./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex4_true-termination_true-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_0f34139a-6840-4123-bc66-112da4a4fa69/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_0f34139a-6840-4123-bc66-112da4a4fa69/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_0f34139a-6840-4123-bc66-112da4a4fa69/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_0f34139a-6840-4123-bc66-112da4a4fa69/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex4_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_0f34139a-6840-4123-bc66-112da4a4fa69/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_0f34139a-6840-4123-bc66-112da4a4fa69/bin-2019/uautomizer --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 0.1.23-635dfa2 [2018-12-08 09:21:32,854 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-08 09:21:32,855 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-08 09:21:32,861 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-08 09:21:32,861 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-08 09:21:32,862 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-08 09:21:32,862 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-08 09:21:32,863 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-08 09:21:32,864 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-08 09:21:32,864 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-08 09:21:32,865 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-08 09:21:32,865 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-08 09:21:32,865 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-08 09:21:32,866 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-08 09:21:32,866 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-08 09:21:32,867 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-08 09:21:32,867 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-08 09:21:32,868 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-08 09:21:32,869 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-08 09:21:32,870 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-08 09:21:32,870 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-08 09:21:32,871 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-08 09:21:32,872 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-08 09:21:32,872 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-08 09:21:32,872 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-08 09:21:32,873 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-08 09:21:32,873 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-08 09:21:32,873 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-08 09:21:32,874 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-08 09:21:32,874 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-08 09:21:32,875 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-08 09:21:32,875 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-08 09:21:32,875 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-08 09:21:32,875 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-08 09:21:32,876 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-08 09:21:32,876 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-08 09:21:32,876 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_0f34139a-6840-4123-bc66-112da4a4fa69/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-12-08 09:21:32,884 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-08 09:21:32,884 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-08 09:21:32,885 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-08 09:21:32,885 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-08 09:21:32,885 INFO L133 SettingsManager]: * Use SBE=true [2018-12-08 09:21:32,885 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-12-08 09:21:32,885 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-12-08 09:21:32,885 INFO L133 SettingsManager]: * Use old map elimination=false [2018-12-08 09:21:32,885 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-12-08 09:21:32,885 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-12-08 09:21:32,886 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-12-08 09:21:32,886 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-08 09:21:32,886 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-08 09:21:32,886 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-08 09:21:32,886 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-08 09:21:32,886 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-12-08 09:21:32,886 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-12-08 09:21:32,886 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-12-08 09:21:32,886 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-08 09:21:32,886 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-12-08 09:21:32,886 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-08 09:21:32,887 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-12-08 09:21:32,887 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-08 09:21:32,887 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-08 09:21:32,887 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-12-08 09:21:32,887 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-08 09:21:32,887 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-08 09:21:32,887 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-12-08 09:21:32,888 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-12-08 09:21:32,888 INFO L133 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 -> /tmp/vcloud-vcloud-master/worker/working_dir_0f34139a-6840-4123-bc66-112da4a4fa69/bin-2019/uautomizer 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 [2018-12-08 09:21:32,904 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-08 09:21:32,911 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-08 09:21:32,913 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-08 09:21:32,914 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-08 09:21:32,914 INFO L276 PluginConnector]: CDTParser initialized [2018-12-08 09:21:32,914 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_0f34139a-6840-4123-bc66-112da4a4fa69/bin-2019/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex4_true-termination_true-no-overflow.c [2018-12-08 09:21:32,949 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_0f34139a-6840-4123-bc66-112da4a4fa69/bin-2019/uautomizer/data/157bb4f9d/b470d049e2804e81a6fb1be600608180/FLAGe92695214 [2018-12-08 09:21:33,299 INFO L307 CDTParser]: Found 1 translation units. [2018-12-08 09:21:33,300 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_0f34139a-6840-4123-bc66-112da4a4fa69/sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex4_true-termination_true-no-overflow.c [2018-12-08 09:21:33,303 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_0f34139a-6840-4123-bc66-112da4a4fa69/bin-2019/uautomizer/data/157bb4f9d/b470d049e2804e81a6fb1be600608180/FLAGe92695214 [2018-12-08 09:21:33,311 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_0f34139a-6840-4123-bc66-112da4a4fa69/bin-2019/uautomizer/data/157bb4f9d/b470d049e2804e81a6fb1be600608180 [2018-12-08 09:21:33,312 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-08 09:21:33,313 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-08 09:21:33,313 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-08 09:21:33,314 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-08 09:21:33,316 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-08 09:21:33,316 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 09:21:33" (1/1) ... [2018-12-08 09:21:33,317 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b368404 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 09:21:33, skipping insertion in model container [2018-12-08 09:21:33,318 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 09:21:33" (1/1) ... [2018-12-08 09:21:33,322 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-08 09:21:33,330 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-08 09:21:33,411 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 09:21:33,413 INFO L191 MainTranslator]: Completed pre-run [2018-12-08 09:21:33,421 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 09:21:33,429 INFO L195 MainTranslator]: Completed translation [2018-12-08 09:21:33,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 09:21:33 WrapperNode [2018-12-08 09:21:33,429 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-08 09:21:33,430 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-08 09:21:33,430 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-08 09:21:33,430 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-08 09:21:33,436 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 09:21:33" (1/1) ... [2018-12-08 09:21:33,440 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 09:21:33" (1/1) ... [2018-12-08 09:21:33,455 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-08 09:21:33,455 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-08 09:21:33,455 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-08 09:21:33,455 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-08 09:21:33,463 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 09:21:33" (1/1) ... [2018-12-08 09:21:33,463 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 09:21:33" (1/1) ... [2018-12-08 09:21:33,464 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 09:21:33" (1/1) ... [2018-12-08 09:21:33,464 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 09:21:33" (1/1) ... [2018-12-08 09:21:33,465 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 09:21:33" (1/1) ... [2018-12-08 09:21:33,467 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 09:21:33" (1/1) ... [2018-12-08 09:21:33,468 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 09:21:33" (1/1) ... [2018-12-08 09:21:33,469 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-08 09:21:33,469 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-08 09:21:33,469 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-08 09:21:33,469 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-08 09:21:33,470 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 09:21:33" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f34139a-6840-4123-bc66-112da4a4fa69/bin-2019/uautomizer/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 [2018-12-08 09:21:33,529 INFO L130 BoogieDeclarations]: Found specification of procedure p [2018-12-08 09:21:33,529 INFO L138 BoogieDeclarations]: Found implementation of procedure p [2018-12-08 09:21:33,529 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-08 09:21:33,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-08 09:21:33,606 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-08 09:21:33,606 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-12-08 09:21:33,606 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 09:21:33 BoogieIcfgContainer [2018-12-08 09:21:33,606 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-08 09:21:33,607 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-12-08 09:21:33,607 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-12-08 09:21:33,609 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-12-08 09:21:33,610 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-08 09:21:33,610 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 08.12 09:21:33" (1/3) ... [2018-12-08 09:21:33,610 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3d33dea6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 08.12 09:21:33, skipping insertion in model container [2018-12-08 09:21:33,610 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-08 09:21:33,610 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 09:21:33" (2/3) ... [2018-12-08 09:21:33,611 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3d33dea6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 08.12 09:21:33, skipping insertion in model container [2018-12-08 09:21:33,611 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-08 09:21:33,611 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 09:21:33" (3/3) ... [2018-12-08 09:21:33,612 INFO L375 chiAutomizerObserver]: Analyzing ICFG LeeJonesBen-Amram-POPL2001-Ex4_true-termination_true-no-overflow.c [2018-12-08 09:21:33,644 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-08 09:21:33,645 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-12-08 09:21:33,645 INFO L375 BuchiCegarLoop]: Hoare is false [2018-12-08 09:21:33,645 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-12-08 09:21:33,645 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-08 09:21:33,645 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-08 09:21:33,645 INFO L379 BuchiCegarLoop]: Difference is false [2018-12-08 09:21:33,645 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-08 09:21:33,645 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-12-08 09:21:33,654 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states. [2018-12-08 09:21:33,669 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-12-08 09:21:33,669 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-08 09:21:33,669 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-08 09:21:33,674 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-12-08 09:21:33,674 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-12-08 09:21:33,674 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-12-08 09:21:33,674 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states. [2018-12-08 09:21:33,675 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-12-08 09:21:33,675 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-08 09:21:33,676 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-08 09:21:33,676 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-12-08 09:21:33,676 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-12-08 09:21:33,681 INFO L794 eck$LassoCheckResult]: Stem: 15#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~ret5, main_~m~0, main_~n~0, main_~r~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~r~0 := main_#t~nondet4;havoc main_#t~nondet4; 7#L28true assume (main_~m~0 >= 0 && main_~n~0 >= 0) && main_~r~0 >= 0; 10#L29true call main_#t~ret5 := p(main_~m~0, main_~n~0, main_~r~0);< 11#pENTRYtrue [2018-12-08 09:21:33,681 INFO L796 eck$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 [2018-12-08 09:21:33,685 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 09:21:33,685 INFO L82 PathProgramCache]: Analyzing trace with hash 44796, now seen corresponding path program 1 times [2018-12-08 09:21:33,686 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 09:21:33,687 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 09:21:33,715 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 09:21:33,715 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 09:21:33,715 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 09:21:33,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 09:21:33,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 09:21:33,749 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 09:21:33,749 INFO L82 PathProgramCache]: Analyzing trace with hash 29912, now seen corresponding path program 1 times [2018-12-08 09:21:33,749 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 09:21:33,749 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 09:21:33,750 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 09:21:33,750 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 09:21:33,750 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 09:21:33,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 09:21:33,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 09:21:33,756 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 09:21:33,757 INFO L82 PathProgramCache]: Analyzing trace with hash 1334517757, now seen corresponding path program 1 times [2018-12-08 09:21:33,757 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 09:21:33,757 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 09:21:33,757 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 09:21:33,757 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 09:21:33,758 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 09:21:33,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 09:21:33,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 09:21:33,851 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 09:21:33,852 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 09:21:33,852 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 09:21:33,852 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 09:21:33,852 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-08 09:21:33,852 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 09:21:33,852 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 09:21:33,852 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 09:21:33,852 INFO L131 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4_true-termination_true-no-overflow.c_Iteration1_Loop [2018-12-08 09:21:33,852 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 09:21:33,852 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 09:21:33,866 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:21:33,870 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:21:33,873 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:21:33,875 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:21:33,878 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:21:33,880 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:21:33,881 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:21:33,888 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:21:33,930 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 09:21:33,931 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f34139a-6840-4123-bc66-112da4a4fa69/bin-2019/uautomizer/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 [2018-12-08 09:21:33,936 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 09:21:33,936 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 09:21:33,941 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-08 09:21:33,942 INFO L448 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 /tmp/vcloud-vcloud-master/worker/working_dir_0f34139a-6840-4123-bc66-112da4a4fa69/bin-2019/uautomizer/z3 Starting monitored process 3 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 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 09:21:33,956 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 09:21:33,956 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 09:21:33,958 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-08 09:21:33,959 INFO L448 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 /tmp/vcloud-vcloud-master/worker/working_dir_0f34139a-6840-4123-bc66-112da4a4fa69/bin-2019/uautomizer/z3 Starting monitored process 4 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 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 09:21:33,974 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 09:21:33,974 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 09:21:33,976 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-08 09:21:33,976 INFO L448 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 /tmp/vcloud-vcloud-master/worker/working_dir_0f34139a-6840-4123-bc66-112da4a4fa69/bin-2019/uautomizer/z3 Starting monitored process 5 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 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 09:21:33,991 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 09:21:33,991 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 09:21:33,993 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-08 09:21:33,993 INFO L448 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 /tmp/vcloud-vcloud-master/worker/working_dir_0f34139a-6840-4123-bc66-112da4a4fa69/bin-2019/uautomizer/z3 Starting monitored process 6 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 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 09:21:34,008 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 09:21:34,008 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 09:21:34,011 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-08 09:21:34,011 INFO L448 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 /tmp/vcloud-vcloud-master/worker/working_dir_0f34139a-6840-4123-bc66-112da4a4fa69/bin-2019/uautomizer/z3 Starting monitored process 7 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 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 09:21:34,025 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 09:21:34,025 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 09:21:34,027 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-08 09:21:34,028 INFO L448 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 /tmp/vcloud-vcloud-master/worker/working_dir_0f34139a-6840-4123-bc66-112da4a4fa69/bin-2019/uautomizer/z3 Starting monitored process 8 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 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 09:21:34,042 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 09:21:34,043 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f34139a-6840-4123-bc66-112da4a4fa69/bin-2019/uautomizer/z3 Starting monitored process 9 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 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 09:21:34,061 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-08 09:21:34,061 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 09:21:34,126 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-08 09:21:34,128 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 09:21:34,128 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 09:21:34,128 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 09:21:34,128 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 09:21:34,128 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-08 09:21:34,128 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 09:21:34,128 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 09:21:34,128 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 09:21:34,128 INFO L131 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4_true-termination_true-no-overflow.c_Iteration1_Loop [2018-12-08 09:21:34,129 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 09:21:34,129 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 09:21:34,130 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:21:34,131 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:21:34,132 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:21:34,133 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:21:34,135 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:21:34,137 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:21:34,138 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:21:34,148 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:21:34,193 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 09:21:34,196 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-08 09:21:34,197 INFO L122 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 [2018-12-08 09:21:34,197 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 09:21:34,198 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 09:21:34,198 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 09:21:34,198 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 09:21:34,198 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 09:21:34,199 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 09:21:34,199 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 09:21:34,202 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 09:21:34,202 INFO L122 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 [2018-12-08 09:21:34,202 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 09:21:34,202 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 09:21:34,203 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 09:21:34,203 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 09:21:34,203 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 09:21:34,203 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 09:21:34,203 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 09:21:34,204 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 09:21:34,204 INFO L122 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 [2018-12-08 09:21:34,204 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 09:21:34,204 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 09:21:34,205 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 09:21:34,205 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 09:21:34,205 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 09:21:34,205 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 09:21:34,205 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 09:21:34,206 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 09:21:34,206 INFO L122 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 [2018-12-08 09:21:34,206 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 09:21:34,206 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 09:21:34,206 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 09:21:34,207 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 09:21:34,207 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 09:21:34,207 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 09:21:34,207 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 09:21:34,208 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 09:21:34,208 INFO L122 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 [2018-12-08 09:21:34,208 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 09:21:34,208 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 09:21:34,209 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 09:21:34,209 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 09:21:34,209 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 09:21:34,209 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 09:21:34,209 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 09:21:34,210 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 09:21:34,210 INFO L122 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 [2018-12-08 09:21:34,211 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 09:21:34,211 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 09:21:34,211 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 09:21:34,211 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 09:21:34,211 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 09:21:34,211 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 09:21:34,211 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 09:21:34,212 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 09:21:34,212 INFO L122 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 [2018-12-08 09:21:34,213 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 09:21:34,213 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 09:21:34,213 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 09:21:34,213 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 09:21:34,213 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 09:21:34,213 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 09:21:34,213 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 09:21:34,217 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 09:21:34,218 INFO L122 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 [2018-12-08 09:21:34,218 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 09:21:34,218 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 09:21:34,218 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 09:21:34,218 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 09:21:34,219 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 09:21:34,219 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 09:21:34,219 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 09:21:34,220 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 09:21:34,220 INFO L497 LassoAnalysis]: Using template '2-nested'. [2018-12-08 09:21:34,220 INFO L122 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 [2018-12-08 09:21:34,220 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 09:21:34,220 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 09:21:34,221 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 09:21:34,221 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 09:21:34,221 INFO L207 nArgumentSynthesizer]: 3 template conjuncts. [2018-12-08 09:21:34,221 INFO L402 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2018-12-08 09:21:34,221 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 09:21:34,222 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 09:21:34,222 INFO L122 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 [2018-12-08 09:21:34,223 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 09:21:34,223 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 09:21:34,223 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 09:21:34,223 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 09:21:34,223 INFO L207 nArgumentSynthesizer]: 3 template conjuncts. [2018-12-08 09:21:34,223 INFO L402 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2018-12-08 09:21:34,223 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 09:21:34,224 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 09:21:34,224 INFO L122 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 [2018-12-08 09:21:34,225 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 09:21:34,225 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 09:21:34,225 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 09:21:34,225 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 09:21:34,225 INFO L207 nArgumentSynthesizer]: 3 template conjuncts. [2018-12-08 09:21:34,225 INFO L402 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2018-12-08 09:21:34,225 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 09:21:34,227 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 09:21:34,227 INFO L122 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 [2018-12-08 09:21:34,227 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 09:21:34,227 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 09:21:34,227 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 09:21:34,227 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 09:21:34,228 INFO L207 nArgumentSynthesizer]: 3 template conjuncts. [2018-12-08 09:21:34,228 INFO L402 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2018-12-08 09:21:34,228 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 09:21:34,229 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 09:21:34,229 INFO L122 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 [2018-12-08 09:21:34,229 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 09:21:34,229 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 09:21:34,229 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 09:21:34,229 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 09:21:34,229 INFO L207 nArgumentSynthesizer]: 3 template conjuncts. [2018-12-08 09:21:34,230 INFO L402 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2018-12-08 09:21:34,230 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 09:21:34,231 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 09:21:34,231 INFO L122 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 [2018-12-08 09:21:34,231 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 09:21:34,231 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 09:21:34,232 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 09:21:34,232 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 09:21:34,232 INFO L207 nArgumentSynthesizer]: 3 template conjuncts. [2018-12-08 09:21:34,232 INFO L402 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2018-12-08 09:21:34,232 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 09:21:34,233 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 09:21:34,233 INFO L122 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 [2018-12-08 09:21:34,233 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 09:21:34,233 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 09:21:34,233 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 09:21:34,234 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 09:21:34,234 INFO L207 nArgumentSynthesizer]: 3 template conjuncts. [2018-12-08 09:21:34,234 INFO L402 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2018-12-08 09:21:34,234 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 09:21:34,240 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-08 09:21:34,246 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2018-12-08 09:21:34,246 INFO L444 ModelExtractionUtils]: 1 out of 7 variables were initially zero. Simplification set additionally 2 variables to zero. [2018-12-08 09:21:34,248 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-08 09:21:34,248 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-08 09:21:34,248 INFO L518 LassoAnalysis]: Proved termination. [2018-12-08 09:21:34,248 INFO L520 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 [] [2018-12-08 09:21:34,249 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-08 09:21:34,267 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 09:21:34,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 09:21:34,277 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 09:21:34,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 09:21:34,289 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 09:21:34,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 09:21:34,337 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 [2018-12-08 09:21:34,337 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states. Second operand 4 states. [2018-12-08 09:21:34,465 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. [2018-12-08 09:21:34,465 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 [2018-12-08 09:21:34,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-12-08 09:21:34,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2018-12-08 09:21:34,468 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 3 letters. Loop has 3 letters. [2018-12-08 09:21:34,469 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 09:21:34,469 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 6 letters. Loop has 3 letters. [2018-12-08 09:21:34,469 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 09:21:34,470 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 3 letters. Loop has 6 letters. [2018-12-08 09:21:34,470 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 09:21:34,470 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 47 states and 59 transitions. [2018-12-08 09:21:34,473 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-12-08 09:21:34,475 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 47 states to 20 states and 23 transitions. [2018-12-08 09:21:34,476 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2018-12-08 09:21:34,476 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2018-12-08 09:21:34,477 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 23 transitions. [2018-12-08 09:21:34,477 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-08 09:21:34,477 INFO L705 BuchiCegarLoop]: Abstraction has 20 states and 23 transitions. [2018-12-08 09:21:34,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states and 23 transitions. [2018-12-08 09:21:34,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 13. [2018-12-08 09:21:34,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-12-08 09:21:34,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2018-12-08 09:21:34,495 INFO L728 BuchiCegarLoop]: Abstraction has 13 states and 16 transitions. [2018-12-08 09:21:34,495 INFO L608 BuchiCegarLoop]: Abstraction has 13 states and 16 transitions. [2018-12-08 09:21:34,495 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-12-08 09:21:34,495 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 16 transitions. [2018-12-08 09:21:34,495 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-12-08 09:21:34,495 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-08 09:21:34,496 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-08 09:21:34,496 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2018-12-08 09:21:34,496 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-12-08 09:21:34,496 INFO L794 eck$LassoCheckResult]: Stem: 126#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~ret5, main_~m~0, main_~n~0, main_~r~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~r~0 := main_#t~nondet4;havoc main_#t~nondet4; 127#L28 assume (main_~m~0 >= 0 && main_~n~0 >= 0) && main_~r~0 >= 0; 123#L29 call main_#t~ret5 := p(main_~m~0, main_~n~0, main_~r~0);< 129#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 131#L13 assume !(~r > 0); 125#L16 [2018-12-08 09:21:34,496 INFO L796 eck$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 [2018-12-08 09:21:34,496 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 09:21:34,497 INFO L82 PathProgramCache]: Analyzing trace with hash 43048962, now seen corresponding path program 1 times [2018-12-08 09:21:34,497 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 09:21:34,497 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 09:21:34,497 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 09:21:34,497 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 09:21:34,498 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 09:21:34,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 09:21:34,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 09:21:34,504 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 09:21:34,505 INFO L82 PathProgramCache]: Analyzing trace with hash 1220476, now seen corresponding path program 1 times [2018-12-08 09:21:34,505 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 09:21:34,505 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 09:21:34,505 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 09:21:34,505 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 09:21:34,505 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 09:21:34,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 09:21:34,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 09:21:34,509 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 09:21:34,509 INFO L82 PathProgramCache]: Analyzing trace with hash -1891526915, now seen corresponding path program 1 times [2018-12-08 09:21:34,510 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 09:21:34,510 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 09:21:34,510 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 09:21:34,510 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 09:21:34,510 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 09:21:34,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 09:21:34,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 09:21:34,579 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 09:21:34,579 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 09:21:34,579 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 09:21:34,579 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 09:21:34,579 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-08 09:21:34,580 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 09:21:34,580 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 09:21:34,580 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 09:21:34,580 INFO L131 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4_true-termination_true-no-overflow.c_Iteration2_Loop [2018-12-08 09:21:34,580 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 09:21:34,580 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 09:21:34,581 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:21:34,582 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:21:34,584 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:21:34,585 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:21:34,589 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:21:34,627 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 09:21:34,627 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f34139a-6840-4123-bc66-112da4a4fa69/bin-2019/uautomizer/z3 Starting monitored process 10 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 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 09:21:34,629 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 09:21:34,629 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 09:21:34,631 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-08 09:21:34,632 INFO L448 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 /tmp/vcloud-vcloud-master/worker/working_dir_0f34139a-6840-4123-bc66-112da4a4fa69/bin-2019/uautomizer/z3 Starting monitored process 11 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 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 09:21:34,646 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 09:21:34,646 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 09:21:34,648 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-08 09:21:34,648 INFO L448 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 /tmp/vcloud-vcloud-master/worker/working_dir_0f34139a-6840-4123-bc66-112da4a4fa69/bin-2019/uautomizer/z3 Starting monitored process 12 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 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 09:21:34,663 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 09:21:34,663 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 09:21:34,665 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-08 09:21:34,665 INFO L448 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 /tmp/vcloud-vcloud-master/worker/working_dir_0f34139a-6840-4123-bc66-112da4a4fa69/bin-2019/uautomizer/z3 Starting monitored process 13 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 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 09:21:34,680 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 09:21:34,680 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f34139a-6840-4123-bc66-112da4a4fa69/bin-2019/uautomizer/z3 Starting monitored process 14 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 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 09:21:34,698 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-08 09:21:34,698 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 09:21:34,973 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-08 09:21:34,974 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 09:21:34,974 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 09:21:34,974 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 09:21:34,974 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 09:21:34,974 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-08 09:21:34,974 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 09:21:34,974 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 09:21:34,974 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 09:21:34,974 INFO L131 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4_true-termination_true-no-overflow.c_Iteration2_Loop [2018-12-08 09:21:34,974 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 09:21:34,975 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 09:21:34,976 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:21:34,977 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:21:34,978 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:21:34,984 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:21:34,985 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:21:35,044 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 09:21:35,044 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-08 09:21:35,044 INFO L122 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 [2018-12-08 09:21:35,045 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 09:21:35,045 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 09:21:35,045 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 09:21:35,045 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 09:21:35,045 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 09:21:35,046 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 09:21:35,046 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 09:21:35,047 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 09:21:35,047 INFO L122 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 [2018-12-08 09:21:35,047 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 09:21:35,048 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 09:21:35,048 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 09:21:35,048 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 09:21:35,048 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 09:21:35,048 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 09:21:35,048 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 09:21:35,049 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 09:21:35,049 INFO L122 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 [2018-12-08 09:21:35,050 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 09:21:35,050 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 09:21:35,050 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 09:21:35,050 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 09:21:35,050 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 09:21:35,050 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 09:21:35,050 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 09:21:35,053 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-08 09:21:35,055 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-08 09:21:35,055 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-12-08 09:21:35,056 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-08 09:21:35,056 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-08 09:21:35,056 INFO L518 LassoAnalysis]: Proved termination. [2018-12-08 09:21:35,056 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(p_~n) = 1*p_~n Supporting invariants [] [2018-12-08 09:21:35,057 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-08 09:21:35,064 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 09:21:35,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 09:21:35,070 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 09:21:35,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 09:21:35,078 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 09:21:35,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 09:21:35,103 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 [2018-12-08 09:21:35,103 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 16 transitions. cyclomatic complexity: 5 Second operand 5 states. [2018-12-08 09:21:35,116 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. [2018-12-08 09:21:35,116 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 [2018-12-08 09:21:35,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-12-08 09:21:35,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 13 transitions. [2018-12-08 09:21:35,117 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 5 letters. Loop has 4 letters. [2018-12-08 09:21:35,117 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 09:21:35,118 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 9 letters. Loop has 4 letters. [2018-12-08 09:21:35,118 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 09:21:35,118 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 5 letters. Loop has 8 letters. [2018-12-08 09:21:35,118 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 09:21:35,118 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 30 transitions. [2018-12-08 09:21:35,119 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-12-08 09:21:35,120 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 20 states and 24 transitions. [2018-12-08 09:21:35,120 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2018-12-08 09:21:35,120 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2018-12-08 09:21:35,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 24 transitions. [2018-12-08 09:21:35,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-08 09:21:35,120 INFO L705 BuchiCegarLoop]: Abstraction has 20 states and 24 transitions. [2018-12-08 09:21:35,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states and 24 transitions. [2018-12-08 09:21:35,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2018-12-08 09:21:35,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-12-08 09:21:35,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2018-12-08 09:21:35,122 INFO L728 BuchiCegarLoop]: Abstraction has 18 states and 22 transitions. [2018-12-08 09:21:35,122 INFO L608 BuchiCegarLoop]: Abstraction has 18 states and 22 transitions. [2018-12-08 09:21:35,122 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-12-08 09:21:35,122 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 22 transitions. [2018-12-08 09:21:35,123 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-12-08 09:21:35,123 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-08 09:21:35,123 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-08 09:21:35,123 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 09:21:35,123 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-12-08 09:21:35,123 INFO L794 eck$LassoCheckResult]: Stem: 227#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~ret5, main_~m~0, main_~n~0, main_~r~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~r~0 := main_#t~nondet4;havoc main_#t~nondet4; 228#L28 assume (main_~m~0 >= 0 && main_~n~0 >= 0) && main_~r~0 >= 0; 222#L29 call main_#t~ret5 := p(main_~m~0, main_~n~0, main_~r~0);< 230#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 232#L13 assume !(~r > 0); 225#L16 assume ~n > 0; 221#L17 call #t~ret1 := p(~r, ~n - 1, ~m);< 224#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 234#L13 assume ~r > 0; 219#L14 [2018-12-08 09:21:35,123 INFO L796 eck$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 [2018-12-08 09:21:35,124 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 09:21:35,124 INFO L82 PathProgramCache]: Analyzing trace with hash -1891526918, now seen corresponding path program 1 times [2018-12-08 09:21:35,124 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 09:21:35,124 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 09:21:35,124 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 09:21:35,125 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 09:21:35,125 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 09:21:35,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 09:21:35,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 09:21:35,134 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 09:21:35,134 INFO L82 PathProgramCache]: Analyzing trace with hash 56702, now seen corresponding path program 2 times [2018-12-08 09:21:35,134 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 09:21:35,134 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 09:21:35,135 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 09:21:35,135 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 09:21:35,135 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 09:21:35,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 09:21:35,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 09:21:35,139 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 09:21:35,139 INFO L82 PathProgramCache]: Analyzing trace with hash -507463707, now seen corresponding path program 1 times [2018-12-08 09:21:35,139 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 09:21:35,139 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 09:21:35,139 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 09:21:35,140 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 09:21:35,140 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 09:21:35,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 09:21:35,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 09:21:35,187 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 09:21:35,187 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 09:21:35,187 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 09:21:35,187 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 09:21:35,187 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-08 09:21:35,187 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 09:21:35,187 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 09:21:35,187 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 09:21:35,187 INFO L131 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4_true-termination_true-no-overflow.c_Iteration3_Loop [2018-12-08 09:21:35,188 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 09:21:35,188 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 09:21:35,189 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:21:35,192 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:21:35,197 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:21:35,198 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:21:35,199 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:21:35,230 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 09:21:35,231 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f34139a-6840-4123-bc66-112da4a4fa69/bin-2019/uautomizer/z3 Starting monitored process 15 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 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 09:21:35,232 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 09:21:35,232 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 09:21:35,235 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-08 09:21:35,235 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_#in~m=1, p_~m=1} Honda state: {p_#in~m=1, p_~m=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f34139a-6840-4123-bc66-112da4a4fa69/bin-2019/uautomizer/z3 Starting monitored process 16 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 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 09:21:35,249 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 09:21:35,250 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f34139a-6840-4123-bc66-112da4a4fa69/bin-2019/uautomizer/z3 Starting monitored process 17 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 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 09:21:35,268 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-08 09:21:35,268 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 09:21:47,288 INFO L450 LassoAnalysis]: Proving nontermination failed: SMT Solver returned 'unknown'. [2018-12-08 09:21:47,290 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 09:21:47,290 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 09:21:47,290 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 09:21:47,290 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 09:21:47,290 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-08 09:21:47,290 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 09:21:47,291 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 09:21:47,291 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 09:21:47,291 INFO L131 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4_true-termination_true-no-overflow.c_Iteration3_Loop [2018-12-08 09:21:47,291 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 09:21:47,291 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 09:21:47,292 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:21:47,295 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:21:47,304 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:21:47,305 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:21:47,306 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:21:47,337 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 09:21:47,337 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-08 09:21:47,338 INFO L122 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 [2018-12-08 09:21:47,338 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 09:21:47,338 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 09:21:47,339 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 09:21:47,339 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 09:21:47,339 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 09:21:47,339 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 09:21:47,340 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 09:21:47,341 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 09:21:47,341 INFO L122 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 [2018-12-08 09:21:47,341 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 09:21:47,341 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 09:21:47,342 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 09:21:47,342 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 09:21:47,342 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 09:21:47,343 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 09:21:47,343 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 09:21:47,345 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 09:21:47,346 INFO L122 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 [2018-12-08 09:21:47,346 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 09:21:47,346 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 09:21:47,347 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 09:21:47,347 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 09:21:47,347 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 09:21:47,347 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 09:21:47,347 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 09:21:47,348 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 09:21:47,348 INFO L122 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 [2018-12-08 09:21:47,348 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 09:21:47,349 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 09:21:47,349 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 09:21:47,349 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 09:21:47,349 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 09:21:47,349 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 09:21:47,349 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 09:21:47,350 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 09:21:47,350 INFO L122 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 [2018-12-08 09:21:47,351 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 09:21:47,351 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 09:21:47,351 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 09:21:47,351 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 09:21:47,351 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 09:21:47,351 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 09:21:47,352 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 09:21:47,352 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 09:21:47,352 INFO L497 LassoAnalysis]: Using template '2-nested'. [2018-12-08 09:21:47,353 INFO L122 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 [2018-12-08 09:21:47,353 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 09:21:47,353 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 09:21:47,353 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 09:21:47,353 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 09:21:47,354 INFO L207 nArgumentSynthesizer]: 3 template conjuncts. [2018-12-08 09:21:47,354 INFO L402 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2018-12-08 09:21:47,354 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 09:21:47,355 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 09:21:47,356 INFO L122 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 [2018-12-08 09:21:47,356 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 09:21:47,356 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 09:21:47,356 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 09:21:47,356 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 09:21:47,356 INFO L207 nArgumentSynthesizer]: 3 template conjuncts. [2018-12-08 09:21:47,357 INFO L402 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2018-12-08 09:21:47,357 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 09:21:47,362 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-08 09:21:47,367 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2018-12-08 09:21:47,367 INFO L444 ModelExtractionUtils]: 5 out of 11 variables were initially zero. Simplification set additionally 2 variables to zero. [2018-12-08 09:21:47,367 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-08 09:21:47,368 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-08 09:21:47,368 INFO L518 LassoAnalysis]: Proved termination. [2018-12-08 09:21:47,368 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function 2-nested ranking function: f0 = 1*p_~r + 1*p_~n f1 = 1*p_~n Supporting invariants [] [2018-12-08 09:21:47,368 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-08 09:21:47,391 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 09:21:47,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 09:21:47,399 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 09:21:47,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 09:21:47,406 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 09:21:47,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 09:21:47,438 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 [2018-12-08 09:21:47,438 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 22 transitions. cyclomatic complexity: 7 Second operand 4 states. [2018-12-08 09:21:47,489 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. [2018-12-08 09:21:47,489 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 [2018-12-08 09:21:47,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-12-08 09:21:47,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2018-12-08 09:21:47,489 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 9 letters. Loop has 3 letters. [2018-12-08 09:21:47,490 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 09:21:47,490 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 12 letters. Loop has 3 letters. [2018-12-08 09:21:47,490 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 09:21:47,490 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 9 letters. Loop has 6 letters. [2018-12-08 09:21:47,490 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 09:21:47,490 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 42 states and 50 transitions. [2018-12-08 09:21:47,492 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-12-08 09:21:47,493 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 42 states to 36 states and 44 transitions. [2018-12-08 09:21:47,493 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2018-12-08 09:21:47,493 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 19 [2018-12-08 09:21:47,493 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 44 transitions. [2018-12-08 09:21:47,493 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-08 09:21:47,493 INFO L705 BuchiCegarLoop]: Abstraction has 36 states and 44 transitions. [2018-12-08 09:21:47,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states and 44 transitions. [2018-12-08 09:21:47,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 31. [2018-12-08 09:21:47,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-12-08 09:21:47,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 38 transitions. [2018-12-08 09:21:47,496 INFO L728 BuchiCegarLoop]: Abstraction has 31 states and 38 transitions. [2018-12-08 09:21:47,496 INFO L608 BuchiCegarLoop]: Abstraction has 31 states and 38 transitions. [2018-12-08 09:21:47,496 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-12-08 09:21:47,496 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 31 states and 38 transitions. [2018-12-08 09:21:47,497 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-12-08 09:21:47,497 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-08 09:21:47,497 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-08 09:21:47,497 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 09:21:47,497 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-12-08 09:21:47,497 INFO L794 eck$LassoCheckResult]: Stem: 355#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~ret5, main_~m~0, main_~n~0, main_~r~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~r~0 := main_#t~nondet4;havoc main_#t~nondet4; 356#L28 assume (main_~m~0 >= 0 && main_~n~0 >= 0) && main_~r~0 >= 0; 357#L29 call main_#t~ret5 := p(main_~m~0, main_~n~0, main_~r~0);< 360#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 361#L13 assume ~r > 0; 351#L14 call #t~ret0 := p(~m, ~r - 1, ~n);< 358#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 375#L13 assume !(~r > 0); 353#L16 assume ~n > 0; 350#L17 call #t~ret1 := p(~r, ~n - 1, ~m);< 352#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 365#L13 assume ~r > 0; 349#L14 [2018-12-08 09:21:47,498 INFO L796 eck$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 [2018-12-08 09:21:47,498 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 09:21:47,498 INFO L82 PathProgramCache]: Analyzing trace with hash 1683587899, now seen corresponding path program 2 times [2018-12-08 09:21:47,498 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 09:21:47,498 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 09:21:47,499 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 09:21:47,499 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 09:21:47,499 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 09:21:47,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 09:21:47,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 09:21:47,508 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 09:21:47,508 INFO L82 PathProgramCache]: Analyzing trace with hash 56702, now seen corresponding path program 3 times [2018-12-08 09:21:47,509 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 09:21:47,509 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 09:21:47,509 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 09:21:47,509 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 09:21:47,509 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 09:21:47,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 09:21:47,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 09:21:47,513 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 09:21:47,513 INFO L82 PathProgramCache]: Analyzing trace with hash -860956668, now seen corresponding path program 3 times [2018-12-08 09:21:47,513 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 09:21:47,513 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 09:21:47,513 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 09:21:47,513 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 09:21:47,513 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 09:21:47,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 09:21:47,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 09:21:47,567 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 09:21:47,567 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 09:21:47,567 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 09:21:47,567 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 09:21:47,567 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-08 09:21:47,567 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 09:21:47,567 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 09:21:47,567 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 09:21:47,567 INFO L131 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4_true-termination_true-no-overflow.c_Iteration4_Loop [2018-12-08 09:21:47,567 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 09:21:47,567 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 09:21:47,568 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:21:47,573 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:21:47,574 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:21:47,575 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:21:47,578 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:21:47,604 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 09:21:47,605 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f34139a-6840-4123-bc66-112da4a4fa69/bin-2019/uautomizer/z3 Starting monitored process 18 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 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 09:21:47,606 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 09:21:47,606 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f34139a-6840-4123-bc66-112da4a4fa69/bin-2019/uautomizer/z3 Starting monitored process 19 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 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 09:21:47,625 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-08 09:21:47,625 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 09:21:59,645 INFO L450 LassoAnalysis]: Proving nontermination failed: SMT Solver returned 'unknown'. [2018-12-08 09:21:59,647 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 09:21:59,647 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 09:21:59,647 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 09:21:59,647 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 09:21:59,647 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-08 09:21:59,647 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 09:21:59,647 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 09:21:59,647 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 09:21:59,647 INFO L131 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4_true-termination_true-no-overflow.c_Iteration4_Loop [2018-12-08 09:21:59,647 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 09:21:59,647 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 09:21:59,648 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:21:59,654 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:21:59,655 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:21:59,656 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:21:59,658 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:21:59,687 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 09:21:59,687 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-08 09:21:59,687 INFO L122 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 [2018-12-08 09:21:59,687 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 09:21:59,687 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 09:21:59,687 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 09:21:59,688 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 09:21:59,688 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 09:21:59,688 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 09:21:59,688 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 09:21:59,691 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 09:21:59,691 INFO L122 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 [2018-12-08 09:21:59,692 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 09:21:59,692 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 09:21:59,692 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 09:21:59,692 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 09:21:59,692 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 09:21:59,692 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 09:21:59,693 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 09:21:59,693 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 09:21:59,693 INFO L122 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 [2018-12-08 09:21:59,694 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 09:21:59,694 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 09:21:59,694 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 09:21:59,694 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 09:21:59,694 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 09:21:59,694 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 09:21:59,694 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 09:21:59,695 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 09:21:59,695 INFO L122 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 [2018-12-08 09:21:59,695 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 09:21:59,695 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 09:21:59,695 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 09:21:59,696 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 09:21:59,696 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 09:21:59,696 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 09:21:59,696 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 09:21:59,696 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 09:21:59,697 INFO L122 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 [2018-12-08 09:21:59,697 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 09:21:59,697 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 09:21:59,697 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 09:21:59,697 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 09:21:59,697 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 09:21:59,698 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 09:21:59,698 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 09:21:59,698 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 09:21:59,698 INFO L497 LassoAnalysis]: Using template '2-nested'. [2018-12-08 09:21:59,698 INFO L122 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 [2018-12-08 09:21:59,699 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 09:21:59,699 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 09:21:59,699 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 09:21:59,699 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 09:21:59,699 INFO L207 nArgumentSynthesizer]: 3 template conjuncts. [2018-12-08 09:21:59,700 INFO L402 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2018-12-08 09:21:59,700 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 09:21:59,705 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-08 09:21:59,710 INFO L443 ModelExtractionUtils]: Simplification made 6 calls to the SMT solver. [2018-12-08 09:21:59,710 INFO L444 ModelExtractionUtils]: 5 out of 11 variables were initially zero. Simplification set additionally 2 variables to zero. [2018-12-08 09:21:59,710 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-08 09:21:59,711 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-08 09:21:59,711 INFO L518 LassoAnalysis]: Proved termination. [2018-12-08 09:21:59,711 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function 2-nested ranking function: f0 = 1*p_~n + 1*p_~r f1 = 1*p_~n Supporting invariants [] [2018-12-08 09:21:59,711 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-08 09:21:59,724 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 09:21:59,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 09:21:59,735 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 09:21:59,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 09:21:59,742 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 09:21:59,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 09:21:59,781 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 [2018-12-08 09:21:59,781 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 38 transitions. cyclomatic complexity: 12 Second operand 4 states. [2018-12-08 09:21:59,831 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. [2018-12-08 09:21:59,831 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 [2018-12-08 09:21:59,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-12-08 09:21:59,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2018-12-08 09:21:59,832 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 12 letters. Loop has 3 letters. [2018-12-08 09:21:59,832 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 09:21:59,832 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-12-08 09:21:59,842 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 09:21:59,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 09:21:59,852 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 09:21:59,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 09:21:59,858 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 09:21:59,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 09:21:59,885 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 [2018-12-08 09:21:59,885 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 38 transitions. cyclomatic complexity: 12 Second operand 4 states. [2018-12-08 09:21:59,951 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. [2018-12-08 09:21:59,952 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 [2018-12-08 09:21:59,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-12-08 09:21:59,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2018-12-08 09:21:59,952 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 12 letters. Loop has 3 letters. [2018-12-08 09:21:59,952 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 09:21:59,952 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-12-08 09:21:59,975 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 09:21:59,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 09:21:59,987 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 09:21:59,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 09:21:59,994 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 09:22:00,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 09:22:00,027 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 [2018-12-08 09:22:00,027 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 38 transitions. cyclomatic complexity: 12 Second operand 4 states. [2018-12-08 09:22:00,088 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. [2018-12-08 09:22:00,088 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 [2018-12-08 09:22:00,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-12-08 09:22:00,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2018-12-08 09:22:00,089 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 12 letters. Loop has 3 letters. [2018-12-08 09:22:00,089 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 09:22:00,089 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 15 letters. Loop has 3 letters. [2018-12-08 09:22:00,089 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 09:22:00,089 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 12 letters. Loop has 6 letters. [2018-12-08 09:22:00,089 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 09:22:00,089 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 53 states and 68 transitions. [2018-12-08 09:22:00,091 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2018-12-08 09:22:00,091 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 53 states to 41 states and 51 transitions. [2018-12-08 09:22:00,091 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 19 [2018-12-08 09:22:00,092 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 21 [2018-12-08 09:22:00,092 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 51 transitions. [2018-12-08 09:22:00,092 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-08 09:22:00,092 INFO L705 BuchiCegarLoop]: Abstraction has 41 states and 51 transitions. [2018-12-08 09:22:00,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states and 51 transitions. [2018-12-08 09:22:00,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 24. [2018-12-08 09:22:00,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-12-08 09:22:00,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 30 transitions. [2018-12-08 09:22:00,094 INFO L728 BuchiCegarLoop]: Abstraction has 24 states and 30 transitions. [2018-12-08 09:22:00,094 INFO L608 BuchiCegarLoop]: Abstraction has 24 states and 30 transitions. [2018-12-08 09:22:00,094 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-12-08 09:22:00,094 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 30 transitions. [2018-12-08 09:22:00,094 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2018-12-08 09:22:00,095 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-08 09:22:00,095 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-08 09:22:00,095 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 09:22:00,095 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1] [2018-12-08 09:22:00,095 INFO L794 eck$LassoCheckResult]: Stem: 724#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~ret5, main_~m~0, main_~n~0, main_~r~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~r~0 := main_#t~nondet4;havoc main_#t~nondet4; 725#L28 assume (main_~m~0 >= 0 && main_~n~0 >= 0) && main_~r~0 >= 0; 723#L29 call main_#t~ret5 := p(main_~m~0, main_~n~0, main_~r~0);< 732#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 733#L13 assume !(~r > 0); 726#L16 assume ~n > 0; 720#L17 call #t~ret1 := p(~r, ~n - 1, ~m);< 721#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 734#L13 assume ~r > 0; 718#L14 [2018-12-08 09:22:00,095 INFO L796 eck$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 [2018-12-08 09:22:00,095 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 09:22:00,095 INFO L82 PathProgramCache]: Analyzing trace with hash -1891526918, now seen corresponding path program 2 times [2018-12-08 09:22:00,095 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 09:22:00,096 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 09:22:00,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 09:22:00,096 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 09:22:00,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 09:22:00,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 09:22:00,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 09:22:00,102 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 09:22:00,102 INFO L82 PathProgramCache]: Analyzing trace with hash 828947705, now seen corresponding path program 1 times [2018-12-08 09:22:00,102 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 09:22:00,103 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 09:22:00,103 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 09:22:00,103 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 09:22:00,103 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 09:22:00,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 09:22:00,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 09:22:00,107 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 09:22:00,107 INFO L82 PathProgramCache]: Analyzing trace with hash 559352800, now seen corresponding path program 4 times [2018-12-08 09:22:00,107 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 09:22:00,108 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 09:22:00,108 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 09:22:00,108 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 09:22:00,108 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 09:22:00,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 09:22:00,153 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-12-08 09:22:00,154 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 09:22:00,155 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f34139a-6840-4123-bc66-112da4a4fa69/bin-2019/uautomizer/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-08 09:22:00,160 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-08 09:22:00,167 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-08 09:22:00,167 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-08 09:22:00,168 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 09:22:00,171 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-12-08 09:22:00,186 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-08 09:22:00,186 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-12-08 09:22:00,298 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 09:22:00,298 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 09:22:00,299 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 09:22:00,299 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 09:22:00,299 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-08 09:22:00,299 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 09:22:00,299 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 09:22:00,299 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 09:22:00,299 INFO L131 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4_true-termination_true-no-overflow.c_Iteration5_Loop [2018-12-08 09:22:00,299 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 09:22:00,299 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 09:22:00,300 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:22:00,301 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:22:00,302 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:22:00,303 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:22:00,349 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 09:22:00,349 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f34139a-6840-4123-bc66-112da4a4fa69/bin-2019/uautomizer/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 [2018-12-08 09:22:00,351 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 09:22:00,351 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 09:22:00,353 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-08 09:22:00,353 INFO L448 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 /tmp/vcloud-vcloud-master/worker/working_dir_0f34139a-6840-4123-bc66-112da4a4fa69/bin-2019/uautomizer/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 [2018-12-08 09:22:00,367 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 09:22:00,367 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 09:22:00,369 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-08 09:22:00,369 INFO L448 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 /tmp/vcloud-vcloud-master/worker/working_dir_0f34139a-6840-4123-bc66-112da4a4fa69/bin-2019/uautomizer/z3 Starting monitored process 23 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 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 09:22:00,384 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 09:22:00,384 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 09:22:00,386 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-08 09:22:00,386 INFO L448 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 /tmp/vcloud-vcloud-master/worker/working_dir_0f34139a-6840-4123-bc66-112da4a4fa69/bin-2019/uautomizer/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 [2018-12-08 09:22:00,400 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 09:22:00,400 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f34139a-6840-4123-bc66-112da4a4fa69/bin-2019/uautomizer/z3 Starting monitored process 25 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 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 09:22:00,419 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-08 09:22:00,420 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 09:22:06,484 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-08 09:22:06,487 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 09:22:06,487 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 09:22:06,487 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 09:22:06,487 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 09:22:06,487 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-08 09:22:06,487 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 09:22:06,487 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 09:22:06,487 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 09:22:06,487 INFO L131 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4_true-termination_true-no-overflow.c_Iteration5_Loop [2018-12-08 09:22:06,487 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 09:22:06,487 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 09:22:06,488 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:22:06,490 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:22:06,491 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:22:06,492 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:22:06,564 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 09:22:06,564 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-08 09:22:06,565 INFO L122 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 [2018-12-08 09:22:06,565 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 09:22:06,565 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 09:22:06,565 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 09:22:06,565 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 09:22:06,565 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 09:22:06,565 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 09:22:06,566 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 09:22:06,566 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 09:22:06,566 INFO L122 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 [2018-12-08 09:22:06,566 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 09:22:06,566 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 09:22:06,566 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 09:22:06,566 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 09:22:06,566 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 09:22:06,567 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 09:22:06,567 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 09:22:06,567 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 09:22:06,567 INFO L122 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 [2018-12-08 09:22:06,567 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 09:22:06,567 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 09:22:06,568 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 09:22:06,568 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 09:22:06,568 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 09:22:06,568 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 09:22:06,568 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 09:22:06,568 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 09:22:06,568 INFO L122 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 [2018-12-08 09:22:06,568 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 09:22:06,569 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 09:22:06,569 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 09:22:06,569 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 09:22:06,569 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 09:22:06,569 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 09:22:06,569 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 09:22:06,573 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-08 09:22:06,575 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-08 09:22:06,575 INFO L444 ModelExtractionUtils]: 5 out of 8 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-12-08 09:22:06,576 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-08 09:22:06,576 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-08 09:22:06,576 INFO L518 LassoAnalysis]: Proved termination. [2018-12-08 09:22:06,576 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(p_~m) = 1*p_~m Supporting invariants [] [2018-12-08 09:22:06,576 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-08 09:22:06,593 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 09:22:06,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 09:22:06,602 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 09:22:06,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 09:22:06,613 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 09:22:06,651 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 09:22:06,651 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 [2018-12-08 09:22:06,651 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 30 transitions. cyclomatic complexity: 9 Second operand 7 states. [2018-12-08 09:22:06,695 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. [2018-12-08 09:22:06,695 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 [2018-12-08 09:22:06,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-12-08 09:22:06,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 20 transitions. [2018-12-08 09:22:06,696 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 20 transitions. Stem has 9 letters. Loop has 7 letters. [2018-12-08 09:22:06,696 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 09:22:06,696 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 20 transitions. Stem has 16 letters. Loop has 7 letters. [2018-12-08 09:22:06,696 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 09:22:06,697 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 20 transitions. Stem has 9 letters. Loop has 14 letters. [2018-12-08 09:22:06,697 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 09:22:06,697 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 104 states and 131 transitions. [2018-12-08 09:22:06,699 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2018-12-08 09:22:06,700 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 104 states to 104 states and 131 transitions. [2018-12-08 09:22:06,700 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 31 [2018-12-08 09:22:06,700 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 32 [2018-12-08 09:22:06,700 INFO L73 IsDeterministic]: Start isDeterministic. Operand 104 states and 131 transitions. [2018-12-08 09:22:06,700 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-08 09:22:06,701 INFO L705 BuchiCegarLoop]: Abstraction has 104 states and 131 transitions. [2018-12-08 09:22:06,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states and 131 transitions. [2018-12-08 09:22:06,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 59. [2018-12-08 09:22:06,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-12-08 09:22:06,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 79 transitions. [2018-12-08 09:22:06,704 INFO L728 BuchiCegarLoop]: Abstraction has 59 states and 79 transitions. [2018-12-08 09:22:06,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-08 09:22:06,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-12-08 09:22:06,707 INFO L87 Difference]: Start difference. First operand 59 states and 79 transitions. Second operand 6 states. [2018-12-08 09:22:06,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 09:22:06,742 INFO L93 Difference]: Finished difference Result 79 states and 95 transitions. [2018-12-08 09:22:06,742 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-08 09:22:06,742 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 79 states and 95 transitions. [2018-12-08 09:22:06,743 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2018-12-08 09:22:06,744 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 79 states to 37 states and 43 transitions. [2018-12-08 09:22:06,744 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20 [2018-12-08 09:22:06,744 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 23 [2018-12-08 09:22:06,744 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 43 transitions. [2018-12-08 09:22:06,744 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-08 09:22:06,744 INFO L705 BuchiCegarLoop]: Abstraction has 37 states and 43 transitions. [2018-12-08 09:22:06,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states and 43 transitions. [2018-12-08 09:22:06,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 24. [2018-12-08 09:22:06,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-12-08 09:22:06,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2018-12-08 09:22:06,745 INFO L728 BuchiCegarLoop]: Abstraction has 24 states and 28 transitions. [2018-12-08 09:22:06,746 INFO L608 BuchiCegarLoop]: Abstraction has 24 states and 28 transitions. [2018-12-08 09:22:06,746 INFO L442 BuchiCegarLoop]: ======== Iteration 6============ [2018-12-08 09:22:06,746 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 28 transitions. [2018-12-08 09:22:06,746 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-12-08 09:22:06,746 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-08 09:22:06,746 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-08 09:22:06,746 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 09:22:06,746 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-12-08 09:22:06,747 INFO L794 eck$LassoCheckResult]: Stem: 1150#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~ret5, main_~m~0, main_~n~0, main_~r~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~r~0 := main_#t~nondet4;havoc main_#t~nondet4; 1151#L28 assume (main_~m~0 >= 0 && main_~n~0 >= 0) && main_~r~0 >= 0; 1152#L29 call main_#t~ret5 := p(main_~m~0, main_~n~0, main_~r~0);< 1157#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 1163#L13 assume !(~r > 0); 1162#L16 assume ~n > 0; 1153#L17 call #t~ret1 := p(~r, ~n - 1, ~m);< 1161#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 1160#L13 assume ~r > 0; 1144#L14 call #t~ret0 := p(~m, ~r - 1, ~n);< 1142#pENTRY [2018-12-08 09:22:06,747 INFO L796 eck$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 [2018-12-08 09:22:06,747 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 09:22:06,747 INFO L82 PathProgramCache]: Analyzing trace with hash 1492207714, now seen corresponding path program 5 times [2018-12-08 09:22:06,747 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 09:22:06,747 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 09:22:06,747 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 09:22:06,747 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 09:22:06,748 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 09:22:06,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 09:22:06,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 09:22:06,752 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 09:22:06,753 INFO L82 PathProgramCache]: Analyzing trace with hash 929596, now seen corresponding path program 2 times [2018-12-08 09:22:06,753 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 09:22:06,753 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 09:22:06,753 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 09:22:06,753 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 09:22:06,753 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 09:22:06,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 09:22:06,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 09:22:06,756 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 09:22:06,756 INFO L82 PathProgramCache]: Analyzing trace with hash 1953652509, now seen corresponding path program 6 times [2018-12-08 09:22:06,756 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 09:22:06,756 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 09:22:06,756 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 09:22:06,756 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 09:22:06,756 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 09:22:06,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 09:22:06,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 09:22:06,795 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 09:22:06,795 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 09:22:06,795 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 09:22:06,795 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 09:22:06,795 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-08 09:22:06,795 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 09:22:06,795 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 09:22:06,796 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 09:22:06,796 INFO L131 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4_true-termination_true-no-overflow.c_Iteration6_Loop [2018-12-08 09:22:06,796 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 09:22:06,796 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 09:22:06,796 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:22:06,797 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:22:06,798 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:22:06,804 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:22:06,807 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:22:06,808 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:22:06,809 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:22:06,810 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:22:06,838 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 09:22:06,838 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f34139a-6840-4123-bc66-112da4a4fa69/bin-2019/uautomizer/z3 Starting monitored process 26 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 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 09:22:06,840 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 09:22:06,840 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 09:22:06,842 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-08 09:22:06,842 INFO L448 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 /tmp/vcloud-vcloud-master/worker/working_dir_0f34139a-6840-4123-bc66-112da4a4fa69/bin-2019/uautomizer/z3 Starting monitored process 27 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 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 09:22:06,857 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 09:22:06,857 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 09:22:06,859 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-08 09:22:06,859 INFO L448 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 /tmp/vcloud-vcloud-master/worker/working_dir_0f34139a-6840-4123-bc66-112da4a4fa69/bin-2019/uautomizer/z3 Starting monitored process 28 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 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 09:22:06,874 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 09:22:06,874 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f34139a-6840-4123-bc66-112da4a4fa69/bin-2019/uautomizer/z3 Starting monitored process 29 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 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 09:22:06,890 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-08 09:22:06,891 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 09:22:06,906 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-08 09:22:06,907 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 09:22:06,907 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 09:22:06,907 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 09:22:06,907 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 09:22:06,907 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-08 09:22:06,907 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 09:22:06,907 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 09:22:06,907 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 09:22:06,907 INFO L131 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4_true-termination_true-no-overflow.c_Iteration6_Loop [2018-12-08 09:22:06,908 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 09:22:06,908 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 09:22:06,908 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:22:06,909 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:22:06,910 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:22:06,911 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:22:06,916 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:22:06,917 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:22:06,918 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:22:06,919 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:22:06,947 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 09:22:06,947 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-08 09:22:06,947 INFO L122 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 [2018-12-08 09:22:06,948 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 09:22:06,948 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 09:22:06,948 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 09:22:06,948 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 09:22:06,948 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 09:22:06,948 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 09:22:06,948 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 09:22:06,949 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 09:22:06,949 INFO L122 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 [2018-12-08 09:22:06,949 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 09:22:06,949 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 09:22:06,949 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 09:22:06,949 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 09:22:06,950 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 09:22:06,950 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 09:22:06,950 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 09:22:06,950 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 09:22:06,950 INFO L122 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 [2018-12-08 09:22:06,950 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 09:22:06,951 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 09:22:06,951 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 09:22:06,951 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 09:22:06,951 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 09:22:06,951 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 09:22:06,951 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 09:22:06,951 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 09:22:06,951 INFO L122 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 [2018-12-08 09:22:06,952 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 09:22:06,952 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 09:22:06,952 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 09:22:06,952 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 09:22:06,952 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 09:22:06,952 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 09:22:06,952 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 09:22:06,953 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-08 09:22:06,954 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-08 09:22:06,954 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-12-08 09:22:06,954 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-08 09:22:06,954 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-08 09:22:06,954 INFO L518 LassoAnalysis]: Proved termination. [2018-12-08 09:22:06,954 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(p_#in~n) = 1*p_#in~n Supporting invariants [] [2018-12-08 09:22:06,954 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-08 09:22:06,985 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 09:22:06,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 09:22:06,996 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 09:22:07,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 09:22:07,002 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 09:22:07,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 09:22:07,012 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 [2018-12-08 09:22:07,012 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 28 transitions. cyclomatic complexity: 7 Second operand 4 states. [2018-12-08 09:22:07,031 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. [2018-12-08 09:22:07,031 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 [2018-12-08 09:22:07,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-12-08 09:22:07,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2018-12-08 09:22:07,031 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 10 letters. Loop has 4 letters. [2018-12-08 09:22:07,032 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 09:22:07,032 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 14 letters. Loop has 4 letters. [2018-12-08 09:22:07,032 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 09:22:07,032 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 10 letters. Loop has 8 letters. [2018-12-08 09:22:07,032 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 09:22:07,032 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 62 states and 70 transitions. [2018-12-08 09:22:07,033 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-12-08 09:22:07,033 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 62 states to 39 states and 46 transitions. [2018-12-08 09:22:07,033 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2018-12-08 09:22:07,033 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2018-12-08 09:22:07,033 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 46 transitions. [2018-12-08 09:22:07,033 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-08 09:22:07,034 INFO L705 BuchiCegarLoop]: Abstraction has 39 states and 46 transitions. [2018-12-08 09:22:07,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states and 46 transitions. [2018-12-08 09:22:07,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 24. [2018-12-08 09:22:07,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-12-08 09:22:07,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2018-12-08 09:22:07,035 INFO L728 BuchiCegarLoop]: Abstraction has 24 states and 27 transitions. [2018-12-08 09:22:07,035 INFO L608 BuchiCegarLoop]: Abstraction has 24 states and 27 transitions. [2018-12-08 09:22:07,035 INFO L442 BuchiCegarLoop]: ======== Iteration 7============ [2018-12-08 09:22:07,035 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 27 transitions. [2018-12-08 09:22:07,035 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-12-08 09:22:07,035 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-08 09:22:07,035 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-08 09:22:07,035 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2018-12-08 09:22:07,035 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-12-08 09:22:07,036 INFO L794 eck$LassoCheckResult]: Stem: 1308#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~ret5, main_~m~0, main_~n~0, main_~r~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~r~0 := main_#t~nondet4;havoc main_#t~nondet4; 1309#L28 assume (main_~m~0 >= 0 && main_~n~0 >= 0) && main_~r~0 >= 0; 1312#L29 call main_#t~ret5 := p(main_~m~0, main_~n~0, main_~r~0);< 1319#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 1320#L13 assume !(~r > 0); 1321#L16 assume ~n > 0; 1314#L17 call #t~ret1 := p(~r, ~n - 1, ~m);< 1323#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 1322#L13 assume ~r > 0; 1313#L14 call #t~ret0 := p(~m, ~r - 1, ~n);< 1307#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 1318#L13 assume ~r > 0; 1303#L14 call #t~ret0 := p(~m, ~r - 1, ~n);< 1304#pENTRY [2018-12-08 09:22:07,036 INFO L796 eck$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 [2018-12-08 09:22:07,036 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 09:22:07,036 INFO L82 PathProgramCache]: Analyzing trace with hash 1448494295, now seen corresponding path program 7 times [2018-12-08 09:22:07,036 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 09:22:07,036 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 09:22:07,036 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 09:22:07,036 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 09:22:07,036 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 09:22:07,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 09:22:07,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 09:22:07,042 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 09:22:07,042 INFO L82 PathProgramCache]: Analyzing trace with hash 929596, now seen corresponding path program 3 times [2018-12-08 09:22:07,042 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 09:22:07,043 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 09:22:07,043 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 09:22:07,043 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 09:22:07,043 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 09:22:07,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 09:22:07,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 09:22:07,046 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 09:22:07,046 INFO L82 PathProgramCache]: Analyzing trace with hash 90839314, now seen corresponding path program 8 times [2018-12-08 09:22:07,046 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 09:22:07,046 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 09:22:07,046 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 09:22:07,046 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 09:22:07,046 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 09:22:07,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 09:22:07,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 09:22:07,078 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 09:22:07,078 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 09:22:07,078 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 09:22:07,078 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 09:22:07,078 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-08 09:22:07,078 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 09:22:07,078 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 09:22:07,078 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 09:22:07,078 INFO L131 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4_true-termination_true-no-overflow.c_Iteration7_Loop [2018-12-08 09:22:07,078 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 09:22:07,078 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 09:22:07,079 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:22:07,080 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:22:07,087 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:22:07,088 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:22:07,089 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:22:07,092 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:22:07,092 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:22:07,093 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:22:07,114 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 09:22:07,115 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f34139a-6840-4123-bc66-112da4a4fa69/bin-2019/uautomizer/z3 Starting monitored process 30 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 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 09:22:07,116 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 09:22:07,117 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 09:22:07,119 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-08 09:22:07,119 INFO L448 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 /tmp/vcloud-vcloud-master/worker/working_dir_0f34139a-6840-4123-bc66-112da4a4fa69/bin-2019/uautomizer/z3 Starting monitored process 31 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 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 09:22:07,142 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 09:22:07,143 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 09:22:07,146 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-08 09:22:07,146 INFO L448 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 /tmp/vcloud-vcloud-master/worker/working_dir_0f34139a-6840-4123-bc66-112da4a4fa69/bin-2019/uautomizer/z3 Starting monitored process 32 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 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 09:22:07,161 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 09:22:07,161 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 09:22:07,163 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-08 09:22:07,163 INFO L448 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 /tmp/vcloud-vcloud-master/worker/working_dir_0f34139a-6840-4123-bc66-112da4a4fa69/bin-2019/uautomizer/z3 Starting monitored process 33 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 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 09:22:07,178 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 09:22:07,178 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 09:22:07,180 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-08 09:22:07,180 INFO L448 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 /tmp/vcloud-vcloud-master/worker/working_dir_0f34139a-6840-4123-bc66-112da4a4fa69/bin-2019/uautomizer/z3 Starting monitored process 34 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 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 09:22:07,195 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 09:22:07,195 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f34139a-6840-4123-bc66-112da4a4fa69/bin-2019/uautomizer/z3 Starting monitored process 35 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 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 09:22:07,211 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-08 09:22:07,211 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 09:22:07,228 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-08 09:22:07,230 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 09:22:07,230 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 09:22:07,230 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 09:22:07,230 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 09:22:07,230 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-08 09:22:07,230 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 09:22:07,230 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 09:22:07,230 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 09:22:07,230 INFO L131 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4_true-termination_true-no-overflow.c_Iteration7_Loop [2018-12-08 09:22:07,230 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 09:22:07,230 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 09:22:07,230 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:22:07,232 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:22:07,235 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:22:07,235 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:22:07,238 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:22:07,239 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:22:07,239 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:22:07,240 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:22:07,264 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 09:22:07,264 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-08 09:22:07,264 INFO L122 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 [2018-12-08 09:22:07,265 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 09:22:07,265 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 09:22:07,265 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 09:22:07,265 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 09:22:07,265 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 09:22:07,265 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 09:22:07,265 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 09:22:07,265 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 09:22:07,265 INFO L122 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 [2018-12-08 09:22:07,266 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 09:22:07,266 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 09:22:07,266 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 09:22:07,266 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 09:22:07,266 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 09:22:07,266 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 09:22:07,266 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 09:22:07,266 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 09:22:07,267 INFO L122 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 [2018-12-08 09:22:07,267 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 09:22:07,267 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 09:22:07,267 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 09:22:07,267 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 09:22:07,267 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 09:22:07,267 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 09:22:07,267 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 09:22:07,268 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 09:22:07,268 INFO L122 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 [2018-12-08 09:22:07,268 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 09:22:07,268 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 09:22:07,268 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 09:22:07,268 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 09:22:07,268 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 09:22:07,268 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 09:22:07,268 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 09:22:07,269 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-08 09:22:07,270 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-08 09:22:07,270 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-12-08 09:22:07,270 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-08 09:22:07,270 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-08 09:22:07,270 INFO L518 LassoAnalysis]: Proved termination. [2018-12-08 09:22:07,270 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(p_#in~n) = 1*p_#in~n Supporting invariants [] [2018-12-08 09:22:07,270 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-08 09:22:07,278 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 09:22:07,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 09:22:07,293 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 09:22:07,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 09:22:07,300 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 09:22:07,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 09:22:07,310 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 [2018-12-08 09:22:07,310 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 27 transitions. cyclomatic complexity: 6 Second operand 4 states. [2018-12-08 09:22:07,333 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. [2018-12-08 09:22:07,334 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 [2018-12-08 09:22:07,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-12-08 09:22:07,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2018-12-08 09:22:07,334 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 13 letters. Loop has 4 letters. [2018-12-08 09:22:07,334 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 09:22:07,334 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-12-08 09:22:07,340 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 09:22:07,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 09:22:07,352 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 09:22:07,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 09:22:07,357 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 09:22:07,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 09:22:07,365 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 [2018-12-08 09:22:07,365 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 27 transitions. cyclomatic complexity: 6 Second operand 4 states. [2018-12-08 09:22:07,386 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. [2018-12-08 09:22:07,386 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 [2018-12-08 09:22:07,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-12-08 09:22:07,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2018-12-08 09:22:07,386 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 13 letters. Loop has 4 letters. [2018-12-08 09:22:07,386 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 09:22:07,386 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-12-08 09:22:07,397 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 09:22:07,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 09:22:07,411 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 09:22:07,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 09:22:07,417 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 09:22:07,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 09:22:07,426 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 [2018-12-08 09:22:07,426 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 27 transitions. cyclomatic complexity: 6 Second operand 4 states. [2018-12-08 09:22:07,451 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. [2018-12-08 09:22:07,451 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 [2018-12-08 09:22:07,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-12-08 09:22:07,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2018-12-08 09:22:07,452 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 13 letters. Loop has 4 letters. [2018-12-08 09:22:07,452 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 09:22:07,452 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 17 letters. Loop has 4 letters. [2018-12-08 09:22:07,452 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 09:22:07,452 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 13 letters. Loop has 8 letters. [2018-12-08 09:22:07,452 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 09:22:07,452 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 48 states and 53 transitions. [2018-12-08 09:22:07,453 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-12-08 09:22:07,453 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 48 states to 0 states and 0 transitions. [2018-12-08 09:22:07,453 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-12-08 09:22:07,453 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-12-08 09:22:07,453 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-12-08 09:22:07,453 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-12-08 09:22:07,453 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-08 09:22:07,453 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-08 09:22:07,453 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-08 09:22:07,453 INFO L442 BuchiCegarLoop]: ======== Iteration 8============ [2018-12-08 09:22:07,453 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-12-08 09:22:07,453 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-12-08 09:22:07,453 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-12-08 09:22:07,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 08.12 09:22:07 BoogieIcfgContainer [2018-12-08 09:22:07,458 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-12-08 09:22:07,458 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-08 09:22:07,458 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-08 09:22:07,458 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-08 09:22:07,458 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 09:21:33" (3/4) ... [2018-12-08 09:22:07,460 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-08 09:22:07,460 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-08 09:22:07,461 INFO L168 Benchmark]: Toolchain (without parser) took 34148.32 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 300.4 MB). Free memory was 962.4 MB in the beginning and 1.1 GB in the end (delta: -169.5 MB). Peak memory consumption was 131.0 MB. Max. memory is 11.5 GB. [2018-12-08 09:22:07,462 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 09:22:07,462 INFO L168 Benchmark]: CACSL2BoogieTranslator took 116.04 ms. Allocated memory is still 1.0 GB. Free memory was 962.4 MB in the beginning and 951.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-08 09:22:07,462 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.02 ms. Allocated memory is still 1.0 GB. Free memory is still 951.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 09:22:07,462 INFO L168 Benchmark]: Boogie Preprocessor took 13.74 ms. Allocated memory is still 1.0 GB. Free memory was 951.7 MB in the beginning and 945.3 MB in the end (delta: 6.4 MB). Peak memory consumption was 6.4 MB. Max. memory is 11.5 GB. [2018-12-08 09:22:07,463 INFO L168 Benchmark]: RCFGBuilder took 137.59 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.1 MB). Free memory was 945.3 MB in the beginning and 1.1 GB in the end (delta: -165.6 MB). Peak memory consumption was 13.2 MB. Max. memory is 11.5 GB. [2018-12-08 09:22:07,463 INFO L168 Benchmark]: BuchiAutomizer took 33850.73 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 169.3 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -21.0 MB). Peak memory consumption was 148.3 MB. Max. memory is 11.5 GB. [2018-12-08 09:22:07,463 INFO L168 Benchmark]: Witness Printer took 2.65 ms. Allocated memory is still 1.3 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 09:22:07,465 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 116.04 ms. Allocated memory is still 1.0 GB. Free memory was 962.4 MB in the beginning and 951.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 25.02 ms. Allocated memory is still 1.0 GB. Free memory is still 951.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 13.74 ms. Allocated memory is still 1.0 GB. Free memory was 951.7 MB in the beginning and 945.3 MB in the end (delta: 6.4 MB). Peak memory consumption was 6.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 137.59 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.1 MB). Free memory was 945.3 MB in the beginning and 1.1 GB in the end (delta: -165.6 MB). Peak memory consumption was 13.2 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 33850.73 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 169.3 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -21.0 MB). Peak memory consumption was 148.3 MB. Max. memory is 11.5 GB. * Witness Printer took 2.65 ms. Allocated memory is still 1.3 GB. Free memory is still 1.1 GB. 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 33.8s and 8 iterations. TraceHistogramMax:3. Analysis of lassos took 32.5s. Construction of modules took 0.1s. Büchi inclusion checks took 1.0s. 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, 0.1s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT6 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital23 mio100 ax100 hnf99 lsp72 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq183 hnf89 smp100 dnf100 smp100 tf107 neg100 sie103 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 2ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 3 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 19 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 2 LassoNonterminationAnalysisTime: 30.6s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...