./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/loop-invgen/down.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 906a4fb5 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/loop-invgen/down.i -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 2dbb8f693d4595fbb0db5e58fd784bc92a5adb54 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-906a4fb [2020-10-19 19:13:00,196 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 19:13:00,199 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 19:13:00,224 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 19:13:00,224 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 19:13:00,226 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 19:13:00,227 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 19:13:00,229 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 19:13:00,231 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 19:13:00,232 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 19:13:00,237 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 19:13:00,238 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 19:13:00,238 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 19:13:00,243 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 19:13:00,244 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 19:13:00,245 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 19:13:00,246 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 19:13:00,250 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 19:13:00,254 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 19:13:00,259 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 19:13:00,261 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 19:13:00,262 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 19:13:00,264 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 19:13:00,266 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 19:13:00,271 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 19:13:00,273 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 19:13:00,273 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 19:13:00,275 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 19:13:00,276 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 19:13:00,277 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 19:13:00,278 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 19:13:00,279 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 19:13:00,280 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 19:13:00,281 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 19:13:00,290 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 19:13:00,291 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 19:13:00,292 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 19:13:00,293 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 19:13:00,294 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 19:13:00,295 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 19:13:00,296 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 19:13:00,297 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-10-19 19:13:00,342 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 19:13:00,343 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 19:13:00,345 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 19:13:00,345 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 19:13:00,346 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 19:13:00,346 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-19 19:13:00,346 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-19 19:13:00,346 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-19 19:13:00,347 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-19 19:13:00,347 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-19 19:13:00,348 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-19 19:13:00,348 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 19:13:00,349 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 19:13:00,349 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 19:13:00,349 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 19:13:00,350 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 19:13:00,350 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 19:13:00,350 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-19 19:13:00,350 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-19 19:13:00,351 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-19 19:13:00,351 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 19:13:00,351 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-19 19:13:00,351 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-19 19:13:00,352 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 19:13:00,352 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-19 19:13:00,352 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 19:13:00,353 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 19:13:00,353 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-19 19:13:00,353 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 19:13:00,353 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 19:13:00,354 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 19:13:00,354 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-19 19:13:00,356 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-19 19:13:00,356 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 -> 2dbb8f693d4595fbb0db5e58fd784bc92a5adb54 [2020-10-19 19:13:00,670 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 19:13:00,682 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 19:13:00,684 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 19:13:00,686 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 19:13:00,686 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 19:13:00,687 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-invgen/down.i [2020-10-19 19:13:00,755 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57a54ec17/76f0a6ba57d24b58a615f4f4e5309f85/FLAG27887e042 [2020-10-19 19:13:01,234 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 19:13:01,235 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/down.i [2020-10-19 19:13:01,242 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57a54ec17/76f0a6ba57d24b58a615f4f4e5309f85/FLAG27887e042 [2020-10-19 19:13:01,597 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57a54ec17/76f0a6ba57d24b58a615f4f4e5309f85 [2020-10-19 19:13:01,600 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 19:13:01,607 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-19 19:13:01,608 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 19:13:01,608 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 19:13:01,612 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 19:13:01,613 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 07:13:01" (1/1) ... [2020-10-19 19:13:01,615 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e7fe299 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:13:01, skipping insertion in model container [2020-10-19 19:13:01,616 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 07:13:01" (1/1) ... [2020-10-19 19:13:01,623 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 19:13:01,643 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 19:13:01,816 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 19:13:01,827 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 19:13:01,845 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 19:13:01,861 INFO L208 MainTranslator]: Completed translation [2020-10-19 19:13:01,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:13:01 WrapperNode [2020-10-19 19:13:01,862 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 19:13:01,863 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-19 19:13:01,863 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-19 19:13:01,863 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-19 19:13:01,927 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:13:01" (1/1) ... [2020-10-19 19:13:01,935 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:13:01" (1/1) ... [2020-10-19 19:13:01,956 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-19 19:13:01,956 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 19:13:01,956 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 19:13:01,956 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 19:13:01,964 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:13:01" (1/1) ... [2020-10-19 19:13:01,965 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:13:01" (1/1) ... [2020-10-19 19:13:01,966 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:13:01" (1/1) ... [2020-10-19 19:13:01,966 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:13:01" (1/1) ... [2020-10-19 19:13:01,970 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:13:01" (1/1) ... [2020-10-19 19:13:01,975 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:13:01" (1/1) ... [2020-10-19 19:13:01,976 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:13:01" (1/1) ... [2020-10-19 19:13:01,978 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 19:13:01,978 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 19:13:01,978 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 19:13:01,978 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 19:13:01,979 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:13:01" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 19:13:02,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-19 19:13:02,048 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 19:13:02,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 19:13:02,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 19:13:02,276 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 19:13:02,276 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-19 19:13:02,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 07:13:02 BoogieIcfgContainer [2020-10-19 19:13:02,279 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 19:13:02,281 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-19 19:13:02,281 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-19 19:13:02,286 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-19 19:13:02,288 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-19 19:13:02,288 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 19.10 07:13:01" (1/3) ... [2020-10-19 19:13:02,289 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5c3364bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.10 07:13:02, skipping insertion in model container [2020-10-19 19:13:02,290 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-19 19:13:02,290 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:13:01" (2/3) ... [2020-10-19 19:13:02,290 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5c3364bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.10 07:13:02, skipping insertion in model container [2020-10-19 19:13:02,291 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-19 19:13:02,291 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 07:13:02" (3/3) ... [2020-10-19 19:13:02,293 INFO L373 chiAutomizerObserver]: Analyzing ICFG down.i [2020-10-19 19:13:02,408 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-19 19:13:02,409 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-19 19:13:02,409 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-19 19:13:02,409 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 19:13:02,409 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 19:13:02,409 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-19 19:13:02,409 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 19:13:02,410 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-19 19:13:02,422 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states. [2020-10-19 19:13:02,441 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2020-10-19 19:13:02,442 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 19:13:02,442 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 19:13:02,448 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-10-19 19:13:02,448 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-10-19 19:13:02,448 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-10-19 19:13:02,448 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states. [2020-10-19 19:13:02,450 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2020-10-19 19:13:02,450 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 19:13:02,450 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 19:13:02,450 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-10-19 19:13:02,451 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-10-19 19:13:02,457 INFO L794 eck$LassoCheckResult]: Stem: 12#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9); 9#L-1true havoc main_#res;havoc main_#t~nondet3, main_#t~post4, main_#t~post5, main_#t~post6, main_#t~post7, main_~n~0, main_~k~0, main_~i~0, main_~j~0;havoc main_~n~0;main_~k~0 := 0;main_~i~0 := 0;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3; 5#L29-2true [2020-10-19 19:13:02,457 INFO L796 eck$LassoCheckResult]: Loop: 5#L29-2true assume !!(main_~i~0 < main_~n~0);main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4;main_#t~post5 := main_~k~0;main_~k~0 := 1 + main_#t~post5;havoc main_#t~post5; 5#L29-2true [2020-10-19 19:13:02,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 19:13:02,463 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2020-10-19 19:13:02,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 19:13:02,471 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230155824] [2020-10-19 19:13:02,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 19:13:02,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 19:13:02,574 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 19:13:02,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 19:13:02,588 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 19:13:02,611 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 19:13:02,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 19:13:02,613 INFO L82 PathProgramCache]: Analyzing trace with hash 42, now seen corresponding path program 1 times [2020-10-19 19:13:02,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 19:13:02,614 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275956579] [2020-10-19 19:13:02,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 19:13:02,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 19:13:02,620 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 19:13:02,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 19:13:02,624 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 19:13:02,631 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 19:13:02,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 19:13:02,633 INFO L82 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2020-10-19 19:13:02,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 19:13:02,634 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971199946] [2020-10-19 19:13:02,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 19:13:02,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 19:13:02,653 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 19:13:02,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 19:13:02,666 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 19:13:02,670 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 19:13:02,728 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 19:13:02,729 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 19:13:02,729 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 19:13:02,729 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 19:13:02,730 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-19 19:13:02,730 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 19:13:02,730 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 19:13:02,730 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 19:13:02,730 INFO L133 ssoRankerPreferences]: Filename of dumped script: down.i_Iteration1_Loop [2020-10-19 19:13:02,731 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 19:13:02,731 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 19:13:02,752 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 19:13:02,768 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 19:13:02,783 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 19:13:02,787 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 19:13:02,852 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 19:13:02,853 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 19:13:02,864 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 19:13:02,865 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-19 19:13:02,876 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 19:13:02,876 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post5=0} Honda state: {ULTIMATE.start_main_#t~post5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 19:13:02,912 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 19:13:02,913 INFO L160 nArgumentSynthesizer]: Using integer mode. 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) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 19:13:02,948 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-19 19:13:02,948 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-19 19:13:03,092 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-19 19:13:03,094 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 19:13:03,095 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 19:13:03,095 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 19:13:03,095 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 19:13:03,095 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-19 19:13:03,095 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 19:13:03,095 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 19:13:03,096 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 19:13:03,096 INFO L133 ssoRankerPreferences]: Filename of dumped script: down.i_Iteration1_Loop [2020-10-19 19:13:03,096 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 19:13:03,096 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 19:13:03,099 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 19:13:03,103 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 19:13:03,112 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 19:13:03,117 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 19:13:03,165 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 19:13:03,172 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) [2020-10-19 19:13:03,184 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 19:13:03,186 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 19:13:03,187 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 19:13:03,187 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 19:13:03,187 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 19:13:03,188 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 19:13:03,192 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 19:13:03,193 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 [2020-10-19 19:13:03,196 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 19:13:03,246 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 19:13:03,248 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 19:13:03,248 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 19:13:03,249 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 19:13:03,249 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 19:13:03,249 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 19:13:03,252 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 19:13:03,252 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 19:13:03,259 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-19 19:13:03,271 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2020-10-19 19:13:03,271 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 19:13:03,280 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-19 19:13:03,281 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-19 19:13:03,282 INFO L510 LassoAnalysis]: Proved termination. [2020-10-19 19:13:03,283 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~n~0, ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~n~0 - 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2020-10-19 19:13:03,310 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-19 19:13:03,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 19:13:03,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 19:13:03,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 19:13:03,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 19:13:03,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 19:13:03,377 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-19 19:13:03,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 19:13:03,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 19:13:03,396 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2020-10-19 19:13:03,398 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 14 states. Second operand 2 states. [2020-10-19 19:13:03,451 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 14 states.. Second operand 2 states. Result 35 states and 47 transitions. Complement of second has 5 states. [2020-10-19 19:13:03,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-19 19:13:03,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-10-19 19:13:03,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 32 transitions. [2020-10-19 19:13:03,457 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 32 transitions. Stem has 2 letters. Loop has 1 letters. [2020-10-19 19:13:03,458 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 19:13:03,458 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 32 transitions. Stem has 3 letters. Loop has 1 letters. [2020-10-19 19:13:03,458 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 19:13:03,459 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 32 transitions. Stem has 2 letters. Loop has 2 letters. [2020-10-19 19:13:03,459 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 19:13:03,460 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 47 transitions. [2020-10-19 19:13:03,464 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-19 19:13:03,469 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 8 states and 10 transitions. [2020-10-19 19:13:03,471 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2020-10-19 19:13:03,471 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2020-10-19 19:13:03,472 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 10 transitions. [2020-10-19 19:13:03,472 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-19 19:13:03,472 INFO L691 BuchiCegarLoop]: Abstraction has 8 states and 10 transitions. [2020-10-19 19:13:03,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 10 transitions. [2020-10-19 19:13:03,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2020-10-19 19:13:03,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-10-19 19:13:03,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 10 transitions. [2020-10-19 19:13:03,500 INFO L714 BuchiCegarLoop]: Abstraction has 8 states and 10 transitions. [2020-10-19 19:13:03,501 INFO L594 BuchiCegarLoop]: Abstraction has 8 states and 10 transitions. [2020-10-19 19:13:03,501 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-10-19 19:13:03,501 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 10 transitions. [2020-10-19 19:13:03,502 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-19 19:13:03,502 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 19:13:03,502 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 19:13:03,502 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-10-19 19:13:03,503 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-19 19:13:03,503 INFO L794 eck$LassoCheckResult]: Stem: 86#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9); 81#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~post4, main_#t~post5, main_#t~post6, main_#t~post7, main_~n~0, main_~k~0, main_~i~0, main_~j~0;havoc main_~n~0;main_~k~0 := 0;main_~i~0 := 0;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3; 82#L29-2 assume !(main_~i~0 < main_~n~0); 83#L29-3 main_~j~0 := main_~n~0; 84#L34-2 [2020-10-19 19:13:03,503 INFO L796 eck$LassoCheckResult]: Loop: 84#L34-2 assume !!(main_~j~0 > 0);__VERIFIER_assert_#in~cond := (if main_~k~0 > 0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 87#L18 assume !(0 == __VERIFIER_assert_~cond); 85#L18-2 main_#t~post6 := main_~j~0;main_~j~0 := main_#t~post6 - 1;havoc main_#t~post6;main_#t~post7 := main_~k~0;main_~k~0 := main_#t~post7 - 1;havoc main_#t~post7; 84#L34-2 [2020-10-19 19:13:03,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 19:13:03,504 INFO L82 PathProgramCache]: Analyzing trace with hash 925737, now seen corresponding path program 1 times [2020-10-19 19:13:03,504 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 19:13:03,504 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221124456] [2020-10-19 19:13:03,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 19:13:03,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 19:13:03,517 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 19:13:03,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 19:13:03,527 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 19:13:03,531 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 19:13:03,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 19:13:03,532 INFO L82 PathProgramCache]: Analyzing trace with hash 54074, now seen corresponding path program 1 times [2020-10-19 19:13:03,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 19:13:03,533 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185322565] [2020-10-19 19:13:03,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 19:13:03,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 19:13:03,542 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 19:13:03,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 19:13:03,548 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 19:13:03,553 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 19:13:03,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 19:13:03,555 INFO L82 PathProgramCache]: Analyzing trace with hash 1808851474, now seen corresponding path program 1 times [2020-10-19 19:13:03,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 19:13:03,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41518583] [2020-10-19 19:13:03,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 19:13:03,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 19:13:03,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 19:13:03,644 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41518583] [2020-10-19 19:13:03,645 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 19:13:03,645 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-19 19:13:03,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629411646] [2020-10-19 19:13:03,728 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 19:13:03,728 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 19:13:03,728 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 19:13:03,728 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 19:13:03,729 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-19 19:13:03,729 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 19:13:03,729 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 19:13:03,729 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 19:13:03,729 INFO L133 ssoRankerPreferences]: Filename of dumped script: down.i_Iteration2_Loop [2020-10-19 19:13:03,730 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 19:13:03,730 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 19:13:03,731 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 19:13:03,738 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 19:13:03,746 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 19:13:03,750 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 19:13:03,758 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 19:13:03,832 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 19:13:03,832 INFO L404 LassoAnalysis]: Checking for nontermination... 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) [2020-10-19 19:13:03,844 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 19:13:03,845 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 19:13:03,849 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 19:13:03,849 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post6=0} Honda state: {ULTIMATE.start_main_#t~post6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 19:13:03,895 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 19:13:03,895 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-19 19:13:03,900 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 19:13:03,901 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start___VERIFIER_assert_~cond=1, ULTIMATE.start___VERIFIER_assert_#in~cond=1} Honda state: {ULTIMATE.start___VERIFIER_assert_~cond=1, ULTIMATE.start___VERIFIER_assert_#in~cond=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] 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) [2020-10-19 19:13:03,940 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 19:13:03,940 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 19:13:03,944 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 19:13:03,945 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post7=0} Honda state: {ULTIMATE.start_main_#t~post7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 19:13:03,981 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 19:13:03,982 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 19:13:04,023 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-19 19:13:04,024 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-19 19:13:04,053 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-19 19:13:04,055 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 19:13:04,055 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 19:13:04,055 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 19:13:04,056 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 19:13:04,056 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-19 19:13:04,056 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 19:13:04,056 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 19:13:04,056 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 19:13:04,056 INFO L133 ssoRankerPreferences]: Filename of dumped script: down.i_Iteration2_Loop [2020-10-19 19:13:04,056 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 19:13:04,057 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 19:13:04,063 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 19:13:04,070 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 19:13:04,078 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 19:13:04,081 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 19:13:04,088 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 19:13:04,158 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 19:13:04,158 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 19:13:04,176 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 19:13:04,180 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 19:13:04,180 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 19:13:04,181 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 19:13:04,181 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 19:13:04,181 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 19:13:04,183 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 19:13:04,184 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 19:13:04,188 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 19:13:04,238 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 19:13:04,240 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 19:13:04,241 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 19:13:04,241 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 19:13:04,241 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 19:13:04,241 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 19:13:04,243 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 19:13:04,244 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 19:13:04,248 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 19:13:04,304 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 19:13:04,306 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 19:13:04,306 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 19:13:04,306 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 19:13:04,307 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 19:13:04,307 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 19:13:04,308 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 19:13:04,308 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 19:13:04,311 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 19:13:04,368 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 19:13:04,370 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 19:13:04,370 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 19:13:04,370 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 19:13:04,371 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 19:13:04,371 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 19:13:04,372 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 19:13:04,373 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 19:13:04,376 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-19 19:13:04,379 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-10-19 19:13:04,379 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 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 19:13:04,392 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-19 19:13:04,392 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-19 19:13:04,392 INFO L510 LassoAnalysis]: Proved termination. [2020-10-19 19:13:04,392 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~k~0) = 1*ULTIMATE.start_main_~k~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 19:13:04,429 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-19 19:13:04,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 19:13:04,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 19:13:04,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 19:13:04,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 19:13:04,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 19:13:04,468 WARN L261 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-19 19:13:04,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 19:13:04,520 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-10-19 19:13:04,521 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 19:13:04,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 19:13:04,537 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2020-10-19 19:13:04,537 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 10 transitions. cyclomatic complexity: 4 Second operand 4 states. [2020-10-19 19:13:04,584 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 10 transitions. cyclomatic complexity: 4. Second operand 4 states. Result 11 states and 14 transitions. Complement of second has 6 states. [2020-10-19 19:13:04,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-10-19 19:13:04,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-19 19:13:04,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2020-10-19 19:13:04,586 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 4 letters. Loop has 3 letters. [2020-10-19 19:13:04,587 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 19:13:04,587 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 7 letters. Loop has 3 letters. [2020-10-19 19:13:04,588 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 19:13:04,588 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 4 letters. Loop has 6 letters. [2020-10-19 19:13:04,588 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 19:13:04,588 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 14 transitions. [2020-10-19 19:13:04,590 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-19 19:13:04,590 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 0 states and 0 transitions. [2020-10-19 19:13:04,590 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-10-19 19:13:04,591 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-10-19 19:13:04,591 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-10-19 19:13:04,591 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-19 19:13:04,591 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 19:13:04,591 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 19:13:04,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 19:13:04,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 19:13:04,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-19 19:13:04,598 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 5 states. [2020-10-19 19:13:04,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 19:13:04,603 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-10-19 19:13:04,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-19 19:13:04,603 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2020-10-19 19:13:04,604 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-19 19:13:04,604 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2020-10-19 19:13:04,604 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-10-19 19:13:04,604 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-10-19 19:13:04,605 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-10-19 19:13:04,605 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-19 19:13:04,605 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 19:13:04,605 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 19:13:04,605 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 19:13:04,606 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-10-19 19:13:04,606 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-10-19 19:13:04,606 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-19 19:13:04,606 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-10-19 19:13:04,615 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 19.10 07:13:04 BoogieIcfgContainer [2020-10-19 19:13:04,615 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-10-19 19:13:04,616 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 19:13:04,616 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 19:13:04,616 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 19:13:04,617 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 07:13:02" (3/4) ... [2020-10-19 19:13:04,622 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-19 19:13:04,622 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 19:13:04,625 INFO L168 Benchmark]: Toolchain (without parser) took 3022.17 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 958.6 MB in the beginning and 894.9 MB in the end (delta: 63.8 MB). Peak memory consumption was 199.6 MB. Max. memory is 11.5 GB. [2020-10-19 19:13:04,626 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 19:13:04,627 INFO L168 Benchmark]: CACSL2BoogieTranslator took 254.29 ms. Allocated memory is still 1.0 GB. Free memory was 958.6 MB in the beginning and 947.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2020-10-19 19:13:04,629 INFO L168 Benchmark]: Boogie Procedure Inliner took 92.92 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 947.9 MB in the beginning and 1.1 GB in the end (delta: -184.2 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2020-10-19 19:13:04,630 INFO L168 Benchmark]: Boogie Preprocessor took 21.74 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2020-10-19 19:13:04,631 INFO L168 Benchmark]: RCFGBuilder took 301.40 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.1 MB). Peak memory consumption was 20.1 MB. Max. memory is 11.5 GB. [2020-10-19 19:13:04,632 INFO L168 Benchmark]: BuchiAutomizer took 2334.58 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 894.9 MB in the end (delta: 210.6 MB). Peak memory consumption was 210.6 MB. Max. memory is 11.5 GB. [2020-10-19 19:13:04,632 INFO L168 Benchmark]: Witness Printer took 6.52 ms. Allocated memory is still 1.2 GB. Free memory is still 894.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 19:13:04,637 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 254.29 ms. Allocated memory is still 1.0 GB. Free memory was 958.6 MB in the beginning and 947.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 92.92 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 947.9 MB in the beginning and 1.1 GB in the end (delta: -184.2 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 21.74 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 301.40 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.1 MB). Peak memory consumption was 20.1 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 2334.58 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 894.9 MB in the end (delta: 210.6 MB). Peak memory consumption was 210.6 MB. Max. memory is 11.5 GB. * Witness Printer took 6.52 ms. Allocated memory is still 1.2 GB. Free memory is still 894.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (1 trivial, 2 deterministic, 0 nondeterministic). One deterministic module has affine ranking function n + -1 * i and consists of 4 locations. One deterministic module has affine ranking function k and consists of 4 locations. 1 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.2s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 1.7s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 8 states and ocurred in iteration 1. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 16 SDtfs, 19 SDslu, 9 SDs, 0 SdLazy, 11 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital19 mio100 ax100 hnf100 lsp54 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 23ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.3s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...