./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/loop-invgen/nest-if3.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/nest-if3.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 a6ea3567a534d80cc2c4496700797b4364bacf8f .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 19:13:07,216 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 19:13:07,218 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 19:13:07,243 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 19:13:07,243 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 19:13:07,244 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 19:13:07,246 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 19:13:07,248 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 19:13:07,250 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 19:13:07,251 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 19:13:07,252 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 19:13:07,253 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 19:13:07,254 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 19:13:07,255 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 19:13:07,256 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 19:13:07,257 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 19:13:07,258 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 19:13:07,260 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 19:13:07,261 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 19:13:07,263 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 19:13:07,265 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 19:13:07,266 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 19:13:07,268 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 19:13:07,269 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 19:13:07,272 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 19:13:07,272 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 19:13:07,273 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 19:13:07,274 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 19:13:07,276 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 19:13:07,277 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 19:13:07,277 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 19:13:07,278 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 19:13:07,278 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 19:13:07,280 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 19:13:07,282 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 19:13:07,285 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 19:13:07,289 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 19:13:07,289 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 19:13:07,290 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 19:13:07,291 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 19:13:07,294 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 19:13:07,295 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-10-19 19:13:07,345 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 19:13:07,346 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 19:13:07,348 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 19:13:07,349 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 19:13:07,349 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 19:13:07,349 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-19 19:13:07,350 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-19 19:13:07,350 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-19 19:13:07,350 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-19 19:13:07,350 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-19 19:13:07,351 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-19 19:13:07,352 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 19:13:07,352 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 19:13:07,353 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 19:13:07,353 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 19:13:07,353 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 19:13:07,354 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 19:13:07,354 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-19 19:13:07,354 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-19 19:13:07,355 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-19 19:13:07,355 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 19:13:07,355 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-19 19:13:07,355 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-19 19:13:07,356 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 19:13:07,356 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-19 19:13:07,356 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 19:13:07,357 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 19:13:07,357 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-19 19:13:07,357 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 19:13:07,358 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 19:13:07,358 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 19:13:07,358 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-19 19:13:07,360 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-19 19:13:07,361 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 -> a6ea3567a534d80cc2c4496700797b4364bacf8f [2020-10-19 19:13:07,706 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 19:13:07,725 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 19:13:07,729 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 19:13:07,731 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 19:13:07,734 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 19:13:07,735 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-invgen/nest-if3.i [2020-10-19 19:13:07,798 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c871d7b54/ee8a436ad8b34bd2b14366ac0c84e677/FLAG024ae83a6 [2020-10-19 19:13:08,269 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 19:13:08,270 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/nest-if3.i [2020-10-19 19:13:08,278 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c871d7b54/ee8a436ad8b34bd2b14366ac0c84e677/FLAG024ae83a6 [2020-10-19 19:13:08,634 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c871d7b54/ee8a436ad8b34bd2b14366ac0c84e677 [2020-10-19 19:13:08,638 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 19:13:08,645 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-19 19:13:08,646 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 19:13:08,647 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 19:13:08,650 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 19:13:08,651 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 07:13:08" (1/1) ... [2020-10-19 19:13:08,654 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f290273 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:13:08, skipping insertion in model container [2020-10-19 19:13:08,654 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 07:13:08" (1/1) ... [2020-10-19 19:13:08,662 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 19:13:08,692 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 19:13:08,890 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 19:13:08,902 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 19:13:08,921 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 19:13:08,937 INFO L208 MainTranslator]: Completed translation [2020-10-19 19:13:08,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:13:08 WrapperNode [2020-10-19 19:13:08,938 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 19:13:08,939 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-19 19:13:08,939 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-19 19:13:08,939 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-19 19:13:09,008 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:13:08" (1/1) ... [2020-10-19 19:13:09,016 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:13:08" (1/1) ... [2020-10-19 19:13:09,035 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-19 19:13:09,036 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 19:13:09,036 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 19:13:09,036 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 19:13:09,043 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:13:08" (1/1) ... [2020-10-19 19:13:09,044 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:13:08" (1/1) ... [2020-10-19 19:13:09,045 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:13:08" (1/1) ... [2020-10-19 19:13:09,045 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:13:08" (1/1) ... [2020-10-19 19:13:09,049 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:13:08" (1/1) ... [2020-10-19 19:13:09,054 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:13:08" (1/1) ... [2020-10-19 19:13:09,055 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:13:08" (1/1) ... [2020-10-19 19:13:09,057 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 19:13:09,058 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 19:13:09,058 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 19:13:09,058 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 19:13:09,059 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:13:08" (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 19:13:09,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-19 19:13:09,135 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 19:13:09,136 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 19:13:09,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 19:13:09,367 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 19:13:09,368 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-19 19:13:09,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 07:13:09 BoogieIcfgContainer [2020-10-19 19:13:09,370 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 19:13:09,371 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-19 19:13:09,371 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-19 19:13:09,375 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-19 19:13:09,376 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-19 19:13:09,376 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 19.10 07:13:08" (1/3) ... [2020-10-19 19:13:09,377 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5b9c3d6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.10 07:13:09, skipping insertion in model container [2020-10-19 19:13:09,377 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-19 19:13:09,378 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:13:08" (2/3) ... [2020-10-19 19:13:09,378 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5b9c3d6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.10 07:13:09, skipping insertion in model container [2020-10-19 19:13:09,378 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-19 19:13:09,378 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 07:13:09" (3/3) ... [2020-10-19 19:13:09,380 INFO L373 chiAutomizerObserver]: Analyzing ICFG nest-if3.i [2020-10-19 19:13:09,445 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-19 19:13:09,446 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-19 19:13:09,446 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-19 19:13:09,446 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 19:13:09,446 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 19:13:09,446 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-19 19:13:09,446 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 19:13:09,446 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-19 19:13:09,463 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states. [2020-10-19 19:13:09,490 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2020-10-19 19:13:09,490 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 19:13:09,491 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 19:13:09,499 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2020-10-19 19:13:09,499 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-10-19 19:13:09,499 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-10-19 19:13:09,500 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states. [2020-10-19 19:13:09,502 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2020-10-19 19:13:09,502 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 19:13:09,502 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 19:13:09,502 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2020-10-19 19:13:09,502 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-10-19 19:13:09,511 INFO L794 eck$LassoCheckResult]: Stem: 15#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9); 13#L-1true havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~post6, main_#t~nondet7, main_#t~post5, main_~i~0, main_~k~0, main_~n~0, main_~l~0;havoc main_~i~0;havoc main_~k~0;havoc main_~n~0;havoc main_~l~0;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~l~0 := main_#t~nondet4;havoc main_#t~nondet4; 4#L28true assume !!(main_~l~0 > 0); 7#L29true assume !!(main_~l~0 < 1000000); 11#L30true assume !!(main_~n~0 < 1000000);main_~k~0 := 1; 5#L31-3true [2020-10-19 19:13:09,512 INFO L796 eck$LassoCheckResult]: Loop: 5#L31-3true assume !!(main_~k~0 < main_~n~0);main_~i~0 := main_~l~0; 12#L32-2true assume !true; 8#L32-3true assume 0 != main_#t~nondet7;havoc main_#t~nondet7;main_~l~0 := 1 + main_~l~0; 9#L31-2true main_#t~post5 := main_~k~0;main_~k~0 := 1 + main_#t~post5;havoc main_#t~post5; 5#L31-3true [2020-10-19 19:13:09,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 19:13:09,518 INFO L82 PathProgramCache]: Analyzing trace with hash 28695849, now seen corresponding path program 1 times [2020-10-19 19:13:09,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 19:13:09,530 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32901102] [2020-10-19 19:13:09,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 19:13:09,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 19:13:09,625 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 19:13:09,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 19:13:09,640 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 19:13:09,660 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 19:13:09,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 19:13:09,662 INFO L82 PathProgramCache]: Analyzing trace with hash 1721057, now seen corresponding path program 1 times [2020-10-19 19:13:09,662 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 19:13:09,662 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216021840] [2020-10-19 19:13:09,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 19:13:09,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 19:13:09,694 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 19:13:09,695 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216021840] [2020-10-19 19:13:09,696 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 19:13:09,696 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-19 19:13:09,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773162925] [2020-10-19 19:13:09,702 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-10-19 19:13:09,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 19:13:09,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-19 19:13:09,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-19 19:13:09,720 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 2 states. [2020-10-19 19:13:09,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 19:13:09,726 INFO L93 Difference]: Finished difference Result 16 states and 21 transitions. [2020-10-19 19:13:09,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-19 19:13:09,728 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 21 transitions. [2020-10-19 19:13:09,730 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2020-10-19 19:13:09,733 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 11 states and 13 transitions. [2020-10-19 19:13:09,734 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2020-10-19 19:13:09,734 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2020-10-19 19:13:09,735 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 13 transitions. [2020-10-19 19:13:09,735 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-19 19:13:09,736 INFO L691 BuchiCegarLoop]: Abstraction has 11 states and 13 transitions. [2020-10-19 19:13:09,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 13 transitions. [2020-10-19 19:13:09,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-10-19 19:13:09,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-10-19 19:13:09,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2020-10-19 19:13:09,759 INFO L714 BuchiCegarLoop]: Abstraction has 11 states and 13 transitions. [2020-10-19 19:13:09,759 INFO L594 BuchiCegarLoop]: Abstraction has 11 states and 13 transitions. [2020-10-19 19:13:09,759 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-10-19 19:13:09,760 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 13 transitions. [2020-10-19 19:13:09,760 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2020-10-19 19:13:09,760 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 19:13:09,761 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 19:13:09,761 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2020-10-19 19:13:09,761 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-10-19 19:13:09,762 INFO L794 eck$LassoCheckResult]: Stem: 45#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); 41#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~post6, main_#t~nondet7, main_#t~post5, main_~i~0, main_~k~0, main_~n~0, main_~l~0;havoc main_~i~0;havoc main_~k~0;havoc main_~n~0;havoc main_~l~0;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~l~0 := main_#t~nondet4;havoc main_#t~nondet4; 42#L28 assume !!(main_~l~0 > 0); 47#L29 assume !!(main_~l~0 < 1000000); 51#L30 assume !!(main_~n~0 < 1000000);main_~k~0 := 1; 46#L31-3 [2020-10-19 19:13:09,762 INFO L796 eck$LassoCheckResult]: Loop: 46#L31-3 assume !!(main_~k~0 < main_~n~0);main_~i~0 := main_~l~0; 44#L32-2 assume !(main_~i~0 < main_~n~0); 49#L32-3 assume 0 != main_#t~nondet7;havoc main_#t~nondet7;main_~l~0 := 1 + main_~l~0; 50#L31-2 main_#t~post5 := main_~k~0;main_~k~0 := 1 + main_#t~post5;havoc main_#t~post5; 46#L31-3 [2020-10-19 19:13:09,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 19:13:09,762 INFO L82 PathProgramCache]: Analyzing trace with hash 28695849, now seen corresponding path program 2 times [2020-10-19 19:13:09,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 19:13:09,763 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553643052] [2020-10-19 19:13:09,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 19:13:09,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 19:13:09,777 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 19:13:09,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 19:13:09,790 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 19:13:09,795 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 19:13:09,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 19:13:09,796 INFO L82 PathProgramCache]: Analyzing trace with hash 1699915, now seen corresponding path program 1 times [2020-10-19 19:13:09,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 19:13:09,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24424038] [2020-10-19 19:13:09,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 19:13:09,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 19:13:09,803 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 19:13:09,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 19:13:09,809 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 19:13:09,811 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 19:13:09,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 19:13:09,812 INFO L82 PathProgramCache]: Analyzing trace with hash 1271724403, now seen corresponding path program 1 times [2020-10-19 19:13:09,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 19:13:09,813 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616575012] [2020-10-19 19:13:09,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 19:13:09,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 19:13:09,837 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 19:13:09,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 19:13:09,865 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 19:13:09,871 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 19:13:09,932 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 19:13:09,933 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 19:13:09,933 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 19:13:09,933 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 19:13:09,934 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-19 19:13:09,934 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 19:13:09,934 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 19:13:09,934 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 19:13:09,934 INFO L133 ssoRankerPreferences]: Filename of dumped script: nest-if3.i_Iteration2_Loop [2020-10-19 19:13:09,935 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 19:13:09,935 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 19:13:09,958 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 19:13:09,971 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 19:13:09,977 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 19:13:10,078 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 19:13:10,079 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 19:13:10,086 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 19:13:10,086 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 19:13:10,096 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 19:13:10,096 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 19:13:10,134 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 19:13:10,135 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-19 19:13:10,139 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 19:13:10,139 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet7=-5} Honda state: {ULTIMATE.start_main_#t~nondet7=-5} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 19:13:10,171 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 19:13:10,171 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 19:13:10,210 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-19 19:13:10,210 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-19 19:13:10,496 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-19 19:13:10,498 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 19:13:10,499 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 19:13:10,499 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 19:13:10,499 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 19:13:10,499 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-19 19:13:10,499 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 19:13:10,499 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 19:13:10,499 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 19:13:10,499 INFO L133 ssoRankerPreferences]: Filename of dumped script: nest-if3.i_Iteration2_Loop [2020-10-19 19:13:10,500 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 19:13:10,500 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 19:13:10,502 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 19:13:10,509 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 19:13:10,531 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 19:13:10,600 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 19:13:10,606 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 19:13:10,617 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 19:13:10,620 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 19:13:10,620 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 19:13:10,621 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 19:13:10,622 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 19:13:10,622 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 19:13:10,625 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 19:13:10,625 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 19:13:10,628 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 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 19:13:10,665 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 19:13:10,667 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 19:13:10,668 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 19:13:10,668 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 19:13:10,668 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 19:13:10,669 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 19:13:10,672 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 19:13:10,673 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 19:13:10,678 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-19 19:13:10,684 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-19 19:13:10,685 INFO L444 ModelExtractionUtils]: 2 out of 6 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 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 19:13:10,699 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-19 19:13:10,699 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-19 19:13:10,699 INFO L510 LassoAnalysis]: Proved termination. [2020-10-19 19:13:10,700 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~n~0, ULTIMATE.start_main_~k~0) = 1*ULTIMATE.start_main_~n~0 - 1*ULTIMATE.start_main_~k~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 19:13:10,737 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-19 19:13:10,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 19:13:10,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 19:13:10,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 19:13:10,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 19:13:10,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 19:13:10,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-19 19:13:10,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 19:13:10,823 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 19:13:10,827 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-10-19 19:13:10,828 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 13 transitions. cyclomatic complexity: 3 Second operand 3 states. [2020-10-19 19:13:10,876 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 13 transitions. cyclomatic complexity: 3. Second operand 3 states. Result 18 states and 24 transitions. Complement of second has 4 states. [2020-10-19 19:13:10,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-19 19:13:10,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-19 19:13:10,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 13 transitions. [2020-10-19 19:13:10,879 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 13 transitions. Stem has 5 letters. Loop has 4 letters. [2020-10-19 19:13:10,881 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 19:13:10,881 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 13 transitions. Stem has 9 letters. Loop has 4 letters. [2020-10-19 19:13:10,881 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 19:13:10,881 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 13 transitions. Stem has 5 letters. Loop has 8 letters. [2020-10-19 19:13:10,882 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 19:13:10,882 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 18 states and 24 transitions. [2020-10-19 19:13:10,883 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-19 19:13:10,884 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 18 states to 16 states and 20 transitions. [2020-10-19 19:13:10,884 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2020-10-19 19:13:10,885 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2020-10-19 19:13:10,885 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 20 transitions. [2020-10-19 19:13:10,885 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-19 19:13:10,885 INFO L691 BuchiCegarLoop]: Abstraction has 16 states and 20 transitions. [2020-10-19 19:13:10,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states and 20 transitions. [2020-10-19 19:13:10,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2020-10-19 19:13:10,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-10-19 19:13:10,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 19 transitions. [2020-10-19 19:13:10,888 INFO L714 BuchiCegarLoop]: Abstraction has 15 states and 19 transitions. [2020-10-19 19:13:10,888 INFO L594 BuchiCegarLoop]: Abstraction has 15 states and 19 transitions. [2020-10-19 19:13:10,888 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-10-19 19:13:10,888 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 19 transitions. [2020-10-19 19:13:10,889 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-19 19:13:10,889 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 19:13:10,889 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 19:13:10,890 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-10-19 19:13:10,890 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-19 19:13:10,890 INFO L794 eck$LassoCheckResult]: Stem: 123#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); 117#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~post6, main_#t~nondet7, main_#t~post5, main_~i~0, main_~k~0, main_~n~0, main_~l~0;havoc main_~i~0;havoc main_~k~0;havoc main_~n~0;havoc main_~l~0;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~l~0 := main_#t~nondet4;havoc main_#t~nondet4; 118#L28 assume !!(main_~l~0 > 0); 126#L29 assume !!(main_~l~0 < 1000000); 131#L30 assume !!(main_~n~0 < 1000000);main_~k~0 := 1; 124#L31-3 assume !!(main_~k~0 < main_~n~0);main_~i~0 := main_~l~0; 120#L32-2 [2020-10-19 19:13:10,891 INFO L796 eck$LassoCheckResult]: Loop: 120#L32-2 assume !!(main_~i~0 < main_~n~0);__VERIFIER_assert_#in~cond := (if 1 <= main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 127#L18 assume !(0 == __VERIFIER_assert_~cond); 119#L18-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 120#L32-2 [2020-10-19 19:13:10,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 19:13:10,891 INFO L82 PathProgramCache]: Analyzing trace with hash 889571344, now seen corresponding path program 1 times [2020-10-19 19:13:10,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 19:13:10,892 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932351453] [2020-10-19 19:13:10,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 19:13:10,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 19:13:10,905 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 19:13:10,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 19:13:10,915 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 19:13:10,919 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 19:13:10,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 19:13:10,920 INFO L82 PathProgramCache]: Analyzing trace with hash 63012, now seen corresponding path program 1 times [2020-10-19 19:13:10,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 19:13:10,920 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814746357] [2020-10-19 19:13:10,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 19:13:10,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 19:13:10,929 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 19:13:10,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 19:13:10,934 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 19:13:10,936 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 19:13:10,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 19:13:10,937 INFO L82 PathProgramCache]: Analyzing trace with hash 1271726005, now seen corresponding path program 1 times [2020-10-19 19:13:10,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 19:13:10,938 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335869026] [2020-10-19 19:13:10,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 19:13:10,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 19:13:10,973 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 19:13:11,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 19:13:11,002 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 19:13:11,013 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 19:13:11,073 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 19:13:11,073 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 19:13:11,073 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 19:13:11,073 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 19:13:11,073 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-19 19:13:11,073 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 19:13:11,074 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 19:13:11,074 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 19:13:11,074 INFO L133 ssoRankerPreferences]: Filename of dumped script: nest-if3.i_Iteration3_Loop [2020-10-19 19:13:11,074 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 19:13:11,074 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 19:13:11,076 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 19:13:11,081 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 19:13:11,090 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 19:13:11,144 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 19:13:11,145 INFO L404 LassoAnalysis]: Checking for nontermination... 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) [2020-10-19 19:13:11,152 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 19:13:11,152 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 19:13:11,158 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 19:13:11,158 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 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 19:13:11,220 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 19:13:11,220 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 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 19:13:11,265 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-19 19:13:11,266 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-19 19:13:11,311 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-19 19:13:11,313 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 19:13:11,313 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 19:13:11,313 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 19:13:11,314 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 19:13:11,314 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-19 19:13:11,315 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 19:13:11,315 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 19:13:11,315 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 19:13:11,315 INFO L133 ssoRankerPreferences]: Filename of dumped script: nest-if3.i_Iteration3_Loop [2020-10-19 19:13:11,315 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 19:13:11,316 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 19:13:11,317 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 19:13:11,322 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 19:13:11,333 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 19:13:11,381 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 19:13:11,381 INFO L489 LassoAnalysis]: Using template 'affine'. 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) [2020-10-19 19:13:11,401 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 19:13:11,403 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 19:13:11,403 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 19:13:11,403 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 19:13:11,404 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 19:13:11,404 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 19:13:11,405 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 19:13:11,405 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 19:13:11,409 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 19:13:11,459 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 19:13:11,461 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 19:13:11,461 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 19:13:11,462 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 19:13:11,462 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 19:13:11,462 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 19:13:11,463 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 19:13:11,464 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 19:13:11,467 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-19 19:13:11,473 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2020-10-19 19:13:11,473 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 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 19:13:11,483 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-19 19:13:11,483 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-19 19:13:11,483 INFO L510 LassoAnalysis]: Proved termination. [2020-10-19 19:13:11,483 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 19:13:11,504 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-19 19:13:11,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 19:13:11,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 19:13:11,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 19:13:11,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 19:13:11,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 19:13:11,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-19 19:13:11,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 19:13:11,561 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 19:13:11,561 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-10-19 19:13:11,562 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 19 transitions. cyclomatic complexity: 6 Second operand 3 states. [2020-10-19 19:13:11,582 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 19 transitions. cyclomatic complexity: 6. Second operand 3 states. Result 32 states and 41 transitions. Complement of second has 7 states. [2020-10-19 19:13:11,582 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 19:13:11,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-19 19:13:11,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2020-10-19 19:13:11,584 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 6 letters. Loop has 3 letters. [2020-10-19 19:13:11,584 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 19:13:11,584 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 9 letters. Loop has 3 letters. [2020-10-19 19:13:11,584 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 19:13:11,585 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 6 letters. Loop has 6 letters. [2020-10-19 19:13:11,585 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 19:13:11,585 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 41 transitions. [2020-10-19 19:13:11,588 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-19 19:13:11,589 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 21 states and 27 transitions. [2020-10-19 19:13:11,589 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2020-10-19 19:13:11,590 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2020-10-19 19:13:11,590 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 27 transitions. [2020-10-19 19:13:11,590 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-19 19:13:11,590 INFO L691 BuchiCegarLoop]: Abstraction has 21 states and 27 transitions. [2020-10-19 19:13:11,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 27 transitions. [2020-10-19 19:13:11,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 15. [2020-10-19 19:13:11,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-10-19 19:13:11,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2020-10-19 19:13:11,593 INFO L714 BuchiCegarLoop]: Abstraction has 15 states and 18 transitions. [2020-10-19 19:13:11,593 INFO L594 BuchiCegarLoop]: Abstraction has 15 states and 18 transitions. [2020-10-19 19:13:11,593 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-10-19 19:13:11,593 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 18 transitions. [2020-10-19 19:13:11,594 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-19 19:13:11,594 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 19:13:11,594 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 19:13:11,595 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 19:13:11,595 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-19 19:13:11,595 INFO L794 eck$LassoCheckResult]: Stem: 221#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); 215#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~post6, main_#t~nondet7, main_#t~post5, main_~i~0, main_~k~0, main_~n~0, main_~l~0;havoc main_~i~0;havoc main_~k~0;havoc main_~n~0;havoc main_~l~0;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~l~0 := main_#t~nondet4;havoc main_#t~nondet4; 216#L28 assume !!(main_~l~0 > 0); 224#L29 assume !!(main_~l~0 < 1000000); 229#L30 assume !!(main_~n~0 < 1000000);main_~k~0 := 1; 222#L31-3 assume !!(main_~k~0 < main_~n~0);main_~i~0 := main_~l~0; 220#L32-2 assume !(main_~i~0 < main_~n~0); 227#L32-3 assume !(0 != main_#t~nondet7);havoc main_#t~nondet7; 228#L31-2 main_#t~post5 := main_~k~0;main_~k~0 := 1 + main_#t~post5;havoc main_#t~post5; 223#L31-3 assume !!(main_~k~0 < main_~n~0);main_~i~0 := main_~l~0; 218#L32-2 [2020-10-19 19:13:11,596 INFO L796 eck$LassoCheckResult]: Loop: 218#L32-2 assume !!(main_~i~0 < main_~n~0);__VERIFIER_assert_#in~cond := (if 1 <= main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 225#L18 assume !(0 == __VERIFIER_assert_~cond); 217#L18-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 218#L32-2 [2020-10-19 19:13:11,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 19:13:11,596 INFO L82 PathProgramCache]: Analyzing trace with hash 768752776, now seen corresponding path program 1 times [2020-10-19 19:13:11,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 19:13:11,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446613888] [2020-10-19 19:13:11,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 19:13:11,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 19:13:11,609 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 19:13:11,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 19:13:11,620 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 19:13:11,624 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 19:13:11,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 19:13:11,625 INFO L82 PathProgramCache]: Analyzing trace with hash 63012, now seen corresponding path program 2 times [2020-10-19 19:13:11,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 19:13:11,626 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837655798] [2020-10-19 19:13:11,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 19:13:11,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 19:13:11,631 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 19:13:11,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 19:13:11,634 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 19:13:11,636 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 19:13:11,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 19:13:11,637 INFO L82 PathProgramCache]: Analyzing trace with hash 1148360765, now seen corresponding path program 1 times [2020-10-19 19:13:11,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 19:13:11,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199497510] [2020-10-19 19:13:11,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 19:13:11,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 19:13:11,693 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 19:13:11,693 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199497510] [2020-10-19 19:13:11,694 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [623715197] [2020-10-19 19:13:11,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 19:13:11,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 19:13:11,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-19 19:13:11,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 19:13:11,780 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 19:13:11,780 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 19:13:11,781 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-10-19 19:13:11,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106540828] [2020-10-19 19:13:11,831 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 19:13:11,832 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 19:13:11,832 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 19:13:11,832 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 19:13:11,832 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-19 19:13:11,832 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 19:13:11,832 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 19:13:11,833 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 19:13:11,833 INFO L133 ssoRankerPreferences]: Filename of dumped script: nest-if3.i_Iteration4_Loop [2020-10-19 19:13:11,833 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 19:13:11,833 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 19:13:11,834 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 19:13:11,837 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 19:13:11,844 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 19:13:11,897 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 19:13:11,898 INFO L404 LassoAnalysis]: Checking for nontermination... 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 19:13:11,913 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 19:13:11,913 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 19:13:11,917 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 19:13:11,917 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 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 19:13:11,966 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 19:13:11,966 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 19:13:11,971 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 19:13:11,971 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 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 19:13:12,023 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 19:13:12,024 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 18 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 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 19:13:12,081 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-19 19:13:12,081 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 19:13:12,148 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-19 19:13:12,150 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 19:13:12,150 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 19:13:12,150 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 19:13:12,151 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 19:13:12,151 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-19 19:13:12,151 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 19:13:12,151 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 19:13:12,151 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 19:13:12,151 INFO L133 ssoRankerPreferences]: Filename of dumped script: nest-if3.i_Iteration4_Loop [2020-10-19 19:13:12,152 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 19:13:12,152 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 19:13:12,153 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 19:13:12,160 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 19:13:12,163 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 19:13:12,208 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 19:13:12,208 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 19:13:12,220 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 19:13:12,222 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 19:13:12,222 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 19:13:12,222 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 19:13:12,222 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 19:13:12,222 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 19:13:12,224 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 19:13:12,224 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 19:13:12,227 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 19:13:12,284 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 19:13:12,286 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 19:13:12,287 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 19:13:12,287 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 19:13:12,287 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 19:13:12,287 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 19:13:12,288 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 19:13:12,288 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 19:13:12,291 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 19:13:12,342 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 19:13:12,344 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 19:13:12,344 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 19:13:12,345 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 19:13:12,345 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 19:13:12,345 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 19:13:12,347 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 19:13:12,347 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 19:13:12,354 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-19 19:13:12,366 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2020-10-19 19:13:12,366 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 23 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 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 19:13:12,378 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-19 19:13:12,378 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-19 19:13:12,378 INFO L510 LassoAnalysis]: Proved termination. [2020-10-19 19:13:12,379 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~n~0) = -1*ULTIMATE.start_main_~i~0 + 1*ULTIMATE.start_main_~n~0 Supporting invariants [] [2020-10-19 19:13:12,408 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-19 19:13:12,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 19:13:12,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 19:13:12,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 19:13:12,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 19:13:12,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 19:13:12,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-19 19:13:12,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 19:13:12,464 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 19:13:12,464 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-10-19 19:13:12,465 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 18 transitions. cyclomatic complexity: 5 Second operand 3 states. [2020-10-19 19:13:12,483 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 18 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 26 states and 33 transitions. Complement of second has 7 states. [2020-10-19 19:13:12,484 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 19:13:12,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-19 19:13:12,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2020-10-19 19:13:12,485 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 10 letters. Loop has 3 letters. [2020-10-19 19:13:12,486 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 19:13:12,486 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-19 19:13:12,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 19:13:12,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 19:13:12,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 19:13:12,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 19:13:12,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 19:13:12,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-19 19:13:12,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 19:13:12,533 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 19:13:12,533 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2020-10-19 19:13:12,534 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 18 transitions. cyclomatic complexity: 5 Second operand 3 states. [2020-10-19 19:13:12,555 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 18 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 26 states and 33 transitions. Complement of second has 7 states. [2020-10-19 19:13:12,556 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 19:13:12,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-19 19:13:12,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2020-10-19 19:13:12,557 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 10 letters. Loop has 3 letters. [2020-10-19 19:13:12,557 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 19:13:12,557 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-19 19:13:12,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 19:13:12,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 19:13:12,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 19:13:12,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 19:13:12,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 19:13:12,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-19 19:13:12,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 19:13:12,612 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 19:13:12,612 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-10-19 19:13:12,612 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 18 transitions. cyclomatic complexity: 5 Second operand 3 states. [2020-10-19 19:13:12,765 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 18 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 23 states and 28 transitions. Complement of second has 6 states. [2020-10-19 19:13:12,766 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 19:13:12,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-19 19:13:12,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 21 transitions. [2020-10-19 19:13:12,767 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 10 letters. Loop has 3 letters. [2020-10-19 19:13:12,767 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 19:13:12,768 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 13 letters. Loop has 3 letters. [2020-10-19 19:13:12,768 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 19:13:12,768 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 10 letters. Loop has 6 letters. [2020-10-19 19:13:12,769 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 19:13:12,769 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 28 transitions. [2020-10-19 19:13:12,770 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-19 19:13:12,771 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 0 states and 0 transitions. [2020-10-19 19:13:12,771 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-10-19 19:13:12,771 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-10-19 19:13:12,771 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-10-19 19:13:12,771 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-19 19:13:12,771 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 19:13:12,772 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 19:13:12,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 19:13:12,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 19:13:12,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-19 19:13:12,773 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 6 states. [2020-10-19 19:13:12,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 19:13:12,773 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-10-19 19:13:12,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-19 19:13:12,774 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2020-10-19 19:13:12,774 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-19 19:13:12,774 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2020-10-19 19:13:12,774 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-10-19 19:13:12,775 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-10-19 19:13:12,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-10-19 19:13:12,775 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-19 19:13:12,775 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 19:13:12,775 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 19:13:12,775 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 19:13:12,775 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-10-19 19:13:12,776 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-10-19 19:13:12,776 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-19 19:13:12,776 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-10-19 19:13:12,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 19.10 07:13:12 BoogieIcfgContainer [2020-10-19 19:13:12,787 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-10-19 19:13:12,787 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 19:13:12,789 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 19:13:12,789 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 19:13:12,790 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 07:13:09" (3/4) ... [2020-10-19 19:13:12,799 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-19 19:13:12,799 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 19:13:12,803 INFO L168 Benchmark]: Toolchain (without parser) took 4161.45 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 194.5 MB). Free memory was 954.6 MB in the beginning and 1.2 GB in the end (delta: -216.9 MB). There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 19:13:12,804 INFO L168 Benchmark]: CDTParser took 0.33 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 19:13:12,805 INFO L168 Benchmark]: CACSL2BoogieTranslator took 292.39 ms. Allocated memory is still 1.0 GB. Free memory was 954.6 MB in the beginning and 943.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2020-10-19 19:13:12,806 INFO L168 Benchmark]: Boogie Procedure Inliner took 96.67 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 100.7 MB). Free memory was 943.9 MB in the beginning and 1.1 GB in the end (delta: -152.6 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. [2020-10-19 19:13:12,806 INFO L168 Benchmark]: Boogie Preprocessor took 21.72 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2020-10-19 19:13:12,807 INFO L168 Benchmark]: RCFGBuilder took 311.57 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.8 MB). Peak memory consumption was 19.8 MB. Max. memory is 11.5 GB. [2020-10-19 19:13:12,809 INFO L168 Benchmark]: BuchiAutomizer took 3416.25 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 93.8 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -101.6 MB). There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 19:13:12,809 INFO L168 Benchmark]: Witness Printer took 12.06 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 19:13:12,814 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 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 292.39 ms. Allocated memory is still 1.0 GB. Free memory was 954.6 MB in the beginning and 943.9 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 96.67 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 100.7 MB). Free memory was 943.9 MB in the beginning and 1.1 GB in the end (delta: -152.6 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 21.72 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 311.57 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.8 MB). Peak memory consumption was 19.8 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 3416.25 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 93.8 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -101.6 MB). There was no memory consumed. Max. memory is 11.5 GB. * Witness Printer took 12.06 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. 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 5 terminating modules (2 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function n + -1 * k and consists of 3 locations. One deterministic module has affine ranking function n + -1 * i and consists of 4 locations. One nondeterministic module has affine ranking function -1 * i + n and consists of 4 locations. 2 modules have a trivial ranking function, the largest among these consists of 6 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.3s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 2.6s. Construction of modules took 0.1s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 7 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 15 states and ocurred in iteration 2. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 77 SDtfs, 60 SDslu, 28 SDs, 0 SdLazy, 43 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT2 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital21 mio100 ax100 hnf98 lsp73 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq156 hnf93 smp100 dnf100 smp100 tf109 neg100 sie108 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 20ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.6s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...