./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex4.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex4.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 702a5cb4e98140bb9dbcfd0fb89e24e07deb7e8ce40ea61b05e70376d58bbad7 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-23 14:14:11,449 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-23 14:14:11,474 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-23 14:14:11,509 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-23 14:14:11,509 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-23 14:14:11,510 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-23 14:14:11,512 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-23 14:14:11,513 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-23 14:14:11,515 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-23 14:14:11,518 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-23 14:14:11,518 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-23 14:14:11,520 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-23 14:14:11,520 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-23 14:14:11,522 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-23 14:14:11,522 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-23 14:14:11,525 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-23 14:14:11,525 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-23 14:14:11,526 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-23 14:14:11,527 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-23 14:14:11,531 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-23 14:14:11,532 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-23 14:14:11,533 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-23 14:14:11,534 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-23 14:14:11,534 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-23 14:14:11,535 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-23 14:14:11,540 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-23 14:14:11,540 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-23 14:14:11,540 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-23 14:14:11,541 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-23 14:14:11,541 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-23 14:14:11,542 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-23 14:14:11,542 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-23 14:14:11,544 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-23 14:14:11,545 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-23 14:14:11,545 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-23 14:14:11,546 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-23 14:14:11,546 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-23 14:14:11,546 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-23 14:14:11,546 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-23 14:14:11,546 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-23 14:14:11,547 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-23 14:14:11,548 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-23 14:14:11,549 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2022-07-23 14:14:11,571 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-23 14:14:11,572 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-23 14:14:11,572 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-23 14:14:11,572 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-23 14:14:11,573 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-23 14:14:11,573 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-23 14:14:11,573 INFO L138 SettingsManager]: * Use SBE=true [2022-07-23 14:14:11,573 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-07-23 14:14:11,574 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-07-23 14:14:11,574 INFO L138 SettingsManager]: * Use old map elimination=false [2022-07-23 14:14:11,574 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-07-23 14:14:11,574 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-07-23 14:14:11,575 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-07-23 14:14:11,575 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-23 14:14:11,575 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-23 14:14:11,576 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-23 14:14:11,576 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-23 14:14:11,576 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-07-23 14:14:11,576 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-07-23 14:14:11,577 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-07-23 14:14:11,577 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-23 14:14:11,577 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-07-23 14:14:11,577 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-23 14:14:11,577 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-07-23 14:14:11,577 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-23 14:14:11,578 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-23 14:14:11,578 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-23 14:14:11,578 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-23 14:14:11,579 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-07-23 14:14:11,579 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 702a5cb4e98140bb9dbcfd0fb89e24e07deb7e8ce40ea61b05e70376d58bbad7 [2022-07-23 14:14:11,747 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-23 14:14:11,759 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-23 14:14:11,764 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-23 14:14:11,765 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-23 14:14:11,765 INFO L275 PluginConnector]: CDTParser initialized [2022-07-23 14:14:11,766 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex4.c [2022-07-23 14:14:11,810 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/755b79b9f/233cc7892e384d67bc5a938efbde1930/FLAG6b779f7a3 [2022-07-23 14:14:12,135 INFO L306 CDTParser]: Found 1 translation units. [2022-07-23 14:14:12,136 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex4.c [2022-07-23 14:14:12,141 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/755b79b9f/233cc7892e384d67bc5a938efbde1930/FLAG6b779f7a3 [2022-07-23 14:14:12,592 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/755b79b9f/233cc7892e384d67bc5a938efbde1930 [2022-07-23 14:14:12,593 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-23 14:14:12,594 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-23 14:14:12,595 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-23 14:14:12,595 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-23 14:14:12,597 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-23 14:14:12,598 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 02:14:12" (1/1) ... [2022-07-23 14:14:12,598 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36ad2616 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:14:12, skipping insertion in model container [2022-07-23 14:14:12,599 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 02:14:12" (1/1) ... [2022-07-23 14:14:12,603 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-23 14:14:12,610 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-23 14:14:12,736 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 14:14:12,739 INFO L203 MainTranslator]: Completed pre-run [2022-07-23 14:14:12,749 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 14:14:12,757 INFO L208 MainTranslator]: Completed translation [2022-07-23 14:14:12,758 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:14:12 WrapperNode [2022-07-23 14:14:12,758 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-23 14:14:12,759 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-23 14:14:12,759 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-23 14:14:12,759 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-23 14:14:12,765 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:14:12" (1/1) ... [2022-07-23 14:14:12,768 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:14:12" (1/1) ... [2022-07-23 14:14:12,778 INFO L137 Inliner]: procedures = 5, calls = 5, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 13 [2022-07-23 14:14:12,779 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-23 14:14:12,779 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-23 14:14:12,779 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-23 14:14:12,779 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-23 14:14:12,784 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:14:12" (1/1) ... [2022-07-23 14:14:12,784 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:14:12" (1/1) ... [2022-07-23 14:14:12,785 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:14:12" (1/1) ... [2022-07-23 14:14:12,785 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:14:12" (1/1) ... [2022-07-23 14:14:12,787 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:14:12" (1/1) ... [2022-07-23 14:14:12,789 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:14:12" (1/1) ... [2022-07-23 14:14:12,789 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:14:12" (1/1) ... [2022-07-23 14:14:12,790 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-23 14:14:12,792 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-23 14:14:12,792 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-23 14:14:12,792 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-23 14:14:12,793 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:14:12" (1/1) ... [2022-07-23 14:14:12,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:14:12,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:14:12,813 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:14:12,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-07-23 14:14:12,855 INFO L130 BoogieDeclarations]: Found specification of procedure p [2022-07-23 14:14:12,855 INFO L138 BoogieDeclarations]: Found implementation of procedure p [2022-07-23 14:14:12,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-23 14:14:12,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-23 14:14:12,893 INFO L234 CfgBuilder]: Building ICFG [2022-07-23 14:14:12,894 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-23 14:14:12,980 INFO L275 CfgBuilder]: Performing block encoding [2022-07-23 14:14:12,985 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-23 14:14:12,986 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-23 14:14:12,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 02:14:12 BoogieIcfgContainer [2022-07-23 14:14:12,987 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-23 14:14:12,988 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-07-23 14:14:12,989 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-07-23 14:14:12,991 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-07-23 14:14:12,991 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-23 14:14:12,991 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 23.07 02:14:12" (1/3) ... [2022-07-23 14:14:12,993 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7bff2401 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.07 02:14:12, skipping insertion in model container [2022-07-23 14:14:12,993 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-23 14:14:12,993 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:14:12" (2/3) ... [2022-07-23 14:14:12,993 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7bff2401 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.07 02:14:12, skipping insertion in model container [2022-07-23 14:14:12,994 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-23 14:14:12,994 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 02:14:12" (3/3) ... [2022-07-23 14:14:12,995 INFO L354 chiAutomizerObserver]: Analyzing ICFG LeeJonesBen-Amram-POPL2001-Ex4.c [2022-07-23 14:14:13,043 INFO L255 stractBuchiCegarLoop]: Interprodecural is true [2022-07-23 14:14:13,044 INFO L256 stractBuchiCegarLoop]: Hoare is false [2022-07-23 14:14:13,044 INFO L257 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-07-23 14:14:13,044 INFO L258 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-07-23 14:14:13,044 INFO L259 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-07-23 14:14:13,044 INFO L260 stractBuchiCegarLoop]: Difference is false [2022-07-23 14:14:13,045 INFO L261 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-07-23 14:14:13,045 INFO L265 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-07-23 14:14:13,048 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 18 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-23 14:14:13,068 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-07-23 14:14:13,069 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-23 14:14:13,069 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-23 14:14:13,078 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2022-07-23 14:14:13,078 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-07-23 14:14:13,079 INFO L287 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-07-23 14:14:13,079 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 18 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-23 14:14:13,081 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-07-23 14:14:13,081 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-23 14:14:13,082 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-23 14:14:13,082 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2022-07-23 14:14:13,082 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-07-23 14:14:13,087 INFO L752 eck$LassoCheckResult]: Stem: 6#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 14#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet2#1, main_#t~nondet3#1, main_#t~nondet4#1, main_#t~ret5#1, main_~m~0#1, main_~n~0#1, main_~r~0#1;main_~m~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~n~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1;main_~r~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 16#L28true assume (main_~m~0#1 >= 0 && main_~n~0#1 >= 0) && main_~r~0#1 >= 0; 9#L29true call main_#t~ret5#1 := p(main_~m~0#1, main_~n~0#1, main_~r~0#1);< 17#pENTRYtrue [2022-07-23 14:14:13,087 INFO L754 eck$LassoCheckResult]: Loop: 17#pENTRYtrue ~m := #in~m;~n := #in~n;~r := #in~r; 2#L13true assume ~r > 0; 18#L14true call #t~ret0 := p(~m, ~r - 1, ~n);< 17#pENTRYtrue [2022-07-23 14:14:13,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:14:13,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1356593, now seen corresponding path program 1 times [2022-07-23 14:14:13,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:14:13,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764771542] [2022-07-23 14:14:13,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:14:13,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:14:13,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:14:13,156 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:14:13,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:14:13,177 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:14:13,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:14:13,180 INFO L85 PathProgramCache]: Analyzing trace with hash 29913, now seen corresponding path program 1 times [2022-07-23 14:14:13,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:14:13,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036492446] [2022-07-23 14:14:13,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:14:13,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:14:13,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:14:13,193 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:14:13,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:14:13,203 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:14:13,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:14:13,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1759556521, now seen corresponding path program 1 times [2022-07-23 14:14:13,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:14:13,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063673472] [2022-07-23 14:14:13,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:14:13,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:14:13,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:14:13,225 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:14:13,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:14:13,242 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:14:13,390 INFO L210 LassoAnalysis]: Preferences: [2022-07-23 14:14:13,391 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-23 14:14:13,391 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-23 14:14:13,391 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-23 14:14:13,391 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-23 14:14:13,391 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:14:13,391 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-23 14:14:13,391 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-23 14:14:13,392 INFO L133 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4.c_Iteration1_Loop [2022-07-23 14:14:13,392 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-23 14:14:13,392 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-23 14:14:13,401 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:14:13,406 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:14:13,408 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:14:13,410 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:14:13,412 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:14:13,416 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:14:13,419 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:14:13,425 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:14:13,496 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-23 14:14:13,498 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-23 14:14:13,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:14:13,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:14:13,501 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:14:13,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2022-07-23 14:14:13,504 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 14:14:13,505 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:14:13,525 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-23 14:14:13,525 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_#res=0} Honda state: {p_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-23 14:14:13,544 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2022-07-23 14:14:13,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:14:13,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:14:13,546 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:14:13,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2022-07-23 14:14:13,549 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 14:14:13,549 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:14:13,570 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-23 14:14:13,571 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_#t~ret0=0} Honda state: {p_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-23 14:14:13,588 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2022-07-23 14:14:13,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:14:13,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:14:13,597 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:14:13,603 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 14:14:13,603 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:14:13,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-07-23 14:14:13,621 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-23 14:14:13,621 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_~m=0} Honda state: {p_~m=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-23 14:14:13,640 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2022-07-23 14:14:13,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:14:13,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:14:13,642 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:14:13,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2022-07-23 14:14:13,644 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 14:14:13,645 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:14:13,665 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-23 14:14:13,666 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_~n=0} Honda state: {p_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-23 14:14:13,684 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2022-07-23 14:14:13,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:14:13,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:14:13,687 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:14:13,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2022-07-23 14:14:13,689 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 14:14:13,689 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:14:13,710 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-23 14:14:13,711 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_#t~ret1=0} Honda state: {p_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-23 14:14:13,728 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2022-07-23 14:14:13,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:14:13,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:14:13,731 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:14:13,732 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2022-07-23 14:14:13,733 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 14:14:13,733 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:14:13,754 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-23 14:14:13,755 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_#in~m=0} Honda state: {p_#in~m=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-23 14:14:13,773 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2022-07-23 14:14:13,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:14:13,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:14:13,784 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:14:13,785 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2022-07-23 14:14:13,786 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 14:14:13,786 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:14:13,822 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2022-07-23 14:14:13,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:14:13,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:14:13,824 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:14:13,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2022-07-23 14:14:13,827 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-23 14:14:13,827 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:14:13,887 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-23 14:14:13,890 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2022-07-23 14:14:13,891 INFO L210 LassoAnalysis]: Preferences: [2022-07-23 14:14:13,891 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-23 14:14:13,891 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-23 14:14:13,891 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-23 14:14:13,891 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-23 14:14:13,891 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:14:13,891 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-23 14:14:13,891 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-23 14:14:13,891 INFO L133 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4.c_Iteration1_Loop [2022-07-23 14:14:13,891 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-23 14:14:13,891 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-23 14:14:13,892 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:14:13,897 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:14:13,900 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:14:13,903 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:14:13,905 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:14:13,909 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:14:13,912 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:14:13,919 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:14:13,980 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-23 14:14:13,983 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-23 14:14:13,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:14:13,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:14:13,991 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:14:13,992 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2022-07-23 14:14:13,993 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-23 14:14:14,000 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 14:14:14,000 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-23 14:14:14,000 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 14:14:14,000 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 14:14:14,000 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 14:14:14,002 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-23 14:14:14,002 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-23 14:14:14,011 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-23 14:14:14,028 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2022-07-23 14:14:14,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:14:14,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:14:14,029 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:14:14,035 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-23 14:14:14,041 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 14:14:14,041 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-23 14:14:14,041 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 14:14:14,041 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 14:14:14,041 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 14:14:14,041 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-23 14:14:14,041 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-23 14:14:14,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2022-07-23 14:14:14,053 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-23 14:14:14,070 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2022-07-23 14:14:14,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:14:14,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:14:14,072 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:14:14,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2022-07-23 14:14:14,074 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-23 14:14:14,080 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 14:14:14,080 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-23 14:14:14,080 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 14:14:14,080 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 14:14:14,080 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 14:14:14,081 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-23 14:14:14,081 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-23 14:14:14,091 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-23 14:14:14,106 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2022-07-23 14:14:14,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:14:14,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:14:14,107 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:14:14,107 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2022-07-23 14:14:14,108 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-23 14:14:14,114 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 14:14:14,114 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-23 14:14:14,114 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 14:14:14,114 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 14:14:14,114 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 14:14:14,115 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-23 14:14:14,115 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-23 14:14:14,123 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-23 14:14:14,140 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2022-07-23 14:14:14,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:14:14,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:14:14,141 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:14:14,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2022-07-23 14:14:14,142 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-23 14:14:14,148 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 14:14:14,148 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-23 14:14:14,149 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 14:14:14,149 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 14:14:14,149 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 14:14:14,149 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-23 14:14:14,149 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-23 14:14:14,155 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-23 14:14:14,170 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2022-07-23 14:14:14,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:14:14,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:14:14,174 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:14:14,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2022-07-23 14:14:14,175 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-23 14:14:14,181 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 14:14:14,181 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-23 14:14:14,181 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 14:14:14,181 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 14:14:14,181 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 14:14:14,182 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-23 14:14:14,182 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-23 14:14:14,194 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-23 14:14:14,208 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2022-07-23 14:14:14,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:14:14,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:14:14,209 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:14:14,210 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2022-07-23 14:14:14,212 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-23 14:14:14,217 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 14:14:14,217 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-23 14:14:14,217 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 14:14:14,218 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 14:14:14,218 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 14:14:14,219 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-23 14:14:14,219 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-23 14:14:14,230 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-23 14:14:14,245 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2022-07-23 14:14:14,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:14:14,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:14:14,246 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:14:14,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2022-07-23 14:14:14,248 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-23 14:14:14,253 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 14:14:14,254 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-23 14:14:14,254 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 14:14:14,254 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 14:14:14,254 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 14:14:14,254 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-23 14:14:14,254 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-23 14:14:14,262 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-23 14:14:14,279 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2022-07-23 14:14:14,279 INFO L490 LassoAnalysis]: Using template '2-nested'. [2022-07-23 14:14:14,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:14:14,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:14:14,280 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:14:14,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2022-07-23 14:14:14,281 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-23 14:14:14,287 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 14:14:14,287 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-23 14:14:14,288 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 14:14:14,288 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 14:14:14,288 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2022-07-23 14:14:14,288 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2022-07-23 14:14:14,288 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-23 14:14:14,289 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-23 14:14:14,304 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2022-07-23 14:14:14,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:14:14,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:14:14,306 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:14:14,306 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2022-07-23 14:14:14,308 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-23 14:14:14,314 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 14:14:14,314 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-23 14:14:14,314 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 14:14:14,314 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 14:14:14,314 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2022-07-23 14:14:14,315 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2022-07-23 14:14:14,315 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-23 14:14:14,330 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-23 14:14:14,347 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Ended with exit code 0 [2022-07-23 14:14:14,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:14:14,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:14:14,348 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:14:14,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2022-07-23 14:14:14,352 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-23 14:14:14,357 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 14:14:14,357 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-23 14:14:14,357 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 14:14:14,357 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 14:14:14,358 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2022-07-23 14:14:14,358 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2022-07-23 14:14:14,358 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-23 14:14:14,363 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-23 14:14:14,378 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Ended with exit code 0 [2022-07-23 14:14:14,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:14:14,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:14:14,379 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:14:14,382 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-23 14:14:14,384 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2022-07-23 14:14:14,388 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 14:14:14,388 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-23 14:14:14,388 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 14:14:14,388 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 14:14:14,388 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2022-07-23 14:14:14,389 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2022-07-23 14:14:14,389 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-23 14:14:14,395 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-23 14:14:14,410 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2022-07-23 14:14:14,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:14:14,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:14:14,411 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:14:14,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2022-07-23 14:14:14,413 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-23 14:14:14,419 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 14:14:14,419 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-23 14:14:14,419 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 14:14:14,419 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 14:14:14,419 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2022-07-23 14:14:14,420 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2022-07-23 14:14:14,420 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-23 14:14:14,431 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-23 14:14:14,445 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Ended with exit code 0 [2022-07-23 14:14:14,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:14:14,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:14:14,447 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:14:14,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2022-07-23 14:14:14,449 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-23 14:14:14,455 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 14:14:14,455 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-23 14:14:14,455 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 14:14:14,455 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 14:14:14,455 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2022-07-23 14:14:14,456 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2022-07-23 14:14:14,456 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-23 14:14:14,471 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-23 14:14:14,488 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2022-07-23 14:14:14,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:14:14,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:14:14,490 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:14:14,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2022-07-23 14:14:14,492 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-23 14:14:14,498 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 14:14:14,498 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-23 14:14:14,499 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 14:14:14,499 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 14:14:14,499 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2022-07-23 14:14:14,500 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2022-07-23 14:14:14,500 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-23 14:14:14,516 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-23 14:14:14,524 INFO L443 ModelExtractionUtils]: Simplification made 6 calls to the SMT solver. [2022-07-23 14:14:14,524 INFO L444 ModelExtractionUtils]: 1 out of 7 variables were initially zero. Simplification set additionally 2 variables to zero. [2022-07-23 14:14:14,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:14:14,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:14:14,528 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:14:14,529 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2022-07-23 14:14:14,530 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-23 14:14:14,530 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-23 14:14:14,530 INFO L513 LassoAnalysis]: Proved termination. [2022-07-23 14:14:14,531 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function 2-nested ranking function: f0 = 1*p_#in~n + 1*p_#in~r f1 = 1*p_#in~r Supporting invariants [] [2022-07-23 14:14:14,563 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2022-07-23 14:14:14,566 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-23 14:14:14,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:14:14,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:14:14,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-23 14:14:14,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:14:14,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:14:14,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-23 14:14:14,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:14:14,775 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2022-07-23 14:14:14,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 14:14:14,816 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2022-07-23 14:14:14,817 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 18 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:14:14,950 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 18 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3). Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 48 states and 60 transitions. Complement of second has 12 states. [2022-07-23 14:14:14,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-07-23 14:14:14,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:14:14,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2022-07-23 14:14:14,957 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 4 letters. Loop has 3 letters. [2022-07-23 14:14:14,959 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:14:14,959 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 7 letters. Loop has 3 letters. [2022-07-23 14:14:14,959 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:14:14,959 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 4 letters. Loop has 6 letters. [2022-07-23 14:14:14,959 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:14:14,960 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 48 states and 60 transitions. [2022-07-23 14:14:14,966 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-07-23 14:14:14,969 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 48 states to 21 states and 24 transitions. [2022-07-23 14:14:14,969 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2022-07-23 14:14:14,970 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2022-07-23 14:14:14,970 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 24 transitions. [2022-07-23 14:14:14,970 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-23 14:14:14,970 INFO L369 hiAutomatonCegarLoop]: Abstraction has 21 states and 24 transitions. [2022-07-23 14:14:14,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 24 transitions. [2022-07-23 14:14:14,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 14. [2022-07-23 14:14:14,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 4 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) [2022-07-23 14:14:14,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2022-07-23 14:14:14,986 INFO L392 hiAutomatonCegarLoop]: Abstraction has 14 states and 17 transitions. [2022-07-23 14:14:14,986 INFO L374 stractBuchiCegarLoop]: Abstraction has 14 states and 17 transitions. [2022-07-23 14:14:14,986 INFO L287 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-07-23 14:14:14,986 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 17 transitions. [2022-07-23 14:14:14,987 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-07-23 14:14:14,987 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-23 14:14:14,987 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-23 14:14:14,987 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2022-07-23 14:14:14,987 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-07-23 14:14:14,987 INFO L752 eck$LassoCheckResult]: Stem: 133#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 134#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet2#1, main_#t~nondet3#1, main_#t~nondet4#1, main_#t~ret5#1, main_~m~0#1, main_~n~0#1, main_~r~0#1;main_~m~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~n~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1;main_~r~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 135#L28 assume (main_~m~0#1 >= 0 && main_~n~0#1 >= 0) && main_~r~0#1 >= 0; 126#L29 call main_#t~ret5#1 := p(main_~m~0#1, main_~n~0#1, main_~r~0#1);< 136#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 125#L13 assume !(~r > 0); 127#L16 [2022-07-23 14:14:14,987 INFO L754 eck$LassoCheckResult]: Loop: 127#L16 assume ~n > 0; 131#L17 call #t~ret1 := p(~r, ~n - 1, ~m);< 132#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 138#L13 assume !(~r > 0); 127#L16 [2022-07-23 14:14:14,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:14:14,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1303685879, now seen corresponding path program 1 times [2022-07-23 14:14:14,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:14:14,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551843715] [2022-07-23 14:14:14,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:14:14,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:14:15,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:14:15,005 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:14:15,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:14:15,008 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:14:15,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:14:15,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1221437, now seen corresponding path program 1 times [2022-07-23 14:14:15,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:14:15,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770487176] [2022-07-23 14:14:15,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:14:15,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:14:15,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:14:15,011 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:14:15,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:14:15,014 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:14:15,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:14:15,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1125326029, now seen corresponding path program 1 times [2022-07-23 14:14:15,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:14:15,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116633005] [2022-07-23 14:14:15,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:14:15,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:14:15,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:14:15,018 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:14:15,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:14:15,022 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:14:15,088 INFO L210 LassoAnalysis]: Preferences: [2022-07-23 14:14:15,089 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-23 14:14:15,089 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-23 14:14:15,089 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-23 14:14:15,089 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-23 14:14:15,089 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:14:15,089 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-23 14:14:15,089 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-23 14:14:15,089 INFO L133 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4.c_Iteration2_Loop [2022-07-23 14:14:15,089 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-23 14:14:15,089 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-23 14:14:15,090 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:14:15,091 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:14:15,093 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:14:15,094 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:14:15,100 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:14:15,144 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-23 14:14:15,144 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-23 14:14:15,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:14:15,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:14:15,145 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:14:15,146 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2022-07-23 14:14:15,148 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 14:14:15,148 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:14:15,155 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-23 14:14:15,155 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_#res=0} Honda state: {p_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-23 14:14:15,170 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Ended with exit code 0 [2022-07-23 14:14:15,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:14:15,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:14:15,171 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:14:15,171 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2022-07-23 14:14:15,172 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 14:14:15,173 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:14:15,187 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-23 14:14:15,187 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_#t~ret0=0} Honda state: {p_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-23 14:14:15,202 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Ended with exit code 0 [2022-07-23 14:14:15,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:14:15,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:14:15,204 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:14:15,205 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2022-07-23 14:14:15,205 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 14:14:15,205 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:14:15,211 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-23 14:14:15,212 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_#t~ret1=0} Honda state: {p_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-23 14:14:15,226 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Ended with exit code 0 [2022-07-23 14:14:15,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:14:15,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:14:15,228 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:14:15,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2022-07-23 14:14:15,230 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 14:14:15,230 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:14:15,247 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-23 14:14:15,247 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_#in~m=-6, p_~m=-6, p_~r=-6, p_#in~r=-6} Honda state: {p_#in~m=-6, p_~m=-6, p_~r=-6, p_#in~r=-6} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-23 14:14:15,267 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2022-07-23 14:14:15,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:14:15,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:14:15,268 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:14:15,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2022-07-23 14:14:15,270 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 14:14:15,270 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:14:15,296 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Ended with exit code 0 [2022-07-23 14:14:15,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:14:15,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:14:15,298 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:14:15,300 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2022-07-23 14:14:15,301 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-23 14:14:15,301 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:14:15,681 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-23 14:14:15,685 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Ended with exit code 0 [2022-07-23 14:14:15,685 INFO L210 LassoAnalysis]: Preferences: [2022-07-23 14:14:15,685 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-23 14:14:15,685 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-23 14:14:15,685 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-23 14:14:15,685 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-23 14:14:15,685 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:14:15,685 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-23 14:14:15,685 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-23 14:14:15,685 INFO L133 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4.c_Iteration2_Loop [2022-07-23 14:14:15,685 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-23 14:14:15,685 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-23 14:14:15,686 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:14:15,697 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:14:15,699 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:14:15,708 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:14:15,709 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:14:15,757 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-23 14:14:15,758 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-23 14:14:15,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:14:15,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:14:15,759 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:14:15,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2022-07-23 14:14:15,761 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-23 14:14:15,767 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 14:14:15,767 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-23 14:14:15,767 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 14:14:15,767 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 14:14:15,767 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 14:14:15,768 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-23 14:14:15,768 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-23 14:14:15,787 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-23 14:14:15,802 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2022-07-23 14:14:15,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:14:15,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:14:15,804 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:14:15,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2022-07-23 14:14:15,806 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-23 14:14:15,812 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 14:14:15,812 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-23 14:14:15,813 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 14:14:15,813 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 14:14:15,813 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 14:14:15,814 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-23 14:14:15,814 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-23 14:14:15,828 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-23 14:14:15,846 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2022-07-23 14:14:15,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:14:15,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:14:15,847 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:14:15,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2022-07-23 14:14:15,849 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-23 14:14:15,856 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 14:14:15,856 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-23 14:14:15,856 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 14:14:15,856 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 14:14:15,856 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 14:14:15,858 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-23 14:14:15,858 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-23 14:14:15,873 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-23 14:14:15,891 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2022-07-23 14:14:15,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:14:15,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:14:15,893 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:14:15,894 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2022-07-23 14:14:15,895 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-23 14:14:15,901 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 14:14:15,901 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-23 14:14:15,901 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 14:14:15,901 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 14:14:15,901 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 14:14:15,902 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-23 14:14:15,902 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-23 14:14:15,917 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-23 14:14:15,934 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2022-07-23 14:14:15,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:14:15,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:14:15,935 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:14:15,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2022-07-23 14:14:15,937 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-23 14:14:15,943 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 14:14:15,943 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-23 14:14:15,943 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 14:14:15,943 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 14:14:15,943 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 14:14:15,944 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-23 14:14:15,944 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-23 14:14:15,959 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-23 14:14:15,961 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2022-07-23 14:14:15,961 INFO L444 ModelExtractionUtils]: 2 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-07-23 14:14:15,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:14:15,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:14:15,976 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:14:15,977 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2022-07-23 14:14:15,977 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-23 14:14:15,977 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-23 14:14:15,977 INFO L513 LassoAnalysis]: Proved termination. [2022-07-23 14:14:15,977 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(p_~n) = 1*p_~n Supporting invariants [] [2022-07-23 14:14:15,993 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Ended with exit code 0 [2022-07-23 14:14:15,993 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-23 14:14:16,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:14:16,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:14:16,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-23 14:14:16,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:14:16,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:14:16,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-23 14:14:16,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:14:16,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 14:14:16,077 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2022-07-23 14:14:16,078 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 14 states and 17 transitions. cyclomatic complexity: 5 Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:14:16,090 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 14 states and 17 transitions. cyclomatic complexity: 5. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 26 states and 31 transitions. Complement of second has 13 states. [2022-07-23 14:14:16,090 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 [2022-07-23 14:14:16,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:14:16,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 14 transitions. [2022-07-23 14:14:16,091 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 6 letters. Loop has 4 letters. [2022-07-23 14:14:16,105 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:14:16,106 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 10 letters. Loop has 4 letters. [2022-07-23 14:14:16,108 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:14:16,108 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 6 letters. Loop has 8 letters. [2022-07-23 14:14:16,109 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:14:16,109 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 26 states and 31 transitions. [2022-07-23 14:14:16,110 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-07-23 14:14:16,110 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 26 states to 21 states and 25 transitions. [2022-07-23 14:14:16,110 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2022-07-23 14:14:16,110 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2022-07-23 14:14:16,110 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 25 transitions. [2022-07-23 14:14:16,110 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-23 14:14:16,110 INFO L369 hiAutomatonCegarLoop]: Abstraction has 21 states and 25 transitions. [2022-07-23 14:14:16,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 25 transitions. [2022-07-23 14:14:16,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2022-07-23 14:14:16,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 5 states have call successors, (5), 4 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:14:16,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2022-07-23 14:14:16,112 INFO L392 hiAutomatonCegarLoop]: Abstraction has 19 states and 23 transitions. [2022-07-23 14:14:16,112 INFO L374 stractBuchiCegarLoop]: Abstraction has 19 states and 23 transitions. [2022-07-23 14:14:16,112 INFO L287 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-07-23 14:14:16,112 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 19 states and 23 transitions. [2022-07-23 14:14:16,112 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-07-23 14:14:16,112 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-23 14:14:16,112 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-23 14:14:16,112 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 14:14:16,112 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-07-23 14:14:16,113 INFO L752 eck$LassoCheckResult]: Stem: 239#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 240#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet2#1, main_#t~nondet3#1, main_#t~nondet4#1, main_#t~ret5#1, main_~m~0#1, main_~n~0#1, main_~r~0#1;main_~m~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~n~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1;main_~r~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 241#L28 assume (main_~m~0#1 >= 0 && main_~n~0#1 >= 0) && main_~r~0#1 >= 0; 230#L29 call main_#t~ret5#1 := p(main_~m~0#1, main_~n~0#1, main_~r~0#1);< 242#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 228#L13 assume !(~r > 0); 231#L16 assume ~n > 0; 233#L17 call #t~ret1 := p(~r, ~n - 1, ~m);< 238#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 244#L13 assume ~r > 0; 236#L14 [2022-07-23 14:14:16,113 INFO L754 eck$LassoCheckResult]: Loop: 236#L14 call #t~ret0 := p(~m, ~r - 1, ~n);< 237#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 246#L13 assume ~r > 0; 236#L14 [2022-07-23 14:14:16,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:14:16,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1125326032, now seen corresponding path program 1 times [2022-07-23 14:14:16,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:14:16,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541355411] [2022-07-23 14:14:16,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:14:16,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:14:16,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:14:16,118 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:14:16,120 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Forceful destruction successful, exit code 0 [2022-07-23 14:14:16,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:14:16,125 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:14:16,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:14:16,125 INFO L85 PathProgramCache]: Analyzing trace with hash 57663, now seen corresponding path program 2 times [2022-07-23 14:14:16,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:14:16,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659454626] [2022-07-23 14:14:16,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:14:16,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:14:16,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:14:16,137 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:14:16,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:14:16,139 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:14:16,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:14:16,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1926921136, now seen corresponding path program 1 times [2022-07-23 14:14:16,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:14:16,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288861423] [2022-07-23 14:14:16,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:14:16,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:14:16,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:14:16,145 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:14:16,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:14:16,154 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:14:16,223 INFO L210 LassoAnalysis]: Preferences: [2022-07-23 14:14:16,223 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-23 14:14:16,224 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-23 14:14:16,224 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-23 14:14:16,224 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-23 14:14:16,224 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:14:16,224 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-23 14:14:16,224 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-23 14:14:16,224 INFO L133 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4.c_Iteration3_Loop [2022-07-23 14:14:16,224 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-23 14:14:16,224 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-23 14:14:16,225 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:14:16,231 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:14:16,232 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:14:16,236 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:14:16,237 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:14:16,279 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-23 14:14:16,279 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-23 14:14:16,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:14:16,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:14:16,282 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:14:16,283 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2022-07-23 14:14:16,284 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 14:14:16,284 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:14:16,316 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2022-07-23 14:14:16,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:14:16,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:14:16,318 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:14:16,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2022-07-23 14:14:16,321 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-23 14:14:16,321 INFO L160 nArgumentSynthesizer]: Using integer mode.