59:45,447 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-11-26 11:59:45,447 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-11-26 11:59:45,447 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-11-26 11:59:45,447 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-11-26 11:59:45,448 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-11-26 11:59:45,452 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 22 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-26 11:59:45,479 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 9 [2023-11-26 11:59:45,479 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-26 11:59:45,479 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-26 11:59:45,485 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-11-26 11:59:45,485 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:59:45,486 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-11-26 11:59:45,486 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 22 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-26 11:59:45,489 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 9 [2023-11-26 11:59:45,489 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-26 11:59:45,490 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-26 11:59:45,490 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-11-26 11:59:45,490 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:59:45,497 INFO L748 eck$LassoCheckResult]: Stem: 21#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true; 14#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet5#1, main_#t~ret6#1, main_~x~0#1;havoc main_#t~nondet5#1;main_~x~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1; 10#L25true call main_#t~ret6#1 := rec2(main_~x~0#1);< 7#$Ultimate##0true [2023-11-26 11:59:45,497 INFO L750 eck$LassoCheckResult]: Loop: 7#$Ultimate##0true ~j := #in~j; 17#L18true assume !(~j <= 0); 20#L20true call #t~ret3 := rec1(~j - 1);< 4#$Ultimate##0true ~i := #in~i; 18#L12true assume ~i <= 0;#res := 0; 15#rec1FINALtrue assume true; 16#rec1EXITtrue >#34#return; 3#L20-1true call #t~ret4 := rec2(#t~ret3);< 7#$Ultimate##0true [2023-11-26 11:59:45,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:59:45,504 INFO L85 PathProgramCache]: Analyzing trace with hash 48738, now seen corresponding path program 1 times [2023-11-26 11:59:45,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:59:45,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903747653] [2023-11-26 11:59:45,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:59:45,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:59:45,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:59:45,607 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 11:59:45,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:59:45,637 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 11:59:45,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:59:45,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1074209557, now seen corresponding path program 1 times [2023-11-26 11:59:45,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:59:45,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542807860] [2023-11-26 11:59:45,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:59:45,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:59:45,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:59:45,658 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 11:59:45,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:59:45,667 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 11:59:45,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:59:45,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1203131828, now seen corresponding path program 1 times [2023-11-26 11:59:45,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:59:45,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734172040] [2023-11-26 11:59:45,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:59:45,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:59:45,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:59:45,682 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 11:59:45,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:59:45,701 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 11:59:45,981 INFO L210 LassoAnalysis]: Preferences: [2023-11-26 11:59:45,981 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-26 11:59:45,981 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-26 11:59:45,982 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-26 11:59:45,982 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-26 11:59:45,982 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:59:45,982 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-26 11:59:45,982 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-26 11:59:45,983 INFO L133 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_1b.c_Iteration1_Loop [2023-11-26 11:59:45,983 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-26 11:59:45,983 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-26 11:59:45,998 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 11:59:46,010 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 11:59:46,015 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 11:59:46,021 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 11:59:46,034 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 11:59:46,093 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-26 11:59:46,093 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-26 11:59:46,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:59:46,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:59:46,102 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:59:46,114 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 11:59:46,115 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 11:59:46,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2023-11-26 11:59:46,131 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-26 11:59:46,131 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec2_~j=0} Honda state: {rec2_~j=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-26 11:59:46,143 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2023-11-26 11:59:46,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:59:46,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:59:46,148 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:59:46,163 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 11:59:46,163 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 11:59:46,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2023-11-26 11:59:46,177 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-26 11:59:46,177 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec2_#res=0} Honda state: {rec2_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-26 11:59:46,190 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2023-11-26 11:59:46,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:59:46,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:59:46,193 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:59:46,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2023-11-26 11:59:46,202 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 11:59:46,202 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 11:59:46,219 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-26 11:59:46,220 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec2_#t~ret4=0} Honda state: {rec2_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-26 11:59:46,227 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2023-11-26 11:59:46,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:59:46,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:59:46,229 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:59:46,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2023-11-26 11:59:46,234 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 11:59:46,234 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 11:59:46,253 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2023-11-26 11:59:46,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:59:46,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:59:46,256 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:59:46,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2023-11-26 11:59:46,262 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-26 11:59:46,262 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 11:59:46,285 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-26 11:59:46,289 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2023-11-26 11:59:46,290 INFO L210 LassoAnalysis]: Preferences: [2023-11-26 11:59:46,290 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-26 11:59:46,290 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-26 11:59:46,290 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-26 11:59:46,290 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-26 11:59:46,291 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:59:46,291 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-26 11:59:46,291 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-26 11:59:46,291 INFO L133 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_1b.c_Iteration1_Loop [2023-11-26 11:59:46,291 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-26 11:59:46,291 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-26 11:59:46,293 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 11:59:46,306 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 11:59:46,309 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 11:59:46,312 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 11:59:46,320 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 11:59:46,366 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-26 11:59:46,372 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-26 11:59:46,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:59:46,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:59:46,381 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:59:46,389 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 11:59:46,402 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-26 11:59:46,403 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-26 11:59:46,403 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-26 11:59:46,404 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-26 11:59:46,404 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-26 11:59:46,406 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-26 11:59:46,406 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-26 11:59:46,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2023-11-26 11:59:46,422 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-26 11:59:46,431 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2023-11-26 11:59:46,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:59:46,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:59:46,433 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:59:46,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2023-11-26 11:59:46,443 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 11:59:46,458 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-26 11:59:46,458 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-26 11:59:46,458 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-26 11:59:46,458 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-26 11:59:46,459 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-26 11:59:46,460 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-26 11:59:46,461 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-26 11:59:46,471 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-26 11:59:46,477 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2023-11-26 11:59:46,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:59:46,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:59:46,480 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:59:46,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2023-11-26 11:59:46,491 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 11:59:46,503 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-26 11:59:46,503 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-26 11:59:46,504 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-26 11:59:46,504 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-26 11:59:46,504 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-26 11:59:46,505 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-26 11:59:46,505 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-26 11:59:46,514 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-26 11:59:46,523 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2023-11-26 11:59:46,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:59:46,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:59:46,525 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:59:46,534 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-26 11:59:46,547 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-26 11:59:46,547 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-26 11:59:46,547 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-26 11:59:46,547 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-26 11:59:46,547 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-26 11:59:46,551 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-26 11:59:46,551 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-26 11:59:46,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2023-11-26 11:59:46,566 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-26 11:59:46,569 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-26 11:59:46,570 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-26 11:59:46,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:59:46,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:59:46,614 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:59:46,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2023-11-26 11:59:46,619 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-26 11:59:46,620 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-26 11:59:46,620 INFO L513 LassoAnalysis]: Proved termination. [2023-11-26 11:59:46,620 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(rec2_#in~j) = 1*rec2_#in~j Supporting invariants [] [2023-11-26 11:59:46,625 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2023-11-26 11:59:46,629 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-26 11:59:46,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:59:46,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:46,695 INFO L262 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 11:59:46,696 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:59:46,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:46,747 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-26 11:59:46,754 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:59:46,897 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 11:59:46,950 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 6 loop predicates [2023-11-26 11:59:46,952 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 22 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 7 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:59:47,487 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 22 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6). Second operand has 7 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Result 195 states and 280 transitions. Complement of second has 61 states. [2023-11-26 11:59:47,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 11 states 1 stem states 9 non-accepting loop states 1 accepting loop states [2023-11-26 11:59:47,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:59:47,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 58 transitions. [2023-11-26 11:59:47,501 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states and 58 transitions. Stem has 3 letters. Loop has 8 letters. [2023-11-26 11:59:47,505 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 11:59:47,505 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states and 58 transitions. Stem has 11 letters. Loop has 8 letters. [2023-11-26 11:59:47,506 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 11:59:47,506 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states and 58 transitions. Stem has 3 letters. Loop has 16 letters. [2023-11-26 11:59:47,507 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 11:59:47,507 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 195 states and 280 transitions. [2023-11-26 11:59:47,524 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 9 [2023-11-26 11:59:47,535 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 195 states to 83 states and 121 transitions. [2023-11-26 11:59:47,536 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 36 [2023-11-26 11:59:47,537 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 39 [2023-11-26 11:59:47,537 INFO L73 IsDeterministic]: Start isDeterministic. Operand 83 states and 121 transitions. [2023-11-26 11:59:47,538 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-26 11:59:47,538 INFO L218 hiAutomatonCegarLoop]: Abstraction has 83 states and 121 transitions. [2023-11-26 11:59:47,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states and 121 transitions. [2023-11-26 11:59:47,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 56. [2023-11-26 11:59:47,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 32 states have internal predecessors, (34), 20 states have call successors, (20), 8 states have call predecessors, (20), 7 states have return successors, (30), 15 states have call predecessors, (30), 16 states have call successors, (30) [2023-11-26 11:59:47,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 84 transitions. [2023-11-26 11:59:47,580 INFO L240 hiAutomatonCegarLoop]: Abstraction has 56 states and 84 transitions. [2023-11-26 11:59:47,580 INFO L428 stractBuchiCegarLoop]: Abstraction has 56 states and 84 transitions. [2023-11-26 11:59:47,580 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-11-26 11:59:47,580 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 56 states and 84 transitions. [2023-11-26 11:59:47,582 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 9 [2023-11-26 11:59:47,582 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-26 11:59:47,582 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-26 11:59:47,583 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:59:47,583 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-11-26 11:59:47,583 INFO L748 eck$LassoCheckResult]: Stem: 391#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 384#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet5#1, main_#t~ret6#1, main_~x~0#1;havoc main_#t~nondet5#1;main_~x~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1; 351#L25 call main_#t~ret6#1 := rec2(main_~x~0#1);< 360#$Ultimate##0 ~j := #in~j; 362#L18 assume !(~j <= 0); 355#L20 call #t~ret3 := rec1(~j - 1);< 354#$Ultimate##0 ~i := #in~i; 356#L12 assume !(~i <= 0); 367#L14 call #t~ret0 := rec1(~i - 2);< 382#$Ultimate##0 [2023-11-26 11:59:47,584 INFO L750 eck$LassoCheckResult]: Loop: 382#$Ultimate##0 ~i := #in~i; 397#L12 assume !(~i <= 0); 370#L14 call #t~ret0 := rec1(~i - 2);< 382#$Ultimate##0 [2023-11-26 11:59:47,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:59:47,584 INFO L85 PathProgramCache]: Analyzing trace with hash 838970620, now seen corresponding path program 1 times [2023-11-26 11:59:47,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:59:47,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486688315] [2023-11-26 11:59:47,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:59:47,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:59:47,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:59:47,594 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 11:59:47,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:59:47,601 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 11:59:47,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:59:47,602 INFO L85 PathProgramCache]: Analyzing trace with hash 29942, now seen corresponding path program 1 times [2023-11-26 11:59:47,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:59:47,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455102449] [2023-11-26 11:59:47,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:59:47,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:59:47,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:59:47,607 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 11:59:47,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:59:47,612 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 11:59:47,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:59:47,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1359045147, now seen corresponding path program 2 times [2023-11-26 11:59:47,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:59:47,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731998215] [2023-11-26 11:59:47,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:59:47,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:59:47,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:59:47,622 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 11:59:47,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:59:47,631 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 11:59:47,665 INFO L210 LassoAnalysis]: Preferences: [2023-11-26 11:59:47,666 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-26 11:59:47,666 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-26 11:59:47,666 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-26 11:59:47,666 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-26 11:59:47,666 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:59:47,666 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-26 11:59:47,666 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-26 11:59:47,666 INFO L133 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_1b.c_Iteration2_Loop [2023-11-26 11:59:47,666 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-26 11:59:47,667 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-26 11:59:47,668 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 11:59:47,670 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 11:59:47,672 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 11:59:47,675 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 11:59:47,678 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 11:59:47,680 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 11:59:47,714 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-26 11:59:47,714 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-26 11:59:47,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:59:47,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:59:47,715 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:59:47,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2023-11-26 11:59:47,728 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 11:59:47,728 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 11:59:47,750 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-26 11:59:47,751 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec1_#res=0} Honda state: {rec1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-26 11:59:47,755 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2023-11-26 11:59:47,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:59:47,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:59:47,785 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:59:47,787 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2023-11-26 11:59:47,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2023-11-26 11:59:47,790 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 11:59:47,790 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 11:59:47,821 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-26 11:59:47,821 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec1_~i=0} Honda state: {rec1_~i=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-26 11:59:47,827 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2023-11-26 11:59:47,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:59:47,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:59:47,829 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:59:47,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2023-11-26 11:59:47,838 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 11:59:47,841 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 11:59:47,855 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-26 11:59:47,855 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec1_#t~ret0=0} Honda state: {rec1_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-26 11:59:47,862 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2023-11-26 11:59:47,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:59:47,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:59:47,864 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:59:47,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2023-11-26 11:59:47,866 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 11:59:47,867 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 11:59:47,879 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-26 11:59:47,879 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec1_#t~ret1=0} Honda state: {rec1_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-26 11:59:47,886 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2023-11-26 11:59:47,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:59:47,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:59:47,887 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:59:47,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2023-11-26 11:59:47,891 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 11:59:47,891 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 11:59:47,903 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-26 11:59:47,903 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec1_#t~ret2=0} Honda state: {rec1_#t~ret2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-26 11:59:47,913 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2023-11-26 11:59:47,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:59:47,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:59:47,915 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:59:47,924 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 11:59:47,924 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 11:59:47,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2023-11-26 11:59:47,942 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2023-11-26 11:59:47,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:59:47,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:59:47,943 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:59:47,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2023-11-26 11:59:47,946 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-26 11:59:47,946 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 11:59:48,015 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-26 11:59:48,019 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2023-11-26 11:59:48,019 INFO L210 LassoAnalysis]: Preferences: [2023-11-26 11:59:48,019 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-26 11:59:48,019 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-26 11:59:48,019 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-26 11:59:48,019 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-26 11:59:48,019 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:59:48,019 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-26 11:59:48,020 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-26 11:59:48,020 INFO L133 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_1b.c_Iteration2_Loop [2023-11-26 11:59:48,020 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-26 11:59:48,020 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-26 11:59:48,021 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 11:59:48,024 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 11:59:48,027 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 11:59:48,030 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 11:59:48,033 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 11:59:48,039 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 11:59:48,074 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-26 11:59:48,074 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-26 11:59:48,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:59:48,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:59:48,076 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:59:48,094 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 11:59:48,107 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-26 11:59:48,107 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-26 11:59:48,108 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-26 11:59:48,108 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-26 11:59:48,108 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-26 11:59:48,108 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-26 11:59:48,109 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-26 11:59:48,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2023-11-26 11:59:48,125 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-26 11:59:48,134 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2023-11-26 11:59:48,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:59:48,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:59:48,136 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:59:48,143 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 11:59:48,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2023-11-26 11:59:48,153 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-26 11:59:48,154 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-26 11:59:48,154 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-26 11:59:48,154 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-26 11:59:48,154 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-26 11:59:48,155 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-26 11:59:48,155 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-26 11:59:48,166 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-26 11:59:48,182 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2023-11-26 11:59:48,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:59:48,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:59:48,186 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:59:48,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2023-11-26 11:59:48,190 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 11:59:48,200 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-26 11:59:48,201 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-26 11:59:48,201 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-26 11:59:48,201 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-26 11:59:48,201 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-26 11:59:48,206 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-26 11:59:48,206 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-26 11:59:48,225 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-26 11:59:48,232 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2023-11-26 11:59:48,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:59:48,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:59:48,233 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:59:48,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2023-11-26 11:59:48,239 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 11:59:48,251 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-26 11:59:48,251 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-26 11:59:48,252 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-26 11:59:48,252 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-26 11:59:48,252 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-26 11:59:48,253 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-26 11:59:48,253 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-26 11:59:48,269 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-26 11:59:48,277 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2023-11-26 11:59:48,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:59:48,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:59:48,279 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:59:48,286 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 11:59:48,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2023-11-26 11:59:48,299 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-26 11:59:48,299 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-26 11:59:48,299 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-26 11:59:48,299 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-26 11:59:48,299 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-26 11:59:48,300 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-26 11:59:48,300 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-26 11:59:48,310 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-26 11:59:48,312 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2023-11-26 11:59:48,312 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-26 11:59:48,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:59:48,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:59:48,314 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:59:48,324 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-26 11:59:48,324 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-26 11:59:48,324 INFO L513 LassoAnalysis]: Proved termination. [2023-11-26 11:59:48,325 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(rec1_#in~i) = 1*rec1_#in~i Supporting invariants [] [2023-11-26 11:59:48,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2023-11-26 11:59:48,334 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2023-11-26 11:59:48,335 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-26 11:59:48,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:59:48,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:48,377 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 11:59:48,380 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:59:48,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:48,422 INFO L262 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-26 11:59:48,423 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:59:48,455 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 11:59:48,455 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2023-11-26 11:59:48,456 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 56 states and 84 transitions. cyclomatic complexity: 32 Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (4), 2 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:59:48,530 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 56 states and 84 transitions. cyclomatic complexity: 32. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (4), 2 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 106 states and 150 transitions. Complement of second has 13 states. [2023-11-26 11:59:48,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2023-11-26 11:59:48,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (4), 2 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:59:48,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2023-11-26 11:59:48,533 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 9 letters. Loop has 3 letters. [2023-11-26 11:59:48,533 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 11:59:48,533 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 12 letters. Loop has 3 letters. [2023-11-26 11:59:48,533 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 11:59:48,533 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 9 letters. Loop has 6 letters. [2023-11-26 11:59:48,533 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 11:59:48,534 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 106 states and 150 transitions. [2023-11-26 11:59:48,538 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 9 [2023-11-26 11:59:48,542 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 106 states to 94 states and 138 transitions. [2023-11-26 11:59:48,543 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 38 [2023-11-26 11:59:48,543 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 40 [2023-11-26 11:59:48,543 INFO L73 IsDeterministic]: Start isDeterministic. Operand 94 states and 138 transitions. [2023-11-26 11:59:48,544 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-26 11:59:48,545 INFO L218 hiAutomatonCegarLoop]: Abstraction has 94 states and 138 transitions. [2023-11-26 11:59:48,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states and 138 transitions. [2023-11-26 11:59:48,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 90. [2023-11-26 11:59:48,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 51 states have (on average 1.2156862745098038) internal successors, (62), 58 states have internal predecessors, (62), 27 states have call successors, (27), 15 states have call predecessors, (27), 12 states have return successors, (41), 16 states have call predecessors, (41), 22 states have call successors, (41) [2023-11-26 11:59:48,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 130 transitions. [2023-11-26 11:59:48,559 INFO L240 hiAutomatonCegarLoop]: Abstraction has 90 states and 130 transitions. [2023-11-26 11:59:48,559 INFO L428 stractBuchiCegarLoop]: Abstraction has 90 states and 130 transitions. [2023-11-26 11:59:48,559 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-11-26 11:59:48,559 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 90 states and 130 transitions. [2023-11-26 11:59:48,561 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 9 [2023-11-26 11:59:48,561 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-26 11:59:48,561 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-26 11:59:48,562 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:59:48,562 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-11-26 11:59:48,562 INFO L748 eck$LassoCheckResult]: Stem: 629#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 619#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet5#1, main_#t~ret6#1, main_~x~0#1;havoc main_#t~nondet5#1;main_~x~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1; 579#L25 call main_#t~ret6#1 := rec2(main_~x~0#1);< 615#$Ultimate##0 ~j := #in~j; 593#L18 assume !(~j <= 0); 585#L20 call #t~ret3 := rec1(~j - 1);< 584#$Ultimate##0 ~i := #in~i; 586#L12 assume !(~i <= 0); 596#L14 call #t~ret0 := rec1(~i - 2);< 626#$Ultimate##0 ~i := #in~i; 643#L12 assume ~i <= 0;#res := 0; 641#rec1FINAL assume true; 640#rec1EXIT >#28#return; 603#L14-1 call #t~ret1 := rec1(#t~ret0 - 1);< 617#$Ultimate##0 [2023-11-26 11:59:48,563 INFO L750 eck$LassoCheckResult]: Loop: 617#$Ultimate##0 ~i := #in~i; 638#L12 assume !(~i <= 0); 598#L14 call #t~ret0 := rec1(~i - 2);< 617#$Ultimate##0 [2023-11-26 11:59:48,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:59:48,563 INFO L85 PathProgramCache]: Analyzing trace with hash 372282091, now seen corresponding path program 1 times [2023-11-26 11:59:48,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:59:48,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043266660] [2023-11-26 11:59:48,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:59:48,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:59:48,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:59:48,573 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 11:59:48,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:59:48,590 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 11:59:48,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:59:48,591 INFO L85 PathProgramCache]: Analyzing trace with hash 29942, now seen corresponding path program 2 times [2023-11-26 11:59:48,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:59:48,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625052474] [2023-11-26 11:59:48,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:59:48,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:59:48,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:59:48,595 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 11:59:48,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:59:48,598 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 11:59:48,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:59:48,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1050214860, now seen corresponding path program 2 times [2023-11-26 11:59:48,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:59:48,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854484342] [2023-11-26 11:59:48,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:59:48,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:59:48,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:48,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 11:59:48,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:48,739 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 11:59:48,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:59:48,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854484342] [2023-11-26 11:59:48,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854484342] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:59:48,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:59:48,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 11:59:48,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216462759] [2023-11-26 11:59:48,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:59:48,775 INFO L210 LassoAnalysis]: Preferences: [2023-11-26 11:59:48,776 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-26 11:59:48,776 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-26 11:59:48,776 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-26 11:59:48,776 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-26 11:59:48,776 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:59:48,776 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-26 11:59:48,776 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-26 11:59:48,776 INFO L133 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_1b.c_Iteration3_Loop [2023-11-26 11:59:48,776 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-26 11:59:48,776 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-26 11:59:48,778 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 11:59:48,781 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 11:59:48,789 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 11:59:48,791 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 11:59:48,794 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 11:59:48,797 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 11:59:48,829 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-26 11:59:48,829 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-26 11:59:48,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:59:48,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:59:48,831 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:59:48,835 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 11:59:48,835 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 11:59:48,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2023-11-26 11:59:48,857 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-26 11:59:48,857 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec1_#t~ret2=0} Honda state: {rec1_#t~ret2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-26 11:59:48,861 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2023-11-26 11:59:48,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:59:48,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:59:48,863 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:59:48,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2023-11-26 11:59:48,872 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 11:59:48,873 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 11:59:48,909 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2023-11-26 11:59:48,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:59:48,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:59:48,911 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:59:48,922 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-26 11:59:48,922 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 11:59:48,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2023-11-26 11:59:49,018 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-26 11:59:49,024 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2023-11-26 11:59:49,024 INFO L210 LassoAnalysis]: Preferences: [2023-11-26 11:59:49,024 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-26 11:59:49,024 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-26 11:59:49,024 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-26 11:59:49,024 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-26 11:59:49,024 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:59:49,024 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-26 11:59:49,024 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-26 11:59:49,025 INFO L133 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_1b.c_Iteration3_Loop [2023-11-26 11:59:49,025 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-26 11:59:49,025 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-26 11:59:49,026 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 11:59:49,033 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 11:59:49,036 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 11:59:49,038 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 11:59:49,041 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 11:59:49,043 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 11:59:49,076 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-26 11:59:49,076 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-26 11:59:49,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:59:49,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:59:49,078 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:59:49,082 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 11:59:49,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2023-11-26 11:59:49,095 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-26 11:59:49,095 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-26 11:59:49,095 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-26 11:59:49,095 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-26 11:59:49,095 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-26 11:59:49,097 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-26 11:59:49,097 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-26 11:59:49,106 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-26 11:59:49,109 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2023-11-26 11:59:49,109 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-26 11:59:49,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:59:49,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:59:49,113 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:59:49,115 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-26 11:59:49,115 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-26 11:59:49,115 INFO L513 LassoAnalysis]: Proved termination. [2023-11-26 11:59:49,115 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(rec1_#in~i) = 1*rec1_#in~i Supporting invariants [] [2023-11-26 11:59:49,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2023-11-26 11:59:49,124 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2023-11-26 11:59:49,125 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-26 11:59:49,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:59:49,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:49,169 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-26 11:59:49,171 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:59:49,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:49,256 INFO L262 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-26 11:59:49,257 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:59:49,283 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 11:59:49,284 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 11:59:49,284 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 90 states and 130 transitions. cyclomatic complexity: 47 Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:59:49,379 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 90 states and 130 transitions. cyclomatic complexity: 47. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Result 135 states and 194 transitions. Complement of second has 14 states. [2023-11-26 11:59:49,380 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 11:59:49,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:59:49,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 20 transitions. [2023-11-26 11:59:49,381 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 14 letters. Loop has 3 letters. [2023-11-26 11:59:49,382 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 11:59:49,382 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 17 letters. Loop has 3 letters. [2023-11-26 11:59:49,382 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 11:59:49,382 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 14 letters. Loop has 6 letters. [2023-11-26 11:59:49,382 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 11:59:49,383 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 135 states and 194 transitions. [2023-11-26 11:59:49,386 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 9 [2023-11-26 11:59:49,396 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 135 states to 123 states and 182 transitions. [2023-11-26 11:59:49,396 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 49 [2023-11-26 11:59:49,397 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 51 [2023-11-26 11:59:49,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 123 states and 182 transitions. [2023-11-26 11:59:49,397 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-26 11:59:49,397 INFO L218 hiAutomatonCegarLoop]: Abstraction has 123 states and 182 transitions. [2023-11-26 11:59:49,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states and 182 transitions. [2023-11-26 11:59:49,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 114. [2023-11-26 11:59:49,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 65 states have (on average 1.2307692307692308) internal successors, (80), 74 states have internal predecessors, (80), 33 states have call successors, (33), 19 states have call predecessors, (33), 16 states have return successors, (53), 20 states have call predecessors, (53), 28 states have call successors, (53) [2023-11-26 11:59:49,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 166 transitions. [2023-11-26 11:59:49,428 INFO L240 hiAutomatonCegarLoop]: Abstraction has 114 states and 166 transitions. [2023-11-26 11:59:49,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:59:49,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:59:49,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:59:49,433 INFO L87 Difference]: Start difference. First operand 114 states and 166 transitions. Second operand has 6 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:59:49,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:59:49,496 INFO L93 Difference]: Finished difference Result 124 states and 176 transitions. [2023-11-26 11:59:49,496 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 124 states and 176 transitions. [2023-11-26 11:59:49,505 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 11 [2023-11-26 11:59:49,514 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 124 states to 122 states and 174 transitions. [2023-11-26 11:59:49,515 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 56 [2023-11-26 11:59:49,517 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 56 [2023-11-26 11:59:49,517 INFO L73 IsDeterministic]: Start isDeterministic. Operand 122 states and 174 transitions. [2023-11-26 11:59:49,517 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-26 11:59:49,517 INFO L218 hiAutomatonCegarLoop]: Abstraction has 122 states and 174 transitions. [2023-11-26 11:59:49,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states and 174 transitions. [2023-11-26 11:59:49,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 102. [2023-11-26 11:59:49,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 57 states have (on average 1.1929824561403508) internal successors, (68), 64 states have internal predecessors, (68), 31 states have call successors, (31), 17 states have call predecessors, (31), 14 states have return successors, (45), 20 states have call predecessors, (45), 26 states have call successors, (45) [2023-11-26 11:59:49,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 144 transitions. [2023-11-26 11:59:49,533 INFO L240 hiAutomatonCegarLoop]: Abstraction has 102 states and 144 transitions. [2023-11-26 11:59:49,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 11:59:49,538 INFO L428 stractBuchiCegarLoop]: Abstraction has 102 states and 144 transitions. [2023-11-26 11:59:49,538 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2023-11-26 11:59:49,539 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 102 states and 144 transitions. [2023-11-26 11:59:49,542 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2023-11-26 11:59:49,542 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-26 11:59:49,542 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-26 11:59:49,545 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:59:49,545 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-26 11:59:49,545 INFO L748 eck$LassoCheckResult]: Stem: 1194#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 1177#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet5#1, main_#t~ret6#1, main_~x~0#1;havoc main_#t~nondet5#1;main_~x~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1; 1142#L25 call main_#t~ret6#1 := rec2(main_~x~0#1);< 1173#$Ultimate##0 ~j := #in~j; 1206#L18 assume !(~j <= 0); 1160#L20 call #t~ret3 := rec1(~j - 1);< 1205#$Ultimate##0 ~i := #in~i; 1204#L12 assume !(~i <= 0); 1183#L14 call #t~ret0 := rec1(~i - 2);< 1202#$Ultimate##0 ~i := #in~i; 1200#L12 assume !(~i <= 0); 1196#L14 call #t~ret0 := rec1(~i - 2);< 1199#$Ultimate##0 ~i := #in~i; 1201#L12 assume ~i <= 0;#res := 0; 1239#rec1FINAL assume true; 1240#rec1EXIT >#28#return; 1149#L14-1 [2023-11-26 11:59:49,545 INFO L750 eck$LassoCheckResult]: Loop: 1149#L14-1 call #t~ret1 := rec1(#t~ret0 - 1);< 1147#$Ultimate##0 ~i := #in~i; 1150#L12 assume ~i <= 0;#res := 0; 1178#rec1FINAL assume true; 1179#rec1EXIT >#30#return; 1187#L14-2 call #t~ret2 := rec1(#t~ret1);< 1175#$Ultimate##0 ~i := #in~i; 1237#L12 assume !(~i <= 0); 1186#L14 call #t~ret0 := rec1(~i - 2);< 1175#$Ultimate##0 ~i := #in~i; 1237#L12 assume ~i <= 0;#res := 0; 1236#rec1FINAL assume true; 1235#rec1EXIT >#28#return; 1149#L14-1 [2023-11-26 11:59:49,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:59:49,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1325197585, now seen corresponding path program 1 times [2023-11-26 11:59:49,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:59:49,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213401973] [2023-11-26 11:59:49,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:59:49,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:59:49,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:59:49,567 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 11:59:49,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:59:49,591 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 11:59:49,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:59:49,591 INFO L85 PathProgramCache]: Analyzing trace with hash 949089090, now seen corresponding path program 1 times [2023-11-26 11:59:49,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:59:49,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076149586] [2023-11-26 11:59:49,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:59:49,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:59:49,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:49,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-26 11:59:49,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:49,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 11:59:49,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:49,725 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 11:59:49,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:59:49,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076149586] [2023-11-26 11:59:49,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076149586] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:59:49,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1513624149] [2023-11-26 11:59:49,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:59:49,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:59:49,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:59:49,731 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:59:49,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-11-26 11:59:49,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:49,774 INFO L262 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 11:59:49,775 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:59:49,789 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:59:49,790 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:59:49,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1513624149] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:59:49,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:59:49,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 6 [2023-11-26 11:59:49,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906921289] [2023-11-26 11:59:49,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:59:49,791 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-26 11:59:49,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:59:49,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:59:49,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:59:49,792 INFO L87 Difference]: Start difference. First operand 102 states and 144 transitions. cyclomatic complexity: 49 Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-26 11:59:49,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:59:49,834 INFO L93 Difference]: Finished difference Result 118 states and 162 transitions. [2023-11-26 11:59:49,834 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 118 states and 162 transitions. [2023-11-26 11:59:49,837 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 9 [2023-11-26 11:59:49,840 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 118 states to 118 states and 162 transitions. [2023-11-26 11:59:49,840 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 54 [2023-11-26 11:59:49,841 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 54 [2023-11-26 11:59:49,841 INFO L73 IsDeterministic]: Start isDeterministic. Operand 118 states and 162 transitions. [2023-11-26 11:59:49,841 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-26 11:59:49,841 INFO L218 hiAutomatonCegarLoop]: Abstraction has 118 states and 162 transitions. [2023-11-26 11:59:49,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states and 162 transitions. [2023-11-26 11:59:49,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 114. [2023-11-26 11:59:49,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 63 states have (on average 1.1746031746031746) internal successors, (74), 70 states have internal predecessors, (74), 35 states have call successors, (35), 19 states have call predecessors, (35), 16 states have return successors, (49), 24 states have call predecessors, (49), 30 states have call successors, (49) [2023-11-26 11:59:49,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 158 transitions. [2023-11-26 11:59:49,859 INFO L240 hiAutomatonCegarLoop]: Abstraction has 114 states and 158 transitions. [2023-11-26 11:59:49,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 11:59:49,861 INFO L428 stractBuchiCegarLoop]: Abstraction has 114 states and 158 transitions. [2023-11-26 11:59:49,862 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2023-11-26 11:59:49,862 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 114 states and 158 transitions. [2023-11-26 11:59:49,876 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 9 [2023-11-26 11:59:49,876 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-26 11:59:49,876 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-26 11:59:49,877 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2023-11-26 11:59:49,883 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:59:49,883 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:59:49,883 INFO L748 eck$LassoCheckResult]: Stem: 1480#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 1467#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet5#1, main_#t~ret6#1, main_~x~0#1;havoc main_#t~nondet5#1;main_~x~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1; 1420#L25 call main_#t~ret6#1 := rec2(main_~x~0#1);< 1444#$Ultimate##0 ~j := #in~j; 1490#L18 assume !(~j <= 0); 1437#L20 call #t~ret3 := rec1(~j - 1);< 1489#$Ultimate##0 ~i := #in~i; 1488#L12 assume !(~i <= 0); 1451#L14 call #t~ret0 := rec1(~i - 2);< 1485#$Ultimate##0 ~i := #in~i; 1486#L12 assume ~i <= 0;#res := 0; 1532#rec1FINAL assume true; 1528#rec1EXIT >#28#return; 1513#L14-1 call #t~ret1 := rec1(#t~ret0 - 1);< 1455#$Ultimate##0 ~i := #in~i; 1517#L12 assume ~i <= 0;#res := 0; 1515#rec1FINAL assume true; 1512#rec1EXIT >#30#return; 1427#L14-2 call #t~ret2 := rec1(#t~ret1);< 1426#$Ultimate##0 ~i := #in~i; 1429#L12 assume ~i <= 0;#res := 0; 1468#rec1FINAL assume true; 1469#rec1EXIT >#32#return; 1436#L14-3 #res := 1 + #t~ret2;havoc #t~ret0;havoc #t~ret1;havoc #t~ret2; 1439#rec1FINAL assume true; 1482#rec1EXIT >#34#return; 1419#L20-1 [2023-11-26 11:59:49,884 INFO L750 eck$LassoCheckResult]: Loop: 1419#L20-1 call #t~ret4 := rec2(#t~ret3);< 1423#$Ultimate##0 ~j := #in~j; 1434#L18 assume !(~j <= 0); 1453#L20 call #t~ret3 := rec1(~j - 1);< 1477#$Ultimate##0 ~i := #in~i; 1518#L12 assume !(~i <= 0); 1448#L14 call #t~ret0 := rec1(~i - 2);< 1477#$Ultimate##0 ~i := #in~i; 1518#L12 assume ~i <= 0;#res := 0; 1516#rec1FINAL assume true; 1514#rec1EXIT >#28#return; 1445#L14-1 call #t~ret1 := rec1(#t~ret0 - 1);< 1455#$Ultimate##0 ~i := #in~i; 1517#L12 assume ~i <= 0;#res := 0; 1515#rec1FINAL assume true; 1512#rec1EXIT >#30#return; 1428#L14-2 call #t~ret2 := rec1(#t~ret1);< 1426#$Ultimate##0 ~i := #in~i; 1429#L12 assume ~i <= 0;#res := 0; 1468#rec1FINAL assume true; 1469#rec1EXIT >#32#return; 1472#L14-3 #res := 1 + #t~ret2;havoc #t~ret0;havoc #t~ret1;havoc #t~ret2; 1494#rec1FINAL assume true; 1481#rec1EXIT >#34#return; 1419#L20-1 [2023-11-26 11:59:49,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:59:49,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1231361643, now seen corresponding path program 1 times [2023-11-26 11:59:49,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:59:49,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146512688] [2023-11-26 11:59:49,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:59:49,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:59:49,888 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2023-11-26 11:59:49,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:59:49,916 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 11:59:49,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:59:49,932 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 11:59:49,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:59:49,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1591101301, now seen corresponding path program 1 times [2023-11-26 11:59:49,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:59:49,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020635679] [2023-11-26 11:59:49,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:59:49,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:59:49,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:59:49,949 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 11:59:49,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:59:49,970 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 11:59:49,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:59:49,971 INFO L85 PathProgramCache]: Analyzing trace with hash 774680821, now seen corresponding path program 1 times [2023-11-26 11:59:49,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:59:49,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17524132] [2023-11-26 11:59:49,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:59:49,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:59:49,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:50,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:59:50,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:50,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 11:59:50,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:50,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-26 11:59:50,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:50,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-26 11:59:50,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:50,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-26 11:59:50,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:50,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 11:59:50,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:50,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-26 11:59:50,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:50,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-26 11:59:50,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:50,245 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 28 proven. 22 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2023-11-26 11:59:50,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:59:50,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17524132] [2023-11-26 11:59:50,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17524132] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:59:50,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1584257761] [2023-11-26 11:59:50,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:59:50,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:59:50,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:59:50,250 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:59:50,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-11-26 11:59:50,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:50,314 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-26 11:59:50,319 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:59:50,402 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 28 proven. 22 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2023-11-26 11:59:50,403 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:59:50,623 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 28 proven. 22 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2023-11-26 11:59:50,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1584257761] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:59:50,624 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:59:50,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 12 [2023-11-26 11:59:50,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845567403] [2023-11-26 11:59:50,625 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:59:50,973 INFO L210 LassoAnalysis]: Preferences: [2023-11-26 11:59:50,973 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-26 11:59:50,973 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-26 11:59:50,973 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-26 11:59:50,973 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-26 11:59:50,973 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:59:50,974 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-26 11:59:50,974 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-26 11:59:50,974 INFO L133 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_1b.c_Iteration5_Loop [2023-11-26 11:59:50,974 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-26 11:59:50,974 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-26 11:59:50,975 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 11:59:50,985 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 11:59:50,988 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 11:59:51,024 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-26 11:59:51,024 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-26 11:59:51,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:59:51,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:59:51,026 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:59:51,034 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 11:59:51,034 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 11:59:51,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2023-11-26 11:59:51,072 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2023-11-26 11:59:51,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:59:51,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:59:51,073 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:59:51,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2023-11-26 11:59:51,077 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-26 11:59:51,077 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 11:59:53,276 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-26 11:59:53,281 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2023-11-26 11:59:53,282 INFO L210 LassoAnalysis]: Preferences: [2023-11-26 11:59:53,282 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-26 11:59:53,282 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-26 11:59:53,282 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-26 11:59:53,282 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-26 11:59:53,282 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:59:53,282 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-26 11:59:53,282 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-26 11:59:53,282 INFO L133 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_1b.c_Iteration5_Loop [2023-11-26 11:59:53,282 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-26 11:59:53,282 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-26 11:59:53,284 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 11:59:53,294 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 11:59:53,297 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 11:59:53,345 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-26 11:59:53,345 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-26 11:59:53,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:59:53,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:59:53,347 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:59:53,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2023-11-26 11:59:53,354 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 11:59:53,364 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-26 11:59:53,364 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-26 11:59:53,364 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-26 11:59:53,364 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-26 11:59:53,365 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-26 11:59:53,367 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-26 11:59:53,367 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-26 11:59:53,375 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-26 11:59:53,382 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-26 11:59:53,382 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-26 11:59:53,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:59:53,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:59:53,389 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:59:53,395 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-26 11:59:53,395 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-26 11:59:53,395 INFO L513 LassoAnalysis]: Proved termination. [2023-11-26 11:59:53,395 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(rec2_#t~ret3) = 1*rec2_#t~ret3 Supporting invariants [] [2023-11-26 11:59:53,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2023-11-26 11:59:53,406 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2023-11-26 11:59:53,407 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-26 11:59:53,408 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret3 could not be translated [2023-11-26 11:59:53,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:59:53,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:53,458 INFO L262 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-26 11:59:53,466 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:59:53,599 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2023-11-26 11:59:53,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:53,796 INFO L262 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-26 11:59:53,800 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:59:53,997 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-26 11:59:53,998 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 9 loop predicates [2023-11-26 11:59:53,998 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 114 states and 158 transitions. cyclomatic complexity: 51 Second operand has 11 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 states have internal predecessors, (20), 5 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-26 11:59:54,444 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 114 states and 158 transitions. cyclomatic complexity: 51. Second operand has 11 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 states have internal predecessors, (20), 5 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Result 585 states and 904 transitions. Complement of second has 45 states. [2023-11-26 11:59:54,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 11 states 2 stem states 8 non-accepting loop states 1 accepting loop states [2023-11-26 11:59:54,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 states have internal predecessors, (20), 5 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-26 11:59:54,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 53 transitions. [2023-11-26 11:59:54,446 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states and 53 transitions. Stem has 26 letters. Loop has 24 letters. [2023-11-26 11:59:54,447 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 11:59:54,447 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states and 53 transitions. Stem has 50 letters. Loop has 24 letters. [2023-11-26 11:59:54,448 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 11:59:54,448 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states and 53 transitions. Stem has 26 letters. Loop has 48 letters. [2023-11-26 11:59:54,449 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 11:59:54,450 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 585 states and 904 transitions. [2023-11-26 11:59:54,462 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 14 [2023-11-26 11:59:54,474 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 585 states to 433 states and 650 transitions. [2023-11-26 11:59:54,474 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 141 [2023-11-26 11:59:54,475 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 142 [2023-11-26 11:59:54,475 INFO L73 IsDeterministic]: Start isDeterministic. Operand 433 states and 650 transitions. [2023-11-26 11:59:54,475 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-26 11:59:54,475 INFO L218 hiAutomatonCegarLoop]: Abstraction has 433 states and 650 transitions. [2023-11-26 11:59:54,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states and 650 transitions. [2023-11-26 11:59:54,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 384. [2023-11-26 11:59:54,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 203 states have (on average 1.1428571428571428) internal successors, (232), 226 states have internal predecessors, (232), 125 states have call successors, (129), 57 states have call predecessors, (129), 56 states have return successors, (174), 100 states have call predecessors, (174), 116 states have call successors, (174) [2023-11-26 11:59:54,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 535 transitions. [2023-11-26 11:59:54,512 INFO L240 hiAutomatonCegarLoop]: Abstraction has 384 states and 535 transitions. [2023-11-26 11:59:54,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:59:54,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-26 11:59:54,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-26 11:59:54,513 INFO L87 Difference]: Start difference. First operand 384 states and 535 transitions. Second operand has 13 states, 10 states have (on average 2.2) internal successors, (22), 9 states have internal predecessors, (22), 5 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2023-11-26 11:59:54,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:59:54,711 INFO L93 Difference]: Finished difference Result 443 states and 646 transitions. [2023-11-26 11:59:54,711 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 443 states and 646 transitions. [2023-11-26 11:59:54,720 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 14 [2023-11-26 11:59:54,727 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 443 states to 350 states and 496 transitions. [2023-11-26 11:59:54,728 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 132 [2023-11-26 11:59:54,728 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 136 [2023-11-26 11:59:54,729 INFO L73 IsDeterministic]: Start isDeterministic. Operand 350 states and 496 transitions. [2023-11-26 11:59:54,729 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-26 11:59:54,729 INFO L218 hiAutomatonCegarLoop]: Abstraction has 350 states and 496 transitions. [2023-11-26 11:59:54,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states and 496 transitions. [2023-11-26 11:59:54,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 315. [2023-11-26 11:59:54,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 169 states have (on average 1.1005917159763314) internal successors, (186), 183 states have internal predecessors, (186), 100 states have call successors, (102), 49 states have call predecessors, (102), 46 states have return successors, (128), 82 states have call predecessors, (128), 84 states have call successors, (128) [2023-11-26 11:59:54,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 416 transitions. [2023-11-26 11:59:54,761 INFO L240 hiAutomatonCegarLoop]: Abstraction has 315 states and 416 transitions. [2023-11-26 11:59:54,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-26 11:59:54,764 INFO L428 stractBuchiCegarLoop]: Abstraction has 315 states and 416 transitions. [2023-11-26 11:59:54,764 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2023-11-26 11:59:54,764 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 315 states and 416 transitions. [2023-11-26 11:59:54,767 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 14 [2023-11-26 11:59:54,767 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-26 11:59:54,768 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-26 11:59:54,769 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [5, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:59:54,770 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-11-26 11:59:54,770 INFO L748 eck$LassoCheckResult]: Stem: 3626#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 3602#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet5#1, main_#t~ret6#1, main_~x~0#1;havoc main_#t~nondet5#1;main_~x~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1; 3561#L25 call main_#t~ret6#1 := rec2(main_~x~0#1);< 3590#$Ultimate##0 ~j := #in~j; 3646#L18 assume !(~j <= 0); 3577#L20 call #t~ret3 := rec1(~j - 1);< 3644#$Ultimate##0 ~i := #in~i; 3653#L12 assume !(~i <= 0); 3596#L14 call #t~ret0 := rec1(~i - 2);< 3652#$Ultimate##0 ~i := #in~i; 3657#L12 assume ~i <= 0;#res := 0; 3764#rec1FINAL assume true; 3762#rec1EXIT >#28#return; 3749#L14-1 call #t~ret1 := rec1(#t~ret0 - 1);< 3599#$Ultimate##0 ~i := #in~i; 3753#L12 assume ~i <= 0;#res := 0; 3752#rec1FINAL assume true; 3748#rec1EXIT >#30#return; 3566#L14-2 call #t~ret2 := rec1(#t~ret1);< 3565#$Ultimate##0 ~i := #in~i; 3568#L12 assume ~i <= 0;#res := 0; 3763#rec1FINAL assume true; 3761#rec1EXIT >#32#return; 3576#L14-3 #res := 1 + #t~ret2;havoc #t~ret0;havoc #t~ret1;havoc #t~ret2; 3578#rec1FINAL assume true; 3627#rec1EXIT >#34#return; 3558#L20-1 call #t~ret4 := rec2(#t~ret3);< 3560#$Ultimate##0 ~j := #in~j; 3573#L18 assume !(~j <= 0); 3618#L20 call #t~ret3 := rec1(~j - 1);< 3630#$Ultimate##0 ~i := #in~i; 3740#L12 assume !(~i <= 0); 3617#L14 call #t~ret0 := rec1(~i - 2);< 3620#$Ultimate##0 [2023-11-26 11:59:54,770 INFO L750 eck$LassoCheckResult]: Loop: 3620#$Ultimate##0 ~i := #in~i; 3713#L12 assume !(~i <= 0); 3700#L14 call #t~ret0 := rec1(~i - 2);< 3620#$Ultimate##0 [2023-11-26 11:59:54,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:59:54,771 INFO L85 PathProgramCache]: Analyzing trace with hash 1565705522, now seen corresponding path program 2 times [2023-11-26 11:59:54,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:59:54,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737837178] [2023-11-26 11:59:54,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:59:54,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:59:54,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:54,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:59:54,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:54,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 11:59:54,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:54,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-26 11:59:54,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:54,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-26 11:59:54,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:54,942 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-26 11:59:54,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:59:54,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737837178] [2023-11-26 11:59:54,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737837178] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:59:54,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [787428086] [2023-11-26 11:59:54,945 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 11:59:54,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:59:54,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:59:54,946 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:59:54,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-11-26 11:59:55,028 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-26 11:59:55,028 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:59:55,029 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-26 11:59:55,031 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:59:55,061 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-26 11:59:55,062 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:59:55,192 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-26 11:59:55,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [787428086] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:59:55,192 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:59:55,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 10 [2023-11-26 11:59:55,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101450776] [2023-11-26 11:59:55,195 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:59:55,197 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-26 11:59:55,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:59:55,198 INFO L85 PathProgramCache]: Analyzing trace with hash 29942, now seen corresponding path program 3 times [2023-11-26 11:59:55,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:59:55,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410558622] [2023-11-26 11:59:55,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:59:55,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:59:55,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:59:55,203 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 11:59:55,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:59:55,206 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 11:59:55,234 INFO L210 LassoAnalysis]: Preferences: [2023-11-26 11:59:55,234 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-26 11:59:55,234 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-26 11:59:55,234 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-26 11:59:55,235 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-26 11:59:55,235 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:59:55,235 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-26 11:59:55,235 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-26 11:59:55,235 INFO L133 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_1b.c_Iteration6_Loop [2023-11-26 11:59:55,235 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-26 11:59:55,235 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-26 11:59:55,236 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 11:59:55,238 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 11:59:55,240 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 11:59:55,246 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 11:59:55,248 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 11:59:55,250 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 11:59:55,278 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-26 11:59:55,278 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-26 11:59:55,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:59:55,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:59:55,280 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:59:55,283 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 11:59:55,284 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 11:59:55,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2023-11-26 11:59:55,305 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-26 11:59:55,306 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec1_#t~ret0=0} Honda state: {rec1_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-26 11:59:55,314 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Forceful destruction successful, exit code 0 [2023-11-26 11:59:55,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:59:55,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:59:55,315 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:59:55,319 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 11:59:55,319 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 11:59:55,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2023-11-26 11:59:55,346 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-26 11:59:55,346 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec1_#t~ret2=0} Honda state: {rec1_#t~ret2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-26 11:59:55,354 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2023-11-26 11:59:55,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:59:55,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:59:55,356 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:59:55,359 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 11:59:55,359 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 11:59:55,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2023-11-26 11:59:55,394 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Forceful destruction successful, exit code 0 [2023-11-26 11:59:55,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:59:55,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:59:55,395 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:59:55,404 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-26 11:59:55,405 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 11:59:55,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2023-11-26 11:59:55,446 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-26 11:59:55,451 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Forceful destruction successful, exit code 0 [2023-11-26 11:59:55,451 INFO L210 LassoAnalysis]: Preferences: [2023-11-26 11:59:55,452 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-26 11:59:55,452 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-26 11:59:55,452 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-26 11:59:55,452 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-26 11:59:55,452 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:59:55,452 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-26 11:59:55,452 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-26 11:59:55,452 INFO L133 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_1b.c_Iteration6_Loop [2023-11-26 11:59:55,452 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-26 11:59:55,452 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-26 11:59:55,453 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 11:59:55,456 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 11:59:55,458 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 11:59:55,465 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 11:59:55,467 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 11:59:55,469 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 11:59:55,499 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-26 11:59:55,499 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-26 11:59:55,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:59:55,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:59:55,501 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:59:55,506 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 11:59:55,519 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-26 11:59:55,519 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-26 11:59:55,519 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-26 11:59:55,519 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-26 11:59:55,519 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-26 11:59:55,520 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-26 11:59:55,520 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-26 11:59:55,520 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2023-11-26 11:59:55,537 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-26 11:59:55,546 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Forceful destruction successful, exit code 0 [2023-11-26 11:59:55,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:59:55,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:59:55,548 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:59:55,554 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 11:59:55,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2023-11-26 11:59:55,567 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-26 11:59:55,567 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-26 11:59:55,567 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-26 11:59:55,567 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-26 11:59:55,568 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-26 11:59:55,568 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-26 11:59:55,568 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-26 11:59:55,581 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-26 11:59:55,590 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Forceful destruction successful, exit code 0 [2023-11-26 11:59:55,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:59:55,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:59:55,592 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:59:55,596 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 11:59:55,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2023-11-26 11:59:55,609 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-26 11:59:55,609 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-26 11:59:55,609 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-26 11:59:55,609 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-26 11:59:55,609 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-26 11:59:55,610 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-26 11:59:55,610 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-26 11:59:55,625 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-26 11:59:55,638 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2023-11-26 11:59:55,638 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-26 11:59:55,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:59:55,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:59:55,642 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:59:55,643 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-26 11:59:55,644 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-26 11:59:55,644 INFO L513 LassoAnalysis]: Proved termination. [2023-11-26 11:59:55,644 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(rec1_#in~i) = 1*rec1_#in~i Supporting invariants [] [2023-11-26 11:59:55,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2023-11-26 11:59:55,655 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Forceful destruction successful, exit code 0 [2023-11-26 11:59:55,655 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-26 11:59:55,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:59:55,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:55,722 INFO L262 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-26 11:59:55,724 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:59:55,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:55,985 INFO L262 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-26 11:59:55,985 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:59:56,008 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 11:59:56,008 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 11:59:56,009 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 315 states and 416 transitions. cyclomatic complexity: 114 Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 3 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-26 11:59:56,090 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 315 states and 416 transitions. cyclomatic complexity: 114. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 3 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Result 349 states and 456 transitions. Complement of second has 14 states. [2023-11-26 11:59:56,091 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 11:59:56,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 3 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-26 11:59:56,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 18 transitions. [2023-11-26 11:59:56,092 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 33 letters. Loop has 3 letters. [2023-11-26 11:59:56,093 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 11:59:56,093 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-26 11:59:56,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:59:56,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:56,152 INFO L262 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-26 11:59:56,154 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:59:56,359 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Forceful destruction successful, exit code 0 [2023-11-26 11:59:56,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:56,409 INFO L262 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-26 11:59:56,410 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:59:56,441 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 11:59:56,442 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 3 loop predicates [2023-11-26 11:59:56,442 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 315 states and 416 transitions. cyclomatic complexity: 114 Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 3 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-26 11:59:56,520 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 315 states and 416 transitions. cyclomatic complexity: 114. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 3 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Result 349 states and 456 transitions. Complement of second has 14 states. [2023-11-26 11:59:56,520 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 11:59:56,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 3 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-26 11:59:56,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 18 transitions. [2023-11-26 11:59:56,521 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 33 letters. Loop has 3 letters. [2023-11-26 11:59:56,522 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 11:59:56,522 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-26 11:59:56,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:59:56,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:56,586 INFO L262 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-26 11:59:56,588 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:59:56,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:56,818 INFO L262 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-26 11:59:56,818 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:59:56,841 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 11:59:56,842 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2023-11-26 11:59:56,842 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 315 states and 416 transitions. cyclomatic complexity: 114 Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 3 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-26 11:59:56,946 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 315 states and 416 transitions. cyclomatic complexity: 114. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 3 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Result 486 states and 617 transitions. Complement of second has 16 states. [2023-11-26 11:59:56,946 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 11:59:56,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 3 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-26 11:59:56,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 25 transitions. [2023-11-26 11:59:56,948 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 33 letters. Loop has 3 letters. [2023-11-26 11:59:56,948 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 11:59:56,948 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 36 letters. Loop has 3 letters. [2023-11-26 11:59:56,948 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 11:59:56,949 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 33 letters. Loop has 6 letters. [2023-11-26 11:59:56,949 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 11:59:56,949 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 486 states and 617 transitions. [2023-11-26 11:59:56,957 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 26 [2023-11-26 11:59:56,964 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 486 states to 396 states and 527 transitions. [2023-11-26 11:59:56,965 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 130 [2023-11-26 11:59:56,965 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 137 [2023-11-26 11:59:56,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 396 states and 527 transitions. [2023-11-26 11:59:56,965 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-26 11:59:56,965 INFO L218 hiAutomatonCegarLoop]: Abstraction has 396 states and 527 transitions. [2023-11-26 11:59:56,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states and 527 transitions. [2023-11-26 11:59:56,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 352. [2023-11-26 11:59:56,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 196 states have (on average 1.1275510204081634) internal successors, (221), 212 states have internal predecessors, (221), 102 states have call successors, (104), 57 states have call predecessors, (104), 54 states have return successors, (132), 82 states have call predecessors, (132), 86 states have call successors, (132) [2023-11-26 11:59:56,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 457 transitions. [2023-11-26 11:59:56,981 INFO L240 hiAutomatonCegarLoop]: Abstraction has 352 states and 457 transitions. [2023-11-26 11:59:56,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:59:56,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-26 11:59:56,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-11-26 11:59:56,982 INFO L87 Difference]: Start difference. First operand 352 states and 457 transitions. Second operand has 10 states, 8 states have (on average 2.0) internal successors, (16), 6 states have internal predecessors, (16), 4 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-26 11:59:57,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:59:57,082 INFO L93 Difference]: Finished difference Result 379 states and 514 transitions. [2023-11-26 11:59:57,082 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 379 states and 514 transitions. [2023-11-26 11:59:57,088 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 22 [2023-11-26 11:59:57,090 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 379 states to 105 states and 143 transitions. [2023-11-26 11:59:57,090 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 99 [2023-11-26 11:59:57,091 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 99 [2023-11-26 11:59:57,091 INFO L73 IsDeterministic]: Start isDeterministic. Operand 105 states and 143 transitions. [2023-11-26 11:59:57,091 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-26 11:59:57,091 INFO L218 hiAutomatonCegarLoop]: Abstraction has 105 states and 143 transitions. [2023-11-26 11:59:57,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states and 143 transitions. [2023-11-26 11:59:57,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 87. [2023-11-26 11:59:57,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 51 states have (on average 1.1176470588235294) internal successors, (57), 54 states have internal predecessors, (57), 22 states have call successors, (22), 15 states have call predecessors, (22), 14 states have return successors, (28), 17 states have call predecessors, (28), 20 states have call successors, (28) [2023-11-26 11:59:57,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 107 transitions. [2023-11-26 11:59:57,096 INFO L240 hiAutomatonCegarLoop]: Abstraction has 87 states and 107 transitions. [2023-11-26 11:59:57,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-26 11:59:57,097 INFO L428 stractBuchiCegarLoop]: Abstraction has 87 states and 107 transitions. [2023-11-26 11:59:57,097 INFO L335 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2023-11-26 11:59:57,098 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 87 states and 107 transitions. [2023-11-26 11:59:57,099 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 22 [2023-11-26 11:59:57,099 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-26 11:59:57,099 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-26 11:59:57,099 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:59:57,099 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-11-26 11:59:57,100 INFO L748 eck$LassoCheckResult]: Stem: 6465#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 6454#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet5#1, main_#t~ret6#1, main_~x~0#1;havoc main_#t~nondet5#1;main_~x~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1; 6434#L25 call main_#t~ret6#1 := rec2(main_~x~0#1);< 6451#$Ultimate##0 ~j := #in~j; 6493#L18 assume !(~j <= 0); 6467#L20 call #t~ret3 := rec1(~j - 1);< 6492#$Ultimate##0 ~i := #in~i; 6491#L12 assume !(~i <= 0); 6462#L14 call #t~ret0 := rec1(~i - 2);< 6468#$Ultimate##0 ~i := #in~i; 6459#L12 assume !(~i <= 0); 6460#L14 [2023-11-26 11:59:57,100 INFO L750 eck$LassoCheckResult]: Loop: 6460#L14 call #t~ret0 := rec1(~i - 2);< 6499#$Ultimate##0 ~i := #in~i; 6459#L12 assume !(~i <= 0); 6460#L14 [2023-11-26 11:59:57,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:59:57,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1203085824, now seen corresponding path program 3 times [2023-11-26 11:59:57,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:59:57,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418506471] [2023-11-26 11:59:57,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:59:57,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:59:57,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:59:57,104 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 11:59:57,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:59:57,107 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 11:59:57,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:59:57,108 INFO L85 PathProgramCache]: Analyzing trace with hash 55742, now seen corresponding path program 4 times [2023-11-26 11:59:57,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:59:57,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399026962] [2023-11-26 11:59:57,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:59:57,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:59:57,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:59:57,111 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 11:59:57,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:59:57,113 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 11:59:57,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:59:57,113 INFO L85 PathProgramCache]: Analyzing trace with hash 372328287, now seen corresponding path program 4 times [2023-11-26 11:59:57,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:59:57,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323599899] [2023-11-26 11:59:57,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:59:57,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:59:57,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:59:57,118 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 11:59:57,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:59:57,121 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 11:59:57,172 INFO L210 LassoAnalysis]: Preferences: [2023-11-26 11:59:57,172 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-26 11:59:57,172 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-26 11:59:57,172 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-26 11:59:57,173 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-26 11:59:57,173 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:59:57,173 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-26 11:59:57,173 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-26 11:59:57,173 INFO L133 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_1b.c_Iteration7_Loop [2023-11-26 11:59:57,173 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-26 11:59:57,173 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-26 11:59:57,174 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 11:59:57,177 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 11:59:57,179 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 11:59:57,188 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 11:59:57,191 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 11:59:57,228 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-26 11:59:57,228 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-26 11:59:57,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:59:57,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:59:57,229 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:59:57,233 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 11:59:57,233 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 11:59:57,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2023-11-26 11:59:57,262 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-26 11:59:57,262 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec1_#t~ret0=0} Honda state: {rec1_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-26 11:59:57,266 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Forceful destruction successful, exit code 0 [2023-11-26 11:59:57,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:59:57,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:59:57,267 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:59:57,278 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 11:59:57,278 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 11:59:57,293 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2023-11-26 11:59:57,308 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-26 11:59:57,308 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec1_#t~ret1=0} Honda state: {rec1_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-26 11:59:57,311 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Forceful destruction successful, exit code 0 [2023-11-26 11:59:57,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:59:57,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:59:57,313 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:59:57,316 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 11:59:57,317 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 11:59:57,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2023-11-26 11:59:57,352 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Forceful destruction successful, exit code 0 [2023-11-26 11:59:57,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:59:57,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:59:57,354 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:59:57,358 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-26 11:59:57,358 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 11:59:57,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Waiting until timeout for monitored process [2023-11-26 11:59:59,510 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-26 11:59:59,515 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Forceful destruction successful, exit code 0 [2023-11-26 11:59:59,515 INFO L210 LassoAnalysis]: Preferences: [2023-11-26 11:59:59,515 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-26 11:59:59,515 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-26 11:59:59,515 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-26 11:59:59,515 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-26 11:59:59,515 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:59:59,515 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-26 11:59:59,515 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-26 11:59:59,516 INFO L133 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_1b.c_Iteration7_Loop [2023-11-26 11:59:59,516 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-26 11:59:59,516 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-26 11:59:59,516 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 11:59:59,541 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 11:59:59,543 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 11:59:59,545 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 11:59:59,548 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 11:59:59,581 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-26 11:59:59,581 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-26 11:59:59,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:59:59,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:59:59,586 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:59:59,590 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 11:59:59,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Waiting until timeout for monitored process [2023-11-26 11:59:59,603 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-26 11:59:59,603 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-26 11:59:59,603 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-26 11:59:59,603 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-26 11:59:59,603 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-26 11:59:59,605 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-26 11:59:59,605 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-26 11:59:59,625 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-26 11:59:59,628 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2023-11-26 11:59:59,628 INFO L444 ModelExtractionUtils]: 2 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-26 11:59:59,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:59:59,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:59:59,630 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:59:59,633 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-26 11:59:59,633 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-26 11:59:59,633 INFO L513 LassoAnalysis]: Proved termination. [2023-11-26 11:59:59,633 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(rec1_~i) = 1*rec1_~i Supporting invariants [] [2023-11-26 11:59:59,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Waiting until timeout for monitored process [2023-11-26 11:59:59,638 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Forceful destruction successful, exit code 0 [2023-11-26 11:59:59,638 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-26 11:59:59,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:59:59,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:59,671 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 11:59:59,672 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:59:59,691 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Forceful destruction successful, exit code 0 [2023-11-26 11:59:59,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:59,714 INFO L262 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-26 11:59:59,715 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:59:59,735 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 11:59:59,736 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2023-11-26 11:59:59,736 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 87 states and 107 transitions. cyclomatic complexity: 23 Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (4), 2 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:59:59,773 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 87 states and 107 transitions. cyclomatic complexity: 23. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (4), 2 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 101 states and 125 transitions. Complement of second has 11 states. [2023-11-26 11:59:59,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2023-11-26 11:59:59,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (4), 2 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:59:59,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 14 transitions. [2023-11-26 11:59:59,775 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 11 letters. Loop has 3 letters. [2023-11-26 11:59:59,776 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 11:59:59,776 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 14 letters. Loop has 3 letters. [2023-11-26 11:59:59,776 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 11:59:59,776 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 11 letters. Loop has 6 letters. [2023-11-26 11:59:59,776 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 11:59:59,776 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 101 states and 125 transitions. [2023-11-26 11:59:59,778 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 22 [2023-11-26 11:59:59,780 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 101 states to 95 states and 118 transitions. [2023-11-26 11:59:59,780 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 84 [2023-11-26 11:59:59,780 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 85 [2023-11-26 11:59:59,781 INFO L73 IsDeterministic]: Start isDeterministic. Operand 95 states and 118 transitions. [2023-11-26 11:59:59,781 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-26 11:59:59,781 INFO L218 hiAutomatonCegarLoop]: Abstraction has 95 states and 118 transitions. [2023-11-26 11:59:59,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states and 118 transitions. [2023-11-26 11:59:59,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 93. [2023-11-26 11:59:59,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 55 states have (on average 1.1090909090909091) internal successors, (61), 59 states have internal predecessors, (61), 23 states have call successors, (24), 16 states have call predecessors, (24), 15 states have return successors, (30), 17 states have call predecessors, (30), 21 states have call successors, (30) [2023-11-26 11:59:59,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 115 transitions. [2023-11-26 11:59:59,785 INFO L240 hiAutomatonCegarLoop]: Abstraction has 93 states and 115 transitions. [2023-11-26 11:59:59,786 INFO L428 stractBuchiCegarLoop]: Abstraction has 93 states and 115 transitions. [2023-11-26 11:59:59,786 INFO L335 stractBuchiCegarLoop]: ======== Iteration 8 ============ [2023-11-26 11:59:59,786 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 93 states and 115 transitions. [2023-11-26 11:59:59,787 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 22 [2023-11-26 11:59:59,787 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-26 11:59:59,787 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-26 11:59:59,789 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [5, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:59:59,789 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [5, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2023-11-26 11:59:59,789 INFO L748 eck$LassoCheckResult]: Stem: 6732#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 6717#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet5#1, main_#t~ret6#1, main_~x~0#1;havoc main_#t~nondet5#1;main_~x~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1; 6693#L25 call main_#t~ret6#1 := rec2(main_~x~0#1);< 6702#$Ultimate##0 ~j := #in~j; 6703#L18 assume !(~j <= 0); 6730#L20 call #t~ret3 := rec1(~j - 1);< 6731#$Ultimate##0 ~i := #in~i; 6754#L12 assume !(~i <= 0); 6710#L14 call #t~ret0 := rec1(~i - 2);< 6751#$Ultimate##0 ~i := #in~i; 6756#L12 assume !(~i <= 0); 6696#L14 call #t~ret0 := rec1(~i - 2);< 6695#$Ultimate##0 ~i := #in~i; 6697#L12 assume ~i <= 0;#res := 0; 6784#rec1FINAL assume true; 6782#rec1EXIT >#28#return; 6715#L14-1 call #t~ret1 := rec1(#t~ret0 - 1);< 6716#$Ultimate##0 ~i := #in~i; 6752#L12 assume ~i <= 0;#res := 0; 6749#rec1FINAL assume true; 6746#rec1EXIT >#30#return; 6713#L14-2 call #t~ret2 := rec1(#t~ret1);< 6714#$Ultimate##0 ~i := #in~i; 6755#L12 assume ~i <= 0;#res := 0; 6747#rec1FINAL assume true; 6744#rec1EXIT >#32#return; 6704#L14-3 #res := 1 + #t~ret2;havoc #t~ret0;havoc #t~ret1;havoc #t~ret2; 6712#rec1FINAL assume true; 6738#rec1EXIT >#28#return; 6705#L14-1 call #t~ret1 := rec1(#t~ret0 - 1);< 6740#$Ultimate##0 [2023-11-26 11:59:59,790 INFO L750 eck$LassoCheckResult]: Loop: 6740#$Ultimate##0 ~i := #in~i; 6750#L12 assume !(~i <= 0); 6709#L14 call #t~ret0 := rec1(~i - 2);< 6759#$Ultimate##0 ~i := #in~i; 6761#L12 assume !(~i <= 0); 6711#L14 call #t~ret0 := rec1(~i - 2);< 6760#$Ultimate##0 ~i := #in~i; 6722#L12 assume ~i <= 0;#res := 0; 6718#rec1FINAL assume true; 6719#rec1EXIT >#28#return; 6715#L14-1 call #t~ret1 := rec1(#t~ret0 - 1);< 6716#$Ultimate##0 ~i := #in~i; 6752#L12 assume ~i <= 0;#res := 0; 6749#rec1FINAL assume true; 6746#rec1EXIT >#30#return; 6713#L14-2 call #t~ret2 := rec1(#t~ret1);< 6714#$Ultimate##0 ~i := #in~i; 6755#L12 assume ~i <= 0;#res := 0; 6747#rec1FINAL assume true; 6744#rec1EXIT >#32#return; 6704#L14-3 #res := 1 + #t~ret2;havoc #t~ret0;havoc #t~ret1;havoc #t~ret2; 6712#rec1FINAL assume true; 6738#rec1EXIT >#28#return; 6706#L14-1 call #t~ret1 := rec1(#t~ret0 - 1);< 6740#$Ultimate##0 [2023-11-26 11:59:59,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:59:59,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1060897207, now seen corresponding path program 1 times [2023-11-26 11:59:59,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:59:59,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655459086] [2023-11-26 11:59:59,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:59:59,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:59:59,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:59:59,798 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 11:59:59,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:59:59,811 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 11:59:59,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:59:59,812 INFO L85 PathProgramCache]: Analyzing trace with hash 245881341, now seen corresponding path program 1 times [2023-11-26 11:59:59,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:59:59,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090604044] [2023-11-26 11:59:59,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:59:59,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:59:59,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:59:59,827 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 11:59:59,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:59:59,839 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 11:59:59,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:59:59,840 INFO L85 PathProgramCache]: Analyzing trace with hash -2071488077, now seen corresponding path program 2 times [2023-11-26 11:59:59,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:59:59,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083965019] [2023-11-26 11:59:59,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:59:59,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:59:59,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:59,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 11:59:59,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:59,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 11:59:59,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:59,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-26 11:59:59,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:59,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-26 11:59:59,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:59,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-26 11:59:59,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:59,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 11:59:59,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:59:59,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-26 11:59:59,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:00,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-26 12:00:00,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:00,022 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 24 proven. 29 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2023-11-26 12:00:00,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:00,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083965019] [2023-11-26 12:00:00,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083965019] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:00:00,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1184012904] [2023-11-26 12:00:00,023 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 12:00:00,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:00:00,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:00:00,026 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:00:00,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2023-11-26 12:00:00,089 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-26 12:00:00,089 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 12:00:00,090 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-26 12:00:00,092 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:00:00,113 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 109 proven. 2 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-11-26 12:00:00,114 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:00:00,242 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 24 proven. 29 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2023-11-26 12:00:00,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1184012904] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 12:00:00,242 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 12:00:00,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 8 [2023-11-26 12:00:00,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497321393] [2023-11-26 12:00:00,243 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 12:00:00,517 INFO L210 LassoAnalysis]: Preferences: [2023-11-26 12:00:00,517 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-26 12:00:00,518 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-26 12:00:00,518 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-26 12:00:00,518 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-26 12:00:00,518 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 12:00:00,518 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-26 12:00:00,518 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-26 12:00:00,518 INFO L133 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_1b.c_Iteration8_Loop [2023-11-26 12:00:00,518 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-26 12:00:00,519 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-26 12:00:00,519 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 12:00:00,522 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 12:00:00,529 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 12:00:00,531 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 12:00:00,534 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 12:00:00,536 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 12:00:00,574 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-26 12:00:00,575 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-26 12:00:00,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 12:00:00,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:00:00,576 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 12:00:00,586 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 12:00:00,586 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 12:00:00,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Waiting until timeout for monitored process [2023-11-26 12:00:00,614 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-26 12:00:00,614 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec1_#t~ret2=0} Honda state: {rec1_#t~ret2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-26 12:00:00,617 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Forceful destruction successful, exit code 0 [2023-11-26 12:00:00,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 12:00:00,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:00:00,619 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 12:00:00,623 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 12:00:00,623 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 12:00:00,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Waiting until timeout for monitored process [2023-11-26 12:00:00,639 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-26 12:00:00,639 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec1_#res=0} Honda state: {rec1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-26 12:00:00,643 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Forceful destruction successful, exit code 0 [2023-11-26 12:00:00,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 12:00:00,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:00:00,644 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 12:00:00,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Waiting until timeout for monitored process [2023-11-26 12:00:00,647 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 12:00:00,647 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 12:00:00,659 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-26 12:00:00,659 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec1_~i=0} Honda state: {rec1_~i=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-26 12:00:00,662 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Ended with exit code 0 [2023-11-26 12:00:00,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 12:00:00,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:00:00,663 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 12:00:00,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Waiting until timeout for monitored process [2023-11-26 12:00:00,666 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 12:00:00,666 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 12:00:00,678 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-26 12:00:00,678 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec1_#t~ret1=0} Honda state: {rec1_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-26 12:00:00,681 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Forceful destruction successful, exit code 0 [2023-11-26 12:00:00,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 12:00:00,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:00:00,688 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 12:00:00,692 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 12:00:00,692 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 12:00:00,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Waiting until timeout for monitored process [2023-11-26 12:00:00,730 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-26 12:00:00,730 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec1_#t~ret0=0} Honda state: {rec1_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-26 12:00:00,733 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Forceful destruction successful, exit code 0 [2023-11-26 12:00:00,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 12:00:00,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:00:00,735 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 12:00:00,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Waiting until timeout for monitored process [2023-11-26 12:00:00,738 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 12:00:00,739 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 12:00:00,761 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Ended with exit code 0 [2023-11-26 12:00:00,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 12:00:00,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:00:00,763 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 12:00:00,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Waiting until timeout for monitored process [2023-11-26 12:00:00,766 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-26 12:00:00,767 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 12:00:00,780 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-26 12:00:00,782 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Ended with exit code 0 [2023-11-26 12:00:00,783 INFO L210 LassoAnalysis]: Preferences: [2023-11-26 12:00:00,783 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-26 12:00:00,783 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-26 12:00:00,783 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-26 12:00:00,783 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-26 12:00:00,783 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 12:00:00,783 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-26 12:00:00,783 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-26 12:00:00,784 INFO L133 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_1b.c_Iteration8_Loop [2023-11-26 12:00:00,784 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-26 12:00:00,784 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-26 12:00:00,784 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 12:00:00,795 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 12:00:00,797 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 12:00:00,799 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 12:00:00,802 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 12:00:00,804 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 12:00:00,844 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-26 12:00:00,844 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-26 12:00:00,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 12:00:00,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:00:00,846 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 12:00:00,855 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 12:00:00,868 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-26 12:00:00,868 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-26 12:00:00,868 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-26 12:00:00,868 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-26 12:00:00,868 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-26 12:00:00,868 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-26 12:00:00,869 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-26 12:00:00,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Waiting until timeout for monitored process [2023-11-26 12:00:00,881 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-26 12:00:00,884 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Forceful destruction successful, exit code 0 [2023-11-26 12:00:00,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 12:00:00,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:00:00,885 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 12:00:00,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Waiting until timeout for monitored process [2023-11-26 12:00:00,895 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 12:00:00,907 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-26 12:00:00,908 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-26 12:00:00,908 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-26 12:00:00,908 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-26 12:00:00,908 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-26 12:00:00,909 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-26 12:00:00,909 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-26 12:00:00,921 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-26 12:00:00,925 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Forceful destruction successful, exit code 0 [2023-11-26 12:00:00,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 12:00:00,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:00:00,926 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 12:00:00,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Waiting until timeout for monitored process [2023-11-26 12:00:00,942 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 12:00:00,954 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-26 12:00:00,954 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-26 12:00:00,954 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-26 12:00:00,955 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-26 12:00:00,955 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-26 12:00:00,955 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-26 12:00:00,955 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-26 12:00:00,964 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-26 12:00:00,967 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Forceful destruction successful, exit code 0 [2023-11-26 12:00:00,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 12:00:00,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:00:00,969 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 12:00:00,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Waiting until timeout for monitored process [2023-11-26 12:00:00,972 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 12:00:00,984 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-26 12:00:00,984 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-26 12:00:00,984 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-26 12:00:00,985 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-26 12:00:00,985 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-26 12:00:00,985 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-26 12:00:00,985 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-26 12:00:00,994 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-26 12:00:00,998 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Forceful destruction successful, exit code 0 [2023-11-26 12:00:00,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 12:00:00,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:00:00,999 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 12:00:01,003 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 12:00:01,016 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-26 12:00:01,016 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-26 12:00:01,016 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-26 12:00:01,016 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-26 12:00:01,016 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-26 12:00:01,017 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-26 12:00:01,017 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-26 12:00:01,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (63)] Waiting until timeout for monitored process [2023-11-26 12:00:01,033 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-26 12:00:01,037 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (63)] Forceful destruction successful, exit code 0 [2023-11-26 12:00:01,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 12:00:01,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:00:01,038 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 12:00:01,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (64)] Waiting until timeout for monitored process [2023-11-26 12:00:01,046 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 12:00:01,058 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-26 12:00:01,059 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-26 12:00:01,059 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-26 12:00:01,059 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-26 12:00:01,059 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-26 12:00:01,060 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-26 12:00:01,060 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-26 12:00:01,069 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-26 12:00:01,073 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-26 12:00:01,073 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-26 12:00:01,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 12:00:01,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:00:01,076 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 12:00:01,082 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-26 12:00:01,082 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-26 12:00:01,082 INFO L513 LassoAnalysis]: Proved termination. [2023-11-26 12:00:01,082 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(rec1_#in~i) = 1*rec1_#in~i Supporting invariants [] [2023-11-26 12:00:01,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (65)] Waiting until timeout for monitored process [2023-11-26 12:00:01,086 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (64)] Forceful destruction successful, exit code 0 [2023-11-26 12:00:01,087 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-26 12:00:01,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:01,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:01,151 INFO L262 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-26 12:00:01,153 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:00:01,243 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (65)] Forceful destruction successful, exit code 0 [2023-11-26 12:00:01,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:01,412 INFO L262 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-26 12:00:01,413 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:00:01,620 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 15 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-26 12:00:01,621 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 9 loop predicates [2023-11-26 12:00:01,621 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 93 states and 115 transitions. cyclomatic complexity: 26 Second operand has 11 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 5 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-26 12:00:01,691 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 93 states and 115 transitions. cyclomatic complexity: 26. Second operand has 11 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 5 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Result 101 states and 123 transitions. Complement of second has 7 states. [2023-11-26 12:00:01,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2023-11-26 12:00:01,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 5 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-26 12:00:01,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2023-11-26 12:00:01,693 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 30 letters. Loop has 24 letters. [2023-11-26 12:00:01,693 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 12:00:01,693 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-26 12:00:01,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:01,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:01,756 INFO L262 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-26 12:00:01,758 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:00:02,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:02,002 INFO L262 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-26 12:00:02,004 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:00:02,187 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 15 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-26 12:00:02,188 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 9 loop predicates [2023-11-26 12:00:02,189 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 93 states and 115 transitions. cyclomatic complexity: 26 Second operand has 11 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 5 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-26 12:00:02,257 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 93 states and 115 transitions. cyclomatic complexity: 26. Second operand has 11 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 5 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Result 101 states and 123 transitions. Complement of second has 7 states. [2023-11-26 12:00:02,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2023-11-26 12:00:02,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 5 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-26 12:00:02,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2023-11-26 12:00:02,259 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 30 letters. Loop has 24 letters. [2023-11-26 12:00:02,260 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 12:00:02,260 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-26 12:00:02,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:02,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:02,350 INFO L262 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-26 12:00:02,351 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:00:02,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:02,620 INFO L262 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-26 12:00:02,622 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:00:02,811 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 15 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-26 12:00:02,812 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 9 loop predicates [2023-11-26 12:00:02,812 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 93 states and 115 transitions. cyclomatic complexity: 26 Second operand has 11 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 5 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-26 12:00:03,132 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 93 states and 115 transitions. cyclomatic complexity: 26. Second operand has 11 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 5 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Result 258 states and 304 transitions. Complement of second has 31 states. [2023-11-26 12:00:03,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 11 states 2 stem states 8 non-accepting loop states 1 accepting loop states [2023-11-26 12:00:03,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 5 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-26 12:00:03,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 39 transitions. [2023-11-26 12:00:03,133 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states and 39 transitions. Stem has 30 letters. Loop has 24 letters. [2023-11-26 12:00:03,134 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 12:00:03,134 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-26 12:00:03,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:03,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:03,195 INFO L262 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-26 12:00:03,197 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:00:03,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:03,456 INFO L262 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-26 12:00:03,458 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:00:03,628 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 15 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-26 12:00:03,629 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and with honda bouncer for loop.2 stem predicates 9 loop predicates [2023-11-26 12:00:03,629 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 93 states and 115 transitions. cyclomatic complexity: 26 Second operand has 11 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 5 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-26 12:00:04,156 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 93 states and 115 transitions. cyclomatic complexity: 26. Second operand has 11 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 5 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Result 410 states and 516 transitions. Complement of second has 80 states. [2023-11-26 12:00:04,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 15 states 2 stem states 12 non-accepting loop states 1 accepting loop states [2023-11-26 12:00:04,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 5 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-26 12:00:04,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 50 transitions. [2023-11-26 12:00:04,159 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 15 states and 50 transitions. Stem has 30 letters. Loop has 24 letters. [2023-11-26 12:00:04,159 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 12:00:04,159 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 15 states and 50 transitions. Stem has 54 letters. Loop has 24 letters. [2023-11-26 12:00:04,160 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 12:00:04,160 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 15 states and 50 transitions. Stem has 30 letters. Loop has 48 letters. [2023-11-26 12:00:04,161 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 12:00:04,161 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 410 states and 516 transitions. [2023-11-26 12:00:04,167 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 62 [2023-11-26 12:00:04,172 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 410 states to 254 states and 346 transitions. [2023-11-26 12:00:04,172 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 155 [2023-11-26 12:00:04,172 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 165 [2023-11-26 12:00:04,173 INFO L73 IsDeterministic]: Start isDeterministic. Operand 254 states and 346 transitions. [2023-11-26 12:00:04,173 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-26 12:00:04,173 INFO L218 hiAutomatonCegarLoop]: Abstraction has 254 states and 346 transitions. [2023-11-26 12:00:04,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states and 346 transitions. [2023-11-26 12:00:04,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 217. [2023-11-26 12:00:04,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 127 states have (on average 1.125984251968504) internal successors, (143), 139 states have internal predecessors, (143), 51 states have call successors, (52), 34 states have call predecessors, (52), 39 states have return successors, (76), 43 states have call predecessors, (76), 49 states have call successors, (76) [2023-11-26 12:00:04,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 271 transitions. [2023-11-26 12:00:04,183 INFO L240 hiAutomatonCegarLoop]: Abstraction has 217 states and 271 transitions. [2023-11-26 12:00:04,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:04,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 12:00:04,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-26 12:00:04,184 INFO L87 Difference]: Start difference. First operand 217 states and 271 transitions. Second operand has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 5 states have internal predecessors, (20), 3 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-26 12:00:04,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:00:04,227 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2023-11-26 12:00:04,227 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 36 states and 38 transitions. [2023-11-26 12:00:04,228 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-11-26 12:00:04,228 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 36 states to 0 states and 0 transitions. [2023-11-26 12:00:04,228 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2023-11-26 12:00:04,228 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2023-11-26 12:00:04,228 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2023-11-26 12:00:04,228 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:00:04,229 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-26 12:00:04,229 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-26 12:00:04,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 12:00:04,229 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-26 12:00:04,230 INFO L335 stractBuchiCegarLoop]: ======== Iteration 9 ============ [2023-11-26 12:00:04,230 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2023-11-26 12:00:04,230 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-11-26 12:00:04,230 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2023-11-26 12:00:04,237 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 26.11 12:00:04 BoogieIcfgContainer [2023-11-26 12:00:04,237 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-11-26 12:00:04,238 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-26 12:00:04,238 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-26 12:00:04,238 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-26 12:00:04,238 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:59:45" (3/4) ... [2023-11-26 12:00:04,240 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-26 12:00:04,241 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-26 12:00:04,242 INFO L158 Benchmark]: Toolchain (without parser) took 19503.11ms. Allocated memory was 127.9MB in the beginning and 178.3MB in the end (delta: 50.3MB). Free memory was 83.5MB in the beginning and 87.0MB in the end (delta: -3.6MB). Peak memory consumption was 49.9MB. Max. memory is 16.1GB. [2023-11-26 12:00:04,242 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 127.9MB. Free memory is still 101.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 12:00:04,242 INFO L158 Benchmark]: CACSL2BoogieTranslator took 218.41ms. Allocated memory is still 127.9MB. Free memory was 83.5MB in the beginning and 73.9MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-26 12:00:04,243 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.54ms. Allocated memory is still 127.9MB. Free memory was 73.9MB in the beginning and 72.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 12:00:04,243 INFO L158 Benchmark]: Boogie Preprocessor took 24.76ms. Allocated memory is still 127.9MB. Free memory was 72.4MB in the beginning and 71.4MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 12:00:04,244 INFO L158 Benchmark]: RCFGBuilder took 338.15ms. Allocated memory is still 127.9MB. Free memory was 70.9MB in the beginning and 62.5MB in the end (delta: 8.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-26 12:00:04,244 INFO L158 Benchmark]: BuchiAutomizer took 18880.90ms. Allocated memory was 127.9MB in the beginning and 178.3MB in the end (delta: 50.3MB). Free memory was 62.0MB in the beginning and 88.1MB in the end (delta: -26.1MB). Peak memory consumption was 24.7MB. Max. memory is 16.1GB. [2023-11-26 12:00:04,244 INFO L158 Benchmark]: Witness Printer took 3.72ms. Allocated memory is still 178.3MB. Free memory was 88.1MB in the beginning and 87.0MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 12:00:04,246 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 127.9MB. Free memory is still 101.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 218.41ms. Allocated memory is still 127.9MB. Free memory was 83.5MB in the beginning and 73.9MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.54ms. Allocated memory is still 127.9MB. Free memory was 73.9MB in the beginning and 72.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 24.76ms. Allocated memory is still 127.9MB. Free memory was 72.4MB in the beginning and 71.4MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 338.15ms. Allocated memory is still 127.9MB. Free memory was 70.9MB in the beginning and 62.5MB in the end (delta: 8.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 18880.90ms. Allocated memory was 127.9MB in the beginning and 178.3MB in the end (delta: 50.3MB). Free memory was 62.0MB in the beginning and 88.1MB in the end (delta: -26.1MB). Peak memory consumption was 24.7MB. Max. memory is 16.1GB. * Witness Printer took 3.72ms. Allocated memory is still 178.3MB. Free memory was 88.1MB in the beginning and 87.0MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret3 could not be translated * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 12 terminating modules (5 trivial, 5 deterministic, 2 nondeterministic). One deterministic module has affine ranking function \old(j) and consists of 11 locations. One deterministic module has affine ranking function \old(i) and consists of 4 locations. One deterministic module has affine ranking function \old(i) and consists of 5 locations. One deterministic module has affine ranking function null and consists of 11 locations. One deterministic module has affine ranking function i and consists of 5 locations. One nondeterministic module has affine ranking function \old(i) and consists of 5 locations. One nondeterministic module has affine ranking function \old(i) and consists of 15 locations. 5 modules have a trivial ranking function, the largest among these consists of 13 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 18.8s and 9 iterations. TraceHistogramMax:5. Analysis of lassos took 10.9s. Construction of modules took 1.0s. Büchi inclusion checks took 6.4s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 11. Automata minimization 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 249 StatesRemovedByMinimization, 11 NontrivialMinimizations. Non-live state removal took 0.1s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [5, 0, 1, 1, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 38/58 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 381 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 354 mSDsluCounter, 851 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 549 mSDsCounter, 304 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 989 IncrementalHoareTripleChecker+Invalid, 1293 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 304 mSolverCounterUnsat, 302 mSDtfsCounter, 989 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT3 conc0 concLT3 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital11 mio100 ax100 hnf100 lsp100 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq163 hnf92 smp100 dnf100 smp100 tf111 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 49ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 18 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 7 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 5.4s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2023-11-26 12:00:04,265 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2023-11-26 12:00:04,466 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2023-11-26 12:00:04,666 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2023-11-26 12:00:04,867 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2023-11-26 12:00:05,068 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268a7103-0108-4c81-abaa-d881c94f6a51/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE