./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex4.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 30f4e4ab Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex4.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 554582d6fc3de8e87f5dd30e5019302b6e1b96be ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-30f4e4a [2019-11-28 02:57:33,931 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 02:57:33,936 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 02:57:33,952 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 02:57:33,953 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 02:57:33,955 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 02:57:33,957 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 02:57:33,968 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 02:57:33,972 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 02:57:33,973 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 02:57:33,975 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 02:57:33,976 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 02:57:33,978 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 02:57:33,981 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 02:57:33,984 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 02:57:33,985 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 02:57:33,987 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 02:57:33,991 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 02:57:33,994 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 02:57:33,999 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 02:57:34,001 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 02:57:34,004 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 02:57:34,006 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 02:57:34,009 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 02:57:34,012 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 02:57:34,013 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 02:57:34,014 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 02:57:34,016 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 02:57:34,016 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 02:57:34,018 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 02:57:34,018 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 02:57:34,019 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 02:57:34,020 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 02:57:34,021 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 02:57:34,023 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 02:57:34,024 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 02:57:34,025 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 02:57:34,025 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 02:57:34,025 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 02:57:34,028 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 02:57:34,029 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 02:57:34,030 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-11-28 02:57:34,055 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 02:57:34,055 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 02:57:34,058 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 02:57:34,058 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 02:57:34,058 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 02:57:34,059 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-28 02:57:34,059 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-28 02:57:34,059 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-28 02:57:34,059 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-28 02:57:34,060 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-28 02:57:34,061 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-28 02:57:34,061 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 02:57:34,062 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-28 02:57:34,062 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 02:57:34,062 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 02:57:34,063 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-28 02:57:34,063 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-28 02:57:34,063 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-28 02:57:34,064 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 02:57:34,064 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-28 02:57:34,064 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 02:57:34,064 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-28 02:57:34,065 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 02:57:34,065 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 02:57:34,065 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-28 02:57:34,066 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 02:57:34,066 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 02:57:34,066 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-28 02:57:34,067 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-28 02:57:34,067 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 554582d6fc3de8e87f5dd30e5019302b6e1b96be [2019-11-28 02:57:34,381 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 02:57:34,403 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 02:57:34,407 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 02:57:34,408 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 02:57:34,409 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 02:57:34,411 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex4.c [2019-11-28 02:57:34,480 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b0cab8f5/fb309c37527f4ee393adaf5561a0b020/FLAG61f62cd70 [2019-11-28 02:57:34,934 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 02:57:34,936 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex4.c [2019-11-28 02:57:34,943 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b0cab8f5/fb309c37527f4ee393adaf5561a0b020/FLAG61f62cd70 [2019-11-28 02:57:35,358 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b0cab8f5/fb309c37527f4ee393adaf5561a0b020 [2019-11-28 02:57:35,362 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 02:57:35,364 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 02:57:35,365 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 02:57:35,365 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 02:57:35,369 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 02:57:35,370 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:57:35" (1/1) ... [2019-11-28 02:57:35,373 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e00e37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:35, skipping insertion in model container [2019-11-28 02:57:35,374 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:57:35" (1/1) ... [2019-11-28 02:57:35,382 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 02:57:35,405 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 02:57:35,630 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 02:57:35,635 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 02:57:35,652 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 02:57:35,668 INFO L208 MainTranslator]: Completed translation [2019-11-28 02:57:35,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:35 WrapperNode [2019-11-28 02:57:35,669 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 02:57:35,670 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 02:57:35,671 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 02:57:35,671 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 02:57:35,681 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:35" (1/1) ... [2019-11-28 02:57:35,687 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:35" (1/1) ... [2019-11-28 02:57:35,769 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 02:57:35,770 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 02:57:35,770 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 02:57:35,770 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 02:57:35,782 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:35" (1/1) ... [2019-11-28 02:57:35,782 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:35" (1/1) ... [2019-11-28 02:57:35,784 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:35" (1/1) ... [2019-11-28 02:57:35,784 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:35" (1/1) ... [2019-11-28 02:57:35,787 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:35" (1/1) ... [2019-11-28 02:57:35,790 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:35" (1/1) ... [2019-11-28 02:57:35,791 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:35" (1/1) ... [2019-11-28 02:57:35,792 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 02:57:35,793 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 02:57:35,793 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 02:57:35,793 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 02:57:35,794 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:35" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:35,863 INFO L130 BoogieDeclarations]: Found specification of procedure p [2019-11-28 02:57:35,863 INFO L138 BoogieDeclarations]: Found implementation of procedure p [2019-11-28 02:57:35,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 02:57:35,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 02:57:36,048 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 02:57:36,049 INFO L297 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-28 02:57:36,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:57:36 BoogieIcfgContainer [2019-11-28 02:57:36,051 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 02:57:36,052 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-28 02:57:36,052 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-28 02:57:36,057 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-28 02:57:36,059 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 02:57:36,059 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 02:57:35" (1/3) ... [2019-11-28 02:57:36,074 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@17413cb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 02:57:36, skipping insertion in model container [2019-11-28 02:57:36,074 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 02:57:36,075 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:35" (2/3) ... [2019-11-28 02:57:36,075 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@17413cb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 02:57:36, skipping insertion in model container [2019-11-28 02:57:36,077 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 02:57:36,078 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:57:36" (3/3) ... [2019-11-28 02:57:36,083 INFO L371 chiAutomizerObserver]: Analyzing ICFG LeeJonesBen-Amram-POPL2001-Ex4.c [2019-11-28 02:57:36,170 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-28 02:57:36,171 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-28 02:57:36,171 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-28 02:57:36,171 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 02:57:36,171 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 02:57:36,171 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-28 02:57:36,172 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 02:57:36,172 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-28 02:57:36,189 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states. [2019-11-28 02:57:36,217 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-11-28 02:57:36,217 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 02:57:36,217 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 02:57:36,224 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-11-28 02:57:36,224 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-28 02:57:36,224 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-28 02:57:36,225 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states. [2019-11-28 02:57:36,227 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-11-28 02:57:36,227 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 02:57:36,227 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 02:57:36,228 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-11-28 02:57:36,228 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-28 02:57:36,235 INFO L794 eck$LassoCheckResult]: Stem: 15#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~ret5, main_~m~0, main_~n~0, main_~r~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~r~0 := main_#t~nondet4;havoc main_#t~nondet4; 7#L28true assume (main_~m~0 >= 0 && main_~n~0 >= 0) && main_~r~0 >= 0; 10#L29true call main_#t~ret5 := p(main_~m~0, main_~n~0, main_~r~0);< 11#pENTRYtrue [2019-11-28 02:57:36,235 INFO L796 eck$LassoCheckResult]: Loop: 11#pENTRYtrue ~m := #in~m;~n := #in~n;~r := #in~r; 12#L13true assume ~r > 0; 9#L14true call #t~ret0 := p(~m, ~r - 1, ~n);< 11#pENTRYtrue [2019-11-28 02:57:36,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:36,241 INFO L82 PathProgramCache]: Analyzing trace with hash 44796, now seen corresponding path program 1 times [2019-11-28 02:57:36,249 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:36,249 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182339771] [2019-11-28 02:57:36,249 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:36,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:36,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:36,350 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:36,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:36,352 INFO L82 PathProgramCache]: Analyzing trace with hash 29912, now seen corresponding path program 1 times [2019-11-28 02:57:36,352 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:36,353 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639321489] [2019-11-28 02:57:36,353 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:36,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:36,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:36,377 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:36,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:36,382 INFO L82 PathProgramCache]: Analyzing trace with hash 1334517757, now seen corresponding path program 1 times [2019-11-28 02:57:36,382 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:36,382 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099953116] [2019-11-28 02:57:36,384 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:36,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:36,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:36,447 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:36,647 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:57:36,649 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:57:36,649 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:57:36,649 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:57:36,650 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 02:57:36,650 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:36,651 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:57:36,651 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:57:36,651 INFO L133 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4.c_Iteration1_Loop [2019-11-28 02:57:36,651 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:57:36,652 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:57:36,679 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:36,686 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:36,689 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:36,692 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:36,701 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:36,706 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:36,710 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:36,723 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:36,797 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:57:36,798 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:36,811 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:36,811 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:36,820 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 02:57:36,821 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_#res=0} Honda state: {p_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:36,830 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:36,831 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 02:57:36,835 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 02:57:36,835 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_#t~ret0=0} Honda state: {p_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:36,845 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:36,846 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:36,850 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 02:57:36,850 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_#t~ret1=0} Honda state: {p_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:36,863 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:36,864 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 02:57:36,868 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 02:57:36,868 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_#in~m=0} Honda state: {p_#in~m=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:36,883 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:36,884 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:36,891 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 02:57:36,891 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_~n=0} Honda state: {p_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:36,909 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:36,910 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:36,915 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 02:57:36,915 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_~m=0} Honda state: {p_~m=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:36,927 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:36,928 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:36,952 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 02:57:36,952 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:39,225 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 02:57:39,228 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:57:39,229 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:57:39,229 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:57:39,229 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:57:39,229 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 02:57:39,229 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:39,229 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:57:39,230 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:57:39,230 INFO L133 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4.c_Iteration1_Loop [2019-11-28 02:57:39,230 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:57:39,230 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:57:39,235 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:39,244 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:39,247 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:39,250 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:39,253 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:39,257 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:39,260 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:39,271 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:39,340 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:57:39,346 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:39,353 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:57:39,355 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:39,355 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:57:39,356 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:39,356 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:39,357 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:57:39,359 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 02:57:39,359 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:39,363 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:39,375 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:57:39,377 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:39,377 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:57:39,378 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:39,378 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:39,378 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:57:39,379 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 02:57:39,379 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:39,400 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:39,411 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:39,414 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:39,414 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:57:39,414 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:39,414 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:39,414 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:57:39,415 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 02:57:39,415 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 02:57:39,420 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:39,435 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:57:39,437 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:39,438 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:57:39,438 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:39,438 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:39,438 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:57:39,439 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 02:57:39,439 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:39,442 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2019-11-28 02:57:39,454 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:57:39,456 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:39,456 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:57:39,456 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:39,456 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:39,457 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:57:39,458 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 02:57:39,458 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 02:57:39,461 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:39,468 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:57:39,470 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:39,471 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:57:39,471 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:39,471 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:39,471 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:57:39,472 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 02:57:39,472 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 02:57:39,474 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:39,494 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:57:39,496 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:39,496 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:57:39,497 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:39,497 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:39,497 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:57:39,499 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 02:57:39,499 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 02:57:39,503 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:39,519 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:57:39,521 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:39,521 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:57:39,521 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:39,522 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:39,522 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:57:39,523 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 02:57:39,523 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:39,526 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-28 02:57:39,528 INFO L489 LassoAnalysis]: Using template '2-nested'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:39,542 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:57:39,545 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:39,545 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:57:39,545 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:39,545 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:39,546 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2019-11-28 02:57:39,547 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2019-11-28 02:57:39,547 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:39,550 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:39,566 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:57:39,569 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:39,569 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:57:39,569 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:39,570 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:39,570 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2019-11-28 02:57:39,571 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2019-11-28 02:57:39,571 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:39,575 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:39,584 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:57:39,586 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:39,586 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:57:39,587 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:39,587 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:39,587 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2019-11-28 02:57:39,589 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2019-11-28 02:57:39,589 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:39,597 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:39,618 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:57:39,620 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:39,621 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:57:39,621 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:39,621 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:39,621 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2019-11-28 02:57:39,623 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2019-11-28 02:57:39,623 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 02:57:39,625 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:39,633 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:57:39,635 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:39,635 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:57:39,636 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:39,636 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:39,636 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2019-11-28 02:57:39,638 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2019-11-28 02:57:39,638 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 02:57:39,641 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:39,661 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:57:39,664 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:39,664 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:57:39,665 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:39,665 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:39,665 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2019-11-28 02:57:39,667 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2019-11-28 02:57:39,667 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:39,670 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:39,683 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:57:39,684 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:39,685 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:57:39,685 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:39,685 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:39,685 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2019-11-28 02:57:39,687 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2019-11-28 02:57:39,687 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 02:57:39,692 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 02:57:39,699 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2019-11-28 02:57:39,700 INFO L444 ModelExtractionUtils]: 2 out of 7 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:39,711 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 02:57:39,712 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 02:57:39,712 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 02:57:39,713 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function 2-nested ranking function: f0 = 1*p_#in~n + 1*p_#in~r f1 = 1*p_#in~r Supporting invariants [] Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:39,726 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-28 02:57:39,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:39,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:39,800 INFO L255 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 02:57:39,803 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:39,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:39,826 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-28 02:57:39,829 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:39,840 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 02:57:39,842 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 02:57:39,848 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 02:57:39,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:57:39,942 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2019-11-28 02:57:39,944 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states. Second operand 4 states. [2019-11-28 02:57:40,186 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states.. Second operand 4 states. Result 47 states and 59 transitions. Complement of second has 12 states. [2019-11-28 02:57:40,187 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-28 02:57:40,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-28 02:57:40,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2019-11-28 02:57:40,194 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 3 letters. Loop has 3 letters. [2019-11-28 02:57:40,196 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:40,196 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 6 letters. Loop has 3 letters. [2019-11-28 02:57:40,196 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:40,196 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 3 letters. Loop has 6 letters. [2019-11-28 02:57:40,197 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:40,198 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 47 states and 59 transitions. [2019-11-28 02:57:40,204 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-11-28 02:57:40,210 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 47 states to 20 states and 23 transitions. [2019-11-28 02:57:40,211 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2019-11-28 02:57:40,212 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2019-11-28 02:57:40,213 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 23 transitions. [2019-11-28 02:57:40,213 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 02:57:40,213 INFO L688 BuchiCegarLoop]: Abstraction has 20 states and 23 transitions. [2019-11-28 02:57:40,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states and 23 transitions. [2019-11-28 02:57:40,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 13. [2019-11-28 02:57:40,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-11-28 02:57:40,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2019-11-28 02:57:40,248 INFO L711 BuchiCegarLoop]: Abstraction has 13 states and 16 transitions. [2019-11-28 02:57:40,248 INFO L591 BuchiCegarLoop]: Abstraction has 13 states and 16 transitions. [2019-11-28 02:57:40,248 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-28 02:57:40,248 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 16 transitions. [2019-11-28 02:57:40,249 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-11-28 02:57:40,249 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 02:57:40,249 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 02:57:40,250 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2019-11-28 02:57:40,250 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-11-28 02:57:40,250 INFO L794 eck$LassoCheckResult]: Stem: 126#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~ret5, main_~m~0, main_~n~0, main_~r~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~r~0 := main_#t~nondet4;havoc main_#t~nondet4; 127#L28 assume (main_~m~0 >= 0 && main_~n~0 >= 0) && main_~r~0 >= 0; 123#L29 call main_#t~ret5 := p(main_~m~0, main_~n~0, main_~r~0);< 129#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 131#L13 assume !(~r > 0); 125#L16 [2019-11-28 02:57:40,251 INFO L796 eck$LassoCheckResult]: Loop: 125#L16 assume ~n > 0; 120#L17 call #t~ret1 := p(~r, ~n - 1, ~m);< 122#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 132#L13 assume !(~r > 0); 125#L16 [2019-11-28 02:57:40,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:40,251 INFO L82 PathProgramCache]: Analyzing trace with hash 43048962, now seen corresponding path program 1 times [2019-11-28 02:57:40,251 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:40,252 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741698552] [2019-11-28 02:57:40,252 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:40,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:40,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:40,267 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:40,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:40,268 INFO L82 PathProgramCache]: Analyzing trace with hash 1220476, now seen corresponding path program 1 times [2019-11-28 02:57:40,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:40,269 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309442144] [2019-11-28 02:57:40,269 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:40,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:40,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:40,279 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:40,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:40,280 INFO L82 PathProgramCache]: Analyzing trace with hash -1891526915, now seen corresponding path program 1 times [2019-11-28 02:57:40,280 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:40,281 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134714475] [2019-11-28 02:57:40,281 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:40,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:40,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:40,303 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:40,421 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:57:40,421 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:57:40,421 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:57:40,421 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:57:40,421 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 02:57:40,422 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:40,422 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:57:40,422 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:57:40,422 INFO L133 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4.c_Iteration2_Loop [2019-11-28 02:57:40,422 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:57:40,422 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:57:40,424 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:40,428 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:40,431 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:40,433 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:40,443 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:40,530 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:57:40,530 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:40,536 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:40,537 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:40,542 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 02:57:40,542 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_#res=0} Honda state: {p_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:40,549 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:40,549 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:40,553 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 02:57:40,554 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_#t~ret0=0} Honda state: {p_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:40,565 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:40,566 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:40,570 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 02:57:40,570 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_#t~ret1=0} Honda state: {p_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:40,578 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:40,578 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:40,595 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 02:57:40,596 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:41,280 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 02:57:41,282 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:57:41,282 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:57:41,283 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:57:41,283 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:57:41,283 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 02:57:41,283 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:41,283 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:57:41,284 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:57:41,284 INFO L133 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4.c_Iteration2_Loop [2019-11-28 02:57:41,284 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:57:41,284 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:57:41,290 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:41,293 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:41,295 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:41,313 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:41,315 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:41,432 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:57:41,432 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:41,442 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:57:41,444 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:41,444 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:57:41,444 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:41,444 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:41,444 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:57:41,445 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 02:57:41,445 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 02:57:41,446 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:41,462 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:57:41,464 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:41,464 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:57:41,464 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:41,464 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:41,464 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:57:41,468 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 02:57:41,468 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 02:57:41,470 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:41,476 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:57:41,478 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:41,478 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:57:41,478 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:41,478 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:41,478 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:41,480 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 02:57:41,480 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 02:57:41,482 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 02:57:41,485 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-28 02:57:41,486 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:41,489 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 02:57:41,489 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 02:57:41,490 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 02:57:41,490 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(p_~n) = 1*p_~n Supporting invariants [] [2019-11-28 02:57:41,492 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-28 02:57:41,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:41,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:41,527 INFO L255 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 02:57:41,529 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:41,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:41,546 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-28 02:57:41,547 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:41,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:57:41,582 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2019-11-28 02:57:41,582 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 16 transitions. cyclomatic complexity: 5 Second operand 5 states. [2019-11-28 02:57:41,607 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 16 transitions. cyclomatic complexity: 5. Second operand 5 states. Result 25 states and 30 transitions. Complement of second has 13 states. [2019-11-28 02:57:41,607 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2019-11-28 02:57:41,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-11-28 02:57:41,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 13 transitions. [2019-11-28 02:57:41,608 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 5 letters. Loop has 4 letters. [2019-11-28 02:57:41,609 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:41,609 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 9 letters. Loop has 4 letters. [2019-11-28 02:57:41,609 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:41,609 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 5 letters. Loop has 8 letters. [2019-11-28 02:57:41,610 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:41,610 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 30 transitions. [2019-11-28 02:57:41,611 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-11-28 02:57:41,613 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 20 states and 24 transitions. [2019-11-28 02:57:41,613 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2019-11-28 02:57:41,613 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2019-11-28 02:57:41,613 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 24 transitions. [2019-11-28 02:57:41,613 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 02:57:41,613 INFO L688 BuchiCegarLoop]: Abstraction has 20 states and 24 transitions. [2019-11-28 02:57:41,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states and 24 transitions. [2019-11-28 02:57:41,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2019-11-28 02:57:41,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-28 02:57:41,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2019-11-28 02:57:41,616 INFO L711 BuchiCegarLoop]: Abstraction has 18 states and 22 transitions. [2019-11-28 02:57:41,616 INFO L591 BuchiCegarLoop]: Abstraction has 18 states and 22 transitions. [2019-11-28 02:57:41,616 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-28 02:57:41,616 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 22 transitions. [2019-11-28 02:57:41,617 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-11-28 02:57:41,617 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 02:57:41,617 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 02:57:41,619 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:57:41,619 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-28 02:57:41,619 INFO L794 eck$LassoCheckResult]: Stem: 227#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~ret5, main_~m~0, main_~n~0, main_~r~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~r~0 := main_#t~nondet4;havoc main_#t~nondet4; 228#L28 assume (main_~m~0 >= 0 && main_~n~0 >= 0) && main_~r~0 >= 0; 222#L29 call main_#t~ret5 := p(main_~m~0, main_~n~0, main_~r~0);< 230#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 232#L13 assume !(~r > 0); 225#L16 assume ~n > 0; 221#L17 call #t~ret1 := p(~r, ~n - 1, ~m);< 224#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 234#L13 assume ~r > 0; 219#L14 [2019-11-28 02:57:41,619 INFO L796 eck$LassoCheckResult]: Loop: 219#L14 call #t~ret0 := p(~m, ~r - 1, ~n);< 220#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 235#L13 assume ~r > 0; 219#L14 [2019-11-28 02:57:41,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:41,620 INFO L82 PathProgramCache]: Analyzing trace with hash -1891526918, now seen corresponding path program 1 times [2019-11-28 02:57:41,620 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:41,620 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033984175] [2019-11-28 02:57:41,620 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:41,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:41,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:41,640 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:41,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:41,641 INFO L82 PathProgramCache]: Analyzing trace with hash 56702, now seen corresponding path program 2 times [2019-11-28 02:57:41,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:41,641 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692583027] [2019-11-28 02:57:41,642 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:41,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:41,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:41,655 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:41,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:41,655 INFO L82 PathProgramCache]: Analyzing trace with hash -507463707, now seen corresponding path program 1 times [2019-11-28 02:57:41,655 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:41,658 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924882838] [2019-11-28 02:57:41,658 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:41,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:41,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:41,702 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:41,784 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:57:41,784 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:57:41,785 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:57:41,785 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:57:41,785 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 02:57:41,785 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:41,785 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:57:41,785 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:57:41,785 INFO L133 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4.c_Iteration3_Loop [2019-11-28 02:57:41,785 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:57:41,785 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:57:41,787 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:41,793 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:41,804 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:41,806 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:41,811 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:41,888 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:57:41,889 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:41,895 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:41,895 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:41,904 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 02:57:41,904 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_#in~m=-6, p_~m=-6} Honda state: {p_#in~m=-6, p_~m=-6} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:41,914 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:41,914 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:41,932 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 02:57:41,932 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:53,963 INFO L442 LassoAnalysis]: Proving nontermination failed: SMT Solver returned 'unknown'. [2019-11-28 02:57:53,965 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:57:53,965 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:57:53,966 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:57:53,966 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:57:53,966 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 02:57:53,966 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:53,966 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:57:53,966 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:57:53,966 INFO L133 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4.c_Iteration3_Loop [2019-11-28 02:57:53,966 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:57:53,966 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:57:53,968 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:53,974 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:53,989 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:53,993 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:53,996 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:54,068 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:57:54,068 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:54,085 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:57:54,087 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:54,088 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:57:54,088 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:54,088 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:54,088 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:57:54,090 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 02:57:54,090 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:54,093 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:54,103 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:57:54,106 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:54,106 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:57:54,106 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:54,107 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:54,107 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:57:54,112 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 02:57:54,112 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:54,117 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:54,129 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:57:54,131 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:54,131 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:57:54,132 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:54,132 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:54,132 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:57:54,133 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 02:57:54,133 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:54,136 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:54,148 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:57:54,150 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:54,150 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:57:54,151 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:54,151 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:54,151 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:57:54,152 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 02:57:54,152 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:54,154 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:54,161 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:57:54,163 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:54,164 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:57:54,164 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:54,164 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:54,164 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:57:54,165 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 02:57:54,165 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:54,167 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-28 02:57:54,169 INFO L489 LassoAnalysis]: Using template '2-nested'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:54,178 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:57:54,180 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:54,180 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:57:54,181 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:54,181 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:54,181 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2019-11-28 02:57:54,183 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2019-11-28 02:57:54,183 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:54,186 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:54,196 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:57:54,198 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:54,199 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:57:54,199 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:54,199 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:54,199 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2019-11-28 02:57:54,203 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2019-11-28 02:57:54,203 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:54,209 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 02:57:54,220 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2019-11-28 02:57:54,220 INFO L444 ModelExtractionUtils]: 5 out of 11 variables were initially zero. Simplification set additionally 2 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:54,226 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 02:57:54,226 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 02:57:54,227 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 02:57:54,227 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function 2-nested ranking function: f0 = 1*p_~r + 1*p_~n f1 = 1*p_~n Supporting invariants [] [2019-11-28 02:57:54,230 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:54,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:54,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:54,273 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-28 02:57:54,275 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:54,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:54,291 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-28 02:57:54,292 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:54,299 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 02:57:54,300 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 02:57:54,305 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 02:57:54,340 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 02:57:54,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:57:54,369 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2019-11-28 02:57:54,369 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 22 transitions. cyclomatic complexity: 7 Second operand 4 states. [2019-11-28 02:57:54,518 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 22 transitions. cyclomatic complexity: 7. Second operand 4 states. Result 42 states and 50 transitions. Complement of second has 9 states. [2019-11-28 02:57:54,519 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-28 02:57:54,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-28 02:57:54,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2019-11-28 02:57:54,520 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 9 letters. Loop has 3 letters. [2019-11-28 02:57:54,520 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:54,520 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 12 letters. Loop has 3 letters. [2019-11-28 02:57:54,521 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:54,521 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 9 letters. Loop has 6 letters. [2019-11-28 02:57:54,521 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:54,522 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 42 states and 50 transitions. [2019-11-28 02:57:54,525 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-11-28 02:57:54,526 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 42 states to 36 states and 44 transitions. [2019-11-28 02:57:54,527 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2019-11-28 02:57:54,527 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 19 [2019-11-28 02:57:54,527 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 44 transitions. [2019-11-28 02:57:54,527 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 02:57:54,528 INFO L688 BuchiCegarLoop]: Abstraction has 36 states and 44 transitions. [2019-11-28 02:57:54,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states and 44 transitions. [2019-11-28 02:57:54,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 31. [2019-11-28 02:57:54,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-28 02:57:54,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 38 transitions. [2019-11-28 02:57:54,532 INFO L711 BuchiCegarLoop]: Abstraction has 31 states and 38 transitions. [2019-11-28 02:57:54,532 INFO L591 BuchiCegarLoop]: Abstraction has 31 states and 38 transitions. [2019-11-28 02:57:54,532 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-28 02:57:54,533 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 31 states and 38 transitions. [2019-11-28 02:57:54,534 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-11-28 02:57:54,534 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 02:57:54,534 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 02:57:54,535 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:57:54,535 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-28 02:57:54,535 INFO L794 eck$LassoCheckResult]: Stem: 355#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~ret5, main_~m~0, main_~n~0, main_~r~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~r~0 := main_#t~nondet4;havoc main_#t~nondet4; 356#L28 assume (main_~m~0 >= 0 && main_~n~0 >= 0) && main_~r~0 >= 0; 357#L29 call main_#t~ret5 := p(main_~m~0, main_~n~0, main_~r~0);< 360#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 361#L13 assume ~r > 0; 351#L14 call #t~ret0 := p(~m, ~r - 1, ~n);< 358#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 375#L13 assume !(~r > 0); 353#L16 assume ~n > 0; 350#L17 call #t~ret1 := p(~r, ~n - 1, ~m);< 352#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 365#L13 assume ~r > 0; 349#L14 [2019-11-28 02:57:54,535 INFO L796 eck$LassoCheckResult]: Loop: 349#L14 call #t~ret0 := p(~m, ~r - 1, ~n);< 348#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 373#L13 assume ~r > 0; 349#L14 [2019-11-28 02:57:54,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:54,536 INFO L82 PathProgramCache]: Analyzing trace with hash 1683587899, now seen corresponding path program 2 times [2019-11-28 02:57:54,536 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:54,536 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170093738] [2019-11-28 02:57:54,536 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:54,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:54,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:54,555 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:54,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:54,556 INFO L82 PathProgramCache]: Analyzing trace with hash 56702, now seen corresponding path program 3 times [2019-11-28 02:57:54,556 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:54,557 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359466575] [2019-11-28 02:57:54,557 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:54,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:54,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:54,563 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:54,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:54,564 INFO L82 PathProgramCache]: Analyzing trace with hash -860956668, now seen corresponding path program 3 times [2019-11-28 02:57:54,565 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:54,565 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548827235] [2019-11-28 02:57:54,565 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:54,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:54,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:54,590 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:54,657 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:57:54,657 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:57:54,658 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:57:54,658 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:57:54,658 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 02:57:54,658 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:54,658 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:57:54,659 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:57:54,663 INFO L133 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4.c_Iteration4_Loop [2019-11-28 02:57:54,663 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:57:54,663 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:57:54,664 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:54,682 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:54,684 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:54,686 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:54,691 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:54,757 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:57:54,757 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:54,767 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:54,767 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 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 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:54,785 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 02:57:54,785 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 02:58:06,802 INFO L442 LassoAnalysis]: Proving nontermination failed: SMT Solver returned 'unknown'. [2019-11-28 02:58:06,805 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:58:06,805 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:58:06,805 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:58:06,805 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:58:06,805 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 02:58:06,806 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:58:06,806 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:58:06,806 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:58:06,806 INFO L133 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4.c_Iteration4_Loop [2019-11-28 02:58:06,806 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:58:06,806 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:58:06,807 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:06,819 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:06,822 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:06,824 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:06,830 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:06,900 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:58:06,901 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:58:06,905 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:58:06,907 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:58:06,907 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:58:06,907 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:58:06,907 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:58:06,907 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:58:06,909 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 02:58:06,909 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 02:58:06,912 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:58:06,917 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:58:06,919 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:58:06,919 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:58:06,919 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:58:06,919 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:58:06,919 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:58:06,920 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 02:58:06,920 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 02:58:06,923 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:58:06,935 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:58:06,937 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:58:06,938 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:58:06,938 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:58:06,938 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:58:06,938 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:58:06,939 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 02:58:06,939 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:58:06,941 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:58:06,948 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:58:06,950 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:58:06,950 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:58:06,950 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:58:06,950 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:58:06,950 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:58:06,951 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 02:58:06,951 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 02:58:06,954 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:58:06,967 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:58:06,969 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:58:06,969 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:58:06,969 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:58:06,970 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:58:06,970 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:58:06,971 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 02:58:06,973 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 52 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:58:06,975 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-28 02:58:06,977 INFO L489 LassoAnalysis]: Using template '2-nested'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:58:06,982 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:58:06,985 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:58:06,986 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:58:06,986 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:58:06,986 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:58:06,986 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2019-11-28 02:58:06,989 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2019-11-28 02:58:06,989 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 53 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:58:06,995 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 02:58:07,006 INFO L443 ModelExtractionUtils]: Simplification made 6 calls to the SMT solver. [2019-11-28 02:58:07,006 INFO L444 ModelExtractionUtils]: 5 out of 11 variables were initially zero. Simplification set additionally 2 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:58:07,011 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 02:58:07,011 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 02:58:07,012 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 02:58:07,012 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function 2-nested ranking function: f0 = 1*p_~n + 1*p_~r f1 = 1*p_~n Supporting invariants [] [2019-11-28 02:58:07,015 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 54 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:58:07,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:58:07,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:58:07,081 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-28 02:58:07,083 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:58:07,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:58:07,099 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-28 02:58:07,100 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:58:07,102 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 02:58:07,104 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 02:58:07,106 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 02:58:07,135 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 02:58:07,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:58:07,161 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2019-11-28 02:58:07,161 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 38 transitions. cyclomatic complexity: 12 Second operand 4 states. [2019-11-28 02:58:07,304 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 31 states and 38 transitions. cyclomatic complexity: 12. Second operand 4 states. Result 48 states and 60 transitions. Complement of second has 9 states. [2019-11-28 02:58:07,305 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-28 02:58:07,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-28 02:58:07,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2019-11-28 02:58:07,306 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 12 letters. Loop has 3 letters. [2019-11-28 02:58:07,306 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:58:07,306 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-28 02:58:07,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:58:07,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:58:07,358 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-28 02:58:07,360 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:58:07,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:58:07,376 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-28 02:58:07,377 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:58:07,380 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 02:58:07,380 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 02:58:07,382 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 02:58:07,409 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 02:58:07,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:58:07,441 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2019-11-28 02:58:07,442 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 38 transitions. cyclomatic complexity: 12 Second operand 4 states. [2019-11-28 02:58:07,570 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 31 states and 38 transitions. cyclomatic complexity: 12. Second operand 4 states. Result 48 states and 60 transitions. Complement of second has 9 states. [2019-11-28 02:58:07,572 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-28 02:58:07,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-28 02:58:07,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2019-11-28 02:58:07,573 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 12 letters. Loop has 3 letters. [2019-11-28 02:58:07,573 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:58:07,573 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-28 02:58:07,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:58:07,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:58:07,622 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-28 02:58:07,623 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:58:07,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:58:07,644 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-28 02:58:07,645 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:58:07,649 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 02:58:07,650 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 02:58:07,654 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 02:58:07,687 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 02:58:07,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:58:07,715 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2019-11-28 02:58:07,715 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 38 transitions. cyclomatic complexity: 12 Second operand 4 states. [2019-11-28 02:58:07,854 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 31 states and 38 transitions. cyclomatic complexity: 12. Second operand 4 states. Result 53 states and 68 transitions. Complement of second has 8 states. [2019-11-28 02:58:07,857 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-28 02:58:07,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-28 02:58:07,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2019-11-28 02:58:07,858 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 12 letters. Loop has 3 letters. [2019-11-28 02:58:07,858 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:58:07,858 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 15 letters. Loop has 3 letters. [2019-11-28 02:58:07,859 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:58:07,859 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 12 letters. Loop has 6 letters. [2019-11-28 02:58:07,859 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:58:07,859 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 53 states and 68 transitions. [2019-11-28 02:58:07,861 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2019-11-28 02:58:07,863 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 53 states to 41 states and 51 transitions. [2019-11-28 02:58:07,863 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 19 [2019-11-28 02:58:07,863 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 21 [2019-11-28 02:58:07,863 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 51 transitions. [2019-11-28 02:58:07,863 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 02:58:07,863 INFO L688 BuchiCegarLoop]: Abstraction has 41 states and 51 transitions. [2019-11-28 02:58:07,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states and 51 transitions. [2019-11-28 02:58:07,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 24. [2019-11-28 02:58:07,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-11-28 02:58:07,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 30 transitions. [2019-11-28 02:58:07,867 INFO L711 BuchiCegarLoop]: Abstraction has 24 states and 30 transitions. [2019-11-28 02:58:07,867 INFO L591 BuchiCegarLoop]: Abstraction has 24 states and 30 transitions. [2019-11-28 02:58:07,867 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-11-28 02:58:07,867 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 30 transitions. [2019-11-28 02:58:07,869 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2019-11-28 02:58:07,869 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 02:58:07,870 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 02:58:07,871 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:58:07,871 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1] [2019-11-28 02:58:07,871 INFO L794 eck$LassoCheckResult]: Stem: 724#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~ret5, main_~m~0, main_~n~0, main_~r~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~r~0 := main_#t~nondet4;havoc main_#t~nondet4; 725#L28 assume (main_~m~0 >= 0 && main_~n~0 >= 0) && main_~r~0 >= 0; 723#L29 call main_#t~ret5 := p(main_~m~0, main_~n~0, main_~r~0);< 732#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 733#L13 assume !(~r > 0); 726#L16 assume ~n > 0; 720#L17 call #t~ret1 := p(~r, ~n - 1, ~m);< 721#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 734#L13 assume ~r > 0; 718#L14 [2019-11-28 02:58:07,871 INFO L796 eck$LassoCheckResult]: Loop: 718#L14 call #t~ret0 := p(~m, ~r - 1, ~n);< 729#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 730#L13 assume !(~r > 0); 735#L16 assume ~n > 0; 716#L17 call #t~ret1 := p(~r, ~n - 1, ~m);< 719#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 736#L13 assume ~r > 0; 718#L14 [2019-11-28 02:58:07,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:58:07,872 INFO L82 PathProgramCache]: Analyzing trace with hash -1891526918, now seen corresponding path program 2 times [2019-11-28 02:58:07,872 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:58:07,872 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90886269] [2019-11-28 02:58:07,872 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:58:07,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:58:07,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:58:07,885 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:58:07,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:58:07,886 INFO L82 PathProgramCache]: Analyzing trace with hash 828947705, now seen corresponding path program 1 times [2019-11-28 02:58:07,886 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:58:07,887 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366116626] [2019-11-28 02:58:07,887 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:58:07,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:58:07,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:58:07,903 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:58:07,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:58:07,903 INFO L82 PathProgramCache]: Analyzing trace with hash 559352800, now seen corresponding path program 4 times [2019-11-28 02:58:07,904 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:58:07,904 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153188889] [2019-11-28 02:58:07,904 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:58:07,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:58:07,983 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-28 02:58:07,983 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153188889] [2019-11-28 02:58:07,985 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1055418481] [2019-11-28 02:58:07,985 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:58:08,023 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-28 02:58:08,024 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 02:58:08,025 INFO L255 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-28 02:58:08,026 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:58:08,034 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-28 02:58:08,035 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 02:58:08,035 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2019-11-28 02:58:08,036 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230785505] [2019-11-28 02:58:08,234 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:58:08,234 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:58:08,234 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:58:08,234 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:58:08,234 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 02:58:08,234 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:58:08,234 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:58:08,234 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:58:08,235 INFO L133 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4.c_Iteration5_Loop [2019-11-28 02:58:08,235 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:58:08,235 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:58:08,236 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:08,238 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:08,240 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:08,242 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:08,322 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:58:08,323 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 56 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:58:08,332 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:58:08,332 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 56 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:58:08,335 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 02:58:08,336 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_#res=0} Honda state: {p_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 57 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:58:08,342 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:58:08,342 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 57 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:58:08,345 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 02:58:08,345 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_#t~ret1=0} Honda state: {p_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 58 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:58:08,351 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:58:08,351 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 58 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:58:08,355 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 02:58:08,355 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_#t~ret0=0} Honda state: {p_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 59 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:58:08,361 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:58:08,361 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 59 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 60 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:58:08,376 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 02:58:08,377 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 60 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:58:14,047 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 02:58:14,050 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:58:14,051 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:58:14,051 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:58:14,051 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:58:14,051 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 02:58:14,051 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:58:14,051 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:58:14,051 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:58:14,051 INFO L133 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4.c_Iteration5_Loop [2019-11-28 02:58:14,051 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:58:14,052 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:58:14,052 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:14,058 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:14,062 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:14,068 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:14,183 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:58:14,183 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 61 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:58:14,187 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:58:14,189 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:58:14,189 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:58:14,189 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:58:14,189 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:58:14,189 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:58:14,190 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 02:58:14,190 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 02:58:14,196 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 62 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:58:14,202 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:58:14,203 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:58:14,203 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:58:14,204 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:58:14,204 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:58:14,204 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:58:14,204 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 02:58:14,204 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 62 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:58:14,206 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 63 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:58:14,213 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:58:14,214 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:58:14,214 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:58:14,215 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:58:14,215 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:58:14,215 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:58:14,215 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 02:58:14,216 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 63 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:58:14,217 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 64 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:58:14,223 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:58:14,224 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:58:14,224 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:58:14,225 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:58:14,225 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:58:14,225 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:58:14,227 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 02:58:14,227 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 02:58:14,233 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 02:58:14,241 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-28 02:58:14,241 INFO L444 ModelExtractionUtils]: 5 out of 8 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 65 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:58:14,247 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 02:58:14,247 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 02:58:14,247 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 02:58:14,247 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(p_~m) = 1*p_~m Supporting invariants [] [2019-11-28 02:58:14,249 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 65 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:58:14,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:58:14,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:58:14,279 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-28 02:58:14,281 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:58:14,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:58:14,299 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 14 conjunts are in the unsatisfiable core [2019-11-28 02:58:14,300 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:58:14,353 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:58:14,353 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 5 loop predicates [2019-11-28 02:58:14,353 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 30 transitions. cyclomatic complexity: 9 Second operand 7 states. [2019-11-28 02:58:14,463 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 30 transitions. cyclomatic complexity: 9. Second operand 7 states. Result 104 states and 131 transitions. Complement of second has 26 states. [2019-11-28 02:58:14,466 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 1 stem states 5 non-accepting loop states 1 accepting loop states [2019-11-28 02:58:14,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-11-28 02:58:14,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 20 transitions. [2019-11-28 02:58:14,466 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 20 transitions. Stem has 9 letters. Loop has 7 letters. [2019-11-28 02:58:14,467 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:58:14,467 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 20 transitions. Stem has 16 letters. Loop has 7 letters. [2019-11-28 02:58:14,467 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:58:14,467 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 20 transitions. Stem has 9 letters. Loop has 14 letters. [2019-11-28 02:58:14,467 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:58:14,468 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 104 states and 131 transitions. [2019-11-28 02:58:14,474 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2019-11-28 02:58:14,482 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 104 states to 104 states and 131 transitions. [2019-11-28 02:58:14,482 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 31 [2019-11-28 02:58:14,482 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 32 [2019-11-28 02:58:14,484 INFO L73 IsDeterministic]: Start isDeterministic. Operand 104 states and 131 transitions. [2019-11-28 02:58:14,484 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 02:58:14,484 INFO L688 BuchiCegarLoop]: Abstraction has 104 states and 131 transitions. [2019-11-28 02:58:14,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states and 131 transitions. [2019-11-28 02:58:14,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 59. [2019-11-28 02:58:14,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2019-11-28 02:58:14,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 79 transitions. [2019-11-28 02:58:14,491 INFO L711 BuchiCegarLoop]: Abstraction has 59 states and 79 transitions. [2019-11-28 02:58:14,491 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:58:14,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-28 02:58:14,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-28 02:58:14,495 INFO L87 Difference]: Start difference. First operand 59 states and 79 transitions. Second operand 6 states. [2019-11-28 02:58:14,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:58:14,562 INFO L93 Difference]: Finished difference Result 79 states and 95 transitions. [2019-11-28 02:58:14,562 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-28 02:58:14,562 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 79 states and 95 transitions. [2019-11-28 02:58:14,564 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2019-11-28 02:58:14,565 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 79 states to 37 states and 43 transitions. [2019-11-28 02:58:14,565 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20 [2019-11-28 02:58:14,566 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 23 [2019-11-28 02:58:14,566 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 43 transitions. [2019-11-28 02:58:14,566 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 02:58:14,566 INFO L688 BuchiCegarLoop]: Abstraction has 37 states and 43 transitions. [2019-11-28 02:58:14,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states and 43 transitions. [2019-11-28 02:58:14,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 24. [2019-11-28 02:58:14,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-11-28 02:58:14,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2019-11-28 02:58:14,569 INFO L711 BuchiCegarLoop]: Abstraction has 24 states and 28 transitions. [2019-11-28 02:58:14,569 INFO L591 BuchiCegarLoop]: Abstraction has 24 states and 28 transitions. [2019-11-28 02:58:14,569 INFO L424 BuchiCegarLoop]: ======== Iteration 6============ [2019-11-28 02:58:14,569 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 28 transitions. [2019-11-28 02:58:14,570 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-28 02:58:14,570 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 02:58:14,570 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 02:58:14,571 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:58:14,571 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-11-28 02:58:14,571 INFO L794 eck$LassoCheckResult]: Stem: 1150#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~ret5, main_~m~0, main_~n~0, main_~r~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~r~0 := main_#t~nondet4;havoc main_#t~nondet4; 1151#L28 assume (main_~m~0 >= 0 && main_~n~0 >= 0) && main_~r~0 >= 0; 1152#L29 call main_#t~ret5 := p(main_~m~0, main_~n~0, main_~r~0);< 1157#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 1163#L13 assume !(~r > 0); 1162#L16 assume ~n > 0; 1153#L17 call #t~ret1 := p(~r, ~n - 1, ~m);< 1161#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 1160#L13 assume ~r > 0; 1144#L14 call #t~ret0 := p(~m, ~r - 1, ~n);< 1142#pENTRY [2019-11-28 02:58:14,572 INFO L796 eck$LassoCheckResult]: Loop: 1142#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 1154#L13 assume !(~r > 0); 1148#L16 assume ~n > 0; 1141#L17 call #t~ret1 := p(~r, ~n - 1, ~m);< 1142#pENTRY [2019-11-28 02:58:14,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:58:14,572 INFO L82 PathProgramCache]: Analyzing trace with hash 1492207714, now seen corresponding path program 5 times [2019-11-28 02:58:14,572 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:58:14,572 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072477689] [2019-11-28 02:58:14,573 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:58:14,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:58:14,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:58:14,585 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:58:14,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:58:14,586 INFO L82 PathProgramCache]: Analyzing trace with hash 929596, now seen corresponding path program 2 times [2019-11-28 02:58:14,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:58:14,586 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127218899] [2019-11-28 02:58:14,587 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:58:14,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:58:14,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:58:14,591 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:58:14,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:58:14,592 INFO L82 PathProgramCache]: Analyzing trace with hash 1953652509, now seen corresponding path program 6 times [2019-11-28 02:58:14,592 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:58:14,593 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633435759] [2019-11-28 02:58:14,593 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:58:14,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:58:14,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:58:14,607 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:58:14,657 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:58:14,657 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:58:14,657 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:58:14,657 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:58:14,657 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 02:58:14,657 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:58:14,657 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:58:14,657 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:58:14,658 INFO L133 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4.c_Iteration6_Loop [2019-11-28 02:58:14,658 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:58:14,658 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:58:14,659 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:14,662 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:14,663 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:14,668 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:14,670 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:14,673 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:14,675 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:14,677 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:14,728 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:58:14,729 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 66 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:58:14,742 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:58:14,742 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 66 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:58:14,745 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 02:58:14,746 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_#res=0} Honda state: {p_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 67 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:58:14,755 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:58:14,755 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 67 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:58:14,760 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 02:58:14,760 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_~r=0} Honda state: {p_~r=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 68 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:58:14,766 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:58:14,766 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 68 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 69 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:58:14,779 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 02:58:14,779 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 69 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:58:14,786 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 02:58:14,788 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:58:14,788 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:58:14,788 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:58:14,788 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:58:14,788 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 02:58:14,788 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:58:14,789 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:58:14,789 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:58:14,789 INFO L133 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4.c_Iteration6_Loop [2019-11-28 02:58:14,789 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:58:14,789 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:58:14,791 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:14,795 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:14,802 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:14,804 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:14,809 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:14,811 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:14,813 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:14,815 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:14,864 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:58:14,865 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 70 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 70 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:58:14,869 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:58:14,870 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:58:14,870 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:58:14,870 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:58:14,870 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:58:14,870 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:58:14,871 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 02:58:14,871 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 02:58:14,872 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 71 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 71 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:58:14,877 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:58:14,878 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:58:14,878 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:58:14,878 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:58:14,878 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:58:14,878 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:58:14,879 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 02:58:14,879 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 02:58:14,880 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 72 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 72 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:58:14,885 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:58:14,886 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:58:14,887 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:58:14,887 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:58:14,887 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:58:14,887 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:58:14,888 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 02:58:14,888 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 02:58:14,889 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 73 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 73 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:58:14,894 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:58:14,896 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:58:14,896 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:58:14,896 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:58:14,896 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:58:14,896 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:58:14,897 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 02:58:14,897 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 02:58:14,899 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 02:58:14,902 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-28 02:58:14,903 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 74 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 74 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:58:14,907 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 02:58:14,907 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 02:58:14,908 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 02:58:14,908 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(p_#in~n) = 1*p_#in~n Supporting invariants [] [MP z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (73)] Exception during sending of exit command (exit): Broken pipe [2019-11-28 02:58:14,909 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-28 02:58:14,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:58:14,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:58:14,946 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-28 02:58:14,947 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:58:14,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:58:14,959 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-28 02:58:14,960 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:58:14,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:58:14,976 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2019-11-28 02:58:14,976 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 28 transitions. cyclomatic complexity: 7 Second operand 4 states. [2019-11-28 02:58:15,025 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 28 transitions. cyclomatic complexity: 7. Second operand 4 states. Result 62 states and 70 transitions. Complement of second has 13 states. [2019-11-28 02:58:15,026 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-28 02:58:15,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-28 02:58:15,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2019-11-28 02:58:15,027 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 10 letters. Loop has 4 letters. [2019-11-28 02:58:15,027 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:58:15,027 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 14 letters. Loop has 4 letters. [2019-11-28 02:58:15,027 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:58:15,028 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 10 letters. Loop has 8 letters. [2019-11-28 02:58:15,028 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:58:15,028 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 62 states and 70 transitions. [2019-11-28 02:58:15,030 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-28 02:58:15,031 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 62 states to 39 states and 46 transitions. [2019-11-28 02:58:15,031 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2019-11-28 02:58:15,031 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2019-11-28 02:58:15,031 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 46 transitions. [2019-11-28 02:58:15,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 02:58:15,032 INFO L688 BuchiCegarLoop]: Abstraction has 39 states and 46 transitions. [2019-11-28 02:58:15,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states and 46 transitions. [2019-11-28 02:58:15,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 24. [2019-11-28 02:58:15,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-11-28 02:58:15,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2019-11-28 02:58:15,034 INFO L711 BuchiCegarLoop]: Abstraction has 24 states and 27 transitions. [2019-11-28 02:58:15,035 INFO L591 BuchiCegarLoop]: Abstraction has 24 states and 27 transitions. [2019-11-28 02:58:15,035 INFO L424 BuchiCegarLoop]: ======== Iteration 7============ [2019-11-28 02:58:15,035 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 27 transitions. [2019-11-28 02:58:15,036 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-28 02:58:15,036 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 02:58:15,036 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 02:58:15,037 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2019-11-28 02:58:15,037 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-11-28 02:58:15,037 INFO L794 eck$LassoCheckResult]: Stem: 1308#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~ret5, main_~m~0, main_~n~0, main_~r~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~r~0 := main_#t~nondet4;havoc main_#t~nondet4; 1309#L28 assume (main_~m~0 >= 0 && main_~n~0 >= 0) && main_~r~0 >= 0; 1312#L29 call main_#t~ret5 := p(main_~m~0, main_~n~0, main_~r~0);< 1319#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 1320#L13 assume !(~r > 0); 1321#L16 assume ~n > 0; 1314#L17 call #t~ret1 := p(~r, ~n - 1, ~m);< 1323#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 1322#L13 assume ~r > 0; 1313#L14 call #t~ret0 := p(~m, ~r - 1, ~n);< 1307#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 1318#L13 assume ~r > 0; 1303#L14 call #t~ret0 := p(~m, ~r - 1, ~n);< 1304#pENTRY [2019-11-28 02:58:15,037 INFO L796 eck$LassoCheckResult]: Loop: 1304#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 1324#L13 assume !(~r > 0); 1310#L16 assume ~n > 0; 1302#L17 call #t~ret1 := p(~r, ~n - 1, ~m);< 1304#pENTRY [2019-11-28 02:58:15,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:58:15,038 INFO L82 PathProgramCache]: Analyzing trace with hash 1448494295, now seen corresponding path program 7 times [2019-11-28 02:58:15,038 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:58:15,038 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849523136] [2019-11-28 02:58:15,038 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:58:15,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:58:15,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:58:15,054 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:58:15,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:58:15,054 INFO L82 PathProgramCache]: Analyzing trace with hash 929596, now seen corresponding path program 3 times [2019-11-28 02:58:15,055 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:58:15,055 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913220742] [2019-11-28 02:58:15,055 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:58:15,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:58:15,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:58:15,060 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:58:15,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:58:15,061 INFO L82 PathProgramCache]: Analyzing trace with hash 90839314, now seen corresponding path program 8 times [2019-11-28 02:58:15,061 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:58:15,061 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439187417] [2019-11-28 02:58:15,062 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:58:15,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:58:15,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:58:15,078 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:58:15,133 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:58:15,134 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:58:15,134 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:58:15,134 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:58:15,134 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 02:58:15,134 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:58:15,134 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:58:15,134 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:58:15,135 INFO L133 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4.c_Iteration7_Loop [2019-11-28 02:58:15,135 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:58:15,135 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:58:15,136 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:15,138 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:15,144 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:15,146 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:15,148 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:15,157 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:15,158 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:15,159 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:15,212 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:58:15,212 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 75 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:58:15,224 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:58:15,224 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 75 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:58:15,228 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 02:58:15,228 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_#res=0} Honda state: {p_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 76 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:58:15,235 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:58:15,235 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 76 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:58:15,241 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 02:58:15,241 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_#in~m=0, p_#in~r=0} Honda state: {p_#in~m=0, p_#in~r=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 77 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:58:15,249 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:58:15,249 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 77 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:58:15,253 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 02:58:15,253 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_~m=0} Honda state: {p_~m=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 78 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:58:15,262 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:58:15,262 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 78 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:58:15,266 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 02:58:15,266 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_~r=0} Honda state: {p_~r=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 79 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:58:15,273 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:58:15,273 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 79 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 80 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:58:15,285 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 02:58:15,285 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 80 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:58:15,332 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 02:58:15,333 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:58:15,333 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:58:15,333 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:58:15,334 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:58:15,334 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 02:58:15,334 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:58:15,334 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:58:15,334 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:58:15,334 INFO L133 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4.c_Iteration7_Loop [2019-11-28 02:58:15,334 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:58:15,334 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:58:15,335 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:15,336 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:15,343 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:15,346 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:15,352 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:15,355 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:15,356 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:15,358 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:15,415 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:58:15,415 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 81 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 81 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:58:15,421 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:58:15,422 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:58:15,422 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:58:15,422 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:58:15,423 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:58:15,423 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:58:15,423 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 02:58:15,423 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 02:58:15,424 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 82 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 82 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:58:15,432 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:58:15,433 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:58:15,433 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:58:15,433 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:58:15,433 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:58:15,433 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:58:15,434 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 02:58:15,434 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 02:58:15,436 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 83 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 83 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:58:15,441 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:58:15,442 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:58:15,442 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:58:15,442 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:58:15,442 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:58:15,443 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:58:15,444 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 02:58:15,444 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 02:58:15,449 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 84 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 84 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:58:15,454 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:58:15,455 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:58:15,456 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:58:15,456 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:58:15,456 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:58:15,456 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:58:15,457 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 02:58:15,457 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 02:58:15,460 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 02:58:15,462 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-28 02:58:15,462 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 85 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 85 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:58:15,467 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 02:58:15,467 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 02:58:15,467 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 02:58:15,467 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(p_#in~n) = 1*p_#in~n Supporting invariants [] [2019-11-28 02:58:15,469 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-28 02:58:15,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:58:15,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:58:15,511 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-28 02:58:15,512 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:58:15,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:58:15,522 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-28 02:58:15,523 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:58:15,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:58:15,541 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2019-11-28 02:58:15,541 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 27 transitions. cyclomatic complexity: 6 Second operand 4 states. [2019-11-28 02:58:15,587 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 27 transitions. cyclomatic complexity: 6. Second operand 4 states. Result 48 states and 55 transitions. Complement of second has 11 states. [2019-11-28 02:58:15,587 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-28 02:58:15,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-28 02:58:15,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2019-11-28 02:58:15,588 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 13 letters. Loop has 4 letters. [2019-11-28 02:58:15,588 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:58:15,588 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-28 02:58:15,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:58:15,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:58:15,636 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-28 02:58:15,637 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:58:15,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:58:15,648 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-28 02:58:15,649 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:58:15,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:58:15,664 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2019-11-28 02:58:15,665 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 27 transitions. cyclomatic complexity: 6 Second operand 4 states. [2019-11-28 02:58:15,713 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 27 transitions. cyclomatic complexity: 6. Second operand 4 states. Result 48 states and 55 transitions. Complement of second has 11 states. [2019-11-28 02:58:15,715 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-28 02:58:15,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-28 02:58:15,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2019-11-28 02:58:15,717 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 13 letters. Loop has 4 letters. [2019-11-28 02:58:15,717 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:58:15,717 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-28 02:58:15,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:58:15,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:58:15,764 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-28 02:58:15,765 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:58:15,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:58:15,777 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-28 02:58:15,778 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:58:15,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:58:15,798 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2019-11-28 02:58:15,798 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 27 transitions. cyclomatic complexity: 6 Second operand 4 states. [2019-11-28 02:58:15,845 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 27 transitions. cyclomatic complexity: 6. Second operand 4 states. Result 48 states and 53 transitions. Complement of second has 12 states. [2019-11-28 02:58:15,845 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-28 02:58:15,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-28 02:58:15,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2019-11-28 02:58:15,847 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 13 letters. Loop has 4 letters. [2019-11-28 02:58:15,847 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:58:15,848 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 17 letters. Loop has 4 letters. [2019-11-28 02:58:15,848 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:58:15,848 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 13 letters. Loop has 8 letters. [2019-11-28 02:58:15,849 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:58:15,849 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 48 states and 53 transitions. [2019-11-28 02:58:15,850 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-28 02:58:15,851 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 48 states to 0 states and 0 transitions. [2019-11-28 02:58:15,851 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-28 02:58:15,851 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-28 02:58:15,851 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-28 02:58:15,851 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-28 02:58:15,852 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 02:58:15,852 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 02:58:15,852 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 02:58:15,852 INFO L424 BuchiCegarLoop]: ======== Iteration 8============ [2019-11-28 02:58:15,852 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-28 02:58:15,853 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-28 02:58:15,853 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-28 02:58:15,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 02:58:15 BoogieIcfgContainer [2019-11-28 02:58:15,860 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-28 02:58:15,861 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 02:58:15,861 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 02:58:15,861 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 02:58:15,862 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:57:36" (3/4) ... [2019-11-28 02:58:15,866 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-28 02:58:15,866 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 02:58:15,869 INFO L168 Benchmark]: Toolchain (without parser) took 40504.69 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 263.7 MB). Free memory was 953.7 MB in the beginning and 828.0 MB in the end (delta: 125.7 MB). Peak memory consumption was 389.4 MB. Max. memory is 11.5 GB. [2019-11-28 02:58:15,869 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 02:58:15,870 INFO L168 Benchmark]: CACSL2BoogieTranslator took 304.76 ms. Allocated memory is still 1.0 GB. Free memory was 953.7 MB in the beginning and 942.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-28 02:58:15,871 INFO L168 Benchmark]: Boogie Procedure Inliner took 99.43 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.9 MB). Free memory was 942.9 MB in the beginning and 1.1 GB in the end (delta: -194.4 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. [2019-11-28 02:58:15,871 INFO L168 Benchmark]: Boogie Preprocessor took 22.44 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 02:58:15,872 INFO L168 Benchmark]: RCFGBuilder took 258.14 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. [2019-11-28 02:58:15,873 INFO L168 Benchmark]: BuchiAutomizer took 39808.52 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 114.8 MB). Free memory was 1.1 GB in the beginning and 828.0 MB in the end (delta: 298.4 MB). Peak memory consumption was 413.2 MB. Max. memory is 11.5 GB. [2019-11-28 02:58:15,874 INFO L168 Benchmark]: Witness Printer took 5.59 ms. Allocated memory is still 1.3 GB. Free memory is still 828.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 02:58:15,877 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 304.76 ms. Allocated memory is still 1.0 GB. Free memory was 953.7 MB in the beginning and 942.9 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 99.43 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.9 MB). Free memory was 942.9 MB in the beginning and 1.1 GB in the end (delta: -194.4 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 22.44 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 258.14 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 39808.52 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 114.8 MB). Free memory was 1.1 GB in the beginning and 828.0 MB in the end (delta: 298.4 MB). Peak memory consumption was 413.2 MB. Max. memory is 11.5 GB. * Witness Printer took 5.59 ms. Allocated memory is still 1.3 GB. Free memory is still 828.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 8 terminating modules (1 trivial, 5 deterministic, 2 nondeterministic). One deterministic module has 2-nested ranking function (if \old(n) + \old(r) > 0 then 1 else 0), (if \old(n) + \old(r) > 0 then \old(n) + \old(r) else \old(r)) and consists of 4 locations. One deterministic module has affine ranking function n and consists of 5 locations. One deterministic module has 2-nested ranking function (if r + n > 0 then 1 else 0), (if r + n > 0 then r + n else n) and consists of 4 locations. One deterministic module has affine ranking function m and consists of 7 locations. One deterministic module has affine ranking function \old(n) and consists of 4 locations. One nondeterministic module has 2-nested ranking function (if n + r > 0 then 1 else 0), (if n + r > 0 then n + r else n) and consists of 4 locations. One nondeterministic module has affine ranking function \old(n) and consists of 4 locations. 1 modules have a trivial ranking function, the largest among these consists of 6 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 39.7s and 8 iterations. TraceHistogramMax:3. Analysis of lassos took 36.9s. Construction of modules took 0.2s. Büchi inclusion checks took 2.1s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 7. Automata minimization 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 104 StatesRemovedByMinimization, 7 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 31 states and ocurred in iteration 3. Nontrivial modules had stage [5, 0, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/2 HoareTripleCheckerStatistics: 146 SDtfs, 159 SDslu, 59 SDs, 0 SdLazy, 192 SolverSat, 37 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT6 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital24 mio100 ax100 hnf99 lsp73 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq180 hnf89 smp100 dnf100 smp100 tf107 neg100 sie105 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 21ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 3 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 19 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 2 LassoNonterminationAnalysisTime: 33.1s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...