./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/recursive-simple/sum_15x0-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 906a4fb5 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/recursive-simple/sum_15x0-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-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 32bit --witnessprinter.graph.data.programhash e05071c3cebf6e34b512f97f960682899d887306 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-906a4fb [2020-10-19 20:09:02,605 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 20:09:02,608 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 20:09:02,635 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 20:09:02,636 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 20:09:02,637 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 20:09:02,639 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 20:09:02,641 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 20:09:02,643 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 20:09:02,644 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 20:09:02,645 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 20:09:02,646 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 20:09:02,646 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 20:09:02,648 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 20:09:02,652 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 20:09:02,653 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 20:09:02,655 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 20:09:02,659 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 20:09:02,662 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 20:09:02,668 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 20:09:02,672 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 20:09:02,673 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 20:09:02,677 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 20:09:02,679 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 20:09:02,682 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 20:09:02,684 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 20:09:02,685 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 20:09:02,686 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 20:09:02,688 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 20:09:02,689 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 20:09:02,689 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 20:09:02,690 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 20:09:02,691 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 20:09:02,692 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 20:09:02,694 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 20:09:02,695 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 20:09:02,695 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 20:09:02,696 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 20:09:02,696 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 20:09:02,697 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 20:09:02,698 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 20:09:02,699 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-10-19 20:09:02,759 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 20:09:02,760 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 20:09:02,762 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 20:09:02,762 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 20:09:02,763 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 20:09:02,763 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-19 20:09:02,763 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-19 20:09:02,764 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-19 20:09:02,764 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-19 20:09:02,764 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-19 20:09:02,765 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-19 20:09:02,766 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 20:09:02,766 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 20:09:02,767 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 20:09:02,767 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 20:09:02,767 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 20:09:02,767 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 20:09:02,768 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-19 20:09:02,768 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-19 20:09:02,768 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-19 20:09:02,769 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 20:09:02,769 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-19 20:09:02,769 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-19 20:09:02,769 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 20:09:02,770 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-19 20:09:02,770 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 20:09:02,770 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 20:09:02,771 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-19 20:09:02,771 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 20:09:02,771 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 20:09:02,771 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 20:09:02,772 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-19 20:09:02,773 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-19 20:09:02,774 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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e05071c3cebf6e34b512f97f960682899d887306 [2020-10-19 20:09:03,099 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 20:09:03,115 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 20:09:03,119 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 20:09:03,120 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 20:09:03,121 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 20:09:03,122 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/sum_15x0-2.c [2020-10-19 20:09:03,185 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56e508836/b16fcea1995e4b9a9c9bf0eb4aa359da/FLAG903cf5086 [2020-10-19 20:09:03,624 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 20:09:03,625 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/sum_15x0-2.c [2020-10-19 20:09:03,632 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56e508836/b16fcea1995e4b9a9c9bf0eb4aa359da/FLAG903cf5086 [2020-10-19 20:09:04,018 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56e508836/b16fcea1995e4b9a9c9bf0eb4aa359da [2020-10-19 20:09:04,022 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 20:09:04,029 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-19 20:09:04,033 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 20:09:04,033 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 20:09:04,037 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 20:09:04,039 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 08:09:04" (1/1) ... [2020-10-19 20:09:04,042 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2694d520 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 08:09:04, skipping insertion in model container [2020-10-19 20:09:04,042 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 08:09:04" (1/1) ... [2020-10-19 20:09:04,051 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 20:09:04,072 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 20:09:04,287 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 20:09:04,301 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 20:09:04,318 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 20:09:04,338 INFO L208 MainTranslator]: Completed translation [2020-10-19 20:09:04,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 08:09:04 WrapperNode [2020-10-19 20:09:04,339 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 20:09:04,340 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-19 20:09:04,340 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-19 20:09:04,341 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-19 20:09:04,350 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 08:09:04" (1/1) ... [2020-10-19 20:09:04,359 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 08:09:04" (1/1) ... [2020-10-19 20:09:04,441 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-19 20:09:04,442 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 20:09:04,442 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 20:09:04,442 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 20:09:04,452 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 08:09:04" (1/1) ... [2020-10-19 20:09:04,452 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 08:09:04" (1/1) ... [2020-10-19 20:09:04,453 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 08:09:04" (1/1) ... [2020-10-19 20:09:04,454 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 08:09:04" (1/1) ... [2020-10-19 20:09:04,457 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 08:09:04" (1/1) ... [2020-10-19 20:09:04,459 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 08:09:04" (1/1) ... [2020-10-19 20:09:04,460 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 08:09:04" (1/1) ... [2020-10-19 20:09:04,462 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 20:09:04,463 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 20:09:04,463 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 20:09:04,463 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 20:09:04,464 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 08:09:04" (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 [2020-10-19 20:09:04,545 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 20:09:04,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 20:09:04,546 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2020-10-19 20:09:04,546 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2020-10-19 20:09:04,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-19 20:09:04,547 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 20:09:04,806 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 20:09:04,807 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-19 20:09:04,810 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 08:09:04 BoogieIcfgContainer [2020-10-19 20:09:04,810 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 20:09:04,811 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-19 20:09:04,812 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-19 20:09:04,816 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-19 20:09:04,817 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-19 20:09:04,817 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 19.10 08:09:04" (1/3) ... [2020-10-19 20:09:04,819 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@187cfdda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.10 08:09:04, skipping insertion in model container [2020-10-19 20:09:04,819 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-19 20:09:04,820 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 08:09:04" (2/3) ... [2020-10-19 20:09:04,820 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@187cfdda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.10 08:09:04, skipping insertion in model container [2020-10-19 20:09:04,821 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-19 20:09:04,821 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 08:09:04" (3/3) ... [2020-10-19 20:09:04,823 INFO L373 chiAutomizerObserver]: Analyzing ICFG sum_15x0-2.c [2020-10-19 20:09:04,908 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-19 20:09:04,910 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-19 20:09:04,910 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-19 20:09:04,911 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 20:09:04,911 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 20:09:04,911 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-19 20:09:04,911 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 20:09:04,911 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-19 20:09:04,930 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states. [2020-10-19 20:09:04,959 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-19 20:09:04,959 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 20:09:04,960 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 20:09:04,969 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-10-19 20:09:04,970 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-19 20:09:04,970 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-10-19 20:09:04,970 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states. [2020-10-19 20:09:04,972 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-19 20:09:04,973 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 20:09:04,973 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 20:09:04,973 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-10-19 20:09:04,974 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-19 20:09:04,982 INFO L794 eck$LassoCheckResult]: Stem: 11#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(13);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 9#L-1true havoc main_#res;havoc main_#t~ret8, main_~a~0, main_~b~0, main_~result~0;main_~a~0 := 15;main_~b~0 := 0; 5#L16true call main_#t~ret8 := sum(main_~a~0, main_~b~0);< 10#sumENTRYtrue [2020-10-19 20:09:04,983 INFO L796 eck$LassoCheckResult]: Loop: 10#sumENTRYtrue ~n := #in~n;~m := #in~m; 4#L6true assume !(~n <= 0); 12#L9true call #t~ret7 := sum(~n - 1, 1 + ~m);< 10#sumENTRYtrue [2020-10-19 20:09:04,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:09:04,990 INFO L82 PathProgramCache]: Analyzing trace with hash 29878, now seen corresponding path program 1 times [2020-10-19 20:09:05,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 20:09:05,005 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291572909] [2020-10-19 20:09:05,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 20:09:05,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:09:05,146 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:09:05,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:09:05,186 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:09:05,207 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 20:09:05,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:09:05,209 INFO L82 PathProgramCache]: Analyzing trace with hash 46806, now seen corresponding path program 1 times [2020-10-19 20:09:05,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 20:09:05,211 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881660134] [2020-10-19 20:09:05,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 20:09:05,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:09:05,225 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:09:05,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:09:05,234 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:09:05,240 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 20:09:05,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:09:05,243 INFO L82 PathProgramCache]: Analyzing trace with hash 890112513, now seen corresponding path program 1 times [2020-10-19 20:09:05,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 20:09:05,245 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908443181] [2020-10-19 20:09:05,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 20:09:05,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:09:05,273 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:09:05,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:09:05,288 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:09:05,294 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 20:09:05,410 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 20:09:05,411 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 20:09:05,411 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 20:09:05,411 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 20:09:05,412 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-19 20:09:05,412 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:09:05,412 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 20:09:05,413 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 20:09:05,413 INFO L133 ssoRankerPreferences]: Filename of dumped script: sum_15x0-2.c_Iteration1_Loop [2020-10-19 20:09:05,413 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 20:09:05,413 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 20:09:05,433 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:09:05,445 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:09:05,448 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:09:05,452 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:09:05,462 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:09:05,467 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:09:05,535 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 20:09:05,536 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) [2020-10-19 20:09:05,545 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 20:09:05,546 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 [2020-10-19 20:09:05,559 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 20:09:05,559 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {sum_#t~ret7=0} Honda state: {sum_#t~ret7=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) [2020-10-19 20:09:05,605 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 20:09:05,605 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:09:05,610 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 20:09:05,611 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {sum_#res=0} Honda state: {sum_#res=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) [2020-10-19 20:09:05,668 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 20:09:05,669 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 [2020-10-19 20:09:05,673 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 20:09:05,673 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {sum_~m=0} Honda state: {sum_~m=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) [2020-10-19 20:09:05,726 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 20:09:05,727 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 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) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:09:05,792 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-19 20:09:05,793 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-19 20:09:05,854 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-19 20:09:05,856 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 20:09:05,856 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 20:09:05,857 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 20:09:05,857 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 20:09:05,857 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-19 20:09:05,857 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:09:05,857 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 20:09:05,857 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 20:09:05,857 INFO L133 ssoRankerPreferences]: Filename of dumped script: sum_15x0-2.c_Iteration1_Loop [2020-10-19 20:09:05,858 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 20:09:05,858 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 20:09:05,860 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:09:05,863 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:09:05,866 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:09:05,869 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:09:05,878 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:09:05,883 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:09:05,936 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 20:09:05,942 INFO L489 LassoAnalysis]: Using template 'affine'. 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) [2020-10-19 20:09:05,952 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 [2020-10-19 20:09:05,955 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:09:05,956 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:09:05,957 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:09:05,957 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:09:05,957 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:09:05,960 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:09:05,960 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:09:05,964 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 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:09:05,987 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 [2020-10-19 20:09:05,989 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:09:05,989 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:09:05,990 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:09:05,990 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:09:05,990 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:09:05,991 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:09:05,992 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:09:05,994 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 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:09:06,022 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 [2020-10-19 20:09:06,031 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:09:06,031 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:09:06,032 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:09:06,032 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:09:06,032 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:09:06,033 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:09:06,034 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:09:06,036 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 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:09:06,070 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 [2020-10-19 20:09:06,071 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:09:06,072 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:09:06,072 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:09:06,073 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:09:06,073 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:09:06,074 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:09:06,074 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:09:06,077 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-19 20:09:06,095 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-19 20:09:06,096 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 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:09:06,100 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-19 20:09:06,100 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-19 20:09:06,100 INFO L510 LassoAnalysis]: Proved termination. [2020-10-19 20:09:06,101 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(sum_#in~n) = 1*sum_#in~n Supporting invariants [] [2020-10-19 20:09:06,126 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-19 20:09:06,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:09:06,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:09:06,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-19 20:09:06,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 20:09:06,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:09:06,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-19 20:09:06,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 20:09:06,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 20:09:06,272 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 [2020-10-19 20:09:06,274 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states. Second operand 4 states. [2020-10-19 20:09:06,380 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states.. Second operand 4 states. Result 31 states and 36 transitions. Complement of second has 12 states. [2020-10-19 20:09:06,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-10-19 20:09:06,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-19 20:09:06,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2020-10-19 20:09:06,384 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 3 letters. Loop has 3 letters. [2020-10-19 20:09:06,386 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 20:09:06,386 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 6 letters. Loop has 3 letters. [2020-10-19 20:09:06,386 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 20:09:06,386 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 3 letters. Loop has 6 letters. [2020-10-19 20:09:06,387 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 20:09:06,388 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 36 transitions. [2020-10-19 20:09:06,392 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-19 20:09:06,395 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 0 states and 0 transitions. [2020-10-19 20:09:06,396 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-10-19 20:09:06,396 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-10-19 20:09:06,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-10-19 20:09:06,397 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-19 20:09:06,397 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 20:09:06,397 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 20:09:06,398 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 20:09:06,398 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-10-19 20:09:06,398 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-10-19 20:09:06,398 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-19 20:09:06,398 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-10-19 20:09:06,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 19.10 08:09:06 BoogieIcfgContainer [2020-10-19 20:09:06,405 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-10-19 20:09:06,405 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 20:09:06,405 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 20:09:06,406 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 20:09:06,406 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 08:09:04" (3/4) ... [2020-10-19 20:09:06,409 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-19 20:09:06,409 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 20:09:06,412 INFO L168 Benchmark]: Toolchain (without parser) took 2387.42 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 101.2 MB). Free memory was 950.6 MB in the beginning and 943.3 MB in the end (delta: 7.3 MB). Peak memory consumption was 108.4 MB. Max. memory is 11.5 GB. [2020-10-19 20:09:06,413 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 20:09:06,413 INFO L168 Benchmark]: CACSL2BoogieTranslator took 307.25 ms. Allocated memory is still 1.0 GB. Free memory was 950.6 MB in the beginning and 939.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2020-10-19 20:09:06,415 INFO L168 Benchmark]: Boogie Procedure Inliner took 101.29 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 101.2 MB). Free memory was 939.8 MB in the beginning and 1.1 GB in the end (delta: -157.1 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. [2020-10-19 20:09:06,416 INFO L168 Benchmark]: Boogie Preprocessor took 20.53 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2020-10-19 20:09:06,416 INFO L168 Benchmark]: RCFGBuilder took 348.05 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.2 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. [2020-10-19 20:09:06,417 INFO L168 Benchmark]: BuchiAutomizer took 1593.53 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 943.3 MB in the end (delta: 128.6 MB). Peak memory consumption was 128.6 MB. Max. memory is 11.5 GB. [2020-10-19 20:09:06,418 INFO L168 Benchmark]: Witness Printer took 4.39 ms. Allocated memory is still 1.1 GB. Free memory is still 943.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 20:09:06,423 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 307.25 ms. Allocated memory is still 1.0 GB. Free memory was 950.6 MB in the beginning and 939.8 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 101.29 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 101.2 MB). Free memory was 939.8 MB in the beginning and 1.1 GB in the end (delta: -157.1 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 20.53 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 348.05 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.2 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 1593.53 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 943.3 MB in the end (delta: 128.6 MB). Peak memory consumption was 128.6 MB. Max. memory is 11.5 GB. * Witness Printer took 4.39 ms. Allocated memory is still 1.1 GB. Free memory is still 943.3 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 1 terminating modules (0 trivial, 1 deterministic, 0 nondeterministic). One deterministic module has affine ranking function \old(n) and consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.5s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 1.1s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 0 states and ocurred in iteration 1. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 5 SDtfs, 8 SDslu, 2 SDs, 0 SdLazy, 18 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital18 mio100 ax100 hnf94 lsp70 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq150 hnf94 smp100 dnf100 smp100 tf111 neg100 sie110 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 20ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 3 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.1s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...