./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/recursive-simple/afterrec_2calls-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 9a8b2e8d 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_1.3.100.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/afterrec_2calls-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 601aa02d8073825ca8af8297fbd6b010f8103f99 .................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 08:00:29,442 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 08:00:29,445 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 08:00:29,476 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 08:00:29,476 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 08:00:29,478 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 08:00:29,480 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 08:00:29,482 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 08:00:29,484 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 08:00:29,486 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 08:00:29,487 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 08:00:29,489 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 08:00:29,489 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 08:00:29,490 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 08:00:29,492 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 08:00:29,493 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 08:00:29,495 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 08:00:29,496 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 08:00:29,499 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 08:00:29,501 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 08:00:29,503 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 08:00:29,504 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 08:00:29,506 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 08:00:29,507 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 08:00:29,510 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 08:00:29,510 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 08:00:29,511 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 08:00:29,512 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 08:00:29,512 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 08:00:29,513 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 08:00:29,514 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 08:00:29,515 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 08:00:29,515 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 08:00:29,516 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 08:00:29,518 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 08:00:29,518 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 08:00:29,519 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 08:00:29,519 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 08:00:29,519 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 08:00:29,520 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 08:00:29,521 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 08:00:29,522 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-10-20 08:00:29,554 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 08:00:29,555 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 08:00:29,556 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 08:00:29,556 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 08:00:29,557 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 08:00:29,557 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-20 08:00:29,557 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-20 08:00:29,557 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-20 08:00:29,558 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-20 08:00:29,558 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-20 08:00:29,558 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-20 08:00:29,558 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 08:00:29,559 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 08:00:29,559 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 08:00:29,559 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 08:00:29,559 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 08:00:29,560 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 08:00:29,560 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-20 08:00:29,560 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-20 08:00:29,560 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-20 08:00:29,561 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 08:00:29,561 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 08:00:29,561 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-20 08:00:29,561 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 08:00:29,561 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-20 08:00:29,562 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 08:00:29,562 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 08:00:29,562 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-20 08:00:29,563 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 08:00:29,563 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 08:00:29,563 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 08:00:29,563 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-20 08:00:29,564 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-20 08:00:29,565 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 -> 601aa02d8073825ca8af8297fbd6b010f8103f99 [2020-10-20 08:00:29,817 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 08:00:29,831 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 08:00:29,835 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 08:00:29,837 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 08:00:29,838 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 08:00:29,839 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/afterrec_2calls-1.c [2020-10-20 08:00:29,920 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf2d1e88d/a786b07e5940452ab187f7435da5c5ab/FLAGee9db95b4 [2020-10-20 08:00:30,541 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 08:00:30,543 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/afterrec_2calls-1.c [2020-10-20 08:00:30,552 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf2d1e88d/a786b07e5940452ab187f7435da5c5ab/FLAGee9db95b4 [2020-10-20 08:00:30,914 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf2d1e88d/a786b07e5940452ab187f7435da5c5ab [2020-10-20 08:00:30,919 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 08:00:30,927 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 08:00:30,928 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 08:00:30,928 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 08:00:30,933 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 08:00:30,934 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 08:00:30" (1/1) ... [2020-10-20 08:00:30,938 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39a944a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 08:00:30, skipping insertion in model container [2020-10-20 08:00:30,938 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 08:00:30" (1/1) ... [2020-10-20 08:00:30,949 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 08:00:30,971 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 08:00:31,215 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 08:00:31,234 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 08:00:31,258 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 08:00:31,274 INFO L208 MainTranslator]: Completed translation [2020-10-20 08:00:31,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 08:00:31 WrapperNode [2020-10-20 08:00:31,276 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 08:00:31,277 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 08:00:31,277 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 08:00:31,277 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 08:00:31,288 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 08:00:31" (1/1) ... [2020-10-20 08:00:31,306 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 08:00:31" (1/1) ... [2020-10-20 08:00:31,329 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 08:00:31,330 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 08:00:31,330 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 08:00:31,330 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 08:00:31,338 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 08:00:31" (1/1) ... [2020-10-20 08:00:31,339 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 08:00:31" (1/1) ... [2020-10-20 08:00:31,340 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 08:00:31" (1/1) ... [2020-10-20 08:00:31,340 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 08:00:31" (1/1) ... [2020-10-20 08:00:31,343 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 08:00:31" (1/1) ... [2020-10-20 08:00:31,345 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 08:00:31" (1/1) ... [2020-10-20 08:00:31,346 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 08:00:31" (1/1) ... [2020-10-20 08:00:31,348 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 08:00:31,348 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 08:00:31,349 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 08:00:31,349 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 08:00:31,350 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 08:00:31" (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 [2020-10-20 08:00:31,438 INFO L130 BoogieDeclarations]: Found specification of procedure f [2020-10-20 08:00:31,438 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2020-10-20 08:00:31,439 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 08:00:31,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 08:00:31,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 08:00:31,439 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2020-10-20 08:00:31,440 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2020-10-20 08:00:31,440 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 08:00:31,733 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 08:00:31,733 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-20 08:00:31,736 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 08:00:31 BoogieIcfgContainer [2020-10-20 08:00:31,737 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 08:00:31,738 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-20 08:00:31,738 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-20 08:00:31,745 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-20 08:00:31,747 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 08:00:31,747 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.10 08:00:30" (1/3) ... [2020-10-20 08:00:31,749 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4ceb4247 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.10 08:00:31, skipping insertion in model container [2020-10-20 08:00:31,750 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 08:00:31,750 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 08:00:31" (2/3) ... [2020-10-20 08:00:31,751 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4ceb4247 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.10 08:00:31, skipping insertion in model container [2020-10-20 08:00:31,751 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 08:00:31,752 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 08:00:31" (3/3) ... [2020-10-20 08:00:31,754 INFO L373 chiAutomizerObserver]: Analyzing ICFG afterrec_2calls-1.c [2020-10-20 08:00:31,831 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-20 08:00:31,843 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-20 08:00:31,843 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-20 08:00:31,843 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 08:00:31,844 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 08:00:31,844 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-20 08:00:31,844 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 08:00:31,845 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-20 08:00:31,864 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states. [2020-10-20 08:00:31,907 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2020-10-20 08:00:31,908 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 08:00:31,908 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 08:00:31,917 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-10-20 08:00:31,918 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2020-10-20 08:00:31,918 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-10-20 08:00:31,918 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states. [2020-10-20 08:00:31,921 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2020-10-20 08:00:31,921 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 08:00:31,922 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 08:00:31,922 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-10-20 08:00:31,922 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2020-10-20 08:00:31,930 INFO L794 eck$LassoCheckResult]: Stem: 14#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(20);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 13#L-1true havoc main_#res; 19#L23true call f(4);< 17#fENTRYtrue [2020-10-20 08:00:31,931 INFO L796 eck$LassoCheckResult]: Loop: 17#fENTRYtrue ~n := #in~n; 5#L9true assume !(~n < 3);#t~post9 := ~n;~n := #t~post9 - 1;havoc #t~post9; 3#L11true call f2(~n);< 8#f2ENTRYtrue ~n := #in~n; 12#L16true assume !(~n < 3);#t~post10 := ~n;~n := #t~post10 - 1;havoc #t~post10; 9#L18true call f(~n);< 17#fENTRYtrue [2020-10-20 08:00:31,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 08:00:31,937 INFO L82 PathProgramCache]: Analyzing trace with hash 40796, now seen corresponding path program 1 times [2020-10-20 08:00:31,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 08:00:31,946 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691480993] [2020-10-20 08:00:31,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 08:00:32,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:00:32,069 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:00:32,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:00:32,088 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:00:32,115 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 08:00:32,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 08:00:32,117 INFO L82 PathProgramCache]: Analyzing trace with hash 892079717, now seen corresponding path program 1 times [2020-10-20 08:00:32,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 08:00:32,118 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110408568] [2020-10-20 08:00:32,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 08:00:32,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:00:32,130 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:00:32,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:00:32,139 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:00:32,141 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 08:00:32,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 08:00:32,144 INFO L82 PathProgramCache]: Analyzing trace with hash 30440832, now seen corresponding path program 1 times [2020-10-20 08:00:32,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 08:00:32,144 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393463938] [2020-10-20 08:00:32,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 08:00:32,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:00:32,176 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:00:32,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:00:32,196 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:00:32,203 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 08:00:32,398 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 08:00:32,399 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 08:00:32,399 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 08:00:32,399 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 08:00:32,399 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-20 08:00:32,400 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:00:32,400 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 08:00:32,400 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 08:00:32,400 INFO L133 ssoRankerPreferences]: Filename of dumped script: afterrec_2calls-1.c_Iteration1_Loop [2020-10-20 08:00:32,401 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 08:00:32,401 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 08:00:32,421 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 08:00:32,427 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 08:00:32,453 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 08:00:32,459 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 08:00:32,466 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 08:00:32,471 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 08:00:32,672 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 08:00:32,673 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 [2020-10-20 08:00:32,682 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 08:00:32,682 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 08:00:32,693 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 08:00:32,693 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f2_#t~post10=0} Honda state: {f2_#t~post10=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) [2020-10-20 08:00:32,758 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 08:00:32,758 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 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) [2020-10-20 08:00:32,805 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-20 08:00:32,805 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 [2020-10-20 08:00:32,847 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-20 08:00:32,849 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 08:00:32,849 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 08:00:32,849 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 08:00:32,850 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 08:00:32,850 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 08:00:32,850 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:00:32,850 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 08:00:32,850 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 08:00:32,851 INFO L133 ssoRankerPreferences]: Filename of dumped script: afterrec_2calls-1.c_Iteration1_Loop [2020-10-20 08:00:32,851 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 08:00:32,851 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 08:00:32,853 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 08:00:32,861 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 08:00:32,865 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 08:00:32,869 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 08:00:32,872 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 08:00:32,875 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 08:00:32,918 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 08:00:32,925 INFO L489 LassoAnalysis]: Using template 'affine'. 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) [2020-10-20 08:00:32,936 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 [2020-10-20 08:00:32,939 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:00:32,939 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 08:00:32,940 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:00:32,940 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:00:32,940 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:00:32,943 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 08:00:32,944 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:00:32,947 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 08:00:32,952 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-10-20 08:00:32,952 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. 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 [2020-10-20 08:00:32,958 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 08:00:32,958 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-20 08:00:32,959 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 08:00:32,960 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(f_#in~n) = 1*f_#in~n Supporting invariants [] [2020-10-20 08:00:32,983 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-20 08:00:33,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 08:00:33,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 08:00:33,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 08:00:33,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 08:00:33,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 08:00:33,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-20 08:00:33,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 08:00:33,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 08:00:33,302 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 6 loop predicates [2020-10-20 08:00:33,303 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 20 states. Second operand 7 states. [2020-10-20 08:00:33,576 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 20 states.. Second operand 7 states. Result 61 states and 67 transitions. Complement of second has 26 states. [2020-10-20 08:00:33,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 9 states 1 stem states 6 non-accepting loop states 1 accepting loop states [2020-10-20 08:00:33,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-20 08:00:33,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 26 transitions. [2020-10-20 08:00:33,585 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 26 transitions. Stem has 3 letters. Loop has 6 letters. [2020-10-20 08:00:33,587 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 08:00:33,587 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 26 transitions. Stem has 9 letters. Loop has 6 letters. [2020-10-20 08:00:33,588 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 08:00:33,588 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 26 transitions. Stem has 3 letters. Loop has 12 letters. [2020-10-20 08:00:33,588 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 08:00:33,589 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 61 states and 67 transitions. [2020-10-20 08:00:33,595 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-20 08:00:33,599 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 61 states to 0 states and 0 transitions. [2020-10-20 08:00:33,600 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-10-20 08:00:33,601 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-10-20 08:00:33,601 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-10-20 08:00:33,601 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-20 08:00:33,602 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 08:00:33,602 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 08:00:33,602 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 08:00:33,602 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-10-20 08:00:33,602 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-10-20 08:00:33,602 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-20 08:00:33,603 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-10-20 08:00:33,610 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.10 08:00:33 BoogieIcfgContainer [2020-10-20 08:00:33,611 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-10-20 08:00:33,611 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 08:00:33,611 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 08:00:33,612 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 08:00:33,612 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 08:00:31" (3/4) ... [2020-10-20 08:00:33,617 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 08:00:33,617 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 08:00:33,621 INFO L168 Benchmark]: Toolchain (without parser) took 2698.73 ms. Allocated memory was 44.6 MB in the beginning and 52.4 MB in the end (delta: 7.9 MB). Free memory was 25.1 MB in the beginning and 20.0 MB in the end (delta: 5.1 MB). Peak memory consumption was 13.0 MB. Max. memory is 14.3 GB. [2020-10-20 08:00:33,621 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 33.0 MB. Free memory is still 11.1 MB. There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 08:00:33,622 INFO L168 Benchmark]: CACSL2BoogieTranslator took 348.83 ms. Allocated memory is still 44.6 MB. Free memory was 24.2 MB in the beginning and 14.2 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 14.3 GB. [2020-10-20 08:00:33,623 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.40 ms. Allocated memory is still 44.6 MB. Free memory was 14.2 MB in the beginning and 26.0 MB in the end (delta: -11.8 MB). Peak memory consumption was 5.1 MB. Max. memory is 14.3 GB. [2020-10-20 08:00:33,624 INFO L168 Benchmark]: Boogie Preprocessor took 18.14 ms. Allocated memory is still 44.6 MB. Free memory was 25.8 MB in the beginning and 24.9 MB in the end (delta: 966.8 kB). Peak memory consumption was 966.8 kB. Max. memory is 14.3 GB. [2020-10-20 08:00:33,625 INFO L168 Benchmark]: RCFGBuilder took 388.62 ms. Allocated memory is still 44.6 MB. Free memory was 24.7 MB in the beginning and 12.9 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 14.3 GB. [2020-10-20 08:00:33,626 INFO L168 Benchmark]: BuchiAutomizer took 1872.73 ms. Allocated memory was 44.6 MB in the beginning and 52.4 MB in the end (delta: 7.9 MB). Free memory was 12.7 MB in the beginning and 20.4 MB in the end (delta: -7.7 MB). Peak memory consumption was 163.5 kB. Max. memory is 14.3 GB. [2020-10-20 08:00:33,627 INFO L168 Benchmark]: Witness Printer took 6.09 ms. Allocated memory is still 52.4 MB. Free memory was 20.4 MB in the beginning and 20.0 MB in the end (delta: 465.7 kB). Peak memory consumption was 465.7 kB. Max. memory is 14.3 GB. [2020-10-20 08:00:33,632 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 33.0 MB. Free memory is still 11.1 MB. There was no memory consumed. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 348.83 ms. Allocated memory is still 44.6 MB. Free memory was 24.2 MB in the beginning and 14.2 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 52.40 ms. Allocated memory is still 44.6 MB. Free memory was 14.2 MB in the beginning and 26.0 MB in the end (delta: -11.8 MB). Peak memory consumption was 5.1 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 18.14 ms. Allocated memory is still 44.6 MB. Free memory was 25.8 MB in the beginning and 24.9 MB in the end (delta: 966.8 kB). Peak memory consumption was 966.8 kB. Max. memory is 14.3 GB. * RCFGBuilder took 388.62 ms. Allocated memory is still 44.6 MB. Free memory was 24.7 MB in the beginning and 12.9 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 14.3 GB. * BuchiAutomizer took 1872.73 ms. Allocated memory was 44.6 MB in the beginning and 52.4 MB in the end (delta: 7.9 MB). Free memory was 12.7 MB in the beginning and 20.4 MB in the end (delta: -7.7 MB). Peak memory consumption was 163.5 kB. Max. memory is 14.3 GB. * Witness Printer took 6.09 ms. Allocated memory is still 52.4 MB. Free memory was 20.4 MB in the beginning and 20.0 MB in the end (delta: 465.7 kB). Peak memory consumption was 465.7 kB. Max. memory is 14.3 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 9 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.7s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 1.0s. Construction of modules took 0.0s. Büchi inclusion checks took 0.5s. 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: 7 SDtfs, 12 SDslu, 9 SDs, 0 SdLazy, 56 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital11 mio100 ax100 hnf90 lsp100 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 33ms VariablesStem: 0 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 1 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...