./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 678e0110 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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 554582d6fc3de8e87f5dd30e5019302b6e1b96be ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-678e011 [2019-11-19 22:20:22,660 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-19 22:20:22,663 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-19 22:20:22,675 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-19 22:20:22,675 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-19 22:20:22,676 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-19 22:20:22,678 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-19 22:20:22,680 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-19 22:20:22,681 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-19 22:20:22,682 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-19 22:20:22,683 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-19 22:20:22,685 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-19 22:20:22,685 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-19 22:20:22,686 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-19 22:20:22,687 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-19 22:20:22,688 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-19 22:20:22,689 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-19 22:20:22,690 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-19 22:20:22,692 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-19 22:20:22,694 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-19 22:20:22,696 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-19 22:20:22,697 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-19 22:20:22,698 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-19 22:20:22,699 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-19 22:20:22,701 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-19 22:20:22,702 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-19 22:20:22,702 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-19 22:20:22,703 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-19 22:20:22,703 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-19 22:20:22,705 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-19 22:20:22,705 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-19 22:20:22,706 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-19 22:20:22,707 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-19 22:20:22,707 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-19 22:20:22,708 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-19 22:20:22,709 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-19 22:20:22,710 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-19 22:20:22,710 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-19 22:20:22,710 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-19 22:20:22,711 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-19 22:20:22,712 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-19 22:20:22,713 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-11-19 22:20:22,729 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-19 22:20:22,729 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-19 22:20:22,731 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-19 22:20:22,731 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-19 22:20:22,731 INFO L138 SettingsManager]: * Use SBE=true [2019-11-19 22:20:22,731 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-19 22:20:22,732 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-19 22:20:22,732 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-19 22:20:22,732 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-19 22:20:22,733 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-19 22:20:22,733 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-19 22:20:22,733 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-19 22:20:22,734 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-19 22:20:22,734 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-19 22:20:22,734 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-19 22:20:22,734 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-19 22:20:22,735 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-19 22:20:22,735 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-19 22:20:22,735 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-19 22:20:22,735 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-19 22:20:22,736 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-19 22:20:22,736 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-19 22:20:22,736 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-19 22:20:22,737 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-19 22:20:22,737 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-19 22:20:22,737 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-19 22:20:22,737 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-19 22:20:22,738 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-19 22:20:22,739 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-19 22:20:22,739 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR 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 -> 554582d6fc3de8e87f5dd30e5019302b6e1b96be [2019-11-19 22:20:23,031 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-19 22:20:23,051 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-19 22:20:23,054 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-19 22:20:23,056 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-19 22:20:23,056 INFO L275 PluginConnector]: CDTParser initialized [2019-11-19 22:20:23,058 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex4.c [2019-11-19 22:20:23,133 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a216b06e/7950cf5bd7584c799619d8028291552c/FLAG2d58d0469 [2019-11-19 22:20:23,620 INFO L306 CDTParser]: Found 1 translation units. [2019-11-19 22:20:23,620 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex4.c [2019-11-19 22:20:23,627 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a216b06e/7950cf5bd7584c799619d8028291552c/FLAG2d58d0469 [2019-11-19 22:20:24,024 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a216b06e/7950cf5bd7584c799619d8028291552c [2019-11-19 22:20:24,027 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-19 22:20:24,029 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-19 22:20:24,031 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-19 22:20:24,031 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-19 22:20:24,035 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-19 22:20:24,036 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 10:20:24" (1/1) ... [2019-11-19 22:20:24,039 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b0f437b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:20:24, skipping insertion in model container [2019-11-19 22:20:24,040 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 10:20:24" (1/1) ... [2019-11-19 22:20:24,048 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-19 22:20:24,066 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-19 22:20:24,308 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 22:20:24,313 INFO L188 MainTranslator]: Completed pre-run [2019-11-19 22:20:24,330 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 22:20:24,345 INFO L192 MainTranslator]: Completed translation [2019-11-19 22:20:24,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:20:24 WrapperNode [2019-11-19 22:20:24,346 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-19 22:20:24,347 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-19 22:20:24,347 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-19 22:20:24,348 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-19 22:20:24,357 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:20:24" (1/1) ... [2019-11-19 22:20:24,363 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:20:24" (1/1) ... [2019-11-19 22:20:24,445 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-19 22:20:24,446 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-19 22:20:24,446 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-19 22:20:24,446 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-19 22:20:24,456 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:20:24" (1/1) ... [2019-11-19 22:20:24,456 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:20:24" (1/1) ... [2019-11-19 22:20:24,457 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:20:24" (1/1) ... [2019-11-19 22:20:24,458 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:20:24" (1/1) ... [2019-11-19 22:20:24,460 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:20:24" (1/1) ... [2019-11-19 22:20:24,463 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:20:24" (1/1) ... [2019-11-19 22:20:24,464 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:20:24" (1/1) ... [2019-11-19 22:20:24,466 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-19 22:20:24,466 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-19 22:20:24,467 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-19 22:20:24,467 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-19 22:20:24,468 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:20:24" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:20:24,530 INFO L130 BoogieDeclarations]: Found specification of procedure p [2019-11-19 22:20:24,530 INFO L138 BoogieDeclarations]: Found implementation of procedure p [2019-11-19 22:20:24,530 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-19 22:20:24,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-19 22:20:24,716 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-19 22:20:24,717 INFO L285 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-19 22:20:24,718 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 10:20:24 BoogieIcfgContainer [2019-11-19 22:20:24,719 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-19 22:20:24,720 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-19 22:20:24,720 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-19 22:20:24,724 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-19 22:20:24,726 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-19 22:20:24,726 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 19.11 10:20:24" (1/3) ... [2019-11-19 22:20:24,738 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5274f868 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.11 10:20:24, skipping insertion in model container [2019-11-19 22:20:24,739 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-19 22:20:24,739 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:20:24" (2/3) ... [2019-11-19 22:20:24,740 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5274f868 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.11 10:20:24, skipping insertion in model container [2019-11-19 22:20:24,741 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-19 22:20:24,741 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 10:20:24" (3/3) ... [2019-11-19 22:20:24,744 INFO L371 chiAutomizerObserver]: Analyzing ICFG LeeJonesBen-Amram-POPL2001-Ex4.c [2019-11-19 22:20:24,845 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-19 22:20:24,845 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-19 22:20:24,845 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-19 22:20:24,846 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-19 22:20:24,846 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-19 22:20:24,846 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-19 22:20:24,847 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-19 22:20:24,847 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-19 22:20:24,863 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states. [2019-11-19 22:20:24,893 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-11-19 22:20:24,894 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-19 22:20:24,894 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-19 22:20:24,903 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-11-19 22:20:24,904 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-19 22:20:24,904 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-19 22:20:24,904 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states. [2019-11-19 22:20:24,907 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-11-19 22:20:24,907 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-19 22:20:24,907 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-19 22:20:24,908 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-11-19 22:20:24,908 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-19 22:20:24,917 INFO L794 eck$LassoCheckResult]: Stem: 15#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~ret5, main_~m~0, main_~n~0, main_~r~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~r~0 := main_#t~nondet4;havoc main_#t~nondet4; 7#L28true assume (main_~m~0 >= 0 && main_~n~0 >= 0) && main_~r~0 >= 0; 10#L29true call main_#t~ret5 := p(main_~m~0, main_~n~0, main_~r~0);< 11#pENTRYtrue [2019-11-19 22:20:24,918 INFO L796 eck$LassoCheckResult]: Loop: 11#pENTRYtrue ~m := #in~m;~n := #in~n;~r := #in~r; 12#L13true assume ~r > 0; 9#L14true call #t~ret0 := p(~m, ~r - 1, ~n);< 11#pENTRYtrue [2019-11-19 22:20:24,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:20:24,926 INFO L82 PathProgramCache]: Analyzing trace with hash 44796, now seen corresponding path program 1 times [2019-11-19 22:20:24,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:20:24,936 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005191366] [2019-11-19 22:20:24,937 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:20:25,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:20:25,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:20:25,051 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 22:20:25,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:20:25,053 INFO L82 PathProgramCache]: Analyzing trace with hash 29912, now seen corresponding path program 1 times [2019-11-19 22:20:25,053 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:20:25,053 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399728508] [2019-11-19 22:20:25,054 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:20:25,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:20:25,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:20:25,068 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 22:20:25,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:20:25,070 INFO L82 PathProgramCache]: Analyzing trace with hash 1334517757, now seen corresponding path program 1 times [2019-11-19 22:20:25,070 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:20:25,071 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095388286] [2019-11-19 22:20:25,071 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:20:25,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:20:25,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:20:25,099 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 22:20:25,262 INFO L210 LassoAnalysis]: Preferences: [2019-11-19 22:20:25,263 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-19 22:20:25,264 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-19 22:20:25,264 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-19 22:20:25,264 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-19 22:20:25,265 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:20:25,265 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-19 22:20:25,265 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-19 22:20:25,265 INFO L133 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4.c_Iteration1_Loop [2019-11-19 22:20:25,266 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-19 22:20:25,266 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-19 22:20:25,288 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:20:25,297 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:20:25,301 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:20:25,305 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:20:25,310 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:20:25,313 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:20:25,316 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:20:25,328 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:20:25,423 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-19 22:20:25,424 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:20:25,443 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 22:20:25,443 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-19 22:20:25,453 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-19 22:20:25,454 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_#res=0} Honda state: {p_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 22:20:25,474 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 22:20:25,475 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:20:25,481 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-19 22:20:25,481 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_#t~ret0=0} Honda state: {p_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 22:20:25,502 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 22:20:25,502 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:20:25,509 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-19 22:20:25,509 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_#t~ret1=0} Honda state: {p_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 22:20:25,527 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 22:20:25,528 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:20:25,534 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-19 22:20:25,534 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_#in~m=0} Honda state: {p_#in~m=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 22:20:25,552 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 22:20:25,552 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:20:25,561 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-19 22:20:25,561 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_~n=0} Honda state: {p_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 22:20:25,580 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 22:20:25,581 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:20:25,586 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-19 22:20:25,587 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_~m=0} Honda state: {p_~m=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 22:20:25,601 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 22:20:25,601 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 22:20:25,636 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-19 22:20:25,636 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:20:27,891 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-19 22:20:27,893 INFO L210 LassoAnalysis]: Preferences: [2019-11-19 22:20:27,894 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-19 22:20:27,894 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-19 22:20:27,894 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-19 22:20:27,894 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-19 22:20:27,894 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:20:27,894 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-19 22:20:27,894 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-19 22:20:27,894 INFO L133 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4.c_Iteration1_Loop [2019-11-19 22:20:27,895 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-19 22:20:27,895 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-19 22:20:27,897 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:20:27,904 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:20:27,908 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:20:27,912 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:20:27,916 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:20:27,922 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:20:27,926 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:20:27,939 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:20:28,017 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-19 22:20:28,023 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 22:20:28,035 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-19 22:20:28,038 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 22:20:28,038 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 22:20:28,039 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 22:20:28,040 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 22:20:28,040 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 22:20:28,043 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 22:20:28,043 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:20:28,048 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 22:20:28,060 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-19 22:20:28,062 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 22:20:28,063 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 22:20:28,063 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 22:20:28,063 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 22:20:28,063 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 22:20:28,065 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 22:20:28,065 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:20:28,068 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 22:20:28,091 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-19 22:20:28,093 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 22:20:28,094 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 22:20:28,094 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 22:20:28,094 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 22:20:28,094 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 22:20:28,098 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 22:20:28,098 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:20:28,105 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 22:20:28,124 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-19 22:20:28,127 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 22:20:28,127 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 22:20:28,128 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 22:20:28,128 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 22:20:28,128 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 22:20:28,131 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 22:20:28,131 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-19 22:20:28,133 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 22:20:28,146 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-19 22:20:28,149 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 22:20:28,149 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 22:20:28,149 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 22:20:28,149 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 22:20:28,150 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 22:20:28,152 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 22:20:28,152 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:20:28,155 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 22:20:28,174 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-19 22:20:28,177 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 22:20:28,177 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 22:20:28,177 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 22:20:28,177 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 22:20:28,177 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 22:20:28,181 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 22:20:28,182 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:20:28,185 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 22:20:28,201 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-19 22:20:28,204 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 22:20:28,204 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 22:20:28,205 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 22:20:28,205 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 22:20:28,205 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:20:28,211 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 22:20:28,212 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-19 22:20:28,217 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 22:20:28,230 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-19 22:20:28,234 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 22:20:28,235 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 22:20:28,235 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 22:20:28,235 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 22:20:28,235 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 22:20:28,240 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 22:20:28,240 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:20:28,243 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-19 22:20:28,246 INFO L489 LassoAnalysis]: Using template '2-nested'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 22:20:28,259 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-19 22:20:28,262 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 22:20:28,262 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 22:20:28,262 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 22:20:28,262 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 22:20:28,263 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2019-11-19 22:20:28,264 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2019-11-19 22:20:28,264 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:20:28,267 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 22:20:28,284 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-19 22:20:28,287 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 22:20:28,287 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 22:20:28,288 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 22:20:28,288 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 22:20:28,288 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2019-11-19 22:20:28,291 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2019-11-19 22:20:28,291 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:20:28,299 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 22:20:28,317 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-19 22:20:28,320 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 22:20:28,320 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 22:20:28,320 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 22:20:28,321 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 22:20:28,321 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2019-11-19 22:20:28,323 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2019-11-19 22:20:28,323 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:20:28,328 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:20:28,342 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-19 22:20:28,345 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 22:20:28,345 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 22:20:28,346 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 22:20:28,346 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 22:20:28,346 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2019-11-19 22:20:28,351 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2019-11-19 22:20:28,352 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-19 22:20:28,355 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:20:28,366 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-19 22:20:28,368 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 22:20:28,368 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 22:20:28,369 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 22:20:28,369 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 22:20:28,369 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2019-11-19 22:20:28,371 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2019-11-19 22:20:28,371 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-19 22:20:28,375 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 22:20:28,382 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-19 22:20:28,384 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 22:20:28,384 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 22:20:28,384 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 22:20:28,385 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 22:20:28,385 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:20:28,386 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2019-11-19 22:20:28,386 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-19 22:20:28,389 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:20:28,401 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-19 22:20:28,403 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 22:20:28,403 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 22:20:28,403 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 22:20:28,403 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 22:20:28,404 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2019-11-19 22:20:28,408 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2019-11-19 22:20:28,409 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-19 22:20:28,424 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-19 22:20:28,451 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2019-11-19 22:20:28,451 INFO L444 ModelExtractionUtils]: 2 out of 7 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 22:20:28,460 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-19 22:20:28,460 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-19 22:20:28,460 INFO L510 LassoAnalysis]: Proved termination. [2019-11-19 22:20:28,461 INFO L512 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 [] [2019-11-19 22:20:28,477 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:20:28,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:20:28,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:20:28,544 INFO L255 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-19 22:20:28,546 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:20:28,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:20:28,570 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-19 22:20:28,572 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:20:28,580 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 22:20:28,582 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 22:20:28,588 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 22:20:28,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:20:28,671 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 [2019-11-19 22:20:28,673 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states. Second operand 4 states. [2019-11-19 22:20:28,928 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states.. Second operand 4 states. Result 47 states and 59 transitions. Complement of second has 12 states. [2019-11-19 22:20:28,929 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-19 22:20:28,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-19 22:20:28,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2019-11-19 22:20:28,935 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 3 letters. Loop has 3 letters. [2019-11-19 22:20:28,937 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 22:20:28,938 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 6 letters. Loop has 3 letters. [2019-11-19 22:20:28,938 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 22:20:28,939 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 3 letters. Loop has 6 letters. [2019-11-19 22:20:28,939 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 22:20:28,940 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 47 states and 59 transitions. [2019-11-19 22:20:28,947 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-11-19 22:20:28,953 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 47 states to 20 states and 23 transitions. [2019-11-19 22:20:28,954 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2019-11-19 22:20:28,955 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2019-11-19 22:20:28,956 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 23 transitions. [2019-11-19 22:20:28,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-19 22:20:28,957 INFO L688 BuchiCegarLoop]: Abstraction has 20 states and 23 transitions. [2019-11-19 22:20:28,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states and 23 transitions. [2019-11-19 22:20:28,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 13. [2019-11-19 22:20:28,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-11-19 22:20:28,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2019-11-19 22:20:28,988 INFO L711 BuchiCegarLoop]: Abstraction has 13 states and 16 transitions. [2019-11-19 22:20:28,988 INFO L591 BuchiCegarLoop]: Abstraction has 13 states and 16 transitions. [2019-11-19 22:20:28,989 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-19 22:20:28,990 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 16 transitions. [2019-11-19 22:20:28,992 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-11-19 22:20:28,992 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-19 22:20:28,993 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-19 22:20:28,993 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2019-11-19 22:20:28,993 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-11-19 22:20:28,993 INFO L794 eck$LassoCheckResult]: Stem: 126#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~ret5, main_~m~0, main_~n~0, main_~r~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~r~0 := main_#t~nondet4;havoc main_#t~nondet4; 127#L28 assume (main_~m~0 >= 0 && main_~n~0 >= 0) && main_~r~0 >= 0; 123#L29 call main_#t~ret5 := p(main_~m~0, main_~n~0, main_~r~0);< 129#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 131#L13 assume !(~r > 0); 125#L16 [2019-11-19 22:20:28,994 INFO L796 eck$LassoCheckResult]: Loop: 125#L16 assume ~n > 0; 120#L17 call #t~ret1 := p(~r, ~n - 1, ~m);< 122#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 132#L13 assume !(~r > 0); 125#L16 [2019-11-19 22:20:28,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:20:28,994 INFO L82 PathProgramCache]: Analyzing trace with hash 43048962, now seen corresponding path program 1 times [2019-11-19 22:20:28,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:20:28,995 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958034835] [2019-11-19 22:20:28,995 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:20:29,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:20:29,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:20:29,020 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 22:20:29,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:20:29,021 INFO L82 PathProgramCache]: Analyzing trace with hash 1220476, now seen corresponding path program 1 times [2019-11-19 22:20:29,021 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:20:29,022 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367347432] [2019-11-19 22:20:29,022 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:20:29,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:20:29,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:20:29,032 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 22:20:29,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:20:29,033 INFO L82 PathProgramCache]: Analyzing trace with hash -1891526915, now seen corresponding path program 1 times [2019-11-19 22:20:29,033 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:20:29,034 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384711677] [2019-11-19 22:20:29,034 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:20:29,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:20:29,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:20:29,055 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 22:20:29,171 INFO L210 LassoAnalysis]: Preferences: [2019-11-19 22:20:29,171 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-19 22:20:29,171 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-19 22:20:29,171 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-19 22:20:29,171 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-19 22:20:29,172 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:20:29,172 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-19 22:20:29,172 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-19 22:20:29,172 INFO L133 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4.c_Iteration2_Loop [2019-11-19 22:20:29,173 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-19 22:20:29,173 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-19 22:20:29,175 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:20:29,178 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:20:29,181 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:20:29,184 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:20:29,193 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:20:29,290 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-19 22:20:29,290 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 22:20:29,299 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 22:20:29,299 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:20:29,306 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-19 22:20:29,307 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_#res=0} Honda state: {p_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 22:20:29,315 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 22:20:29,315 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:20:29,320 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-19 22:20:29,320 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_#t~ret0=0} Honda state: {p_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 22:20:29,332 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 22:20:29,332 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:20:29,337 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-19 22:20:29,338 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_#t~ret1=0} Honda state: {p_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 22:20:29,345 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 22:20:29,346 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 22:20:29,363 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-19 22:20:29,363 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:20:30,131 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-19 22:20:30,133 INFO L210 LassoAnalysis]: Preferences: [2019-11-19 22:20:30,133 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-19 22:20:30,133 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-19 22:20:30,134 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-19 22:20:30,134 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-19 22:20:30,134 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:20:30,134 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-19 22:20:30,134 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-19 22:20:30,134 INFO L133 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4.c_Iteration2_Loop [2019-11-19 22:20:30,134 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-19 22:20:30,135 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-19 22:20:30,137 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:20:30,139 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:20:30,141 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:20:30,157 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:20:30,160 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:20:30,273 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-19 22:20:30,274 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 22:20:30,284 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-19 22:20:30,286 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 22:20:30,286 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 22:20:30,286 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 22:20:30,286 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 22:20:30,287 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 22:20:30,290 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 22:20:30,290 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:20:30,292 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 22:20:30,305 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-19 22:20:30,307 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 22:20:30,307 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 22:20:30,307 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 22:20:30,307 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 22:20:30,307 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 22:20:30,309 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 22:20:30,309 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:20:30,311 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 22:20:30,318 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:20:30,321 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 22:20:30,321 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 22:20:30,322 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 22:20:30,322 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 22:20:30,322 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 22:20:30,323 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 22:20:30,323 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-19 22:20:30,326 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-19 22:20:30,333 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-19 22:20:30,333 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 22:20:30,339 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-19 22:20:30,339 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-19 22:20:30,340 INFO L510 LassoAnalysis]: Proved termination. [2019-11-19 22:20:30,340 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(p_~n) = 1*p_~n Supporting invariants [] [2019-11-19 22:20:30,343 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:20:30,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:20:30,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:20:30,398 INFO L255 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-19 22:20:30,399 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:20:30,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:20:30,417 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-19 22:20:30,418 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:20:30,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:20:30,454 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 [2019-11-19 22:20:30,454 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 16 transitions. cyclomatic complexity: 5 Second operand 5 states. [2019-11-19 22:20:30,475 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 16 transitions. cyclomatic complexity: 5. Second operand 5 states. Result 25 states and 30 transitions. Complement of second has 13 states. [2019-11-19 22:20:30,476 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2019-11-19 22:20:30,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-11-19 22:20:30,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 13 transitions. [2019-11-19 22:20:30,477 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 5 letters. Loop has 4 letters. [2019-11-19 22:20:30,478 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 22:20:30,478 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 9 letters. Loop has 4 letters. [2019-11-19 22:20:30,478 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 22:20:30,478 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 5 letters. Loop has 8 letters. [2019-11-19 22:20:30,479 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 22:20:30,479 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 30 transitions. [2019-11-19 22:20:30,480 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-11-19 22:20:30,482 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 20 states and 24 transitions. [2019-11-19 22:20:30,482 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2019-11-19 22:20:30,482 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2019-11-19 22:20:30,482 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 24 transitions. [2019-11-19 22:20:30,483 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-19 22:20:30,483 INFO L688 BuchiCegarLoop]: Abstraction has 20 states and 24 transitions. [2019-11-19 22:20:30,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states and 24 transitions. [2019-11-19 22:20:30,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2019-11-19 22:20:30,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-19 22:20:30,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2019-11-19 22:20:30,486 INFO L711 BuchiCegarLoop]: Abstraction has 18 states and 22 transitions. [2019-11-19 22:20:30,486 INFO L591 BuchiCegarLoop]: Abstraction has 18 states and 22 transitions. [2019-11-19 22:20:30,486 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-19 22:20:30,486 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 22 transitions. [2019-11-19 22:20:30,487 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-11-19 22:20:30,487 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-19 22:20:30,487 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-19 22:20:30,488 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 22:20:30,488 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-19 22:20:30,488 INFO L794 eck$LassoCheckResult]: Stem: 227#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~ret5, main_~m~0, main_~n~0, main_~r~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~r~0 := main_#t~nondet4;havoc main_#t~nondet4; 228#L28 assume (main_~m~0 >= 0 && main_~n~0 >= 0) && main_~r~0 >= 0; 222#L29 call main_#t~ret5 := p(main_~m~0, main_~n~0, main_~r~0);< 230#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 232#L13 assume !(~r > 0); 225#L16 assume ~n > 0; 221#L17 call #t~ret1 := p(~r, ~n - 1, ~m);< 224#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 234#L13 assume ~r > 0; 219#L14 [2019-11-19 22:20:30,489 INFO L796 eck$LassoCheckResult]: Loop: 219#L14 call #t~ret0 := p(~m, ~r - 1, ~n);< 220#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 235#L13 assume ~r > 0; 219#L14 [2019-11-19 22:20:30,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:20:30,489 INFO L82 PathProgramCache]: Analyzing trace with hash -1891526918, now seen corresponding path program 1 times [2019-11-19 22:20:30,489 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:20:30,490 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691052066] [2019-11-19 22:20:30,490 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:20:30,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:20:30,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:20:30,528 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 22:20:30,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:20:30,529 INFO L82 PathProgramCache]: Analyzing trace with hash 56702, now seen corresponding path program 2 times [2019-11-19 22:20:30,529 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:20:30,530 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239392851] [2019-11-19 22:20:30,533 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:20:30,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:20:30,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:20:30,550 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 22:20:30,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:20:30,554 INFO L82 PathProgramCache]: Analyzing trace with hash -507463707, now seen corresponding path program 1 times [2019-11-19 22:20:30,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:20:30,555 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531401767] [2019-11-19 22:20:30,555 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:20:30,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:20:30,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:20:30,603 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 22:20:30,677 INFO L210 LassoAnalysis]: Preferences: [2019-11-19 22:20:30,678 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-19 22:20:30,678 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-19 22:20:30,678 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-19 22:20:30,678 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-19 22:20:30,678 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:20:30,678 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-19 22:20:30,678 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-19 22:20:30,678 INFO L133 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4.c_Iteration3_Loop [2019-11-19 22:20:30,678 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-19 22:20:30,678 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-19 22:20:30,680 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:20:30,692 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:20:30,703 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:20:30,708 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:20:30,712 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:20:30,793 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-19 22:20:30,793 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 22:20:30,799 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 22:20:30,799 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:20:30,805 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-19 22:20:30,806 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_#in~m=-6, p_~m=-6} Honda state: {p_#in~m=-6, p_~m=-6} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 22:20:30,813 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 22:20:30,813 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 22:20:30,830 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-19 22:20:30,831 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:20:42,869 INFO L442 LassoAnalysis]: Proving nontermination failed: SMT Solver returned 'unknown'. [2019-11-19 22:20:42,872 INFO L210 LassoAnalysis]: Preferences: [2019-11-19 22:20:42,873 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-19 22:20:42,873 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-19 22:20:42,873 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-19 22:20:42,873 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-19 22:20:42,873 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:20:42,873 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-19 22:20:42,873 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-19 22:20:42,873 INFO L133 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4.c_Iteration3_Loop [2019-11-19 22:20:42,873 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-19 22:20:42,874 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-19 22:20:42,875 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:20:42,881 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:20:42,892 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:20:42,895 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:20:42,897 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:20:42,967 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-19 22:20:42,967 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:20:42,976 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-19 22:20:42,977 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 22:20:42,977 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 22:20:42,978 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 22:20:42,978 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 22:20:42,978 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 22:20:42,979 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 22:20:42,979 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-19 22:20:42,981 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:20:42,988 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-19 22:20:42,989 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 22:20:42,989 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 22:20:42,990 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 22:20:42,990 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 22:20:42,990 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 22:20:42,991 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 22:20:42,992 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-19 22:20:43,013 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 22:20:43,021 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-19 22:20:43,022 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 22:20:43,022 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 22:20:43,023 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 22:20:43,023 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 22:20:43,023 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 22:20:43,024 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 22:20:43,024 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:20:43,026 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:20:43,035 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-19 22:20:43,037 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 22:20:43,037 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 22:20:43,037 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 22:20:43,037 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 22:20:43,037 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 22:20:43,038 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 22:20:43,038 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-19 22:20:43,041 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 22:20:43,054 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-19 22:20:43,056 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 22:20:43,056 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 22:20:43,057 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 22:20:43,057 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 22:20:43,057 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 22:20:43,058 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 22:20:43,058 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:20:43,060 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-19 22:20:43,062 INFO L489 LassoAnalysis]: Using template '2-nested'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 22:20:43,068 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-19 22:20:43,070 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 22:20:43,070 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 22:20:43,071 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 22:20:43,071 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 22:20:43,071 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2019-11-19 22:20:43,073 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2019-11-19 22:20:43,073 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:20:43,076 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:20:43,081 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-19 22:20:43,083 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 22:20:43,083 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 22:20:43,083 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 22:20:43,083 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 22:20:43,084 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2019-11-19 22:20:43,089 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2019-11-19 22:20:43,089 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-19 22:20:43,095 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-19 22:20:43,108 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2019-11-19 22:20:43,109 INFO L444 ModelExtractionUtils]: 5 out of 11 variables were initially zero. Simplification set additionally 2 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 22:20:43,116 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-19 22:20:43,116 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-19 22:20:43,117 INFO L510 LassoAnalysis]: Proved termination. [2019-11-19 22:20:43,117 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function 2-nested ranking function: f0 = 1*p_~r + 1*p_~n f1 = 1*p_~n Supporting invariants [] Waiting until toolchain timeout for monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:20:43,120 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-19 22:20:43,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:20:43,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:20:43,177 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-19 22:20:43,179 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:20:43,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:20:43,194 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-19 22:20:43,197 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:20:43,206 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 22:20:43,207 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 22:20:43,210 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 22:20:43,239 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 22:20:43,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:20:43,269 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 [2019-11-19 22:20:43,269 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 22 transitions. cyclomatic complexity: 7 Second operand 4 states. [2019-11-19 22:20:43,395 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 22 transitions. cyclomatic complexity: 7. Second operand 4 states. Result 42 states and 50 transitions. Complement of second has 9 states. [2019-11-19 22:20:43,398 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-19 22:20:43,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-19 22:20:43,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2019-11-19 22:20:43,399 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 9 letters. Loop has 3 letters. [2019-11-19 22:20:43,399 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 22:20:43,399 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 12 letters. Loop has 3 letters. [2019-11-19 22:20:43,400 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 22:20:43,400 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 9 letters. Loop has 6 letters. [2019-11-19 22:20:43,400 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 22:20:43,400 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 42 states and 50 transitions. [2019-11-19 22:20:43,403 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-11-19 22:20:43,405 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 42 states to 36 states and 44 transitions. [2019-11-19 22:20:43,405 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2019-11-19 22:20:43,405 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 19 [2019-11-19 22:20:43,405 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 44 transitions. [2019-11-19 22:20:43,406 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-19 22:20:43,406 INFO L688 BuchiCegarLoop]: Abstraction has 36 states and 44 transitions. [2019-11-19 22:20:43,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states and 44 transitions. [2019-11-19 22:20:43,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 31. [2019-11-19 22:20:43,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-19 22:20:43,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 38 transitions. [2019-11-19 22:20:43,410 INFO L711 BuchiCegarLoop]: Abstraction has 31 states and 38 transitions. [2019-11-19 22:20:43,410 INFO L591 BuchiCegarLoop]: Abstraction has 31 states and 38 transitions. [2019-11-19 22:20:43,410 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-19 22:20:43,410 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 31 states and 38 transitions. [2019-11-19 22:20:43,411 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-11-19 22:20:43,412 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-19 22:20:43,412 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-19 22:20:43,412 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 22:20:43,412 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-19 22:20:43,413 INFO L794 eck$LassoCheckResult]: Stem: 355#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~ret5, main_~m~0, main_~n~0, main_~r~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~r~0 := main_#t~nondet4;havoc main_#t~nondet4; 356#L28 assume (main_~m~0 >= 0 && main_~n~0 >= 0) && main_~r~0 >= 0; 357#L29 call main_#t~ret5 := p(main_~m~0, main_~n~0, main_~r~0);< 360#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 361#L13 assume ~r > 0; 351#L14 call #t~ret0 := p(~m, ~r - 1, ~n);< 358#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 375#L13 assume !(~r > 0); 353#L16 assume ~n > 0; 350#L17 call #t~ret1 := p(~r, ~n - 1, ~m);< 352#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 365#L13 assume ~r > 0; 349#L14 [2019-11-19 22:20:43,413 INFO L796 eck$LassoCheckResult]: Loop: 349#L14 call #t~ret0 := p(~m, ~r - 1, ~n);< 348#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 373#L13 assume ~r > 0; 349#L14 [2019-11-19 22:20:43,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:20:43,413 INFO L82 PathProgramCache]: Analyzing trace with hash 1683587899, now seen corresponding path program 2 times [2019-11-19 22:20:43,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:20:43,414 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820675541] [2019-11-19 22:20:43,414 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:20:43,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:20:43,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:20:43,433 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 22:20:43,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:20:43,434 INFO L82 PathProgramCache]: Analyzing trace with hash 56702, now seen corresponding path program 3 times [2019-11-19 22:20:43,434 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:20:43,434 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139227876] [2019-11-19 22:20:43,434 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:20:43,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:20:43,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:20:43,443 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 22:20:43,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:20:43,444 INFO L82 PathProgramCache]: Analyzing trace with hash -860956668, now seen corresponding path program 3 times [2019-11-19 22:20:43,444 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:20:43,444 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678895223] [2019-11-19 22:20:43,445 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:20:43,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:20:43,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:20:43,487 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 22:20:43,582 INFO L210 LassoAnalysis]: Preferences: [2019-11-19 22:20:43,582 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-19 22:20:43,582 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-19 22:20:43,583 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-19 22:20:43,583 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-19 22:20:43,583 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:20:43,583 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-19 22:20:43,583 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-19 22:20:43,584 INFO L133 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4.c_Iteration4_Loop [2019-11-19 22:20:43,584 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-19 22:20:43,584 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-19 22:20:43,585 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:20:43,598 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:20:43,601 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:20:43,603 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:20:43,610 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:20:43,683 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-19 22:20:43,683 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:20:43,699 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 22:20:43,699 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 22:20:43,713 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-19 22:20:43,713 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:20:55,733 INFO L442 LassoAnalysis]: Proving nontermination failed: SMT Solver returned 'unknown'. [2019-11-19 22:20:55,736 INFO L210 LassoAnalysis]: Preferences: [2019-11-19 22:20:55,736 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-19 22:20:55,736 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-19 22:20:55,736 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-19 22:20:55,737 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-19 22:20:55,737 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:20:55,737 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-19 22:20:55,737 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-19 22:20:55,737 INFO L133 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4.c_Iteration4_Loop [2019-11-19 22:20:55,737 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-19 22:20:55,737 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-19 22:20:55,738 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:20:55,748 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:20:55,750 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:20:55,752 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:20:55,758 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:20:55,822 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-19 22:20:55,822 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:20:55,826 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-19 22:20:55,828 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 22:20:55,828 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 22:20:55,828 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 22:20:55,828 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 22:20:55,828 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 22:20:55,830 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 22:20:55,830 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-19 22:20:55,832 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:20:55,838 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-19 22:20:55,840 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 22:20:55,840 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 22:20:55,840 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 22:20:55,840 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 22:20:55,840 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 22:20:55,840 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 22:20:55,841 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-19 22:20:55,842 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:20:55,848 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-19 22:20:55,849 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 22:20:55,849 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 22:20:55,849 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 22:20:55,849 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 22:20:55,850 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 22:20:55,850 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 22:20:55,850 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-19 22:20:55,851 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:20:55,857 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-19 22:20:55,859 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 22:20:55,859 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 22:20:55,859 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 22:20:55,859 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 22:20:55,859 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 22:20:55,860 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 22:20:55,860 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-19 22:20:55,861 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:20:55,869 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-19 22:20:55,870 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 22:20:55,871 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 22:20:55,871 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 22:20:55,871 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 22:20:55,871 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 22:20:55,871 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 22:20:55,871 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-19 22:20:55,872 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-19 22:20:55,873 INFO L489 LassoAnalysis]: Using template '2-nested'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:20:55,878 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-19 22:20:55,879 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 22:20:55,879 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 22:20:55,879 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 22:20:55,879 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 22:20:55,880 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2019-11-19 22:20:55,883 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2019-11-19 22:20:55,883 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-19 22:20:55,893 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-19 22:20:55,902 INFO L443 ModelExtractionUtils]: Simplification made 6 calls to the SMT solver. [2019-11-19 22:20:55,902 INFO L444 ModelExtractionUtils]: 5 out of 11 variables were initially zero. Simplification set additionally 2 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 22:20:55,913 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-19 22:20:55,913 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-19 22:20:55,913 INFO L510 LassoAnalysis]: Proved termination. [2019-11-19 22:20:55,914 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function 2-nested ranking function: f0 = 1*p_~n + 1*p_~r f1 = 1*p_~n Supporting invariants [] [2019-11-19 22:20:55,916 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 54 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:20:55,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:20:55,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:20:55,961 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-19 22:20:55,962 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:20:55,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:20:55,983 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-19 22:20:55,985 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:20:55,990 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 22:20:55,992 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 22:20:55,996 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 22:20:56,031 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 22:20:56,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:20:56,064 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 [2019-11-19 22:20:56,064 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 38 transitions. cyclomatic complexity: 12 Second operand 4 states. [2019-11-19 22:20:56,187 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 31 states and 38 transitions. cyclomatic complexity: 12. Second operand 4 states. Result 48 states and 60 transitions. Complement of second has 9 states. [2019-11-19 22:20:56,188 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-19 22:20:56,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-19 22:20:56,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2019-11-19 22:20:56,189 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 12 letters. Loop has 3 letters. [2019-11-19 22:20:56,189 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 22:20:56,189 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-19 22:20:56,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:20:56,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:20:56,231 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-19 22:20:56,232 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:20:56,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:20:56,246 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-19 22:20:56,249 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:20:56,251 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 22:20:56,252 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 22:20:56,254 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 22:20:56,279 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 22:20:56,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:20:56,309 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2019-11-19 22:20:56,309 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 38 transitions. cyclomatic complexity: 12 Second operand 4 states. [2019-11-19 22:20:56,411 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 31 states and 38 transitions. cyclomatic complexity: 12. Second operand 4 states. Result 48 states and 60 transitions. Complement of second has 9 states. [2019-11-19 22:20:56,413 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-19 22:20:56,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-19 22:20:56,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2019-11-19 22:20:56,414 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 12 letters. Loop has 3 letters. [2019-11-19 22:20:56,414 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 22:20:56,414 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-19 22:20:56,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:20:56,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:20:56,462 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-19 22:20:56,463 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:20:56,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:20:56,476 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-19 22:20:56,477 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:20:56,480 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 22:20:56,481 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 22:20:56,483 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 22:20:56,509 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 22:20:56,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:20:56,532 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2019-11-19 22:20:56,532 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 38 transitions. cyclomatic complexity: 12 Second operand 4 states. [2019-11-19 22:20:56,684 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 31 states and 38 transitions. cyclomatic complexity: 12. Second operand 4 states. Result 53 states and 68 transitions. Complement of second has 8 states. [2019-11-19 22:20:56,687 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-19 22:20:56,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-19 22:20:56,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2019-11-19 22:20:56,688 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 12 letters. Loop has 3 letters. [2019-11-19 22:20:56,688 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 22:20:56,689 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 15 letters. Loop has 3 letters. [2019-11-19 22:20:56,689 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 22:20:56,689 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 12 letters. Loop has 6 letters. [2019-11-19 22:20:56,689 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 22:20:56,690 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 53 states and 68 transitions. [2019-11-19 22:20:56,692 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2019-11-19 22:20:56,694 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 53 states to 41 states and 51 transitions. [2019-11-19 22:20:56,694 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 19 [2019-11-19 22:20:56,694 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 21 [2019-11-19 22:20:56,695 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 51 transitions. [2019-11-19 22:20:56,695 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-19 22:20:56,695 INFO L688 BuchiCegarLoop]: Abstraction has 41 states and 51 transitions. [2019-11-19 22:20:56,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states and 51 transitions. [2019-11-19 22:20:56,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 24. [2019-11-19 22:20:56,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-11-19 22:20:56,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 30 transitions. [2019-11-19 22:20:56,699 INFO L711 BuchiCegarLoop]: Abstraction has 24 states and 30 transitions. [2019-11-19 22:20:56,699 INFO L591 BuchiCegarLoop]: Abstraction has 24 states and 30 transitions. [2019-11-19 22:20:56,700 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-11-19 22:20:56,700 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 30 transitions. [2019-11-19 22:20:56,701 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2019-11-19 22:20:56,701 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-19 22:20:56,701 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-19 22:20:56,702 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 22:20:56,702 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1] [2019-11-19 22:20:56,702 INFO L794 eck$LassoCheckResult]: Stem: 724#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~ret5, main_~m~0, main_~n~0, main_~r~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~r~0 := main_#t~nondet4;havoc main_#t~nondet4; 725#L28 assume (main_~m~0 >= 0 && main_~n~0 >= 0) && main_~r~0 >= 0; 723#L29 call main_#t~ret5 := p(main_~m~0, main_~n~0, main_~r~0);< 732#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 733#L13 assume !(~r > 0); 726#L16 assume ~n > 0; 720#L17 call #t~ret1 := p(~r, ~n - 1, ~m);< 721#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 734#L13 assume ~r > 0; 718#L14 [2019-11-19 22:20:56,703 INFO L796 eck$LassoCheckResult]: Loop: 718#L14 call #t~ret0 := p(~m, ~r - 1, ~n);< 729#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 730#L13 assume !(~r > 0); 735#L16 assume ~n > 0; 716#L17 call #t~ret1 := p(~r, ~n - 1, ~m);< 719#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 736#L13 assume ~r > 0; 718#L14 [2019-11-19 22:20:56,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:20:56,703 INFO L82 PathProgramCache]: Analyzing trace with hash -1891526918, now seen corresponding path program 2 times [2019-11-19 22:20:56,703 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:20:56,704 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879052749] [2019-11-19 22:20:56,704 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:20:56,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:20:56,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:20:56,731 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 22:20:56,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:20:56,732 INFO L82 PathProgramCache]: Analyzing trace with hash 828947705, now seen corresponding path program 1 times [2019-11-19 22:20:56,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:20:56,732 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890058483] [2019-11-19 22:20:56,732 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:20:56,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:20:56,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:20:56,746 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 22:20:56,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:20:56,751 INFO L82 PathProgramCache]: Analyzing trace with hash 559352800, now seen corresponding path program 4 times [2019-11-19 22:20:56,751 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:20:56,751 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586233770] [2019-11-19 22:20:56,751 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:20:56,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:20:56,854 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-19 22:20:56,855 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586233770] [2019-11-19 22:20:56,856 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [226326683] [2019-11-19 22:20:56,856 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [MP z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Exception during sending of exit command (exit): Broken pipe Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:20:56,887 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-19 22:20:56,887 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-19 22:20:56,888 INFO L255 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-19 22:20:56,889 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:20:56,895 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-19 22:20:56,895 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 22:20:56,896 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2019-11-19 22:20:56,897 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838734971] [2019-11-19 22:20:57,222 INFO L210 LassoAnalysis]: Preferences: [2019-11-19 22:20:57,222 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-19 22:20:57,222 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-19 22:20:57,222 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-19 22:20:57,222 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-19 22:20:57,222 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:20:57,222 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-19 22:20:57,223 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-19 22:20:57,223 INFO L133 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4.c_Iteration5_Loop [2019-11-19 22:20:57,223 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-19 22:20:57,223 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-19 22:20:57,224 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:20:57,228 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:20:57,230 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:20:57,232 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:20:57,321 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-19 22:20:57,321 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 56 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:20:57,328 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 22:20:57,329 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-19 22:20:57,331 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-19 22:20:57,331 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_#res=0} Honda state: {p_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 57 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:20:57,336 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 22:20:57,337 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-19 22:20:57,345 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-19 22:20:57,345 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_#t~ret1=0} Honda state: {p_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 58 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:20:57,355 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 22:20:57,355 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-19 22:20:57,359 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-19 22:20:57,360 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_#t~ret0=0} Honda state: {p_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 59 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 22:20:57,367 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 22:20:57,367 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 59 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 60 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:20:57,388 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-19 22:20:57,388 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-19 22:21:03,333 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-19 22:21:03,336 INFO L210 LassoAnalysis]: Preferences: [2019-11-19 22:21:03,336 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-19 22:21:03,336 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-19 22:21:03,336 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-19 22:21:03,336 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-19 22:21:03,336 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:21:03,336 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-19 22:21:03,337 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-19 22:21:03,337 INFO L133 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4.c_Iteration5_Loop [2019-11-19 22:21:03,337 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-19 22:21:03,337 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-19 22:21:03,338 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:21:03,340 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:21:03,343 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:21:03,346 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:21:03,455 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-19 22:21:03,455 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 61 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:21:03,461 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-19 22:21:03,463 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 22:21:03,463 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 22:21:03,463 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 22:21:03,464 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 22:21:03,464 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 22:21:03,464 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 22:21:03,464 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-19 22:21:03,467 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 62 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 22:21:03,487 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-19 22:21:03,489 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 22:21:03,489 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 22:21:03,489 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 22:21:03,489 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 22:21:03,490 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 62 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:21:03,490 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 22:21:03,490 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-19 22:21:03,493 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 63 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:21:03,498 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-19 22:21:03,500 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 22:21:03,500 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 22:21:03,500 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 22:21:03,501 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 22:21:03,501 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 22:21:03,501 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 22:21:03,501 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-19 22:21:03,502 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 64 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:21:03,509 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-19 22:21:03,511 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 22:21:03,511 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 22:21:03,511 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 22:21:03,511 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 22:21:03,511 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 22:21:03,514 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 22:21:03,514 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-19 22:21:03,522 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-19 22:21:03,525 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-19 22:21:03,525 INFO L444 ModelExtractionUtils]: 5 out of 8 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 65 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:21:03,529 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-19 22:21:03,529 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-19 22:21:03,529 INFO L510 LassoAnalysis]: Proved termination. [2019-11-19 22:21:03,529 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(p_~m) = 1*p_~m Supporting invariants [] [2019-11-19 22:21:03,534 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-19 22:21:03,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:21:03,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:21:03,569 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-19 22:21:03,570 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:21:03,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:21:03,590 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 14 conjunts are in the unsatisfiable core [2019-11-19 22:21:03,591 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:21:03,647 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:21:03,647 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 5 loop predicates [2019-11-19 22:21:03,647 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 30 transitions. cyclomatic complexity: 9 Second operand 7 states. [2019-11-19 22:21:03,760 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 30 transitions. cyclomatic complexity: 9. Second operand 7 states. Result 104 states and 131 transitions. Complement of second has 26 states. [2019-11-19 22:21:03,761 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 1 stem states 5 non-accepting loop states 1 accepting loop states [2019-11-19 22:21:03,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-11-19 22:21:03,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 20 transitions. [2019-11-19 22:21:03,762 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 20 transitions. Stem has 9 letters. Loop has 7 letters. [2019-11-19 22:21:03,762 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 22:21:03,762 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 20 transitions. Stem has 16 letters. Loop has 7 letters. [2019-11-19 22:21:03,762 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 22:21:03,763 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 20 transitions. Stem has 9 letters. Loop has 14 letters. [2019-11-19 22:21:03,763 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 22:21:03,763 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 104 states and 131 transitions. [2019-11-19 22:21:03,766 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2019-11-19 22:21:03,769 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 104 states to 104 states and 131 transitions. [2019-11-19 22:21:03,769 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 31 [2019-11-19 22:21:03,769 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 32 [2019-11-19 22:21:03,770 INFO L73 IsDeterministic]: Start isDeterministic. Operand 104 states and 131 transitions. [2019-11-19 22:21:03,770 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-19 22:21:03,770 INFO L688 BuchiCegarLoop]: Abstraction has 104 states and 131 transitions. [2019-11-19 22:21:03,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states and 131 transitions. [2019-11-19 22:21:03,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 59. [2019-11-19 22:21:03,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2019-11-19 22:21:03,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 79 transitions. [2019-11-19 22:21:03,777 INFO L711 BuchiCegarLoop]: Abstraction has 59 states and 79 transitions. [2019-11-19 22:21:03,777 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:21:03,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-19 22:21:03,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-19 22:21:03,781 INFO L87 Difference]: Start difference. First operand 59 states and 79 transitions. Second operand 6 states. [2019-11-19 22:21:03,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:21:03,860 INFO L93 Difference]: Finished difference Result 79 states and 95 transitions. [2019-11-19 22:21:03,860 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-19 22:21:03,860 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 79 states and 95 transitions. [2019-11-19 22:21:03,862 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2019-11-19 22:21:03,863 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 79 states to 37 states and 43 transitions. [2019-11-19 22:21:03,863 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20 [2019-11-19 22:21:03,864 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 23 [2019-11-19 22:21:03,864 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 43 transitions. [2019-11-19 22:21:03,864 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-19 22:21:03,864 INFO L688 BuchiCegarLoop]: Abstraction has 37 states and 43 transitions. [2019-11-19 22:21:03,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states and 43 transitions. [2019-11-19 22:21:03,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 24. [2019-11-19 22:21:03,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-11-19 22:21:03,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2019-11-19 22:21:03,867 INFO L711 BuchiCegarLoop]: Abstraction has 24 states and 28 transitions. [2019-11-19 22:21:03,867 INFO L591 BuchiCegarLoop]: Abstraction has 24 states and 28 transitions. [2019-11-19 22:21:03,867 INFO L424 BuchiCegarLoop]: ======== Iteration 6============ [2019-11-19 22:21:03,867 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 28 transitions. [2019-11-19 22:21:03,867 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-19 22:21:03,868 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-19 22:21:03,868 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-19 22:21:03,868 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 22:21:03,868 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-11-19 22:21:03,868 INFO L794 eck$LassoCheckResult]: Stem: 1150#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~ret5, main_~m~0, main_~n~0, main_~r~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~r~0 := main_#t~nondet4;havoc main_#t~nondet4; 1151#L28 assume (main_~m~0 >= 0 && main_~n~0 >= 0) && main_~r~0 >= 0; 1152#L29 call main_#t~ret5 := p(main_~m~0, main_~n~0, main_~r~0);< 1157#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 1163#L13 assume !(~r > 0); 1162#L16 assume ~n > 0; 1153#L17 call #t~ret1 := p(~r, ~n - 1, ~m);< 1161#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 1160#L13 assume ~r > 0; 1144#L14 call #t~ret0 := p(~m, ~r - 1, ~n);< 1142#pENTRY [2019-11-19 22:21:03,869 INFO L796 eck$LassoCheckResult]: Loop: 1142#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 1154#L13 assume !(~r > 0); 1148#L16 assume ~n > 0; 1141#L17 call #t~ret1 := p(~r, ~n - 1, ~m);< 1142#pENTRY [2019-11-19 22:21:03,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:21:03,869 INFO L82 PathProgramCache]: Analyzing trace with hash 1492207714, now seen corresponding path program 5 times [2019-11-19 22:21:03,869 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:21:03,869 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044987016] [2019-11-19 22:21:03,869 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:21:03,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:21:03,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:21:03,881 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 22:21:03,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:21:03,882 INFO L82 PathProgramCache]: Analyzing trace with hash 929596, now seen corresponding path program 2 times [2019-11-19 22:21:03,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:21:03,882 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071828761] [2019-11-19 22:21:03,883 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:21:03,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:21:03,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:21:03,888 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 22:21:03,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:21:03,889 INFO L82 PathProgramCache]: Analyzing trace with hash 1953652509, now seen corresponding path program 6 times [2019-11-19 22:21:03,889 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:21:03,889 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922948401] [2019-11-19 22:21:03,890 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:21:03,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:21:03,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:21:03,903 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 22:21:03,953 INFO L210 LassoAnalysis]: Preferences: [2019-11-19 22:21:03,953 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-19 22:21:03,953 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-19 22:21:03,953 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-19 22:21:03,954 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-19 22:21:03,954 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:21:03,954 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-19 22:21:03,954 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-19 22:21:03,954 INFO L133 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4.c_Iteration6_Loop [2019-11-19 22:21:03,954 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-19 22:21:03,954 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-19 22:21:03,955 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:21:03,958 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:21:03,959 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:21:03,964 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:21:03,967 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:21:03,969 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:21:03,971 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:21:03,973 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:21:04,025 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-19 22:21:04,026 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 66 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:21:04,033 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 22:21:04,033 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-19 22:21:04,036 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-19 22:21:04,036 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_#res=0} Honda state: {p_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 67 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:21:04,042 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 22:21:04,042 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-19 22:21:04,044 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-19 22:21:04,044 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_~r=0} Honda state: {p_~r=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 68 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:21:04,050 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 22:21:04,051 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 69 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:21:04,060 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-19 22:21:04,060 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-19 22:21:04,065 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-19 22:21:04,066 INFO L210 LassoAnalysis]: Preferences: [2019-11-19 22:21:04,066 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-19 22:21:04,066 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-19 22:21:04,067 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-19 22:21:04,067 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-19 22:21:04,067 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:21:04,067 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-19 22:21:04,067 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-19 22:21:04,067 INFO L133 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4.c_Iteration6_Loop [2019-11-19 22:21:04,067 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-19 22:21:04,067 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-19 22:21:04,068 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:21:04,073 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:21:04,079 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:21:04,080 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:21:04,084 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:21:04,086 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:21:04,093 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:21:04,098 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:21:04,159 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-19 22:21:04,159 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 70 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 22:21:04,166 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-19 22:21:04,168 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 22:21:04,168 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 22:21:04,168 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 22:21:04,168 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 22:21:04,168 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 22:21:04,170 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 22:21:04,170 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 70 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:21:04,171 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 71 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 22:21:04,178 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-19 22:21:04,180 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 22:21:04,180 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 22:21:04,180 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 22:21:04,181 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 22:21:04,181 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 22:21:04,181 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 22:21:04,182 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 71 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:21:04,183 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 72 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 22:21:04,190 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-19 22:21:04,192 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 22:21:04,193 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 22:21:04,193 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 22:21:04,193 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 22:21:04,193 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 22:21:04,194 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 22:21:04,194 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 72 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:21:04,196 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 73 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 22:21:04,204 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-19 22:21:04,206 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 22:21:04,206 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 22:21:04,206 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 22:21:04,206 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 22:21:04,207 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 22:21:04,207 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 22:21:04,207 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 73 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:21:04,211 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-19 22:21:04,215 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-19 22:21:04,215 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 74 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 22:21:04,220 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-19 22:21:04,220 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-19 22:21:04,220 INFO L510 LassoAnalysis]: Proved termination. [2019-11-19 22:21:04,220 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(p_#in~n) = 1*p_#in~n Supporting invariants [] [2019-11-19 22:21:04,222 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 74 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:21:04,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:21:04,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:21:04,257 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-19 22:21:04,259 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:21:04,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:21:04,269 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-19 22:21:04,270 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:21:04,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:21:04,290 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 [2019-11-19 22:21:04,290 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 28 transitions. cyclomatic complexity: 7 Second operand 4 states. [2019-11-19 22:21:04,341 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 28 transitions. cyclomatic complexity: 7. Second operand 4 states. Result 62 states and 70 transitions. Complement of second has 13 states. [2019-11-19 22:21:04,343 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-19 22:21:04,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-19 22:21:04,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2019-11-19 22:21:04,343 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 10 letters. Loop has 4 letters. [2019-11-19 22:21:04,344 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 22:21:04,344 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 14 letters. Loop has 4 letters. [2019-11-19 22:21:04,344 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 22:21:04,344 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 10 letters. Loop has 8 letters. [2019-11-19 22:21:04,344 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 22:21:04,345 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 62 states and 70 transitions. [2019-11-19 22:21:04,346 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-19 22:21:04,347 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 62 states to 39 states and 46 transitions. [2019-11-19 22:21:04,347 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2019-11-19 22:21:04,348 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2019-11-19 22:21:04,348 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 46 transitions. [2019-11-19 22:21:04,348 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-19 22:21:04,348 INFO L688 BuchiCegarLoop]: Abstraction has 39 states and 46 transitions. [2019-11-19 22:21:04,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states and 46 transitions. [2019-11-19 22:21:04,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 24. [2019-11-19 22:21:04,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-11-19 22:21:04,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2019-11-19 22:21:04,351 INFO L711 BuchiCegarLoop]: Abstraction has 24 states and 27 transitions. [2019-11-19 22:21:04,351 INFO L591 BuchiCegarLoop]: Abstraction has 24 states and 27 transitions. [2019-11-19 22:21:04,352 INFO L424 BuchiCegarLoop]: ======== Iteration 7============ [2019-11-19 22:21:04,352 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 27 transitions. [2019-11-19 22:21:04,352 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-19 22:21:04,353 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-19 22:21:04,353 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-19 22:21:04,353 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2019-11-19 22:21:04,354 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-11-19 22:21:04,354 INFO L794 eck$LassoCheckResult]: Stem: 1308#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~ret5, main_~m~0, main_~n~0, main_~r~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~r~0 := main_#t~nondet4;havoc main_#t~nondet4; 1309#L28 assume (main_~m~0 >= 0 && main_~n~0 >= 0) && main_~r~0 >= 0; 1312#L29 call main_#t~ret5 := p(main_~m~0, main_~n~0, main_~r~0);< 1319#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 1320#L13 assume !(~r > 0); 1321#L16 assume ~n > 0; 1314#L17 call #t~ret1 := p(~r, ~n - 1, ~m);< 1323#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 1322#L13 assume ~r > 0; 1313#L14 call #t~ret0 := p(~m, ~r - 1, ~n);< 1307#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 1318#L13 assume ~r > 0; 1303#L14 call #t~ret0 := p(~m, ~r - 1, ~n);< 1304#pENTRY [2019-11-19 22:21:04,354 INFO L796 eck$LassoCheckResult]: Loop: 1304#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 1324#L13 assume !(~r > 0); 1310#L16 assume ~n > 0; 1302#L17 call #t~ret1 := p(~r, ~n - 1, ~m);< 1304#pENTRY [2019-11-19 22:21:04,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:21:04,354 INFO L82 PathProgramCache]: Analyzing trace with hash 1448494295, now seen corresponding path program 7 times [2019-11-19 22:21:04,355 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:21:04,355 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842642614] [2019-11-19 22:21:04,355 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:21:04,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:21:04,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:21:04,370 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 22:21:04,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:21:04,370 INFO L82 PathProgramCache]: Analyzing trace with hash 929596, now seen corresponding path program 3 times [2019-11-19 22:21:04,371 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:21:04,371 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993432470] [2019-11-19 22:21:04,371 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:21:04,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:21:04,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:21:04,376 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 22:21:04,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:21:04,377 INFO L82 PathProgramCache]: Analyzing trace with hash 90839314, now seen corresponding path program 8 times [2019-11-19 22:21:04,377 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:21:04,378 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914985480] [2019-11-19 22:21:04,378 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:21:04,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:21:04,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:21:04,392 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 22:21:04,451 INFO L210 LassoAnalysis]: Preferences: [2019-11-19 22:21:04,451 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-19 22:21:04,451 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-19 22:21:04,451 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-19 22:21:04,451 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-19 22:21:04,452 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:21:04,452 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-19 22:21:04,452 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-19 22:21:04,452 INFO L133 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4.c_Iteration7_Loop [2019-11-19 22:21:04,452 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-19 22:21:04,452 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-19 22:21:04,454 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:21:04,467 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:21:04,478 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:21:04,480 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:21:04,481 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:21:04,486 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:21:04,487 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:21:04,489 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:21:04,533 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-19 22:21:04,533 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 75 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 75 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:21:04,537 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 22:21:04,537 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-19 22:21:04,540 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-19 22:21:04,540 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_#res=0} Honda state: {p_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 76 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 76 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:21:04,545 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 22:21:04,545 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-19 22:21:04,549 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-19 22:21:04,549 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_#in~m=0, p_#in~r=0} Honda state: {p_#in~m=0, p_#in~r=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 77 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 77 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:21:04,554 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 22:21:04,554 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-19 22:21:04,556 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-19 22:21:04,556 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_~m=0} Honda state: {p_~m=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 78 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 78 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:21:04,562 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 22:21:04,562 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-19 22:21:04,565 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-19 22:21:04,565 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_~r=0} Honda state: {p_~r=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 79 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 79 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:21:04,571 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 22:21:04,571 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 80 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 80 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:21:04,580 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-19 22:21:04,580 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-19 22:21:04,625 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-19 22:21:04,627 INFO L210 LassoAnalysis]: Preferences: [2019-11-19 22:21:04,627 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-19 22:21:04,627 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-19 22:21:04,627 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-19 22:21:04,627 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-19 22:21:04,627 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:21:04,627 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-19 22:21:04,627 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-19 22:21:04,628 INFO L133 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4.c_Iteration7_Loop [2019-11-19 22:21:04,628 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-19 22:21:04,628 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-19 22:21:04,629 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:21:04,630 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:21:04,636 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:21:04,638 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:21:04,643 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:21:04,646 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:21:04,647 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:21:04,648 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:21:04,698 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-19 22:21:04,698 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 81 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 81 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:21:04,703 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-19 22:21:04,704 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 22:21:04,704 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 22:21:04,704 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 22:21:04,705 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 22:21:04,705 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 22:21:04,705 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 22:21:04,705 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-19 22:21:04,706 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 82 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 82 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:21:04,712 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-19 22:21:04,713 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 22:21:04,713 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 22:21:04,714 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 22:21:04,714 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 22:21:04,714 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 22:21:04,715 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 22:21:04,715 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-19 22:21:04,717 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 83 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 83 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:21:04,721 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-19 22:21:04,723 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 22:21:04,723 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 22:21:04,723 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 22:21:04,723 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 22:21:04,723 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 22:21:04,729 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 22:21:04,729 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-19 22:21:04,730 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 84 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 84 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:21:04,735 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-19 22:21:04,737 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 22:21:04,737 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 22:21:04,737 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 22:21:04,737 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 22:21:04,737 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 22:21:04,738 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 22:21:04,738 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-19 22:21:04,740 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-19 22:21:04,746 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-19 22:21:04,746 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 85 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 85 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:21:04,750 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-19 22:21:04,750 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-19 22:21:04,750 INFO L510 LassoAnalysis]: Proved termination. [2019-11-19 22:21:04,751 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(p_#in~n) = 1*p_#in~n Supporting invariants [] [2019-11-19 22:21:04,752 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-19 22:21:04,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:21:04,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:21:04,790 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-19 22:21:04,792 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:21:04,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:21:04,804 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-19 22:21:04,805 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:21:04,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:21:04,821 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 [2019-11-19 22:21:04,821 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 27 transitions. cyclomatic complexity: 6 Second operand 4 states. [2019-11-19 22:21:04,859 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 27 transitions. cyclomatic complexity: 6. Second operand 4 states. Result 48 states and 55 transitions. Complement of second has 11 states. [2019-11-19 22:21:04,860 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-19 22:21:04,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-19 22:21:04,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2019-11-19 22:21:04,860 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 13 letters. Loop has 4 letters. [2019-11-19 22:21:04,860 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 22:21:04,860 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-19 22:21:04,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:21:04,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:21:04,903 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-19 22:21:04,905 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:21:04,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:21:04,914 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-19 22:21:04,914 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:21:04,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:21:04,933 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2019-11-19 22:21:04,933 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 27 transitions. cyclomatic complexity: 6 Second operand 4 states. [2019-11-19 22:21:04,979 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 27 transitions. cyclomatic complexity: 6. Second operand 4 states. Result 48 states and 55 transitions. Complement of second has 11 states. [2019-11-19 22:21:04,982 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-19 22:21:04,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-19 22:21:04,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2019-11-19 22:21:04,983 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 13 letters. Loop has 4 letters. [2019-11-19 22:21:04,983 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 22:21:04,983 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-19 22:21:04,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:21:05,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:21:05,028 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-19 22:21:05,029 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:21:05,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:21:05,042 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-19 22:21:05,043 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:21:05,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:21:05,061 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2019-11-19 22:21:05,061 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 27 transitions. cyclomatic complexity: 6 Second operand 4 states. [2019-11-19 22:21:05,111 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 27 transitions. cyclomatic complexity: 6. Second operand 4 states. Result 48 states and 53 transitions. Complement of second has 12 states. [2019-11-19 22:21:05,113 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-19 22:21:05,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-19 22:21:05,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2019-11-19 22:21:05,114 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 13 letters. Loop has 4 letters. [2019-11-19 22:21:05,114 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 22:21:05,114 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 17 letters. Loop has 4 letters. [2019-11-19 22:21:05,115 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 22:21:05,115 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 13 letters. Loop has 8 letters. [2019-11-19 22:21:05,115 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 22:21:05,115 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 48 states and 53 transitions. [2019-11-19 22:21:05,117 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-19 22:21:05,117 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 48 states to 0 states and 0 transitions. [2019-11-19 22:21:05,117 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-19 22:21:05,118 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-19 22:21:05,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-19 22:21:05,118 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-19 22:21:05,118 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-19 22:21:05,119 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-19 22:21:05,119 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-19 22:21:05,119 INFO L424 BuchiCegarLoop]: ======== Iteration 8============ [2019-11-19 22:21:05,119 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-19 22:21:05,119 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-19 22:21:05,120 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-19 22:21:05,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 19.11 10:21:05 BoogieIcfgContainer [2019-11-19 22:21:05,127 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-19 22:21:05,128 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-19 22:21:05,128 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-19 22:21:05,128 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-19 22:21:05,129 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 10:20:24" (3/4) ... [2019-11-19 22:21:05,134 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-19 22:21:05,134 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-19 22:21:05,136 INFO L168 Benchmark]: Toolchain (without parser) took 41106.61 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 267.4 MB). Free memory was 961.7 MB in the beginning and 843.6 MB in the end (delta: 118.1 MB). Peak memory consumption was 385.5 MB. Max. memory is 11.5 GB. [2019-11-19 22:21:05,137 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 22:21:05,138 INFO L168 Benchmark]: CACSL2BoogieTranslator took 316.10 ms. Allocated memory is still 1.0 GB. Free memory was 961.7 MB in the beginning and 949.6 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. [2019-11-19 22:21:05,139 INFO L168 Benchmark]: Boogie Procedure Inliner took 98.05 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 949.6 MB in the beginning and 1.1 GB in the end (delta: -184.3 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. [2019-11-19 22:21:05,139 INFO L168 Benchmark]: Boogie Preprocessor took 20.44 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 22:21:05,140 INFO L168 Benchmark]: RCFGBuilder took 252.65 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 11.5 GB. [2019-11-19 22:21:05,141 INFO L168 Benchmark]: BuchiAutomizer took 40407.66 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 130.0 MB). Free memory was 1.1 GB in the beginning and 843.6 MB in the end (delta: 271.0 MB). Peak memory consumption was 401.0 MB. Max. memory is 11.5 GB. [2019-11-19 22:21:05,141 INFO L168 Benchmark]: Witness Printer took 6.22 ms. Allocated memory is still 1.3 GB. Free memory is still 843.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 22:21:05,144 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 316.10 ms. Allocated memory is still 1.0 GB. Free memory was 961.7 MB in the beginning and 949.6 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 98.05 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 949.6 MB in the beginning and 1.1 GB in the end (delta: -184.3 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 20.44 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 252.65 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 40407.66 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 130.0 MB). Free memory was 1.1 GB in the beginning and 843.6 MB in the end (delta: 271.0 MB). Peak memory consumption was 401.0 MB. Max. memory is 11.5 GB. * Witness Printer took 6.22 ms. Allocated memory is still 1.3 GB. Free memory is still 843.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 8 terminating modules (1 trivial, 5 deterministic, 2 nondeterministic). One deterministic module has 2-nested ranking function (if \old(n) + \old(r) > 0 then 1 else 0), (if \old(n) + \old(r) > 0 then \old(n) + \old(r) else \old(r)) and consists of 4 locations. One deterministic module has affine ranking function n and consists of 5 locations. One deterministic module has 2-nested ranking function (if r + n > 0 then 1 else 0), (if r + n > 0 then r + n else n) and consists of 4 locations. One deterministic module has affine ranking function m and consists of 7 locations. One deterministic module has affine ranking function \old(n) and consists of 4 locations. One nondeterministic module has 2-nested ranking function (if n + r > 0 then 1 else 0), (if n + r > 0 then n + r else n) and consists of 4 locations. One nondeterministic module has affine ranking function \old(n) and consists of 4 locations. 1 modules have a trivial ranking function, the largest among these consists of 6 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 40.2s and 8 iterations. TraceHistogramMax:3. Analysis of lassos took 37.6s. Construction of modules took 0.2s. Büchi inclusion checks took 2.1s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 7. Automata minimization 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 104 StatesRemovedByMinimization, 7 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 31 states and ocurred in iteration 3. Nontrivial modules had stage [5, 0, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/2 HoareTripleCheckerStatistics: 146 SDtfs, 159 SDslu, 59 SDs, 0 SdLazy, 192 SolverSat, 37 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT6 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital24 mio100 ax100 hnf99 lsp73 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq180 hnf89 smp100 dnf100 smp100 tf107 neg100 sie105 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 21ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 3 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 19 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 2 LassoNonterminationAnalysisTime: 33.5s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...