./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted/Ackermann-2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted/Ackermann-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU --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 24c3da6ed2fa1f6675634198ae6fe88b58d89aeeff26fce5568b93d74b6b0249 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 21:59:22,547 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 21:59:22,646 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Termination-64bit-Automizer_Default.epf [2024-10-31 21:59:22,650 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 21:59:22,651 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 21:59:22,684 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 21:59:22,685 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 21:59:22,685 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 21:59:22,686 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 21:59:22,686 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 21:59:22,687 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 21:59:22,687 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 21:59:22,687 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 21:59:22,688 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2024-10-31 21:59:22,688 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2024-10-31 21:59:22,688 INFO L153 SettingsManager]: * Use old map elimination=false [2024-10-31 21:59:22,693 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2024-10-31 21:59:22,693 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2024-10-31 21:59:22,694 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2024-10-31 21:59:22,694 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 21:59:22,694 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2024-10-31 21:59:22,696 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 21:59:22,696 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 21:59:22,696 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2024-10-31 21:59:22,697 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2024-10-31 21:59:22,697 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2024-10-31 21:59:22,697 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 21:59:22,697 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-31 21:59:22,698 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 21:59:22,698 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2024-10-31 21:59:22,698 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 21:59:22,698 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 21:59:22,699 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 21:59:22,699 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 21:59:22,699 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 21:59:22,700 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2024-10-31 21:59:22,702 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_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 24c3da6ed2fa1f6675634198ae6fe88b58d89aeeff26fce5568b93d74b6b0249 [2024-10-31 21:59:23,042 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 21:59:23,072 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 21:59:23,075 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 21:59:23,077 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 21:59:23,078 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 21:59:23,079 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/termination-crafted/Ackermann-2.c Unable to find full path for "g++" [2024-10-31 21:59:25,130 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 21:59:25,338 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 21:59:25,338 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/sv-benchmarks/c/termination-crafted/Ackermann-2.c [2024-10-31 21:59:25,344 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/data/801b5c919/4d24ebd6f3084582a8f8b57249e61874/FLAG198d18c2f [2024-10-31 21:59:25,769 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/data/801b5c919/4d24ebd6f3084582a8f8b57249e61874 [2024-10-31 21:59:25,771 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 21:59:25,776 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 21:59:25,781 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 21:59:25,782 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 21:59:25,796 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 21:59:25,797 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 09:59:25" (1/1) ... [2024-10-31 21:59:25,798 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c430160 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:59:25, skipping insertion in model container [2024-10-31 21:59:25,804 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 09:59:25" (1/1) ... [2024-10-31 21:59:25,846 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 21:59:26,133 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 21:59:26,140 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 21:59:26,157 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 21:59:26,177 INFO L204 MainTranslator]: Completed translation [2024-10-31 21:59:26,177 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:59:26 WrapperNode [2024-10-31 21:59:26,178 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 21:59:26,179 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 21:59:26,179 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 21:59:26,179 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 21:59:26,188 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:59:26" (1/1) ... [2024-10-31 21:59:26,193 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:59:26" (1/1) ... [2024-10-31 21:59:26,211 INFO L138 Inliner]: procedures = 5, calls = 6, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 22 [2024-10-31 21:59:26,212 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 21:59:26,213 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 21:59:26,213 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 21:59:26,213 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 21:59:26,225 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:59:26" (1/1) ... [2024-10-31 21:59:26,225 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:59:26" (1/1) ... [2024-10-31 21:59:26,226 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:59:26" (1/1) ... [2024-10-31 21:59:26,234 INFO L175 MemorySlicer]: No memory access in input program. [2024-10-31 21:59:26,234 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:59:26" (1/1) ... [2024-10-31 21:59:26,234 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:59:26" (1/1) ... [2024-10-31 21:59:26,236 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:59:26" (1/1) ... [2024-10-31 21:59:26,239 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:59:26" (1/1) ... [2024-10-31 21:59:26,243 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:59:26" (1/1) ... [2024-10-31 21:59:26,244 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:59:26" (1/1) ... [2024-10-31 21:59:26,245 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 21:59:26,246 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 21:59:26,248 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 21:59:26,248 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 21:59:26,249 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:59:26" (1/1) ... [2024-10-31 21:59:26,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:26,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:26,298 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:26,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2024-10-31 21:59:26,360 INFO L130 BoogieDeclarations]: Found specification of procedure Ack [2024-10-31 21:59:26,360 INFO L138 BoogieDeclarations]: Found implementation of procedure Ack [2024-10-31 21:59:26,361 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 21:59:26,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 21:59:26,430 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 21:59:26,432 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 21:59:26,568 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2024-10-31 21:59:26,569 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 21:59:26,584 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 21:59:26,584 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-31 21:59:26,585 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 09:59:26 BoogieIcfgContainer [2024-10-31 21:59:26,585 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 21:59:26,586 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2024-10-31 21:59:26,587 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2024-10-31 21:59:26,592 INFO L274 PluginConnector]: BuchiAutomizer initialized [2024-10-31 21:59:26,593 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-31 21:59:26,593 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 31.10 09:59:25" (1/3) ... [2024-10-31 21:59:26,594 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6e99cdd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 31.10 09:59:26, skipping insertion in model container [2024-10-31 21:59:26,595 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-31 21:59:26,595 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:59:26" (2/3) ... [2024-10-31 21:59:26,595 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6e99cdd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 31.10 09:59:26, skipping insertion in model container [2024-10-31 21:59:26,596 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-31 21:59:26,596 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 09:59:26" (3/3) ... [2024-10-31 21:59:26,598 INFO L332 chiAutomizerObserver]: Analyzing ICFG Ackermann-2.c [2024-10-31 21:59:26,669 INFO L300 stractBuchiCegarLoop]: Interprodecural is true [2024-10-31 21:59:26,670 INFO L301 stractBuchiCegarLoop]: Hoare is None [2024-10-31 21:59:26,670 INFO L302 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2024-10-31 21:59:26,670 INFO L303 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2024-10-31 21:59:26,671 INFO L304 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2024-10-31 21:59:26,671 INFO L305 stractBuchiCegarLoop]: Difference is false [2024-10-31 21:59:26,671 INFO L306 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2024-10-31 21:59:26,672 INFO L310 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2024-10-31 21:59:26,676 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 20 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 states have internal predecessors, (19), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-10-31 21:59:26,702 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2024-10-31 21:59:26,702 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-31 21:59:26,702 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-31 21:59:26,711 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2024-10-31 21:59:26,712 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2024-10-31 21:59:26,712 INFO L332 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2024-10-31 21:59:26,713 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 20 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 states have internal predecessors, (19), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-10-31 21:59:26,719 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2024-10-31 21:59:26,719 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-31 21:59:26,719 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-31 21:59:26,720 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2024-10-31 21:59:26,720 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2024-10-31 21:59:26,732 INFO L745 eck$LassoCheckResult]: Stem: 14#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true; 4#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet3#1, main_#t~nondet4#1, main_#t~ret5#1, main_~x~0#1, main_~y~0#1, main_~r~0#1;havoc main_#t~nondet3#1;main_~x~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1;havoc main_#t~nondet4#1;main_~y~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 17#L19true assume !!(main_~x~0#1 <= 28); 18#L20true assume !!(main_~y~0#1 <= 3); 13#L21true assume !(main_~x~0#1 < 0 || main_~y~0#1 < 0); 19#L24true call main_#t~ret5#1 := Ack(main_~x~0#1, main_~y~0#1);< 8#$Ultimate##0true [2024-10-31 21:59:26,732 INFO L747 eck$LassoCheckResult]: Loop: 8#$Ultimate##0true ~m := #in~m;~n := #in~n; 6#L10true assume !(0 == ~m); 7#L11true assume !(0 == ~n); 9#L12true call #t~ret1 := Ack(~m, ~n - 1);< 8#$Ultimate##0true [2024-10-31 21:59:26,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:59:26,741 INFO L85 PathProgramCache]: Analyzing trace with hash 1333323188, now seen corresponding path program 1 times [2024-10-31 21:59:26,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:59:26,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075913387] [2024-10-31 21:59:26,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:59:26,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:59:26,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 21:59:26,872 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 21:59:26,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 21:59:26,899 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 21:59:26,905 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:59:26,907 INFO L85 PathProgramCache]: Analyzing trace with hash 927715, now seen corresponding path program 1 times [2024-10-31 21:59:26,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:59:26,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238241816] [2024-10-31 21:59:26,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:59:26,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:59:26,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 21:59:26,927 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 21:59:26,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 21:59:26,935 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 21:59:26,937 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:59:26,937 INFO L85 PathProgramCache]: Analyzing trace with hash 2020015126, now seen corresponding path program 1 times [2024-10-31 21:59:26,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:59:26,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577760404] [2024-10-31 21:59:26,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:59:26,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:59:26,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 21:59:26,964 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 21:59:26,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 21:59:27,003 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 21:59:27,304 INFO L204 LassoAnalysis]: Preferences: [2024-10-31 21:59:27,305 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-31 21:59:27,305 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-31 21:59:27,306 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-31 21:59:27,306 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-10-31 21:59:27,306 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:27,306 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-31 21:59:27,307 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-31 21:59:27,307 INFO L132 ssoRankerPreferences]: Filename of dumped script: Ackermann-2.c_Iteration1_Loop [2024-10-31 21:59:27,307 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-31 21:59:27,307 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-31 21:59:27,325 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:27,336 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:27,348 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:27,355 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:27,359 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:27,366 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:27,372 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:27,378 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:27,527 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-31 21:59:27,528 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-10-31 21:59:27,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:27,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:27,533 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:27,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2024-10-31 21:59:27,556 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 21:59:27,556 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 21:59:27,590 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 21:59:27,590 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_#res=0} Honda state: {Ack_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-31 21:59:27,609 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2024-10-31 21:59:27,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:27,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:27,614 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:27,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2024-10-31 21:59:27,617 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 21:59:27,617 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 21:59:27,645 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 21:59:27,645 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_#in~m=4} Honda state: {Ack_#in~m=4} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-31 21:59:27,666 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2024-10-31 21:59:27,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:27,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:27,669 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:27,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2024-10-31 21:59:27,671 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 21:59:27,671 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 21:59:27,717 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 21:59:27,718 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_~m=0} Honda state: {Ack_~m=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-31 21:59:27,737 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2024-10-31 21:59:27,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:27,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:27,740 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:27,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2024-10-31 21:59:27,748 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 21:59:27,748 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 21:59:27,791 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 21:59:27,791 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_#t~ret2=0} Honda state: {Ack_#t~ret2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-31 21:59:27,820 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2024-10-31 21:59:27,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:27,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:27,825 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:27,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2024-10-31 21:59:27,828 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 21:59:27,828 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 21:59:27,846 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 21:59:27,847 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_#t~ret1=0} Honda state: {Ack_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-31 21:59:27,861 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2024-10-31 21:59:27,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:27,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:27,863 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:27,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2024-10-31 21:59:27,865 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 21:59:27,866 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 21:59:27,885 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 21:59:27,885 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_#t~ret0=0} Honda state: {Ack_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-31 21:59:27,904 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2024-10-31 21:59:27,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:27,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:27,908 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:27,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2024-10-31 21:59:27,913 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 21:59:27,913 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 21:59:27,931 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 21:59:27,932 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_~n=0} Honda state: {Ack_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-31 21:59:27,950 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2024-10-31 21:59:27,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:27,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:27,955 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:27,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2024-10-31 21:59:27,959 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 21:59:27,960 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 21:59:27,998 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2024-10-31 21:59:27,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:27,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:28,001 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:28,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2024-10-31 21:59:28,004 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-31 21:59:28,005 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 21:59:28,096 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 21:59:28,097 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_#in~n=-8} Honda state: {Ack_#in~n=-8} Generalized eigenvectors: [{Ack_#in~n=-1}, {Ack_#in~n=0}, {Ack_#in~n=0}] Lambdas: [1, 4, 1] Nus: [0, 0] [2024-10-31 21:59:28,111 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2024-10-31 21:59:28,220 INFO L204 LassoAnalysis]: Preferences: [2024-10-31 21:59:28,220 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-31 21:59:28,221 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-31 21:59:28,221 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-31 21:59:28,221 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-10-31 21:59:28,221 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:28,221 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-31 21:59:28,221 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-31 21:59:28,221 INFO L132 ssoRankerPreferences]: Filename of dumped script: Ackermann-2.c_Iteration1_Lasso [2024-10-31 21:59:28,221 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-31 21:59:28,221 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-31 21:59:28,223 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:28,228 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:28,233 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:28,237 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:28,241 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:28,244 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:28,248 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:28,251 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:28,256 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:28,263 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:28,276 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:28,287 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:28,298 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:28,301 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:28,425 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-31 21:59:28,425 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-10-31 21:59:28,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:28,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:28,428 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:28,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2024-10-31 21:59:28,430 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 21:59:28,431 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 21:59:28,451 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 21:59:28,451 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_#res=0} Honda state: {Ack_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-31 21:59:28,469 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2024-10-31 21:59:28,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:28,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:28,473 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:28,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2024-10-31 21:59:28,476 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 21:59:28,476 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 21:59:28,495 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 21:59:28,496 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_~m=0} Honda state: {Ack_~m=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-31 21:59:28,514 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2024-10-31 21:59:28,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:28,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:28,517 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:28,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2024-10-31 21:59:28,520 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 21:59:28,520 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 21:59:28,541 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 21:59:28,542 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#res#1=0} Honda state: {ULTIMATE.start_main_#res#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-31 21:59:28,562 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2024-10-31 21:59:28,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:28,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:28,564 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:28,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2024-10-31 21:59:28,567 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 21:59:28,567 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 21:59:28,584 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 21:59:28,585 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet4#1=0} Honda state: {ULTIMATE.start_main_#t~nondet4#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-31 21:59:28,603 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2024-10-31 21:59:28,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:28,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:28,606 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:28,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2024-10-31 21:59:28,614 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 21:59:28,614 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 21:59:28,646 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 21:59:28,647 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~r~0#1=0} Honda state: {ULTIMATE.start_main_~r~0#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-31 21:59:28,685 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2024-10-31 21:59:28,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:28,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:28,698 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:28,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2024-10-31 21:59:28,710 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 21:59:28,710 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 21:59:28,737 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 21:59:28,738 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_#t~ret2=0} Honda state: {Ack_#t~ret2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-31 21:59:28,766 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2024-10-31 21:59:28,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:28,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:28,774 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:28,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2024-10-31 21:59:28,782 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 21:59:28,782 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 21:59:28,812 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 21:59:28,812 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_#t~ret6#1=0} Honda state: {ULTIMATE.start_#t~ret6#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-31 21:59:28,835 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2024-10-31 21:59:28,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:28,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:28,839 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:28,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2024-10-31 21:59:28,844 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 21:59:28,845 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 21:59:28,878 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 21:59:28,878 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~ret5#1=0} Honda state: {ULTIMATE.start_main_#t~ret5#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-31 21:59:28,897 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2024-10-31 21:59:28,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:28,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:28,899 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:28,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2024-10-31 21:59:28,901 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 21:59:28,901 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 21:59:28,914 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 21:59:28,915 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_#t~ret1=0} Honda state: {Ack_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-31 21:59:28,934 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Ended with exit code 0 [2024-10-31 21:59:28,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:28,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:28,937 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:28,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2024-10-31 21:59:28,942 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 21:59:28,942 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 21:59:28,981 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Ended with exit code 0 [2024-10-31 21:59:28,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:28,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:28,987 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:28,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2024-10-31 21:59:28,995 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-31 21:59:28,995 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 21:59:29,123 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-10-31 21:59:29,128 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Ended with exit code 0 [2024-10-31 21:59:29,128 INFO L204 LassoAnalysis]: Preferences: [2024-10-31 21:59:29,128 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-31 21:59:29,128 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-31 21:59:29,128 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-31 21:59:29,128 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-10-31 21:59:29,128 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:29,128 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-31 21:59:29,128 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-31 21:59:29,129 INFO L132 ssoRankerPreferences]: Filename of dumped script: Ackermann-2.c_Iteration1_Lasso [2024-10-31 21:59:29,129 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-31 21:59:29,129 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-31 21:59:29,130 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:29,139 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:29,143 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:29,146 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:29,153 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:29,164 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:29,172 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:29,175 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:29,182 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:29,187 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:29,199 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:29,203 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:29,207 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:29,226 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:29,377 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-31 21:59:29,382 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-10-31 21:59:29,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:29,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:29,386 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:29,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2024-10-31 21:59:29,391 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 [2024-10-31 21:59:29,406 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 21:59:29,406 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-31 21:59:29,407 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 21:59:29,407 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 21:59:29,407 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 21:59:29,409 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-31 21:59:29,409 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-31 21:59:29,412 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-31 21:59:29,430 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Ended with exit code 0 [2024-10-31 21:59:29,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:29,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:29,433 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:29,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2024-10-31 21:59:29,435 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 [2024-10-31 21:59:29,449 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 21:59:29,450 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-31 21:59:29,450 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 21:59:29,450 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 21:59:29,450 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 21:59:29,451 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-31 21:59:29,451 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-31 21:59:29,454 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-31 21:59:29,472 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2024-10-31 21:59:29,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:29,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:29,474 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:29,476 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 [2024-10-31 21:59:29,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2024-10-31 21:59:29,491 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 21:59:29,491 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-31 21:59:29,491 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 21:59:29,491 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 21:59:29,491 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 21:59:29,492 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-31 21:59:29,492 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-31 21:59:29,494 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-31 21:59:29,511 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Ended with exit code 0 [2024-10-31 21:59:29,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:29,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:29,513 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:29,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2024-10-31 21:59:29,515 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 [2024-10-31 21:59:29,529 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 21:59:29,529 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-31 21:59:29,529 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 21:59:29,530 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 21:59:29,530 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 21:59:29,530 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-31 21:59:29,530 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-31 21:59:29,532 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-31 21:59:29,550 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Ended with exit code 0 [2024-10-31 21:59:29,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:29,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:29,553 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:29,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2024-10-31 21:59:29,556 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 [2024-10-31 21:59:29,571 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 21:59:29,572 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-31 21:59:29,572 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 21:59:29,572 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 21:59:29,572 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 21:59:29,574 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-31 21:59:29,574 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-31 21:59:29,579 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-31 21:59:29,598 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2024-10-31 21:59:29,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:29,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:29,601 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:29,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2024-10-31 21:59:29,603 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 [2024-10-31 21:59:29,618 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 21:59:29,618 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-31 21:59:29,619 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 21:59:29,619 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 21:59:29,619 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 21:59:29,620 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-31 21:59:29,620 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-31 21:59:29,622 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-31 21:59:29,633 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Ended with exit code 0 [2024-10-31 21:59:29,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:29,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:29,636 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:29,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2024-10-31 21:59:29,638 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 [2024-10-31 21:59:29,649 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 21:59:29,650 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-31 21:59:29,650 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 21:59:29,650 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 21:59:29,650 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 21:59:29,651 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-31 21:59:29,651 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-31 21:59:29,654 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-31 21:59:29,672 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2024-10-31 21:59:29,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:29,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:29,675 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:29,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2024-10-31 21:59:29,678 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 [2024-10-31 21:59:29,692 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 21:59:29,693 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-31 21:59:29,693 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 21:59:29,693 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 21:59:29,693 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 21:59:29,694 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-31 21:59:29,695 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-31 21:59:29,697 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-31 21:59:29,714 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Ended with exit code 0 [2024-10-31 21:59:29,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:29,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:29,716 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:29,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2024-10-31 21:59:29,718 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 [2024-10-31 21:59:29,729 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 21:59:29,729 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-31 21:59:29,729 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 21:59:29,729 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 21:59:29,730 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 21:59:29,730 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-31 21:59:29,730 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-31 21:59:29,732 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-31 21:59:29,750 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Ended with exit code 0 [2024-10-31 21:59:29,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:29,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:29,752 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:29,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2024-10-31 21:59:29,754 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 [2024-10-31 21:59:29,765 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 21:59:29,765 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 21:59:29,765 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2024-10-31 21:59:29,765 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 21:59:29,783 INFO L401 nArgumentSynthesizer]: We have 16 Motzkin's Theorem applications. [2024-10-31 21:59:29,783 INFO L402 nArgumentSynthesizer]: A total of 4 supporting invariants were added. [2024-10-31 21:59:29,804 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-31 21:59:29,823 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2024-10-31 21:59:29,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:29,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:29,826 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:29,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2024-10-31 21:59:29,828 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 [2024-10-31 21:59:29,845 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 21:59:29,845 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-31 21:59:29,846 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 21:59:29,846 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 21:59:29,846 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 21:59:29,847 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-31 21:59:29,847 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-31 21:59:29,851 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-31 21:59:29,864 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2024-10-31 21:59:29,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:29,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:29,866 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:29,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2024-10-31 21:59:29,867 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 [2024-10-31 21:59:29,878 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 21:59:29,879 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-31 21:59:29,879 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 21:59:29,879 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 21:59:29,879 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 21:59:29,879 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-31 21:59:29,879 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-31 21:59:29,883 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-31 21:59:29,901 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2024-10-31 21:59:29,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:29,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:29,904 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:29,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2024-10-31 21:59:29,907 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 [2024-10-31 21:59:29,922 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 21:59:29,922 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 21:59:29,923 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2024-10-31 21:59:29,923 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 21:59:29,933 INFO L401 nArgumentSynthesizer]: We have 16 Motzkin's Theorem applications. [2024-10-31 21:59:29,933 INFO L402 nArgumentSynthesizer]: A total of 4 supporting invariants were added. [2024-10-31 21:59:29,950 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-10-31 21:59:29,999 INFO L443 ModelExtractionUtils]: Simplification made 10 calls to the SMT solver. [2024-10-31 21:59:29,999 INFO L444 ModelExtractionUtils]: 2 out of 11 variables were initially zero. Simplification set additionally 6 variables to zero. [2024-10-31 21:59:30,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:30,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:30,004 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:30,005 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2024-10-31 21:59:30,006 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-10-31 21:59:30,025 INFO L438 nArgumentSynthesizer]: Removed 3 redundant supporting invariants from a total of 4. [2024-10-31 21:59:30,025 INFO L474 LassoAnalysis]: Proved termination. [2024-10-31 21:59:30,025 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(Ack_#in~n) = 1*Ack_#in~n Supporting invariants [1*Ack_#in~n >= 0] [2024-10-31 21:59:30,044 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2024-10-31 21:59:30,050 INFO L156 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2024-10-31 21:59:30,095 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:59:30,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:30,118 INFO L255 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-31 21:59:30,120 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:59:30,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:30,187 INFO L255 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-31 21:59:30,188 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:59:30,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:59:30,313 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 [2024-10-31 21:59:30,316 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 20 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 states have internal predecessors, (19), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 5 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:59:30,449 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2024-10-31 21:59:30,638 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 20 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 states have internal predecessors, (19), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4). Second operand has 5 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 49 states and 64 transitions. Complement of second has 17 states. [2024-10-31 21:59:30,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2024-10-31 21:59:30,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:59:30,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 18 transitions. [2024-10-31 21:59:30,649 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 18 transitions. Stem has 6 letters. Loop has 4 letters. [2024-10-31 21:59:30,650 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 21:59:30,650 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 18 transitions. Stem has 10 letters. Loop has 4 letters. [2024-10-31 21:59:30,650 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 21:59:30,650 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 18 transitions. Stem has 6 letters. Loop has 8 letters. [2024-10-31 21:59:30,651 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 21:59:30,652 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 49 states and 64 transitions. [2024-10-31 21:59:30,656 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2024-10-31 21:59:30,663 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 49 states to 32 states and 43 transitions. [2024-10-31 21:59:30,665 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 23 [2024-10-31 21:59:30,665 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 25 [2024-10-31 21:59:30,666 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 43 transitions. [2024-10-31 21:59:30,668 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-31 21:59:30,668 INFO L218 hiAutomatonCegarLoop]: Abstraction has 32 states and 43 transitions. [2024-10-31 21:59:30,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states and 43 transitions. [2024-10-31 21:59:30,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 28. [2024-10-31 21:59:30,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 20 states have (on average 1.25) internal successors, (25), 21 states have internal predecessors, (25), 6 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2024-10-31 21:59:30,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 36 transitions. [2024-10-31 21:59:30,697 INFO L240 hiAutomatonCegarLoop]: Abstraction has 28 states and 36 transitions. [2024-10-31 21:59:30,697 INFO L425 stractBuchiCegarLoop]: Abstraction has 28 states and 36 transitions. [2024-10-31 21:59:30,697 INFO L332 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2024-10-31 21:59:30,697 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 28 states and 36 transitions. [2024-10-31 21:59:30,698 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2024-10-31 21:59:30,699 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-31 21:59:30,699 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-31 21:59:30,699 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:59:30,699 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2024-10-31 21:59:30,700 INFO L745 eck$LassoCheckResult]: Stem: 172#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 157#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet3#1, main_#t~nondet4#1, main_#t~ret5#1, main_~x~0#1, main_~y~0#1, main_~r~0#1;havoc main_#t~nondet3#1;main_~x~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1;havoc main_#t~nondet4#1;main_~y~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 158#L19 assume !!(main_~x~0#1 <= 28); 173#L20 assume !!(main_~y~0#1 <= 3); 170#L21 assume !(main_~x~0#1 < 0 || main_~y~0#1 < 0); 154#L24 call main_#t~ret5#1 := Ack(main_~x~0#1, main_~y~0#1);< 164#$Ultimate##0 ~m := #in~m;~n := #in~n; 159#L10 assume !(0 == ~m); 160#L11 assume 0 == ~n; 151#L11-1 call #t~ret0 := Ack(~m - 1, 1);< 156#$Ultimate##0 [2024-10-31 21:59:30,700 INFO L747 eck$LassoCheckResult]: Loop: 156#$Ultimate##0 ~m := #in~m;~n := #in~n; 177#L10 assume !(0 == ~m); 176#L11 assume 0 == ~n; 152#L11-1 call #t~ret0 := Ack(~m - 1, 1);< 156#$Ultimate##0 [2024-10-31 21:59:30,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:59:30,701 INFO L85 PathProgramCache]: Analyzing trace with hash 2020015031, now seen corresponding path program 1 times [2024-10-31 21:59:30,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:59:30,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268387853] [2024-10-31 21:59:30,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:59:30,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:59:30,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 21:59:30,711 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 21:59:30,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 21:59:30,726 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 21:59:30,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:59:30,727 INFO L85 PathProgramCache]: Analyzing trace with hash 927620, now seen corresponding path program 1 times [2024-10-31 21:59:30,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:59:30,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136302284] [2024-10-31 21:59:30,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:59:30,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:59:30,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 21:59:30,733 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 21:59:30,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 21:59:30,738 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 21:59:30,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:59:30,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1333503942, now seen corresponding path program 2 times [2024-10-31 21:59:30,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:59:30,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563573809] [2024-10-31 21:59:30,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:59:30,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:59:30,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:30,853 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:59:30,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:59:30,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563573809] [2024-10-31 21:59:30,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563573809] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:59:30,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:59:30,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 21:59:30,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337402856] [2024-10-31 21:59:30,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:59:30,945 INFO L204 LassoAnalysis]: Preferences: [2024-10-31 21:59:30,945 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-31 21:59:30,945 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-31 21:59:30,945 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-31 21:59:30,945 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-10-31 21:59:30,945 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:30,945 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-31 21:59:30,946 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-31 21:59:30,946 INFO L132 ssoRankerPreferences]: Filename of dumped script: Ackermann-2.c_Iteration2_Loop [2024-10-31 21:59:30,946 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-31 21:59:30,946 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-31 21:59:30,947 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:30,950 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:30,953 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:30,957 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:30,960 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:30,969 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:30,977 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:30,980 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:31,053 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-31 21:59:31,053 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-10-31 21:59:31,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:31,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:31,055 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:31,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2024-10-31 21:59:31,059 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 21:59:31,059 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 21:59:31,076 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 21:59:31,077 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_#res=0} Honda state: {Ack_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-31 21:59:31,096 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Forceful destruction successful, exit code 0 [2024-10-31 21:59:31,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:31,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:31,098 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:31,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2024-10-31 21:59:31,103 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 21:59:31,103 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 21:59:31,123 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 21:59:31,123 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_#t~ret2=0} Honda state: {Ack_#t~ret2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-31 21:59:31,141 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Forceful destruction successful, exit code 0 [2024-10-31 21:59:31,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:31,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:31,143 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:31,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2024-10-31 21:59:31,149 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 21:59:31,150 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 21:59:31,171 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 21:59:31,171 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_#t~ret1=0} Honda state: {Ack_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-31 21:59:31,189 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2024-10-31 21:59:31,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:31,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:31,191 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:31,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2024-10-31 21:59:31,194 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 21:59:31,194 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 21:59:31,211 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 21:59:31,211 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_#t~ret0=0} Honda state: {Ack_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-31 21:59:31,235 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Forceful destruction successful, exit code 0 [2024-10-31 21:59:31,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:31,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:31,238 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:31,241 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2024-10-31 21:59:31,244 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 21:59:31,245 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 21:59:31,281 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Forceful destruction successful, exit code 0 [2024-10-31 21:59:31,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:31,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:31,283 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:31,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2024-10-31 21:59:31,289 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-31 21:59:31,289 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 21:59:31,323 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 21:59:31,323 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_#in~m=-4} Honda state: {Ack_#in~m=-4} Generalized eigenvectors: [{Ack_#in~m=0}, {Ack_#in~m=-1}, {Ack_#in~m=0}] Lambdas: [0, 1, 1] Nus: [0, 1] [2024-10-31 21:59:31,339 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Forceful destruction successful, exit code 0 [2024-10-31 21:59:31,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:31,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:31,340 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:31,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2024-10-31 21:59:31,342 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 21:59:31,342 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 21:59:31,366 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Ended with exit code 0 [2024-10-31 21:59:31,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:31,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:31,368 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:31,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2024-10-31 21:59:31,369 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-31 21:59:31,369 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 21:59:31,384 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-10-31 21:59:31,402 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Ended with exit code 0 [2024-10-31 21:59:31,402 INFO L204 LassoAnalysis]: Preferences: [2024-10-31 21:59:31,403 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-31 21:59:31,403 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-31 21:59:31,403 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-31 21:59:31,403 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-10-31 21:59:31,403 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:31,403 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-31 21:59:31,403 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-31 21:59:31,403 INFO L132 ssoRankerPreferences]: Filename of dumped script: Ackermann-2.c_Iteration2_Loop [2024-10-31 21:59:31,403 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-31 21:59:31,403 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-31 21:59:31,404 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:31,409 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:31,412 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:31,415 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:31,418 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:31,421 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:31,429 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:31,435 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:31,513 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-31 21:59:31,513 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-10-31 21:59:31,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:31,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:31,518 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:31,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2024-10-31 21:59:31,522 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 [2024-10-31 21:59:31,536 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 21:59:31,536 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-31 21:59:31,536 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 21:59:31,536 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 21:59:31,536 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 21:59:31,537 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-31 21:59:31,537 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-31 21:59:31,539 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-31 21:59:31,557 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Ended with exit code 0 [2024-10-31 21:59:31,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:31,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:31,563 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:31,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2024-10-31 21:59:31,566 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 [2024-10-31 21:59:31,580 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 21:59:31,581 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-31 21:59:31,581 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 21:59:31,581 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 21:59:31,581 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 21:59:31,582 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-31 21:59:31,582 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-31 21:59:31,584 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-31 21:59:31,603 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Forceful destruction successful, exit code 0 [2024-10-31 21:59:31,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:31,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:31,607 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:31,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2024-10-31 21:59:31,610 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 [2024-10-31 21:59:31,625 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 21:59:31,625 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-31 21:59:31,626 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 21:59:31,626 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 21:59:31,626 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 21:59:31,626 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-31 21:59:31,627 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-31 21:59:31,629 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-31 21:59:31,648 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Forceful destruction successful, exit code 0 [2024-10-31 21:59:31,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:31,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:31,651 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:31,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2024-10-31 21:59:31,654 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 [2024-10-31 21:59:31,669 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 21:59:31,669 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-31 21:59:31,670 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 21:59:31,670 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 21:59:31,670 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 21:59:31,670 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-31 21:59:31,671 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-31 21:59:31,673 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-31 21:59:31,691 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Ended with exit code 0 [2024-10-31 21:59:31,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:31,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:31,693 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:31,696 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 [2024-10-31 21:59:31,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Waiting until timeout for monitored process [2024-10-31 21:59:31,710 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 21:59:31,711 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-31 21:59:31,711 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 21:59:31,711 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 21:59:31,711 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 21:59:31,712 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-31 21:59:31,712 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-31 21:59:31,714 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-31 21:59:31,732 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Forceful destruction successful, exit code 0 [2024-10-31 21:59:31,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:31,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:31,734 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:31,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Waiting until timeout for monitored process [2024-10-31 21:59:31,737 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 [2024-10-31 21:59:31,752 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 21:59:31,752 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-31 21:59:31,752 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 21:59:31,752 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2024-10-31 21:59:31,752 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 21:59:31,754 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2024-10-31 21:59:31,754 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-31 21:59:31,760 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-31 21:59:31,779 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Forceful destruction successful, exit code 0 [2024-10-31 21:59:31,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:31,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:31,781 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:31,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Waiting until timeout for monitored process [2024-10-31 21:59:31,783 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 [2024-10-31 21:59:31,798 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 21:59:31,798 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-31 21:59:31,799 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 21:59:31,799 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 21:59:31,799 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 21:59:31,800 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-31 21:59:31,800 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-31 21:59:31,804 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-10-31 21:59:31,807 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-10-31 21:59:31,808 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2024-10-31 21:59:31,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:31,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:31,810 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:31,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Waiting until timeout for monitored process [2024-10-31 21:59:31,812 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-10-31 21:59:31,812 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-10-31 21:59:31,812 INFO L474 LassoAnalysis]: Proved termination. [2024-10-31 21:59:31,813 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(Ack_#in~n) = -2*Ack_#in~n + 1 Supporting invariants [] [2024-10-31 21:59:31,831 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Forceful destruction successful, exit code 0 [2024-10-31 21:59:31,833 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-10-31 21:59:31,860 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:59:31,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:31,892 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-31 21:59:31,893 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:59:31,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:31,938 INFO L255 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-31 21:59:31,939 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:59:31,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:59:31,981 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 [2024-10-31 21:59:31,981 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 28 states and 36 transitions. cyclomatic complexity: 10 Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:59:32,073 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 28 states and 36 transitions. cyclomatic complexity: 10. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 63 states and 87 transitions. Complement of second has 17 states. [2024-10-31 21:59:32,074 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 [2024-10-31 21:59:32,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:59:32,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 25 transitions. [2024-10-31 21:59:32,078 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 10 letters. Loop has 4 letters. [2024-10-31 21:59:32,079 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 21:59:32,079 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 14 letters. Loop has 4 letters. [2024-10-31 21:59:32,079 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 21:59:32,079 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 10 letters. Loop has 8 letters. [2024-10-31 21:59:32,079 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 21:59:32,080 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 63 states and 87 transitions. [2024-10-31 21:59:32,082 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 11 [2024-10-31 21:59:32,087 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 63 states to 55 states and 79 transitions. [2024-10-31 21:59:32,090 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 42 [2024-10-31 21:59:32,090 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 44 [2024-10-31 21:59:32,091 INFO L73 IsDeterministic]: Start isDeterministic. Operand 55 states and 79 transitions. [2024-10-31 21:59:32,091 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-31 21:59:32,091 INFO L218 hiAutomatonCegarLoop]: Abstraction has 55 states and 79 transitions. [2024-10-31 21:59:32,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states and 79 transitions. [2024-10-31 21:59:32,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 49. [2024-10-31 21:59:32,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 34 states have (on average 1.3235294117647058) internal successors, (45), 37 states have internal predecessors, (45), 10 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (14), 5 states have call predecessors, (14), 8 states have call successors, (14) [2024-10-31 21:59:32,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 69 transitions. [2024-10-31 21:59:32,102 INFO L240 hiAutomatonCegarLoop]: Abstraction has 49 states and 69 transitions. [2024-10-31 21:59:32,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:59:32,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 21:59:32,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 21:59:32,107 INFO L87 Difference]: Start difference. First operand 49 states and 69 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:59:32,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:59:32,169 INFO L93 Difference]: Finished difference Result 54 states and 72 transitions. [2024-10-31 21:59:32,169 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 54 states and 72 transitions. [2024-10-31 21:59:32,172 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 16 [2024-10-31 21:59:32,173 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 54 states to 52 states and 70 transitions. [2024-10-31 21:59:32,174 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 48 [2024-10-31 21:59:32,174 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 48 [2024-10-31 21:59:32,174 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 70 transitions. [2024-10-31 21:59:32,174 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-31 21:59:32,175 INFO L218 hiAutomatonCegarLoop]: Abstraction has 52 states and 70 transitions. [2024-10-31 21:59:32,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states and 70 transitions. [2024-10-31 21:59:32,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 44. [2024-10-31 21:59:32,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 31 states have internal predecessors, (38), 10 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (12), 7 states have call predecessors, (12), 8 states have call successors, (12) [2024-10-31 21:59:32,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 60 transitions. [2024-10-31 21:59:32,182 INFO L240 hiAutomatonCegarLoop]: Abstraction has 44 states and 60 transitions. [2024-10-31 21:59:32,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 21:59:32,183 INFO L425 stractBuchiCegarLoop]: Abstraction has 44 states and 60 transitions. [2024-10-31 21:59:32,183 INFO L332 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2024-10-31 21:59:32,183 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 44 states and 60 transitions. [2024-10-31 21:59:32,184 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 16 [2024-10-31 21:59:32,185 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-31 21:59:32,185 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-31 21:59:32,187 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:59:32,187 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1] [2024-10-31 21:59:32,187 INFO L745 eck$LassoCheckResult]: Stem: 452#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 439#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet3#1, main_#t~nondet4#1, main_#t~ret5#1, main_~x~0#1, main_~y~0#1, main_~r~0#1;havoc main_#t~nondet3#1;main_~x~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1;havoc main_#t~nondet4#1;main_~y~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 440#L19 assume !!(main_~x~0#1 <= 28); 453#L20 assume !!(main_~y~0#1 <= 3); 450#L21 assume !(main_~x~0#1 < 0 || main_~y~0#1 < 0); 436#L24 call main_#t~ret5#1 := Ack(main_~x~0#1, main_~y~0#1);< 454#$Ultimate##0 ~m := #in~m;~n := #in~n; 458#L10 assume !(0 == ~m); 459#L11 assume 0 == ~n; 430#L11-1 call #t~ret0 := Ack(~m - 1, 1);< 442#$Ultimate##0 [2024-10-31 21:59:32,187 INFO L747 eck$LassoCheckResult]: Loop: 442#$Ultimate##0 ~m := #in~m;~n := #in~n; 432#L10 assume !(0 == ~m); 434#L11 assume !(0 == ~n); 441#L12 call #t~ret1 := Ack(~m, ~n - 1);< 431#$Ultimate##0 ~m := #in~m;~n := #in~n; 465#L10 assume !(0 == ~m); 466#L11 assume 0 == ~n; 429#L11-1 call #t~ret0 := Ack(~m - 1, 1);< 442#$Ultimate##0 [2024-10-31 21:59:32,188 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:59:32,188 INFO L85 PathProgramCache]: Analyzing trace with hash 2020015031, now seen corresponding path program 3 times [2024-10-31 21:59:32,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:59:32,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110870622] [2024-10-31 21:59:32,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:59:32,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:59:32,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 21:59:32,198 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 21:59:32,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 21:59:32,208 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 21:59:32,212 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:59:32,212 INFO L85 PathProgramCache]: Analyzing trace with hash 2065796710, now seen corresponding path program 1 times [2024-10-31 21:59:32,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:59:32,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844052861] [2024-10-31 21:59:32,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:59:32,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:59:32,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 21:59:32,229 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 21:59:32,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 21:59:32,243 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 21:59:32,244 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:59:32,244 INFO L85 PathProgramCache]: Analyzing trace with hash -1358662628, now seen corresponding path program 1 times [2024-10-31 21:59:32,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:59:32,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406734059] [2024-10-31 21:59:32,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:59:32,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:59:32,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 21:59:32,268 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 21:59:32,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 21:59:32,281 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 21:59:32,501 INFO L204 LassoAnalysis]: Preferences: [2024-10-31 21:59:32,502 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-31 21:59:32,502 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-31 21:59:32,502 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-31 21:59:32,502 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-10-31 21:59:32,502 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:32,503 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-31 21:59:32,503 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-31 21:59:32,503 INFO L132 ssoRankerPreferences]: Filename of dumped script: Ackermann-2.c_Iteration3_Loop [2024-10-31 21:59:32,503 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-31 21:59:32,503 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-31 21:59:32,504 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:32,508 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:32,511 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:32,514 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:32,517 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:32,523 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:32,531 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:32,535 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:32,582 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Ended with exit code 0 [2024-10-31 21:59:32,611 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-31 21:59:32,612 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-10-31 21:59:32,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:32,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:32,616 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:32,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Waiting until timeout for monitored process [2024-10-31 21:59:32,619 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 21:59:32,619 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 21:59:32,635 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 21:59:32,635 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_~n=0} Honda state: {Ack_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-31 21:59:32,648 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Ended with exit code 0 [2024-10-31 21:59:32,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:32,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:32,650 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:32,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Waiting until timeout for monitored process [2024-10-31 21:59:32,652 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 21:59:32,652 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 21:59:32,664 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 21:59:32,664 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_#t~ret2=0} Honda state: {Ack_#t~ret2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-31 21:59:32,676 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Ended with exit code 0 [2024-10-31 21:59:32,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:32,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:32,678 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:32,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Waiting until timeout for monitored process [2024-10-31 21:59:32,680 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 21:59:32,680 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 21:59:32,693 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 21:59:32,693 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_#t~ret1=0} Honda state: {Ack_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-31 21:59:32,705 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Ended with exit code 0 [2024-10-31 21:59:32,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:32,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:32,707 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:32,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Waiting until timeout for monitored process [2024-10-31 21:59:32,708 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 21:59:32,708 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 21:59:32,721 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 21:59:32,721 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_#t~ret0=0} Honda state: {Ack_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-31 21:59:32,732 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Ended with exit code 0 [2024-10-31 21:59:32,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:32,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:32,734 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:32,735 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 21:59:32,735 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 21:59:32,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Waiting until timeout for monitored process [2024-10-31 21:59:32,748 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 21:59:32,748 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_#in~n=1} Honda state: {Ack_#in~n=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-31 21:59:32,764 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Ended with exit code 0 [2024-10-31 21:59:32,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:32,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:32,767 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:32,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Waiting until timeout for monitored process [2024-10-31 21:59:32,769 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 21:59:32,769 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 21:59:32,801 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Ended with exit code 0 [2024-10-31 21:59:32,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:32,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:32,804 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:32,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Waiting until timeout for monitored process [2024-10-31 21:59:32,806 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-31 21:59:32,807 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 21:59:32,847 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 21:59:32,847 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_#in~m=-4} Honda state: {Ack_#in~m=-4} Generalized eigenvectors: [{Ack_#in~m=0}, {Ack_#in~m=-1}, {Ack_#in~m=0}] Lambdas: [0, 1, 1] Nus: [0, 1] [2024-10-31 21:59:32,864 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Forceful destruction successful, exit code 0 [2024-10-31 21:59:32,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:32,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:32,867 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:32,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Waiting until timeout for monitored process [2024-10-31 21:59:32,869 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 21:59:32,869 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 21:59:32,889 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 21:59:32,889 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_#res=0} Honda state: {Ack_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-31 21:59:32,907 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Ended with exit code 0 [2024-10-31 21:59:32,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:32,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:32,909 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:32,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Waiting until timeout for monitored process [2024-10-31 21:59:32,912 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 21:59:32,912 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 21:59:32,932 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 21:59:32,932 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_~m=0} Honda state: {Ack_~m=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-31 21:59:32,950 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Ended with exit code 0 [2024-10-31 21:59:33,149 INFO L204 LassoAnalysis]: Preferences: [2024-10-31 21:59:33,149 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-31 21:59:33,149 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-31 21:59:33,150 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-31 21:59:33,150 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-10-31 21:59:33,150 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:33,150 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-31 21:59:33,150 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-31 21:59:33,150 INFO L132 ssoRankerPreferences]: Filename of dumped script: Ackermann-2.c_Iteration3_Lasso [2024-10-31 21:59:33,150 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-31 21:59:33,150 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-31 21:59:33,152 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:33,155 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:33,161 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:33,164 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:33,167 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:33,170 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:33,173 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:33,176 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:33,188 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:33,195 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:33,198 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:33,200 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:33,203 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:33,205 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:33,304 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-31 21:59:33,304 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-10-31 21:59:33,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:33,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:33,307 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:33,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Waiting until timeout for monitored process [2024-10-31 21:59:33,309 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 21:59:33,309 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 21:59:33,321 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 21:59:33,321 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#res#1=0} Honda state: {ULTIMATE.start_main_#res#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-31 21:59:33,333 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Ended with exit code 0 [2024-10-31 21:59:33,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:33,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:33,335 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:33,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Waiting until timeout for monitored process [2024-10-31 21:59:33,336 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 21:59:33,336 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 21:59:33,349 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 21:59:33,349 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet4#1=0} Honda state: {ULTIMATE.start_main_#t~nondet4#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-31 21:59:33,361 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Ended with exit code 0 [2024-10-31 21:59:33,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:33,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:33,362 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:33,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (63)] Waiting until timeout for monitored process [2024-10-31 21:59:33,364 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 21:59:33,364 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 21:59:33,379 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 21:59:33,379 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet3#1=0} Honda state: {ULTIMATE.start_main_#t~nondet3#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-31 21:59:33,392 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (63)] Ended with exit code 0 [2024-10-31 21:59:33,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:33,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:33,394 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:33,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (64)] Waiting until timeout for monitored process [2024-10-31 21:59:33,395 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 21:59:33,395 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 21:59:33,407 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 21:59:33,407 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_~n=0} Honda state: {Ack_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-31 21:59:33,424 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (64)] Ended with exit code 0 [2024-10-31 21:59:33,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:33,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:33,425 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:33,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (65)] Waiting until timeout for monitored process [2024-10-31 21:59:33,427 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 21:59:33,427 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 21:59:33,439 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 21:59:33,439 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_#res=0} Honda state: {Ack_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-31 21:59:33,452 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (65)] Ended with exit code 0 [2024-10-31 21:59:33,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:33,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:33,454 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:33,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (66)] Waiting until timeout for monitored process [2024-10-31 21:59:33,455 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 21:59:33,456 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 21:59:33,468 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 21:59:33,468 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_~m=0} Honda state: {Ack_~m=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-31 21:59:33,487 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (66)] Forceful destruction successful, exit code 0 [2024-10-31 21:59:33,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:33,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:33,488 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:33,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (67)] Waiting until timeout for monitored process [2024-10-31 21:59:33,490 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 21:59:33,490 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 21:59:33,502 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 21:59:33,502 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~r~0#1=0} Honda state: {ULTIMATE.start_main_~r~0#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-31 21:59:33,515 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (67)] Ended with exit code 0 [2024-10-31 21:59:33,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:33,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:33,516 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:33,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (68)] Waiting until timeout for monitored process [2024-10-31 21:59:33,518 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 21:59:33,518 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 21:59:33,554 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (68)] Ended with exit code 0 [2024-10-31 21:59:33,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:33,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:33,556 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:33,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (69)] Waiting until timeout for monitored process [2024-10-31 21:59:33,559 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-31 21:59:33,559 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 21:59:33,599 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-10-31 21:59:33,602 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (69)] Forceful destruction successful, exit code 0 [2024-10-31 21:59:33,602 INFO L204 LassoAnalysis]: Preferences: [2024-10-31 21:59:33,602 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-31 21:59:33,602 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-31 21:59:33,602 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-31 21:59:33,603 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-10-31 21:59:33,603 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:33,603 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-31 21:59:33,603 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-31 21:59:33,603 INFO L132 ssoRankerPreferences]: Filename of dumped script: Ackermann-2.c_Iteration3_Lasso [2024-10-31 21:59:33,603 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-31 21:59:33,603 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-31 21:59:33,604 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:33,609 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:33,611 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:33,613 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:33,615 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:33,618 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:33,620 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:33,622 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:33,630 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:33,633 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:33,645 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:33,650 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:33,653 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:33,656 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:33,763 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-31 21:59:33,763 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-10-31 21:59:33,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:33,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:33,766 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:33,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (70)] Waiting until timeout for monitored process [2024-10-31 21:59:33,768 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 [2024-10-31 21:59:33,780 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 21:59:33,780 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-31 21:59:33,780 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 21:59:33,780 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 21:59:33,781 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 21:59:33,782 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-31 21:59:33,782 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-31 21:59:33,784 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-31 21:59:33,803 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (70)] Forceful destruction successful, exit code 0 [2024-10-31 21:59:33,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:33,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:33,805 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:33,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (71)] Waiting until timeout for monitored process [2024-10-31 21:59:33,807 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 [2024-10-31 21:59:33,819 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 21:59:33,819 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-31 21:59:33,819 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 21:59:33,819 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 21:59:33,819 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 21:59:33,820 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-31 21:59:33,820 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-31 21:59:33,821 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-31 21:59:33,833 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (71)] Forceful destruction successful, exit code 0 [2024-10-31 21:59:33,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:33,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:33,834 INFO L229 MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:33,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (72)] Waiting until timeout for monitored process [2024-10-31 21:59:33,836 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 [2024-10-31 21:59:33,847 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 21:59:33,847 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-31 21:59:33,847 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 21:59:33,848 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 21:59:33,848 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 21:59:33,848 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-31 21:59:33,848 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-31 21:59:33,850 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-31 21:59:33,864 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (72)] Ended with exit code 0 [2024-10-31 21:59:33,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:33,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:33,865 INFO L229 MonitoredProcess]: Starting monitored process 73 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:33,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (73)] Waiting until timeout for monitored process [2024-10-31 21:59:33,867 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 [2024-10-31 21:59:33,878 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 21:59:33,878 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-31 21:59:33,878 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 21:59:33,878 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 21:59:33,878 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 21:59:33,879 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-31 21:59:33,879 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-31 21:59:33,881 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-31 21:59:33,899 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (73)] Ended with exit code 0 [2024-10-31 21:59:33,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:33,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:33,900 INFO L229 MonitoredProcess]: Starting monitored process 74 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:33,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (74)] Waiting until timeout for monitored process [2024-10-31 21:59:33,902 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 [2024-10-31 21:59:33,912 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 21:59:33,913 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-31 21:59:33,913 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 21:59:33,913 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 21:59:33,913 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 21:59:33,913 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-31 21:59:33,913 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-31 21:59:33,915 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-31 21:59:33,927 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (74)] Ended with exit code 0 [2024-10-31 21:59:33,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:33,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:33,928 INFO L229 MonitoredProcess]: Starting monitored process 75 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:33,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (75)] Waiting until timeout for monitored process [2024-10-31 21:59:33,930 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 [2024-10-31 21:59:33,941 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 21:59:33,941 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-31 21:59:33,941 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 21:59:33,941 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 21:59:33,941 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 21:59:33,942 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-31 21:59:33,942 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-31 21:59:33,945 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-31 21:59:33,965 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (75)] Ended with exit code 0 [2024-10-31 21:59:33,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:33,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:33,967 INFO L229 MonitoredProcess]: Starting monitored process 76 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:33,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (76)] Waiting until timeout for monitored process [2024-10-31 21:59:33,969 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 [2024-10-31 21:59:33,981 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 21:59:33,981 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-31 21:59:33,981 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 21:59:33,981 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 21:59:33,981 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 21:59:33,982 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-31 21:59:33,982 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-31 21:59:33,986 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-31 21:59:34,002 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (76)] Ended with exit code 0 [2024-10-31 21:59:34,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:34,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:34,003 INFO L229 MonitoredProcess]: Starting monitored process 77 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:34,005 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (77)] Waiting until timeout for monitored process [2024-10-31 21:59:34,006 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 [2024-10-31 21:59:34,017 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 21:59:34,017 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 21:59:34,017 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 21:59:34,018 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 21:59:34,020 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-10-31 21:59:34,021 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-10-31 21:59:34,027 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-31 21:59:34,047 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (77)] Ended with exit code 0 [2024-10-31 21:59:34,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:34,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:34,049 INFO L229 MonitoredProcess]: Starting monitored process 78 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:34,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (78)] Waiting until timeout for monitored process [2024-10-31 21:59:34,053 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 [2024-10-31 21:59:34,069 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 21:59:34,070 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-31 21:59:34,070 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 21:59:34,070 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 21:59:34,070 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 21:59:34,072 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-31 21:59:34,072 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-31 21:59:34,075 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-31 21:59:34,094 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (78)] Ended with exit code 0 [2024-10-31 21:59:34,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:34,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:34,097 INFO L229 MonitoredProcess]: Starting monitored process 79 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:34,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (79)] Waiting until timeout for monitored process [2024-10-31 21:59:34,099 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 [2024-10-31 21:59:34,111 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 21:59:34,112 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 21:59:34,112 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2024-10-31 21:59:34,112 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 21:59:34,118 INFO L401 nArgumentSynthesizer]: We have 16 Motzkin's Theorem applications. [2024-10-31 21:59:34,118 INFO L402 nArgumentSynthesizer]: A total of 4 supporting invariants were added. [2024-10-31 21:59:34,135 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-10-31 21:59:34,161 INFO L443 ModelExtractionUtils]: Simplification made 7 calls to the SMT solver. [2024-10-31 21:59:34,161 INFO L444 ModelExtractionUtils]: 0 out of 11 variables were initially zero. Simplification set additionally 8 variables to zero. [2024-10-31 21:59:34,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:34,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:34,164 INFO L229 MonitoredProcess]: Starting monitored process 80 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:34,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (80)] Waiting until timeout for monitored process [2024-10-31 21:59:34,166 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-10-31 21:59:34,186 INFO L438 nArgumentSynthesizer]: Removed 3 redundant supporting invariants from a total of 4. [2024-10-31 21:59:34,186 INFO L474 LassoAnalysis]: Proved termination. [2024-10-31 21:59:34,186 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(Ack_#in~m) = 1*Ack_#in~m Supporting invariants [1*Ack_#in~m >= 0] [2024-10-31 21:59:34,205 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (79)] Forceful destruction successful, exit code 0 [2024-10-31 21:59:34,208 INFO L156 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2024-10-31 21:59:34,242 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:59:34,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:34,263 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-31 21:59:34,265 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:59:34,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:34,378 INFO L255 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-31 21:59:34,379 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:59:34,502 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-31 21:59:34,503 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.5 stem predicates 4 loop predicates [2024-10-31 21:59:34,503 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 44 states and 60 transitions. cyclomatic complexity: 19 Second operand has 9 states, 8 states have (on average 1.75) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (4), 3 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:59:34,834 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 44 states and 60 transitions. cyclomatic complexity: 19. Second operand has 9 states, 8 states have (on average 1.75) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (4), 3 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 141 states and 197 transitions. Complement of second has 36 states. [2024-10-31 21:59:34,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 12 states 5 stem states 5 non-accepting loop states 1 accepting loop states [2024-10-31 21:59:34,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.75) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (4), 3 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:59:34,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 54 transitions. [2024-10-31 21:59:34,839 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 54 transitions. Stem has 10 letters. Loop has 8 letters. [2024-10-31 21:59:34,839 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 21:59:34,840 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 54 transitions. Stem has 18 letters. Loop has 8 letters. [2024-10-31 21:59:34,840 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 21:59:34,840 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 54 transitions. Stem has 10 letters. Loop has 16 letters. [2024-10-31 21:59:34,840 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 21:59:34,840 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 141 states and 197 transitions. [2024-10-31 21:59:34,845 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 20 [2024-10-31 21:59:34,850 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 141 states to 87 states and 121 transitions. [2024-10-31 21:59:34,850 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 61 [2024-10-31 21:59:34,851 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 63 [2024-10-31 21:59:34,852 INFO L73 IsDeterministic]: Start isDeterministic. Operand 87 states and 121 transitions. [2024-10-31 21:59:34,852 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-31 21:59:34,852 INFO L218 hiAutomatonCegarLoop]: Abstraction has 87 states and 121 transitions. [2024-10-31 21:59:34,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states and 121 transitions. [2024-10-31 21:59:34,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 71. [2024-10-31 21:59:34,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 47 states have (on average 1.2765957446808511) internal successors, (60), 53 states have internal predecessors, (60), 17 states have call successors, (17), 9 states have call predecessors, (17), 7 states have return successors, (23), 8 states have call predecessors, (23), 13 states have call successors, (23) [2024-10-31 21:59:34,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 100 transitions. [2024-10-31 21:59:34,863 INFO L240 hiAutomatonCegarLoop]: Abstraction has 71 states and 100 transitions. [2024-10-31 21:59:34,863 INFO L425 stractBuchiCegarLoop]: Abstraction has 71 states and 100 transitions. [2024-10-31 21:59:34,863 INFO L332 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2024-10-31 21:59:34,863 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 71 states and 100 transitions. [2024-10-31 21:59:34,864 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 20 [2024-10-31 21:59:34,865 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-31 21:59:34,865 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-31 21:59:34,865 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:59:34,866 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2024-10-31 21:59:34,866 INFO L745 eck$LassoCheckResult]: Stem: 772#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 755#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet3#1, main_#t~nondet4#1, main_#t~ret5#1, main_~x~0#1, main_~y~0#1, main_~r~0#1;havoc main_#t~nondet3#1;main_~x~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1;havoc main_#t~nondet4#1;main_~y~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 756#L19 assume !!(main_~x~0#1 <= 28); 775#L20 assume !!(main_~y~0#1 <= 3); 770#L21 assume !(main_~x~0#1 < 0 || main_~y~0#1 < 0); 746#L24 call main_#t~ret5#1 := Ack(main_~x~0#1, main_~y~0#1);< 776#$Ultimate##0 ~m := #in~m;~n := #in~n; 797#L10 assume !(0 == ~m); 795#L11 assume 0 == ~n; 759#L11-1 call #t~ret0 := Ack(~m - 1, 1);< 773#$Ultimate##0 ~m := #in~m;~n := #in~n; 802#L10 assume !(0 == ~m); 750#L11 [2024-10-31 21:59:34,866 INFO L747 eck$LassoCheckResult]: Loop: 750#L11 assume !(0 == ~n); 749#L12 call #t~ret1 := Ack(~m, ~n - 1);< 761#$Ultimate##0 ~m := #in~m;~n := #in~n; 748#L10 assume !(0 == ~m); 750#L11 [2024-10-31 21:59:34,866 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:59:34,866 INFO L85 PathProgramCache]: Analyzing trace with hash -90772997, now seen corresponding path program 4 times [2024-10-31 21:59:34,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:59:34,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168552958] [2024-10-31 21:59:34,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:59:34,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:59:34,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 21:59:34,878 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 21:59:34,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 21:59:34,895 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 21:59:34,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:59:34,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1259875, now seen corresponding path program 2 times [2024-10-31 21:59:34,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:59:34,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457478165] [2024-10-31 21:59:34,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:59:34,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:59:34,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 21:59:34,902 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 21:59:34,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 21:59:34,907 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 21:59:34,908 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:59:34,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1596942755, now seen corresponding path program 2 times [2024-10-31 21:59:34,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:59:34,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535391896] [2024-10-31 21:59:34,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:59:34,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:59:34,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 21:59:34,929 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 21:59:34,945 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (80)] Forceful destruction successful, exit code 0 [2024-10-31 21:59:34,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 21:59:34,957 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 21:59:35,072 INFO L204 LassoAnalysis]: Preferences: [2024-10-31 21:59:35,072 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-31 21:59:35,072 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-31 21:59:35,072 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-31 21:59:35,073 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-10-31 21:59:35,073 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:35,073 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-31 21:59:35,073 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-31 21:59:35,073 INFO L132 ssoRankerPreferences]: Filename of dumped script: Ackermann-2.c_Iteration4_Loop [2024-10-31 21:59:35,073 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-31 21:59:35,073 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-31 21:59:35,075 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:35,078 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:35,081 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:35,084 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:35,092 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:35,104 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:35,206 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-31 21:59:35,206 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-10-31 21:59:35,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:35,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:35,209 INFO L229 MonitoredProcess]: Starting monitored process 81 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:35,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (81)] Waiting until timeout for monitored process [2024-10-31 21:59:35,211 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 21:59:35,211 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 21:59:35,229 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 21:59:35,229 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_#t~ret1=0} Honda state: {Ack_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-31 21:59:35,247 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (81)] Forceful destruction successful, exit code 0 [2024-10-31 21:59:35,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:35,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:35,248 INFO L229 MonitoredProcess]: Starting monitored process 82 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:35,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (82)] Waiting until timeout for monitored process [2024-10-31 21:59:35,250 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 21:59:35,250 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 21:59:35,263 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 21:59:35,263 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_#t~ret0=0} Honda state: {Ack_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-31 21:59:35,277 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (82)] Ended with exit code 0 [2024-10-31 21:59:35,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:35,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:35,279 INFO L229 MonitoredProcess]: Starting monitored process 83 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:35,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (83)] Waiting until timeout for monitored process [2024-10-31 21:59:35,280 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 21:59:35,280 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 21:59:35,297 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 21:59:35,297 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_#res=0} Honda state: {Ack_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-31 21:59:35,312 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (83)] Ended with exit code 0 [2024-10-31 21:59:35,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:35,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:35,314 INFO L229 MonitoredProcess]: Starting monitored process 84 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:35,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (84)] Waiting until timeout for monitored process [2024-10-31 21:59:35,315 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 21:59:35,315 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 21:59:35,338 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 21:59:35,338 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_~m=3, Ack_#in~m=3} Honda state: {Ack_~m=3, Ack_#in~m=3} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-31 21:59:35,351 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (84)] Ended with exit code 0 [2024-10-31 21:59:35,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:35,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:35,353 INFO L229 MonitoredProcess]: Starting monitored process 85 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:35,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (85)] Waiting until timeout for monitored process [2024-10-31 21:59:35,355 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 21:59:35,355 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 21:59:35,389 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (85)] Ended with exit code 0 [2024-10-31 21:59:35,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:35,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:35,391 INFO L229 MonitoredProcess]: Starting monitored process 86 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:35,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (86)] Waiting until timeout for monitored process [2024-10-31 21:59:35,396 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-31 21:59:35,396 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 21:59:35,564 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 21:59:35,564 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_#in~n=2, Ack_~n=-8} Honda state: {Ack_#in~n=2, Ack_~n=-8} Generalized eigenvectors: [{Ack_#in~n=-6, Ack_~n=0}, {Ack_#in~n=-4, Ack_~n=0}, {Ack_#in~n=-1, Ack_~n=-1}] Lambdas: [0, 0, 1] Nus: [0, 0] [2024-10-31 21:59:35,577 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (86)] Forceful destruction successful, exit code 0 [2024-10-31 21:59:35,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:35,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:35,579 INFO L229 MonitoredProcess]: Starting monitored process 87 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:35,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (87)] Waiting until timeout for monitored process [2024-10-31 21:59:35,580 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 21:59:35,580 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 21:59:35,592 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 21:59:35,592 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_#t~ret2=0} Honda state: {Ack_#t~ret2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-31 21:59:35,604 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (87)] Forceful destruction successful, exit code 0 [2024-10-31 21:59:35,868 INFO L204 LassoAnalysis]: Preferences: [2024-10-31 21:59:35,868 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-31 21:59:35,868 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-31 21:59:35,868 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-31 21:59:35,868 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-10-31 21:59:35,868 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:35,868 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-31 21:59:35,869 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-31 21:59:35,869 INFO L132 ssoRankerPreferences]: Filename of dumped script: Ackermann-2.c_Iteration4_Lasso [2024-10-31 21:59:35,869 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-31 21:59:35,869 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-31 21:59:35,870 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:35,888 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:35,892 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:35,904 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:35,907 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:35,909 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:35,911 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:35,914 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:35,916 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:35,919 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:35,922 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:35,925 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:36,087 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-31 21:59:36,087 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-10-31 21:59:36,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:36,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:36,089 INFO L229 MonitoredProcess]: Starting monitored process 88 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:36,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (88)] Waiting until timeout for monitored process [2024-10-31 21:59:36,091 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 21:59:36,091 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 21:59:36,118 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 21:59:36,118 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_~m=0, Ack_#in~m=0} Honda state: {Ack_~m=23, Ack_#in~m=23} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-31 21:59:36,135 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (88)] Forceful destruction successful, exit code 0 [2024-10-31 21:59:36,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:36,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:36,138 INFO L229 MonitoredProcess]: Starting monitored process 89 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:36,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (89)] Waiting until timeout for monitored process [2024-10-31 21:59:36,140 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 21:59:36,140 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 21:59:36,157 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 21:59:36,157 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet3#1=0} Honda state: {ULTIMATE.start_main_#t~nondet3#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-31 21:59:36,175 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (89)] Forceful destruction successful, exit code 0 [2024-10-31 21:59:36,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:36,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:36,176 INFO L229 MonitoredProcess]: Starting monitored process 90 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:36,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (90)] Waiting until timeout for monitored process [2024-10-31 21:59:36,179 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 21:59:36,180 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 21:59:36,216 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (90)] Forceful destruction successful, exit code 0 [2024-10-31 21:59:36,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:36,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:36,218 INFO L229 MonitoredProcess]: Starting monitored process 91 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:36,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (91)] Waiting until timeout for monitored process [2024-10-31 21:59:36,221 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-31 21:59:36,221 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 21:59:36,320 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-10-31 21:59:36,323 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (91)] Ended with exit code 0 [2024-10-31 21:59:36,323 INFO L204 LassoAnalysis]: Preferences: [2024-10-31 21:59:36,323 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-31 21:59:36,323 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-31 21:59:36,323 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-31 21:59:36,323 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-10-31 21:59:36,323 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:36,324 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-31 21:59:36,324 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-31 21:59:36,324 INFO L132 ssoRankerPreferences]: Filename of dumped script: Ackermann-2.c_Iteration4_Lasso [2024-10-31 21:59:36,324 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-31 21:59:36,324 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-31 21:59:36,325 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:36,327 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:36,347 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:36,349 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:36,352 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:36,354 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:36,357 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:36,359 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:36,374 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:36,377 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:36,379 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:36,381 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:36,535 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-31 21:59:36,535 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-10-31 21:59:36,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:36,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:36,536 INFO L229 MonitoredProcess]: Starting monitored process 92 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:36,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (92)] Waiting until timeout for monitored process [2024-10-31 21:59:36,539 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 [2024-10-31 21:59:36,550 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 21:59:36,550 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-31 21:59:36,550 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 21:59:36,550 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 21:59:36,551 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 21:59:36,551 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-31 21:59:36,551 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-31 21:59:36,552 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-31 21:59:36,564 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (92)] Forceful destruction successful, exit code 0 [2024-10-31 21:59:36,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:36,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:36,565 INFO L229 MonitoredProcess]: Starting monitored process 93 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:36,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (93)] Waiting until timeout for monitored process [2024-10-31 21:59:36,566 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 [2024-10-31 21:59:36,577 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 21:59:36,577 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 21:59:36,577 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2024-10-31 21:59:36,578 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 21:59:36,586 INFO L401 nArgumentSynthesizer]: We have 16 Motzkin's Theorem applications. [2024-10-31 21:59:36,587 INFO L402 nArgumentSynthesizer]: A total of 4 supporting invariants were added. [2024-10-31 21:59:36,608 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-10-31 21:59:36,633 INFO L443 ModelExtractionUtils]: Simplification made 10 calls to the SMT solver. [2024-10-31 21:59:36,633 INFO L444 ModelExtractionUtils]: 7 out of 16 variables were initially zero. Simplification set additionally 6 variables to zero. [2024-10-31 21:59:36,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:36,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:36,635 INFO L229 MonitoredProcess]: Starting monitored process 94 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:36,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (94)] Waiting until timeout for monitored process [2024-10-31 21:59:36,636 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-10-31 21:59:36,650 INFO L438 nArgumentSynthesizer]: Removed 3 redundant supporting invariants from a total of 4. [2024-10-31 21:59:36,650 INFO L474 LassoAnalysis]: Proved termination. [2024-10-31 21:59:36,650 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(Ack_~n) = 1*Ack_~n Supporting invariants [1*Ack_~n >= 0] [2024-10-31 21:59:36,662 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (93)] Ended with exit code 0 [2024-10-31 21:59:36,665 INFO L156 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2024-10-31 21:59:36,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:59:36,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:36,705 INFO L255 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-31 21:59:36,706 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:59:36,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:36,771 INFO L255 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-31 21:59:36,771 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:59:36,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:59:36,861 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.3 stem predicates 4 loop predicates [2024-10-31 21:59:36,862 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 71 states and 100 transitions. cyclomatic complexity: 34 Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:59:36,900 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 71 states and 100 transitions. cyclomatic complexity: 34. Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 71 states and 100 transitions. Complement of second has 4 states. [2024-10-31 21:59:36,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2024-10-31 21:59:36,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:59:36,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 8 transitions. [2024-10-31 21:59:36,902 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 8 transitions. Stem has 12 letters. Loop has 4 letters. [2024-10-31 21:59:36,903 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 21:59:36,903 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-10-31 21:59:36,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:59:36,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:36,948 INFO L255 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-31 21:59:36,949 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:59:37,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:37,015 INFO L255 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-31 21:59:37,016 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:59:37,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:59:37,100 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.3 stem predicates 4 loop predicates [2024-10-31 21:59:37,100 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 71 states and 100 transitions. cyclomatic complexity: 34 Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:59:37,131 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 71 states and 100 transitions. cyclomatic complexity: 34. Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 71 states and 100 transitions. Complement of second has 4 states. [2024-10-31 21:59:37,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2024-10-31 21:59:37,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:59:37,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 8 transitions. [2024-10-31 21:59:37,132 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 8 transitions. Stem has 12 letters. Loop has 4 letters. [2024-10-31 21:59:37,132 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 21:59:37,133 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-10-31 21:59:37,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:59:37,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:37,185 INFO L255 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-31 21:59:37,188 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:59:37,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:37,256 INFO L255 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-31 21:59:37,257 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:59:37,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:59:37,352 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.3 stem predicates 4 loop predicates [2024-10-31 21:59:37,353 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 71 states and 100 transitions. cyclomatic complexity: 34 Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:59:37,360 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (94)] Forceful destruction successful, exit code 0 [2024-10-31 21:59:37,531 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 71 states and 100 transitions. cyclomatic complexity: 34. Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 127 states and 178 transitions. Complement of second has 24 states. [2024-10-31 21:59:37,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 3 stem states 3 non-accepting loop states 2 accepting loop states [2024-10-31 21:59:37,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:59:37,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 39 transitions. [2024-10-31 21:59:37,534 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 39 transitions. Stem has 12 letters. Loop has 4 letters. [2024-10-31 21:59:37,534 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 21:59:37,534 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 39 transitions. Stem has 16 letters. Loop has 4 letters. [2024-10-31 21:59:37,535 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 21:59:37,535 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 39 transitions. Stem has 12 letters. Loop has 8 letters. [2024-10-31 21:59:37,535 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 21:59:37,536 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 127 states and 178 transitions. [2024-10-31 21:59:37,539 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 34 [2024-10-31 21:59:37,542 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 127 states to 100 states and 146 transitions. [2024-10-31 21:59:37,542 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 57 [2024-10-31 21:59:37,543 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 68 [2024-10-31 21:59:37,543 INFO L73 IsDeterministic]: Start isDeterministic. Operand 100 states and 146 transitions. [2024-10-31 21:59:37,543 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-31 21:59:37,544 INFO L218 hiAutomatonCegarLoop]: Abstraction has 100 states and 146 transitions. [2024-10-31 21:59:37,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states and 146 transitions. [2024-10-31 21:59:37,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 96. [2024-10-31 21:59:37,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 64 states have (on average 1.28125) internal successors, (82), 72 states have internal predecessors, (82), 23 states have call successors, (23), 12 states have call predecessors, (23), 9 states have return successors, (33), 11 states have call predecessors, (33), 20 states have call successors, (33) [2024-10-31 21:59:37,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 138 transitions. [2024-10-31 21:59:37,557 INFO L240 hiAutomatonCegarLoop]: Abstraction has 96 states and 138 transitions. [2024-10-31 21:59:37,557 INFO L425 stractBuchiCegarLoop]: Abstraction has 96 states and 138 transitions. [2024-10-31 21:59:37,557 INFO L332 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2024-10-31 21:59:37,557 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 96 states and 138 transitions. [2024-10-31 21:59:37,559 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 32 [2024-10-31 21:59:37,559 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-31 21:59:37,559 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-31 21:59:37,564 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:59:37,564 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2024-10-31 21:59:37,565 INFO L745 eck$LassoCheckResult]: Stem: 1344#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 1321#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet3#1, main_#t~nondet4#1, main_#t~ret5#1, main_~x~0#1, main_~y~0#1, main_~r~0#1;havoc main_#t~nondet3#1;main_~x~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1;havoc main_#t~nondet4#1;main_~y~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 1322#L19 assume !!(main_~x~0#1 <= 28); 1345#L20 assume !!(main_~y~0#1 <= 3); 1336#L21 assume !(main_~x~0#1 < 0 || main_~y~0#1 < 0); 1307#L24 call main_#t~ret5#1 := Ack(main_~x~0#1, main_~y~0#1);< 1346#$Ultimate##0 ~m := #in~m;~n := #in~n; 1392#L10 assume !(0 == ~m); 1391#L11 assume !(0 == ~n); 1330#L12 call #t~ret1 := Ack(~m, ~n - 1);< 1390#$Ultimate##0 ~m := #in~m;~n := #in~n; 1398#L10 assume 0 == ~m;#res := 1 + ~n; 1396#AckFINAL assume true; 1328#AckEXIT >#41#return; 1306#L12-1 call #t~ret2 := Ack(~m - 1, #t~ret1);< 1308#$Ultimate##0 [2024-10-31 21:59:37,565 INFO L747 eck$LassoCheckResult]: Loop: 1308#$Ultimate##0 ~m := #in~m;~n := #in~n; 1401#L10 assume !(0 == ~m); 1400#L11 assume !(0 == ~n); 1335#L12 call #t~ret1 := Ack(~m, ~n - 1);< 1308#$Ultimate##0 [2024-10-31 21:59:37,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:59:37,565 INFO L85 PathProgramCache]: Analyzing trace with hash 35829878, now seen corresponding path program 1 times [2024-10-31 21:59:37,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:59:37,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041531536] [2024-10-31 21:59:37,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:59:37,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:59:37,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:37,678 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-31 21:59:37,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:37,729 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:59:37,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:59:37,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041531536] [2024-10-31 21:59:37,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041531536] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 21:59:37,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [927308072] [2024-10-31 21:59:37,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:59:37,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:59:37,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:37,734 INFO L229 MonitoredProcess]: Starting monitored process 95 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 21:59:37,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process [2024-10-31 21:59:37,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:37,779 INFO L255 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-31 21:59:37,780 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:59:37,837 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:59:37,838 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 21:59:37,929 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:59:37,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [927308072] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 21:59:37,929 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 21:59:37,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 11 [2024-10-31 21:59:37,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837339158] [2024-10-31 21:59:37,930 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 21:59:37,930 INFO L750 eck$LassoCheckResult]: stem already infeasible [2024-10-31 21:59:37,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:59:37,931 INFO L85 PathProgramCache]: Analyzing trace with hash 927715, now seen corresponding path program 3 times [2024-10-31 21:59:37,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:59:37,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797060729] [2024-10-31 21:59:37,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:59:37,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:59:37,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 21:59:37,936 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 21:59:37,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 21:59:37,942 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 21:59:38,006 INFO L204 LassoAnalysis]: Preferences: [2024-10-31 21:59:38,006 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-31 21:59:38,006 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-31 21:59:38,006 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-31 21:59:38,007 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-10-31 21:59:38,007 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:38,007 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-31 21:59:38,007 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-31 21:59:38,007 INFO L132 ssoRankerPreferences]: Filename of dumped script: Ackermann-2.c_Iteration5_Loop [2024-10-31 21:59:38,007 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-31 21:59:38,007 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-31 21:59:38,009 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:38,012 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:38,014 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:38,017 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:38,024 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:38,027 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:38,030 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:38,036 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:38,112 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-31 21:59:38,112 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-10-31 21:59:38,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:38,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:38,114 INFO L229 MonitoredProcess]: Starting monitored process 96 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:38,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (96)] Waiting until timeout for monitored process [2024-10-31 21:59:38,115 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 21:59:38,116 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 21:59:38,129 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 21:59:38,129 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_#t~ret1=0} Honda state: {Ack_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-31 21:59:38,142 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (96)] Ended with exit code 0 [2024-10-31 21:59:38,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:38,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:38,144 INFO L229 MonitoredProcess]: Starting monitored process 97 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:38,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (97)] Waiting until timeout for monitored process [2024-10-31 21:59:38,146 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 21:59:38,146 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 21:59:38,159 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 21:59:38,159 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_#res=0} Honda state: {Ack_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-31 21:59:38,172 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (97)] Ended with exit code 0 [2024-10-31 21:59:38,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:38,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:38,173 INFO L229 MonitoredProcess]: Starting monitored process 98 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:38,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (98)] Waiting until timeout for monitored process [2024-10-31 21:59:38,175 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 21:59:38,175 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 21:59:38,188 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 21:59:38,188 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_~n=0} Honda state: {Ack_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-31 21:59:38,199 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (98)] Forceful destruction successful, exit code 0 [2024-10-31 21:59:38,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:38,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:38,201 INFO L229 MonitoredProcess]: Starting monitored process 99 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:38,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (99)] Waiting until timeout for monitored process [2024-10-31 21:59:38,202 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 21:59:38,202 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 21:59:38,226 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (99)] Ended with exit code 0 [2024-10-31 21:59:38,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:38,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:38,227 INFO L229 MonitoredProcess]: Starting monitored process 100 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:38,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (100)] Waiting until timeout for monitored process [2024-10-31 21:59:38,228 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-31 21:59:38,228 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 21:59:38,296 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 21:59:38,296 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_#in~n=-8} Honda state: {Ack_#in~n=-8} Generalized eigenvectors: [{Ack_#in~n=-1}, {Ack_#in~n=0}, {Ack_#in~n=0}] Lambdas: [1, 4, 1] Nus: [0, 0] [2024-10-31 21:59:38,310 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (100)] Ended with exit code 0 [2024-10-31 21:59:38,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:38,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:38,311 INFO L229 MonitoredProcess]: Starting monitored process 101 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:38,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (101)] Waiting until timeout for monitored process [2024-10-31 21:59:38,313 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 21:59:38,313 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 21:59:38,326 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 21:59:38,327 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_#t~ret0=0} Honda state: {Ack_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-31 21:59:38,339 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (101)] Ended with exit code 0 [2024-10-31 21:59:38,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:38,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:38,341 INFO L229 MonitoredProcess]: Starting monitored process 102 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:38,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (102)] Waiting until timeout for monitored process [2024-10-31 21:59:38,342 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 21:59:38,343 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 21:59:38,361 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 21:59:38,361 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_~m=0} Honda state: {Ack_~m=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-31 21:59:38,373 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (102)] Ended with exit code 0 [2024-10-31 21:59:38,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:38,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:38,375 INFO L229 MonitoredProcess]: Starting monitored process 103 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:38,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (103)] Waiting until timeout for monitored process [2024-10-31 21:59:38,376 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 21:59:38,377 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 21:59:38,397 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 21:59:38,397 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_#in~m=4} Honda state: {Ack_#in~m=4} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-31 21:59:38,410 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (103)] Ended with exit code 0 [2024-10-31 21:59:38,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:38,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:38,411 INFO L229 MonitoredProcess]: Starting monitored process 104 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:38,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (104)] Waiting until timeout for monitored process [2024-10-31 21:59:38,413 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 21:59:38,413 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 21:59:38,426 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 21:59:38,427 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_#t~ret2=0} Honda state: {Ack_#t~ret2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-31 21:59:38,440 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (104)] Forceful destruction successful, exit code 0 [2024-10-31 21:59:38,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:59:38,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-31 21:59:38,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-10-31 21:59:38,441 INFO L87 Difference]: Start difference. First operand 96 states and 138 transitions. cyclomatic complexity: 46 Second operand has 11 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-31 21:59:38,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:59:38,546 INFO L93 Difference]: Finished difference Result 89 states and 122 transitions. [2024-10-31 21:59:38,546 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 89 states and 122 transitions. [2024-10-31 21:59:38,548 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 27 [2024-10-31 21:59:38,551 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 89 states to 87 states and 120 transitions. [2024-10-31 21:59:38,551 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 55 [2024-10-31 21:59:38,551 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 55 [2024-10-31 21:59:38,551 INFO L73 IsDeterministic]: Start isDeterministic. Operand 87 states and 120 transitions. [2024-10-31 21:59:38,552 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-31 21:59:38,552 INFO L218 hiAutomatonCegarLoop]: Abstraction has 87 states and 120 transitions. [2024-10-31 21:59:38,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states and 120 transitions. [2024-10-31 21:59:38,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 84. [2024-10-31 21:59:38,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 57 states have (on average 1.263157894736842) internal successors, (72), 64 states have internal predecessors, (72), 19 states have call successors, (19), 11 states have call predecessors, (19), 8 states have return successors, (25), 8 states have call predecessors, (25), 17 states have call successors, (25) [2024-10-31 21:59:38,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 116 transitions. [2024-10-31 21:59:38,566 INFO L240 hiAutomatonCegarLoop]: Abstraction has 84 states and 116 transitions. [2024-10-31 21:59:38,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-31 21:59:38,569 INFO L425 stractBuchiCegarLoop]: Abstraction has 84 states and 116 transitions. [2024-10-31 21:59:38,569 INFO L332 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2024-10-31 21:59:38,569 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 84 states and 116 transitions. [2024-10-31 21:59:38,570 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 27 [2024-10-31 21:59:38,571 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-31 21:59:38,571 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-31 21:59:38,572 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:59:38,573 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:59:38,573 INFO L745 eck$LassoCheckResult]: Stem: 1634#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 1614#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet3#1, main_#t~nondet4#1, main_#t~ret5#1, main_~x~0#1, main_~y~0#1, main_~r~0#1;havoc main_#t~nondet3#1;main_~x~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1;havoc main_#t~nondet4#1;main_~y~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 1615#L19 assume !!(main_~x~0#1 <= 28); 1635#L20 assume !!(main_~y~0#1 <= 3); 1628#L21 assume !(main_~x~0#1 < 0 || main_~y~0#1 < 0); 1600#L24 call main_#t~ret5#1 := Ack(main_~x~0#1, main_~y~0#1);< 1617#$Ultimate##0 ~m := #in~m;~n := #in~n; 1618#L10 assume !(0 == ~m); 1616#L11 assume 0 == ~n; 1609#L11-1 call #t~ret0 := Ack(~m - 1, 1);< 1629#$Ultimate##0 ~m := #in~m;~n := #in~n; 1652#L10 assume !(0 == ~m); 1680#L11 assume !(0 == ~n); 1631#L12 call #t~ret1 := Ack(~m, ~n - 1);< 1654#$Ultimate##0 ~m := #in~m;~n := #in~n; 1672#L10 assume !(0 == ~m); 1656#L11 assume 0 == ~n; 1630#L11-1 call #t~ret0 := Ack(~m - 1, 1);< 1632#$Ultimate##0 ~m := #in~m;~n := #in~n; 1649#L10 assume 0 == ~m;#res := 1 + ~n; 1647#AckFINAL assume true; 1644#AckEXIT >#39#return; 1643#L11-2 #res := #t~ret0;havoc #t~ret0; 1655#AckFINAL assume true; 1653#AckEXIT >#41#return; 1621#L12-1 [2024-10-31 21:59:38,573 INFO L747 eck$LassoCheckResult]: Loop: 1621#L12-1 call #t~ret2 := Ack(~m - 1, #t~ret1);< 1651#$Ultimate##0 ~m := #in~m;~n := #in~n; 1660#L10 assume !(0 == ~m); 1661#L11 assume 0 == ~n; 1641#L11-1 call #t~ret0 := Ack(~m - 1, 1);< 1645#$Ultimate##0 ~m := #in~m;~n := #in~n; 1675#L10 assume !(0 == ~m); 1676#L11 assume !(0 == ~n); 1622#L12 call #t~ret1 := Ack(~m, ~n - 1);< 1666#$Ultimate##0 ~m := #in~m;~n := #in~n; 1662#L10 assume !(0 == ~m); 1664#L11 assume 0 == ~n; 1641#L11-1 call #t~ret0 := Ack(~m - 1, 1);< 1645#$Ultimate##0 ~m := #in~m;~n := #in~n; 1675#L10 assume 0 == ~m;#res := 1 + ~n; 1674#AckFINAL assume true; 1671#AckEXIT >#39#return; 1643#L11-2 #res := #t~ret0;havoc #t~ret0; 1655#AckFINAL assume true; 1653#AckEXIT >#41#return; 1621#L12-1 [2024-10-31 21:59:38,573 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:59:38,574 INFO L85 PathProgramCache]: Analyzing trace with hash -1889032852, now seen corresponding path program 1 times [2024-10-31 21:59:38,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:59:38,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183137560] [2024-10-31 21:59:38,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:59:38,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:59:38,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 21:59:38,583 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 21:59:38,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 21:59:38,591 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 21:59:38,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:59:38,592 INFO L85 PathProgramCache]: Analyzing trace with hash 746066103, now seen corresponding path program 1 times [2024-10-31 21:59:38,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:59:38,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391285252] [2024-10-31 21:59:38,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:59:38,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:59:38,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 21:59:38,600 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 21:59:38,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 21:59:38,607 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 21:59:38,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:59:38,609 INFO L85 PathProgramCache]: Analyzing trace with hash -594947422, now seen corresponding path program 1 times [2024-10-31 21:59:38,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:59:38,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706195981] [2024-10-31 21:59:38,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:59:38,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:59:38,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:38,945 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-31 21:59:38,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:39,045 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 21:59:39,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:39,138 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-10-31 21:59:39,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:39,204 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 21:59:39,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:39,265 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 32 proven. 39 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-10-31 21:59:39,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:59:39,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706195981] [2024-10-31 21:59:39,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706195981] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 21:59:39,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1178330834] [2024-10-31 21:59:39,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:59:39,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:59:39,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:39,268 INFO L229 MonitoredProcess]: Starting monitored process 105 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 21:59:39,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Waiting until timeout for monitored process [2024-10-31 21:59:39,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:39,317 INFO L255 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-31 21:59:39,319 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:59:39,513 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 65 proven. 3 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-10-31 21:59:39,513 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 21:59:39,873 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 33 proven. 22 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-31 21:59:39,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1178330834] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 21:59:39,874 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 21:59:39,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9, 9] total 30 [2024-10-31 21:59:39,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461571768] [2024-10-31 21:59:39,874 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 21:59:40,299 INFO L204 LassoAnalysis]: Preferences: [2024-10-31 21:59:40,299 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-31 21:59:40,299 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-31 21:59:40,299 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-31 21:59:40,299 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-10-31 21:59:40,299 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:40,299 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-31 21:59:40,299 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-31 21:59:40,299 INFO L132 ssoRankerPreferences]: Filename of dumped script: Ackermann-2.c_Iteration6_Loop [2024-10-31 21:59:40,300 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-31 21:59:40,300 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-31 21:59:40,300 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:40,306 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:40,313 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:40,323 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:40,328 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:40,332 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:40,335 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:40,338 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:40,417 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-31 21:59:40,417 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-10-31 21:59:40,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:40,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:40,420 INFO L229 MonitoredProcess]: Starting monitored process 106 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:40,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (106)] Waiting until timeout for monitored process [2024-10-31 21:59:40,422 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 21:59:40,423 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 21:59:40,442 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 21:59:40,443 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_#in~m=1} Honda state: {Ack_#in~m=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-31 21:59:40,461 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (106)] Forceful destruction successful, exit code 0 [2024-10-31 21:59:40,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:40,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:40,463 INFO L229 MonitoredProcess]: Starting monitored process 107 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:40,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (107)] Waiting until timeout for monitored process [2024-10-31 21:59:40,467 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 21:59:40,467 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 21:59:40,485 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 21:59:40,485 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_#res=0} Honda state: {Ack_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-31 21:59:40,503 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (107)] Forceful destruction successful, exit code 0 [2024-10-31 21:59:40,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:40,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:40,506 INFO L229 MonitoredProcess]: Starting monitored process 108 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:40,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (108)] Waiting until timeout for monitored process [2024-10-31 21:59:40,508 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 21:59:40,508 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 21:59:40,546 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (108)] Forceful destruction successful, exit code 0 [2024-10-31 21:59:40,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:40,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:40,548 INFO L229 MonitoredProcess]: Starting monitored process 109 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:40,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (109)] Waiting until timeout for monitored process [2024-10-31 21:59:40,551 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-31 21:59:40,551 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 21:59:40,568 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-10-31 21:59:40,588 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (109)] Ended with exit code 0 [2024-10-31 21:59:40,588 INFO L204 LassoAnalysis]: Preferences: [2024-10-31 21:59:40,588 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-31 21:59:40,588 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-31 21:59:40,589 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-31 21:59:40,589 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-10-31 21:59:40,589 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:40,589 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-31 21:59:40,589 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-31 21:59:40,589 INFO L132 ssoRankerPreferences]: Filename of dumped script: Ackermann-2.c_Iteration6_Loop [2024-10-31 21:59:40,589 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-31 21:59:40,589 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-31 21:59:40,590 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:40,593 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:40,597 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:40,603 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:40,606 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:40,610 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:40,612 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:40,616 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:40,703 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-31 21:59:40,703 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-10-31 21:59:40,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:40,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:40,706 INFO L229 MonitoredProcess]: Starting monitored process 110 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:40,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (110)] Waiting until timeout for monitored process [2024-10-31 21:59:40,708 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 [2024-10-31 21:59:40,724 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 21:59:40,725 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-31 21:59:40,725 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 21:59:40,725 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 21:59:40,725 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 21:59:40,726 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-31 21:59:40,726 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-31 21:59:40,728 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-31 21:59:40,749 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (110)] Forceful destruction successful, exit code 0 [2024-10-31 21:59:40,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:40,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:40,752 INFO L229 MonitoredProcess]: Starting monitored process 111 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:40,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (111)] Waiting until timeout for monitored process [2024-10-31 21:59:40,754 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 [2024-10-31 21:59:40,770 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 21:59:40,770 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-31 21:59:40,770 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 21:59:40,770 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 21:59:40,770 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 21:59:40,771 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-31 21:59:40,771 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-31 21:59:40,773 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-31 21:59:40,793 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (111)] Forceful destruction successful, exit code 0 [2024-10-31 21:59:40,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:40,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:40,795 INFO L229 MonitoredProcess]: Starting monitored process 112 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:40,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (112)] Waiting until timeout for monitored process [2024-10-31 21:59:40,798 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 [2024-10-31 21:59:40,813 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 21:59:40,813 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-31 21:59:40,814 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 21:59:40,814 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 21:59:40,814 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 21:59:40,815 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-31 21:59:40,815 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-31 21:59:40,819 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-10-31 21:59:40,822 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-10-31 21:59:40,822 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2024-10-31 21:59:40,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:40,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:40,825 INFO L229 MonitoredProcess]: Starting monitored process 113 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:40,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (113)] Waiting until timeout for monitored process [2024-10-31 21:59:40,827 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-10-31 21:59:40,827 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-10-31 21:59:40,827 INFO L474 LassoAnalysis]: Proved termination. [2024-10-31 21:59:40,827 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(Ack_#t~ret1) = -1*Ack_#t~ret1 + 1 Supporting invariants [] [2024-10-31 21:59:40,848 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (112)] Forceful destruction successful, exit code 0 [2024-10-31 21:59:40,849 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-10-31 21:59:40,851 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #t~ret1 [2024-10-31 21:59:40,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:59:40,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:40,917 INFO L255 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-31 21:59:40,919 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:59:41,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:41,120 INFO L255 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-31 21:59:41,122 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:59:41,258 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (113)] Ended with exit code 0 [2024-10-31 21:59:41,345 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-31 21:59:41,345 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 [2024-10-31 21:59:41,346 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 84 states and 116 transitions. cyclomatic complexity: 35 Second operand has 11 states, 10 states have (on average 2.9) internal successors, (29), 8 states have internal predecessors, (29), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-10-31 21:59:42,438 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 84 states and 116 transitions. cyclomatic complexity: 35. Second operand has 11 states, 10 states have (on average 2.9) internal successors, (29), 8 states have internal predecessors, (29), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Result 561 states and 909 transitions. Complement of second has 135 states. [2024-10-31 21:59:42,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 24 states 2 stem states 21 non-accepting loop states 1 accepting loop states [2024-10-31 21:59:42,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 2.9) internal successors, (29), 8 states have internal predecessors, (29), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-10-31 21:59:42,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 100 transitions. [2024-10-31 21:59:42,440 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 24 states and 100 transitions. Stem has 25 letters. Loop has 20 letters. [2024-10-31 21:59:42,441 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 21:59:42,441 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 24 states and 100 transitions. Stem has 45 letters. Loop has 20 letters. [2024-10-31 21:59:42,441 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 21:59:42,442 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 24 states and 100 transitions. Stem has 25 letters. Loop has 40 letters. [2024-10-31 21:59:42,442 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 21:59:42,443 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 561 states and 909 transitions. [2024-10-31 21:59:42,454 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 74 [2024-10-31 21:59:42,466 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 561 states to 443 states and 716 transitions. [2024-10-31 21:59:42,466 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 258 [2024-10-31 21:59:42,467 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 260 [2024-10-31 21:59:42,467 INFO L73 IsDeterministic]: Start isDeterministic. Operand 443 states and 716 transitions. [2024-10-31 21:59:42,467 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-31 21:59:42,467 INFO L218 hiAutomatonCegarLoop]: Abstraction has 443 states and 716 transitions. [2024-10-31 21:59:42,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states and 716 transitions. [2024-10-31 21:59:42,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 356. [2024-10-31 21:59:42,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 221 states have (on average 1.2126696832579185) internal successors, (268), 228 states have internal predecessors, (268), 87 states have call successors, (97), 34 states have call predecessors, (97), 48 states have return successors, (196), 93 states have call predecessors, (196), 79 states have call successors, (196) [2024-10-31 21:59:42,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 561 transitions. [2024-10-31 21:59:42,504 INFO L240 hiAutomatonCegarLoop]: Abstraction has 356 states and 561 transitions. [2024-10-31 21:59:42,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:59:42,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-10-31 21:59:42,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=796, Unknown=0, NotChecked=0, Total=870 [2024-10-31 21:59:42,506 INFO L87 Difference]: Start difference. First operand 356 states and 561 transitions. Second operand has 30 states, 26 states have (on average 2.076923076923077) internal successors, (54), 20 states have internal predecessors, (54), 8 states have call successors, (12), 6 states have call predecessors, (12), 10 states have return successors, (12), 9 states have call predecessors, (12), 4 states have call successors, (12) [2024-10-31 21:59:43,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:59:43,482 INFO L93 Difference]: Finished difference Result 294 states and 454 transitions. [2024-10-31 21:59:43,482 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 294 states and 454 transitions. [2024-10-31 21:59:43,488 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 92 [2024-10-31 21:59:43,494 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 294 states to 282 states and 440 transitions. [2024-10-31 21:59:43,495 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 241 [2024-10-31 21:59:43,496 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 241 [2024-10-31 21:59:43,496 INFO L73 IsDeterministic]: Start isDeterministic. Operand 282 states and 440 transitions. [2024-10-31 21:59:43,496 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-31 21:59:43,496 INFO L218 hiAutomatonCegarLoop]: Abstraction has 282 states and 440 transitions. [2024-10-31 21:59:43,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states and 440 transitions. [2024-10-31 21:59:43,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 245. [2024-10-31 21:59:43,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 150 states have (on average 1.2133333333333334) internal successors, (182), 161 states have internal predecessors, (182), 65 states have call successors, (65), 26 states have call predecessors, (65), 30 states have return successors, (117), 57 states have call predecessors, (117), 62 states have call successors, (117) [2024-10-31 21:59:43,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 364 transitions. [2024-10-31 21:59:43,515 INFO L240 hiAutomatonCegarLoop]: Abstraction has 245 states and 364 transitions. [2024-10-31 21:59:43,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-10-31 21:59:43,521 INFO L425 stractBuchiCegarLoop]: Abstraction has 245 states and 364 transitions. [2024-10-31 21:59:43,521 INFO L332 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2024-10-31 21:59:43,521 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 245 states and 364 transitions. [2024-10-31 21:59:43,523 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 92 [2024-10-31 21:59:43,523 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-31 21:59:43,523 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-31 21:59:43,527 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [6, 5, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:59:43,528 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2024-10-31 21:59:43,528 INFO L745 eck$LassoCheckResult]: Stem: 3616#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 3583#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet3#1, main_#t~nondet4#1, main_#t~ret5#1, main_~x~0#1, main_~y~0#1, main_~r~0#1;havoc main_#t~nondet3#1;main_~x~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1;havoc main_#t~nondet4#1;main_~y~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 3584#L19 assume !!(main_~x~0#1 <= 28); 3623#L20 assume !!(main_~y~0#1 <= 3); 3615#L21 assume !(main_~x~0#1 < 0 || main_~y~0#1 < 0); 3581#L24 call main_#t~ret5#1 := Ack(main_~x~0#1, main_~y~0#1);< 3624#$Ultimate##0 ~m := #in~m;~n := #in~n; 3640#L10 assume !(0 == ~m); 3641#L11 assume 0 == ~n; 3586#L11-1 call #t~ret0 := Ack(~m - 1, 1);< 3635#$Ultimate##0 ~m := #in~m;~n := #in~n; 3633#L10 assume !(0 == ~m); 3634#L11 assume !(0 == ~n); 3627#L12 call #t~ret1 := Ack(~m, ~n - 1);< 3631#$Ultimate##0 ~m := #in~m;~n := #in~n; 3629#L10 assume !(0 == ~m); 3626#L11 assume 0 == ~n; 3628#L11-1 call #t~ret0 := Ack(~m - 1, 1);< 3622#$Ultimate##0 ~m := #in~m;~n := #in~n; 3636#L10 assume 0 == ~m;#res := 1 + ~n; 3701#AckFINAL assume true; 3687#AckEXIT >#39#return; 3688#L11-2 #res := #t~ret0;havoc #t~ret0; 3738#AckFINAL assume true; 3737#AckEXIT >#41#return; 3595#L12-1 call #t~ret2 := Ack(~m - 1, #t~ret1);< 3707#$Ultimate##0 ~m := #in~m;~n := #in~n; 3658#L10 assume !(0 == ~m); 3594#L11 assume !(0 == ~n); 3596#L12 call #t~ret1 := Ack(~m, ~n - 1);< 3607#$Ultimate##0 ~m := #in~m;~n := #in~n; 3678#L10 assume !(0 == ~m); 3677#L11 assume !(0 == ~n); 3666#L12 call #t~ret1 := Ack(~m, ~n - 1);< 3675#$Ultimate##0 [2024-10-31 21:59:43,528 INFO L747 eck$LassoCheckResult]: Loop: 3675#$Ultimate##0 ~m := #in~m;~n := #in~n; 3813#L10 assume !(0 == ~m); 3676#L11 assume !(0 == ~n); 3663#L12 call #t~ret1 := Ack(~m, ~n - 1);< 3675#$Ultimate##0 [2024-10-31 21:59:43,529 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:59:43,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1937050114, now seen corresponding path program 2 times [2024-10-31 21:59:43,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:59:43,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755997159] [2024-10-31 21:59:43,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:59:43,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:59:43,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:43,643 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-31 21:59:43,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:43,724 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 21:59:43,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:43,766 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 31 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-31 21:59:43,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:59:43,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755997159] [2024-10-31 21:59:43,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755997159] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 21:59:43,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1760873842] [2024-10-31 21:59:43,770 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-31 21:59:43,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:59:43,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:43,772 INFO L229 MonitoredProcess]: Starting monitored process 114 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 21:59:43,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Waiting until timeout for monitored process [2024-10-31 21:59:43,826 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-31 21:59:43,826 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 21:59:43,827 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-31 21:59:43,829 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:59:43,868 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 28 proven. 7 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-31 21:59:43,868 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 21:59:44,000 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 31 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-31 21:59:44,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1760873842] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 21:59:44,000 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 21:59:44,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 10 [2024-10-31 21:59:44,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189755742] [2024-10-31 21:59:44,001 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 21:59:44,001 INFO L750 eck$LassoCheckResult]: stem already infeasible [2024-10-31 21:59:44,001 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:59:44,001 INFO L85 PathProgramCache]: Analyzing trace with hash 927715, now seen corresponding path program 4 times [2024-10-31 21:59:44,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:59:44,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92156261] [2024-10-31 21:59:44,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:59:44,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:59:44,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 21:59:44,007 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 21:59:44,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 21:59:44,011 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 21:59:44,080 INFO L204 LassoAnalysis]: Preferences: [2024-10-31 21:59:44,081 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-31 21:59:44,081 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-31 21:59:44,081 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-31 21:59:44,081 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-10-31 21:59:44,081 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:44,081 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-31 21:59:44,081 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-31 21:59:44,081 INFO L132 ssoRankerPreferences]: Filename of dumped script: Ackermann-2.c_Iteration7_Loop [2024-10-31 21:59:44,081 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-31 21:59:44,081 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-31 21:59:44,082 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:44,086 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:44,088 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:44,095 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:44,097 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:44,100 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:44,107 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:44,110 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:44,184 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-31 21:59:44,184 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-10-31 21:59:44,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:44,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:44,187 INFO L229 MonitoredProcess]: Starting monitored process 115 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:44,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (115)] Waiting until timeout for monitored process [2024-10-31 21:59:44,189 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 21:59:44,189 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 21:59:44,209 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 21:59:44,209 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_#t~ret1=0} Honda state: {Ack_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-31 21:59:44,228 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (115)] Forceful destruction successful, exit code 0 [2024-10-31 21:59:44,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:44,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:44,231 INFO L229 MonitoredProcess]: Starting monitored process 116 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:44,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (116)] Waiting until timeout for monitored process [2024-10-31 21:59:44,234 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 21:59:44,234 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 21:59:44,255 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 21:59:44,255 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_#t~ret0=0} Honda state: {Ack_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-31 21:59:44,272 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (116)] Forceful destruction successful, exit code 0 [2024-10-31 21:59:44,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:44,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:44,274 INFO L229 MonitoredProcess]: Starting monitored process 117 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:44,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (117)] Waiting until timeout for monitored process [2024-10-31 21:59:44,276 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 21:59:44,276 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 21:59:44,302 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 21:59:44,302 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_#in~m=4} Honda state: {Ack_#in~m=4} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-31 21:59:44,320 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (117)] Forceful destruction successful, exit code 0 [2024-10-31 21:59:44,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:44,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:44,322 INFO L229 MonitoredProcess]: Starting monitored process 118 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:44,324 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 21:59:44,324 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 21:59:44,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (118)] Waiting until timeout for monitored process [2024-10-31 21:59:44,341 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 21:59:44,342 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_~n=0} Honda state: {Ack_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-31 21:59:44,359 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (118)] Forceful destruction successful, exit code 0 [2024-10-31 21:59:44,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:44,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:44,361 INFO L229 MonitoredProcess]: Starting monitored process 119 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:44,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (119)] Waiting until timeout for monitored process [2024-10-31 21:59:44,364 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 21:59:44,364 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 21:59:44,379 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 21:59:44,379 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_#res=0} Honda state: {Ack_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-31 21:59:44,390 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (119)] Ended with exit code 0 [2024-10-31 21:59:44,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:44,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:44,391 INFO L229 MonitoredProcess]: Starting monitored process 120 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:44,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (120)] Waiting until timeout for monitored process [2024-10-31 21:59:44,393 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 21:59:44,393 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 21:59:44,416 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (120)] Ended with exit code 0 [2024-10-31 21:59:44,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:44,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:44,418 INFO L229 MonitoredProcess]: Starting monitored process 121 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:44,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (121)] Waiting until timeout for monitored process [2024-10-31 21:59:44,420 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-31 21:59:44,420 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 21:59:44,455 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 21:59:44,455 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_#in~n=-8} Honda state: {Ack_#in~n=-8} Generalized eigenvectors: [{Ack_#in~n=-1}, {Ack_#in~n=0}, {Ack_#in~n=0}] Lambdas: [1, 15, 0] Nus: [1, 0] [2024-10-31 21:59:44,468 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (121)] Ended with exit code 0 [2024-10-31 21:59:44,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:44,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:44,469 INFO L229 MonitoredProcess]: Starting monitored process 122 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:44,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (122)] Waiting until timeout for monitored process [2024-10-31 21:59:44,471 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 21:59:44,471 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 21:59:44,483 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 21:59:44,484 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_~m=0} Honda state: {Ack_~m=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-31 21:59:44,496 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (122)] Ended with exit code 0 [2024-10-31 21:59:44,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:44,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:44,497 INFO L229 MonitoredProcess]: Starting monitored process 123 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:44,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (123)] Waiting until timeout for monitored process [2024-10-31 21:59:44,499 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 21:59:44,499 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 21:59:44,511 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 21:59:44,511 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_#t~ret2=0} Honda state: {Ack_#t~ret2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-31 21:59:44,522 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (123)] Ended with exit code 0 [2024-10-31 21:59:44,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:59:44,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-31 21:59:44,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-10-31 21:59:44,523 INFO L87 Difference]: Start difference. First operand 245 states and 364 transitions. cyclomatic complexity: 123 Second operand has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 6 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-31 21:59:44,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:59:44,601 INFO L93 Difference]: Finished difference Result 138 states and 200 transitions. [2024-10-31 21:59:44,601 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 138 states and 200 transitions. [2024-10-31 21:59:44,603 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 27 [2024-10-31 21:59:44,606 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 138 states to 134 states and 191 transitions. [2024-10-31 21:59:44,606 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 102 [2024-10-31 21:59:44,606 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 102 [2024-10-31 21:59:44,606 INFO L73 IsDeterministic]: Start isDeterministic. Operand 134 states and 191 transitions. [2024-10-31 21:59:44,607 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-31 21:59:44,607 INFO L218 hiAutomatonCegarLoop]: Abstraction has 134 states and 191 transitions. [2024-10-31 21:59:44,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states and 191 transitions. [2024-10-31 21:59:44,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 117. [2024-10-31 21:59:44,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 77 states have (on average 1.1818181818181819) internal successors, (91), 81 states have internal predecessors, (91), 25 states have call successors, (25), 15 states have call predecessors, (25), 15 states have return successors, (52), 20 states have call predecessors, (52), 23 states have call successors, (52) [2024-10-31 21:59:44,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 168 transitions. [2024-10-31 21:59:44,615 INFO L240 hiAutomatonCegarLoop]: Abstraction has 117 states and 168 transitions. [2024-10-31 21:59:44,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 21:59:44,620 INFO L425 stractBuchiCegarLoop]: Abstraction has 117 states and 168 transitions. [2024-10-31 21:59:44,622 INFO L332 stractBuchiCegarLoop]: ======== Iteration 8 ============ [2024-10-31 21:59:44,622 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 117 states and 168 transitions. [2024-10-31 21:59:44,623 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 27 [2024-10-31 21:59:44,623 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-31 21:59:44,623 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-31 21:59:44,625 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [6, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:59:44,625 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [6, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1] [2024-10-31 21:59:44,626 INFO L745 eck$LassoCheckResult]: Stem: 4236#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 4211#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet3#1, main_#t~nondet4#1, main_#t~ret5#1, main_~x~0#1, main_~y~0#1, main_~r~0#1;havoc main_#t~nondet3#1;main_~x~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1;havoc main_#t~nondet4#1;main_~y~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 4212#L19 assume !!(main_~x~0#1 <= 28); 4237#L20 assume !!(main_~y~0#1 <= 3); 4227#L21 assume !(main_~x~0#1 < 0 || main_~y~0#1 < 0); 4210#L24 call main_#t~ret5#1 := Ack(main_~x~0#1, main_~y~0#1);< 4238#$Ultimate##0 ~m := #in~m;~n := #in~n; 4207#L10 assume !(0 == ~m); 4209#L11 assume !(0 == ~n); 4208#L12 call #t~ret1 := Ack(~m, ~n - 1);< 4269#$Ultimate##0 ~m := #in~m;~n := #in~n; 4283#L10 assume !(0 == ~m); 4213#L11 assume 0 == ~n; 4214#L11-1 call #t~ret0 := Ack(~m - 1, 1);< 4232#$Ultimate##0 ~m := #in~m;~n := #in~n; 4263#L10 assume !(0 == ~m); 4260#L11 assume !(0 == ~n); 4234#L12 call #t~ret1 := Ack(~m, ~n - 1);< 4248#$Ultimate##0 ~m := #in~m;~n := #in~n; 4243#L10 assume !(0 == ~m); 4241#L11 assume 0 == ~n; 4233#L11-1 call #t~ret0 := Ack(~m - 1, 1);< 4235#$Ultimate##0 ~m := #in~m;~n := #in~n; 4265#L10 assume 0 == ~m;#res := 1 + ~n; 4308#AckFINAL assume true; 4307#AckEXIT >#39#return; 4306#L11-2 #res := #t~ret0;havoc #t~ret0; 4305#AckFINAL assume true; 4304#AckEXIT >#41#return; 4229#L12-1 call #t~ret2 := Ack(~m - 1, #t~ret1);< 4288#$Ultimate##0 ~m := #in~m;~n := #in~n; 4309#L10 assume 0 == ~m;#res := 1 + ~n; 4228#AckFINAL assume true; 4230#AckEXIT >#43#return; 4256#L12-2 #res := #t~ret2;havoc #t~ret1;havoc #t~ret2; 4279#AckFINAL assume true; 4266#AckEXIT >#39#return; 4261#L11-2 #res := #t~ret0;havoc #t~ret0; 4258#AckFINAL assume true; 4252#AckEXIT >#41#return; 4198#L12-1 [2024-10-31 21:59:44,626 INFO L747 eck$LassoCheckResult]: Loop: 4198#L12-1 call #t~ret2 := Ack(~m - 1, #t~ret1);< 4219#$Ultimate##0 ~m := #in~m;~n := #in~n; 4276#L10 assume !(0 == ~m); 4242#L11 assume !(0 == ~n); 4195#L12 call #t~ret1 := Ack(~m, ~n - 1);< 4219#$Ultimate##0 ~m := #in~m;~n := #in~n; 4276#L10 assume !(0 == ~m); 4242#L11 assume 0 == ~n; 4221#L11-1 call #t~ret0 := Ack(~m - 1, 1);< 4267#$Ultimate##0 ~m := #in~m;~n := #in~n; 4281#L10 assume !(0 == ~m); 4278#L11 assume !(0 == ~n); 4220#L12 call #t~ret1 := Ack(~m, ~n - 1);< 4223#$Ultimate##0 ~m := #in~m;~n := #in~n; 4272#L10 assume !(0 == ~m); 4271#L11 assume 0 == ~n; 4222#L11-1 call #t~ret0 := Ack(~m - 1, 1);< 4267#$Ultimate##0 ~m := #in~m;~n := #in~n; 4281#L10 assume 0 == ~m;#res := 1 + ~n; 4282#AckFINAL assume true; 4301#AckEXIT >#39#return; 4299#L11-2 #res := #t~ret0;havoc #t~ret0; 4298#AckFINAL assume true; 4285#AckEXIT >#41#return; 4229#L12-1 call #t~ret2 := Ack(~m - 1, #t~ret1);< 4288#$Ultimate##0 ~m := #in~m;~n := #in~n; 4309#L10 assume 0 == ~m;#res := 1 + ~n; 4228#AckFINAL assume true; 4230#AckEXIT >#43#return; 4256#L12-2 #res := #t~ret2;havoc #t~ret1;havoc #t~ret2; 4279#AckFINAL assume true; 4266#AckEXIT >#39#return; 4261#L11-2 #res := #t~ret0;havoc #t~ret0; 4258#AckFINAL assume true; 4252#AckEXIT >#41#return; 4198#L12-1 [2024-10-31 21:59:44,627 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:59:44,627 INFO L85 PathProgramCache]: Analyzing trace with hash -2116653570, now seen corresponding path program 1 times [2024-10-31 21:59:44,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:59:44,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265803600] [2024-10-31 21:59:44,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:59:44,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:59:44,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 21:59:44,640 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 21:59:44,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 21:59:44,652 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 21:59:44,653 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:59:44,655 INFO L85 PathProgramCache]: Analyzing trace with hash 809411411, now seen corresponding path program 1 times [2024-10-31 21:59:44,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:59:44,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369864516] [2024-10-31 21:59:44,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:59:44,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:59:44,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 21:59:44,665 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 21:59:44,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 21:59:44,675 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 21:59:44,680 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:59:44,680 INFO L85 PathProgramCache]: Analyzing trace with hash -64762826, now seen corresponding path program 2 times [2024-10-31 21:59:44,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:59:44,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738924008] [2024-10-31 21:59:44,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:59:44,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:59:44,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:44,883 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-31 21:59:44,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:44,951 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 21:59:44,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:44,989 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 21:59:44,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:45,015 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 21:59:45,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:45,048 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-31 21:59:45,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:45,054 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-31 21:59:45,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:45,117 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 21:59:45,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:45,166 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 21:59:45,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:45,193 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 21:59:45,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:45,212 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-31 21:59:45,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:45,218 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 60 proven. 108 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2024-10-31 21:59:45,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:59:45,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738924008] [2024-10-31 21:59:45,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738924008] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 21:59:45,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049210499] [2024-10-31 21:59:45,219 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-31 21:59:45,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:59:45,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:45,222 INFO L229 MonitoredProcess]: Starting monitored process 124 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 21:59:45,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Waiting until timeout for monitored process [2024-10-31 21:59:45,294 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-31 21:59:45,294 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 21:59:45,295 INFO L255 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-31 21:59:45,297 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:59:45,572 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 49 proven. 100 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2024-10-31 21:59:45,573 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 21:59:46,763 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 69 proven. 84 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2024-10-31 21:59:46,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2049210499] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 21:59:46,764 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 21:59:46,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13, 15] total 32 [2024-10-31 21:59:46,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168535264] [2024-10-31 21:59:46,764 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 21:59:47,276 INFO L204 LassoAnalysis]: Preferences: [2024-10-31 21:59:47,276 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-31 21:59:47,276 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-31 21:59:47,276 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-31 21:59:47,277 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-10-31 21:59:47,277 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:47,277 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-31 21:59:47,277 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-31 21:59:47,277 INFO L132 ssoRankerPreferences]: Filename of dumped script: Ackermann-2.c_Iteration8_Loop [2024-10-31 21:59:47,277 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-31 21:59:47,277 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-31 21:59:47,278 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:47,280 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:47,284 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:47,289 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:47,294 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:47,296 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:47,297 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:47,300 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:47,355 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-31 21:59:47,355 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-10-31 21:59:47,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:47,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:47,357 INFO L229 MonitoredProcess]: Starting monitored process 125 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:47,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (125)] Waiting until timeout for monitored process [2024-10-31 21:59:47,359 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 21:59:47,359 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 21:59:47,371 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 21:59:47,371 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {Ack_#in~n=1} Honda state: {Ack_#in~n=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-31 21:59:47,384 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (125)] Forceful destruction successful, exit code 0 [2024-10-31 21:59:47,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:47,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:47,385 INFO L229 MonitoredProcess]: Starting monitored process 126 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:47,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (126)] Waiting until timeout for monitored process [2024-10-31 21:59:47,386 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 21:59:47,386 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 21:59:47,418 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (126)] Forceful destruction successful, exit code 0 [2024-10-31 21:59:47,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:47,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:47,419 INFO L229 MonitoredProcess]: Starting monitored process 127 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:47,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (127)] Waiting until timeout for monitored process [2024-10-31 21:59:47,421 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-31 21:59:47,421 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 21:59:47,434 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-10-31 21:59:47,446 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (127)] Ended with exit code 0 [2024-10-31 21:59:47,446 INFO L204 LassoAnalysis]: Preferences: [2024-10-31 21:59:47,446 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-31 21:59:47,446 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-31 21:59:47,446 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-31 21:59:47,446 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-10-31 21:59:47,446 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:47,447 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-31 21:59:47,447 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-31 21:59:47,447 INFO L132 ssoRankerPreferences]: Filename of dumped script: Ackermann-2.c_Iteration8_Loop [2024-10-31 21:59:47,447 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-31 21:59:47,447 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-31 21:59:47,447 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:47,450 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:47,452 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:47,456 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:47,460 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:47,464 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:47,466 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:47,468 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:59:47,525 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-31 21:59:47,526 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-10-31 21:59:47,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:47,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:47,528 INFO L229 MonitoredProcess]: Starting monitored process 128 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:47,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (128)] Waiting until timeout for monitored process [2024-10-31 21:59:47,533 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 [2024-10-31 21:59:47,545 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 21:59:47,545 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-31 21:59:47,545 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 21:59:47,545 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 21:59:47,545 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 21:59:47,546 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-31 21:59:47,546 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-31 21:59:47,547 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-31 21:59:47,558 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (128)] Forceful destruction successful, exit code 0 [2024-10-31 21:59:47,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:47,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:47,560 INFO L229 MonitoredProcess]: Starting monitored process 129 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:47,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (129)] Waiting until timeout for monitored process [2024-10-31 21:59:47,561 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 [2024-10-31 21:59:47,572 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 21:59:47,572 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-31 21:59:47,572 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 21:59:47,572 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 21:59:47,572 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 21:59:47,573 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-31 21:59:47,573 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-31 21:59:47,574 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-31 21:59:47,585 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (129)] Ended with exit code 0 [2024-10-31 21:59:47,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:47,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:47,586 INFO L229 MonitoredProcess]: Starting monitored process 130 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:47,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (130)] Waiting until timeout for monitored process [2024-10-31 21:59:47,588 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 [2024-10-31 21:59:47,598 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 21:59:47,599 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-31 21:59:47,599 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 21:59:47,599 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 21:59:47,599 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 21:59:47,600 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-31 21:59:47,600 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-31 21:59:47,602 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-10-31 21:59:47,604 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-10-31 21:59:47,604 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2024-10-31 21:59:47,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:59:47,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:47,605 INFO L229 MonitoredProcess]: Starting monitored process 131 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:47,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (131)] Waiting until timeout for monitored process [2024-10-31 21:59:47,607 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-10-31 21:59:47,607 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-10-31 21:59:47,607 INFO L474 LassoAnalysis]: Proved termination. [2024-10-31 21:59:47,607 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(Ack_#t~ret1) = -1*Ack_#t~ret1 + 2 Supporting invariants [] [2024-10-31 21:59:47,619 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (130)] Forceful destruction successful, exit code 0 [2024-10-31 21:59:47,620 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-10-31 21:59:47,621 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #t~ret1 [2024-10-31 21:59:47,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:59:47,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:47,677 INFO L255 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-31 21:59:47,678 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:59:47,809 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdf455b1-9826-4506-b02e-935a8682cc0b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (131)] Forceful destruction successful, exit code 0 [2024-10-31 21:59:48,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:48,053 INFO L255 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-10-31 21:59:48,055 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:59:48,360 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 15 proven. 28 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-31 21:59:48,360 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 14 loop predicates [2024-10-31 21:59:48,361 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 117 states and 168 transitions. cyclomatic complexity: 54 Second operand has 16 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 10 states have internal predecessors, (34), 7 states have call successors, (11), 4 states have call predecessors, (11), 5 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2024-10-31 21:59:48,532 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 117 states and 168 transitions. cyclomatic complexity: 54. Second operand has 16 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 10 states have internal predecessors, (34), 7 states have call successors, (11), 4 states have call predecessors, (11), 5 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) Result 145 states and 199 transitions. Complement of second has 13 states. [2024-10-31 21:59:48,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 2 stem states 4 non-accepting loop states 1 accepting loop states [2024-10-31 21:59:48,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 10 states have internal predecessors, (34), 7 states have call successors, (11), 4 states have call predecessors, (11), 5 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2024-10-31 21:59:48,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 22 transitions. [2024-10-31 21:59:48,535 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 22 transitions. Stem has 40 letters. Loop has 35 letters. [2024-10-31 21:59:48,535 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 21:59:48,535 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-10-31 21:59:48,548 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:59:48,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:48,595 INFO L255 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-31 21:59:48,597 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:59:48,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:48,960 INFO L255 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-10-31 21:59:48,987 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:59:49,347 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 15 proven. 28 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-31 21:59:49,348 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 14 loop predicates [2024-10-31 21:59:49,348 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 117 states and 168 transitions. cyclomatic complexity: 54 Second operand has 16 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 10 states have internal predecessors, (34), 7 states have call successors, (11), 4 states have call predecessors, (11), 5 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2024-10-31 21:59:49,506 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 117 states and 168 transitions. cyclomatic complexity: 54. Second operand has 16 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 10 states have internal predecessors, (34), 7 states have call successors, (11), 4 states have call predecessors, (11), 5 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) Result 145 states and 199 transitions. Complement of second has 13 states. [2024-10-31 21:59:49,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 2 stem states 4 non-accepting loop states 1 accepting loop states [2024-10-31 21:59:49,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 10 states have internal predecessors, (34), 7 states have call successors, (11), 4 states have call predecessors, (11), 5 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2024-10-31 21:59:49,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 22 transitions. [2024-10-31 21:59:49,508 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 22 transitions. Stem has 40 letters. Loop has 35 letters. [2024-10-31 21:59:49,508 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 21:59:49,508 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-10-31 21:59:49,521 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:59:49,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:49,572 INFO L255 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-31 21:59:49,573 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:59:50,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:50,037 INFO L255 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-10-31 21:59:50,039 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:59:50,421 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 15 proven. 28 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-31 21:59:50,421 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 14 loop predicates [2024-10-31 21:59:50,422 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 117 states and 168 transitions. cyclomatic complexity: 54 Second operand has 16 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 10 states have internal predecessors, (34), 7 states have call successors, (11), 4 states have call predecessors, (11), 5 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2024-10-31 21:59:51,763 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 117 states and 168 transitions. cyclomatic complexity: 54. Second operand has 16 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 10 states have internal predecessors, (34), 7 states have call successors, (11), 4 states have call predecessors, (11), 5 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) Result 2761 states and 6215 transitions. Complement of second has 684 states. [2024-10-31 21:59:51,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 27 states 2 stem states 23 non-accepting loop states 1 accepting loop states [2024-10-31 21:59:51,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 10 states have internal predecessors, (34), 7 states have call successors, (11), 4 states have call predecessors, (11), 5 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2024-10-31 21:59:51,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 98 transitions. [2024-10-31 21:59:51,767 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 27 states and 98 transitions. Stem has 40 letters. Loop has 35 letters. [2024-10-31 21:59:51,768 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 21:59:51,769 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 27 states and 98 transitions. Stem has 75 letters. Loop has 35 letters. [2024-10-31 21:59:51,771 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 21:59:51,773 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 27 states and 98 transitions. Stem has 40 letters. Loop has 70 letters. [2024-10-31 21:59:51,775 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 21:59:51,775 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 2761 states and 6215 transitions. [2024-10-31 21:59:51,827 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 65 [2024-10-31 21:59:51,870 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 2761 states to 522 states and 733 transitions. [2024-10-31 21:59:51,870 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 300 [2024-10-31 21:59:51,871 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 328 [2024-10-31 21:59:51,871 INFO L73 IsDeterministic]: Start isDeterministic. Operand 522 states and 733 transitions. [2024-10-31 21:59:51,873 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-31 21:59:51,875 INFO L218 hiAutomatonCegarLoop]: Abstraction has 522 states and 733 transitions. [2024-10-31 21:59:51,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states and 733 transitions. [2024-10-31 21:59:51,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 448. [2024-10-31 21:59:51,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 272 states have (on average 1.1323529411764706) internal successors, (308), 279 states have internal predecessors, (308), 112 states have call successors, (121), 53 states have call predecessors, (121), 64 states have return successors, (190), 115 states have call predecessors, (190), 105 states have call successors, (190) [2024-10-31 21:59:51,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 619 transitions. [2024-10-31 21:59:51,908 INFO L240 hiAutomatonCegarLoop]: Abstraction has 448 states and 619 transitions. [2024-10-31 21:59:51,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:59:51,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-10-31 21:59:51,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=955, Unknown=0, NotChecked=0, Total=1056 [2024-10-31 21:59:51,909 INFO L87 Difference]: Start difference. First operand 448 states and 619 transitions. Second operand has 33 states, 28 states have (on average 2.2142857142857144) internal successors, (62), 21 states have internal predecessors, (62), 12 states have call successors, (17), 4 states have call predecessors, (17), 13 states have return successors, (25), 16 states have call predecessors, (25), 10 states have call successors, (25)