./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/recursive-simple/sum_20x0-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 54858612 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/recursive-simple/sum_20x0-1.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 d709c141e865b9e316ae50970f4a7a44b0dfd8eb ........................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-5485861 [2020-10-26 05:45:50,277 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 05:45:50,280 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 05:45:50,322 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 05:45:50,323 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 05:45:50,324 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 05:45:50,326 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 05:45:50,328 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 05:45:50,331 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 05:45:50,332 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 05:45:50,333 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 05:45:50,335 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 05:45:50,336 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 05:45:50,337 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 05:45:50,338 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 05:45:50,340 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 05:45:50,341 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 05:45:50,343 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 05:45:50,345 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 05:45:50,347 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 05:45:50,350 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 05:45:50,351 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 05:45:50,353 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 05:45:50,354 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 05:45:50,357 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 05:45:50,358 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 05:45:50,358 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 05:45:50,359 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 05:45:50,360 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 05:45:50,361 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 05:45:50,362 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 05:45:50,363 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 05:45:50,364 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 05:45:50,365 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 05:45:50,367 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 05:45:50,367 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 05:45:50,368 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 05:45:50,369 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 05:45:50,369 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 05:45:50,370 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 05:45:50,371 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 05:45:50,372 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-10-26 05:45:50,409 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 05:45:50,410 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 05:45:50,411 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 05:45:50,412 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 05:45:50,412 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 05:45:50,412 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-26 05:45:50,413 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-26 05:45:50,413 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-26 05:45:50,413 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-26 05:45:50,414 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-26 05:45:50,414 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-26 05:45:50,414 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 05:45:50,415 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 05:45:50,415 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-26 05:45:50,415 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 05:45:50,416 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 05:45:50,416 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 05:45:50,416 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-26 05:45:50,417 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-26 05:45:50,417 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-26 05:45:50,417 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 05:45:50,417 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 05:45:50,418 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-26 05:45:50,418 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 05:45:50,418 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-26 05:45:50,419 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 05:45:50,419 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 05:45:50,419 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-26 05:45:50,420 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 05:45:50,420 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 05:45:50,420 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 05:45:50,420 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-26 05:45:50,422 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-26 05:45:50,422 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d709c141e865b9e316ae50970f4a7a44b0dfd8eb [2020-10-26 05:45:50,854 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 05:45:50,891 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 05:45:50,896 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 05:45:50,898 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 05:45:50,899 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 05:45:50,900 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/sum_20x0-1.c [2020-10-26 05:45:50,976 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/116913d96/4fd9ba6a287c4eddb122dec7f72e2e63/FLAG5dfe3f0e9 [2020-10-26 05:45:51,651 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 05:45:51,652 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/sum_20x0-1.c [2020-10-26 05:45:51,659 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/116913d96/4fd9ba6a287c4eddb122dec7f72e2e63/FLAG5dfe3f0e9 [2020-10-26 05:45:52,017 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/116913d96/4fd9ba6a287c4eddb122dec7f72e2e63 [2020-10-26 05:45:52,020 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 05:45:52,030 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-26 05:45:52,034 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 05:45:52,035 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 05:45:52,039 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 05:45:52,040 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 05:45:52" (1/1) ... [2020-10-26 05:45:52,043 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76ff6368 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 05:45:52, skipping insertion in model container [2020-10-26 05:45:52,044 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 05:45:52" (1/1) ... [2020-10-26 05:45:52,053 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 05:45:52,068 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 05:45:52,238 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 05:45:52,250 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 05:45:52,263 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 05:45:52,279 INFO L208 MainTranslator]: Completed translation [2020-10-26 05:45:52,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 05:45:52 WrapperNode [2020-10-26 05:45:52,280 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 05:45:52,281 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-26 05:45:52,281 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-26 05:45:52,281 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-26 05:45:52,291 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 05:45:52" (1/1) ... [2020-10-26 05:45:52,300 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 05:45:52" (1/1) ... [2020-10-26 05:45:52,318 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-26 05:45:52,319 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 05:45:52,319 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 05:45:52,319 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 05:45:52,329 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 05:45:52" (1/1) ... [2020-10-26 05:45:52,329 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 05:45:52" (1/1) ... [2020-10-26 05:45:52,331 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 05:45:52" (1/1) ... [2020-10-26 05:45:52,331 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 05:45:52" (1/1) ... [2020-10-26 05:45:52,334 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 05:45:52" (1/1) ... [2020-10-26 05:45:52,336 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 05:45:52" (1/1) ... [2020-10-26 05:45:52,337 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 05:45:52" (1/1) ... [2020-10-26 05:45:52,339 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 05:45:52,340 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 05:45:52,340 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 05:45:52,340 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 05:45:52,341 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 05:45:52" (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 [2020-10-26 05:45:52,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 05:45:52,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 05:45:52,426 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2020-10-26 05:45:52,426 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2020-10-26 05:45:52,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 05:45:52,427 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 05:45:52,653 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 05:45:52,653 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-26 05:45:52,656 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 05:45:52 BoogieIcfgContainer [2020-10-26 05:45:52,656 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 05:45:52,658 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-26 05:45:52,658 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-26 05:45:52,662 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-26 05:45:52,664 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-26 05:45:52,664 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 26.10 05:45:52" (1/3) ... [2020-10-26 05:45:52,666 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4de78f86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.10 05:45:52, skipping insertion in model container [2020-10-26 05:45:52,666 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-26 05:45:52,666 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 05:45:52" (2/3) ... [2020-10-26 05:45:52,667 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4de78f86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.10 05:45:52, skipping insertion in model container [2020-10-26 05:45:52,667 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-26 05:45:52,667 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 05:45:52" (3/3) ... [2020-10-26 05:45:52,670 INFO L373 chiAutomizerObserver]: Analyzing ICFG sum_20x0-1.c [2020-10-26 05:45:52,748 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-26 05:45:52,748 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-26 05:45:52,748 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-26 05:45:52,749 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 05:45:52,749 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 05:45:52,749 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-26 05:45:52,749 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 05:45:52,749 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-26 05:45:52,769 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states. [2020-10-26 05:45:52,799 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-26 05:45:52,799 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 05:45:52,800 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 05:45:52,817 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-10-26 05:45:52,819 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-26 05:45:52,819 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-10-26 05:45:52,820 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states. [2020-10-26 05:45:52,825 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-26 05:45:52,826 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 05:45:52,826 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 05:45:52,826 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-10-26 05:45:52,826 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-26 05:45:52,838 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 := 20;main_~b~0 := 0; 5#L16true call main_#t~ret8 := sum(main_~a~0, main_~b~0);< 10#sumENTRYtrue [2020-10-26 05:45:52,838 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 [2020-10-26 05:45:52,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 05:45:52,847 INFO L82 PathProgramCache]: Analyzing trace with hash 29878, now seen corresponding path program 1 times [2020-10-26 05:45:52,860 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 05:45:52,861 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832809927] [2020-10-26 05:45:52,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 05:45:53,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 05:45:53,002 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 05:45:53,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 05:45:53,023 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 05:45:53,050 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 05:45:53,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 05:45:53,053 INFO L82 PathProgramCache]: Analyzing trace with hash 46806, now seen corresponding path program 1 times [2020-10-26 05:45:53,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 05:45:53,053 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23422121] [2020-10-26 05:45:53,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 05:45:53,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 05:45:53,061 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 05:45:53,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 05:45:53,067 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 05:45:53,069 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 05:45:53,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 05:45:53,073 INFO L82 PathProgramCache]: Analyzing trace with hash 890112513, now seen corresponding path program 1 times [2020-10-26 05:45:53,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 05:45:53,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808135331] [2020-10-26 05:45:53,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 05:45:53,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 05:45:53,099 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 05:45:53,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 05:45:53,125 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 05:45:53,132 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 05:45:53,332 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 05:45:53,333 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 05:45:53,333 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 05:45:53,333 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 05:45:53,334 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-26 05:45:53,334 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:45:53,334 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 05:45:53,334 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 05:45:53,334 INFO L133 ssoRankerPreferences]: Filename of dumped script: sum_20x0-1.c_Iteration1_Loop [2020-10-26 05:45:53,335 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 05:45:53,335 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 05:45:53,359 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:45:53,374 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:45:53,382 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:45:53,391 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:45:53,425 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:45:53,436 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:45:53,556 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 05:45:53,556 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:45:53,565 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 05:45:53,565 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 05:45:53,575 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 05:45:53,575 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) [2020-10-26 05:45:53,621 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 05:45:53,621 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 [2020-10-26 05:45:53,626 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 05:45:53,626 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) [2020-10-26 05:45:53,668 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 05:45:53,668 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 [2020-10-26 05:45:53,673 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 05:45:53,673 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) [2020-10-26 05:45:53,716 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 05:45:53,717 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 [2020-10-26 05:45:53,755 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-26 05:45:53,756 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 05:45:53,811 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-26 05:45:53,813 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 05:45:53,814 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 05:45:53,814 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 05:45:53,814 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 05:45:53,814 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-26 05:45:53,814 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:45:53,814 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 05:45:53,814 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 05:45:53,815 INFO L133 ssoRankerPreferences]: Filename of dumped script: sum_20x0-1.c_Iteration1_Loop [2020-10-26 05:45:53,815 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 05:45:53,815 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 05:45:53,817 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:45:53,820 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:45:53,823 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:45:53,827 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:45:53,835 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:45:53,840 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:45:53,932 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 05:45:53,939 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) [2020-10-26 05:45:53,955 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 [2020-10-26 05:45:53,957 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 05:45:53,958 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 05:45:53,958 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 05:45:53,959 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 05:45:53,959 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 05:45:53,962 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 05:45:53,963 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 [2020-10-26 05:45:53,969 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) [2020-10-26 05:45:54,007 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 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:45:54,010 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 05:45:54,010 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 05:45:54,011 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 05:45:54,011 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 05:45:54,011 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 05:45:54,012 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 05:45:54,012 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 05:45:54,014 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 [2020-10-26 05:45:54,047 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 [2020-10-26 05:45:54,055 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 05:45:54,056 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 05:45:54,056 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 05:45:54,056 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 05:45:54,056 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 05:45:54,058 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 05:45:54,058 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 05:45:54,063 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 [2020-10-26 05:45:54,091 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 05:45:54,093 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 05:45:54,093 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 05:45:54,093 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 05:45:54,093 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 05:45:54,093 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 05:45:54,095 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 05:45:54,095 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 05:45:54,098 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-26 05:45:54,104 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-26 05:45:54,104 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) [2020-10-26 05:45:54,114 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-26 05:45:54,115 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-26 05:45:54,115 INFO L510 LassoAnalysis]: Proved termination. [2020-10-26 05:45:54,116 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(sum_#in~n) = 1*sum_#in~n Supporting invariants [] Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:45:54,151 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-26 05:45:54,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 05:45:54,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 05:45:54,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-26 05:45:54,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 05:45:54,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 05:45:54,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-26 05:45:54,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 05:45:54,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 05:45:54,335 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 [2020-10-26 05:45:54,336 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states. Second operand 4 states. [2020-10-26 05:45:54,447 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. [2020-10-26 05:45:54,448 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 [2020-10-26 05:45:54,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-26 05:45:54,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2020-10-26 05:45:54,453 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 3 letters. Loop has 3 letters. [2020-10-26 05:45:54,454 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 05:45:54,455 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 6 letters. Loop has 3 letters. [2020-10-26 05:45:54,455 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 05:45:54,455 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 3 letters. Loop has 6 letters. [2020-10-26 05:45:54,455 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 05:45:54,456 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 36 transitions. [2020-10-26 05:45:54,461 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-26 05:45:54,464 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 0 states and 0 transitions. [2020-10-26 05:45:54,465 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-10-26 05:45:54,465 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-10-26 05:45:54,466 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-10-26 05:45:54,466 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-26 05:45:54,466 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 05:45:54,467 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 05:45:54,467 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 05:45:54,467 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-10-26 05:45:54,467 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-10-26 05:45:54,467 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-26 05:45:54,468 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-10-26 05:45:54,474 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 26.10 05:45:54 BoogieIcfgContainer [2020-10-26 05:45:54,475 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-10-26 05:45:54,475 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-26 05:45:54,476 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-26 05:45:54,476 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-26 05:45:54,477 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 05:45:52" (3/4) ... [2020-10-26 05:45:54,480 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-26 05:45:54,480 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-26 05:45:54,483 INFO L168 Benchmark]: Toolchain (without parser) took 2459.20 ms. Allocated memory was 46.1 MB in the beginning and 71.3 MB in the end (delta: 25.2 MB). Free memory was 23.0 MB in the beginning and 35.0 MB in the end (delta: -11.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-10-26 05:45:54,484 INFO L168 Benchmark]: CDTParser took 0.62 ms. Allocated memory is still 46.1 MB. Free memory was 30.3 MB in the beginning and 30.3 MB in the end (delta: 35.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 05:45:54,485 INFO L168 Benchmark]: CACSL2BoogieTranslator took 246.02 ms. Allocated memory is still 46.1 MB. Free memory was 22.4 MB in the beginning and 26.9 MB in the end (delta: -4.5 MB). Peak memory consumption was 9.6 MB. Max. memory is 16.1 GB. [2020-10-26 05:45:54,486 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.25 ms. Allocated memory is still 46.1 MB. Free memory was 26.9 MB in the beginning and 25.5 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 05:45:54,486 INFO L168 Benchmark]: Boogie Preprocessor took 20.08 ms. Allocated memory is still 46.1 MB. Free memory was 25.5 MB in the beginning and 24.6 MB in the end (delta: 909.1 kB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-10-26 05:45:54,487 INFO L168 Benchmark]: RCFGBuilder took 316.40 ms. Allocated memory was 46.1 MB in the beginning and 58.7 MB in the end (delta: 12.6 MB). Free memory was 24.5 MB in the beginning and 37.9 MB in the end (delta: -13.4 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. [2020-10-26 05:45:54,489 INFO L168 Benchmark]: BuchiAutomizer took 1817.17 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 37.7 MB in the beginning and 35.0 MB in the end (delta: 2.8 MB). Peak memory consumption was 14.3 MB. Max. memory is 16.1 GB. [2020-10-26 05:45:54,489 INFO L168 Benchmark]: Witness Printer took 5.01 ms. Allocated memory is still 71.3 MB. Free memory is still 35.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 05:45:54,495 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.62 ms. Allocated memory is still 46.1 MB. Free memory was 30.3 MB in the beginning and 30.3 MB in the end (delta: 35.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 246.02 ms. Allocated memory is still 46.1 MB. Free memory was 22.4 MB in the beginning and 26.9 MB in the end (delta: -4.5 MB). Peak memory consumption was 9.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 37.25 ms. Allocated memory is still 46.1 MB. Free memory was 26.9 MB in the beginning and 25.5 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 20.08 ms. Allocated memory is still 46.1 MB. Free memory was 25.5 MB in the beginning and 24.6 MB in the end (delta: 909.1 kB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 316.40 ms. Allocated memory was 46.1 MB in the beginning and 58.7 MB in the end (delta: 12.6 MB). Free memory was 24.5 MB in the beginning and 37.9 MB in the end (delta: -13.4 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 1817.17 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 37.7 MB in the beginning and 35.0 MB in the end (delta: 2.8 MB). Peak memory consumption was 14.3 MB. Max. memory is 16.1 GB. * Witness Printer took 5.01 ms. Allocated memory is still 71.3 MB. Free memory is still 35.0 MB. There was no memory consumed. Max. memory is 16.1 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 1.7s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 1.3s. 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: 29ms 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...