./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-crafted-lit/ChawdharyCookGulwaniSagivYang-ESOP2008-random1d.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version e19ca921 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-crafted-lit/ChawdharyCookGulwaniSagivYang-ESOP2008-random1d.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-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 64bit --witnessprinter.graph.data.programhash 70ea356a4fda57b451264a060e40bb07db2fe648bea4e3256fcecf71a5a8e7b7 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 19:46:27,326 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 19:46:27,328 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 19:46:27,354 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 19:46:27,354 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 19:46:27,357 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 19:46:27,358 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 19:46:27,363 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 19:46:27,364 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 19:46:27,368 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 19:46:27,368 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 19:46:27,369 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 19:46:27,370 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 19:46:27,371 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 19:46:27,373 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 19:46:27,374 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 19:46:27,374 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 19:46:27,375 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 19:46:27,378 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 19:46:27,382 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 19:46:27,382 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 19:46:27,383 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 19:46:27,384 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 19:46:27,385 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 19:46:27,390 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 19:46:27,390 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 19:46:27,390 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 19:46:27,391 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 19:46:27,392 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 19:46:27,392 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 19:46:27,393 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 19:46:27,393 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 19:46:27,394 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 19:46:27,395 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 19:46:27,396 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 19:46:27,396 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 19:46:27,397 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 19:46:27,397 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 19:46:27,397 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 19:46:27,398 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 19:46:27,398 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 19:46:27,399 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-12-22 19:46:27,426 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 19:46:27,427 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 19:46:27,427 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 19:46:27,427 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 19:46:27,428 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 19:46:27,428 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 19:46:27,428 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 19:46:27,428 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-22 19:46:27,428 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-22 19:46:27,429 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-22 19:46:27,429 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-22 19:46:27,429 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-22 19:46:27,430 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-22 19:46:27,430 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 19:46:27,430 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-22 19:46:27,430 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 19:46:27,430 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 19:46:27,430 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-22 19:46:27,430 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-22 19:46:27,430 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-22 19:46:27,431 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 19:46:27,431 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-22 19:46:27,431 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 19:46:27,431 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-22 19:46:27,431 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 19:46:27,431 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 19:46:27,431 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 19:46:27,432 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 19:46:27,432 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 19:46:27,432 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-22 19:46:27,432 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 70ea356a4fda57b451264a060e40bb07db2fe648bea4e3256fcecf71a5a8e7b7 [2021-12-22 19:46:27,626 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 19:46:27,653 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 19:46:27,655 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 19:46:27,659 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 19:46:27,659 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 19:46:27,660 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/ChawdharyCookGulwaniSagivYang-ESOP2008-random1d.c [2021-12-22 19:46:27,706 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea98b33ac/e951ab8c04c9441abbb79e329240aa45/FLAG13ebac381 [2021-12-22 19:46:28,107 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 19:46:28,107 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/ChawdharyCookGulwaniSagivYang-ESOP2008-random1d.c [2021-12-22 19:46:28,114 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea98b33ac/e951ab8c04c9441abbb79e329240aa45/FLAG13ebac381 [2021-12-22 19:46:28,125 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea98b33ac/e951ab8c04c9441abbb79e329240aa45 [2021-12-22 19:46:28,127 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 19:46:28,129 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 19:46:28,132 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 19:46:28,132 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 19:46:28,134 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 19:46:28,134 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:46:28" (1/1) ... [2021-12-22 19:46:28,135 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20e2c95d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:46:28, skipping insertion in model container [2021-12-22 19:46:28,135 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:46:28" (1/1) ... [2021-12-22 19:46:28,139 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 19:46:28,152 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 19:46:28,250 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 19:46:28,253 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 19:46:28,261 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 19:46:28,269 INFO L208 MainTranslator]: Completed translation [2021-12-22 19:46:28,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:46:28 WrapperNode [2021-12-22 19:46:28,269 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 19:46:28,270 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 19:46:28,270 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 19:46:28,270 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 19:46:28,276 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:46:28" (1/1) ... [2021-12-22 19:46:28,279 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:46:28" (1/1) ... [2021-12-22 19:46:28,289 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 26 [2021-12-22 19:46:28,290 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 19:46:28,290 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 19:46:28,290 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 19:46:28,291 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 19:46:28,296 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:46:28" (1/1) ... [2021-12-22 19:46:28,296 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:46:28" (1/1) ... [2021-12-22 19:46:28,296 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:46:28" (1/1) ... [2021-12-22 19:46:28,297 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:46:28" (1/1) ... [2021-12-22 19:46:28,298 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:46:28" (1/1) ... [2021-12-22 19:46:28,300 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:46:28" (1/1) ... [2021-12-22 19:46:28,300 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:46:28" (1/1) ... [2021-12-22 19:46:28,301 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 19:46:28,301 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 19:46:28,301 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 19:46:28,301 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 19:46:28,302 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:46:28" (1/1) ... [2021-12-22 19:46:28,307 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:46:28,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:46:28,333 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-22 19:46:28,375 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-12-22 19:46:28,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 19:46:28,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 19:46:28,447 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 19:46:28,449 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 19:46:28,521 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 19:46:28,526 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 19:46:28,526 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-22 19:46:28,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:46:28 BoogieIcfgContainer [2021-12-22 19:46:28,527 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 19:46:28,528 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-22 19:46:28,528 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-22 19:46:28,530 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-22 19:46:28,531 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-22 19:46:28,531 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 22.12 07:46:28" (1/3) ... [2021-12-22 19:46:28,532 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6796ccff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.12 07:46:28, skipping insertion in model container [2021-12-22 19:46:28,532 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-22 19:46:28,532 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:46:28" (2/3) ... [2021-12-22 19:46:28,532 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6796ccff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.12 07:46:28, skipping insertion in model container [2021-12-22 19:46:28,533 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-22 19:46:28,533 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:46:28" (3/3) ... [2021-12-22 19:46:28,534 INFO L388 chiAutomizerObserver]: Analyzing ICFG ChawdharyCookGulwaniSagivYang-ESOP2008-random1d.c [2021-12-22 19:46:28,583 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-22 19:46:28,583 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-22 19:46:28,584 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-22 19:46:28,584 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-22 19:46:28,584 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-22 19:46:28,584 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-22 19:46:28,584 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-22 19:46:28,584 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-22 19:46:28,593 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 10 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:46:28,609 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-12-22 19:46:28,609 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-22 19:46:28,609 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-22 19:46:28,613 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-12-22 19:46:28,613 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-22 19:46:28,613 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-22 19:46:28,613 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 10 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:46:28,614 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-12-22 19:46:28,615 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-22 19:46:28,615 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-22 19:46:28,615 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-12-22 19:46:28,615 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-22 19:46:28,620 INFO L791 eck$LassoCheckResult]: Stem: 6#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 10#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_~a~0#1, main_~x~0#1, main_~max~0#1;havoc main_~a~0#1;havoc main_~x~0#1;havoc main_~max~0#1;main_~a~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~max~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 4#L18true assume main_~max~0#1 > 0;main_~a~0#1 := 0;main_~x~0#1 := 1; 9#L21-2true [2021-12-22 19:46:28,621 INFO L793 eck$LassoCheckResult]: Loop: 9#L21-2true assume !!(main_~x~0#1 <= main_~max~0#1); 5#L22true assume 0 != main_#t~nondet3#1;havoc main_#t~nondet3#1;main_~a~0#1 := 1 + main_~a~0#1; 11#L22-2true main_~x~0#1 := 1 + main_~x~0#1; 9#L21-2true [2021-12-22 19:46:28,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:46:28,630 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2021-12-22 19:46:28,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:46:28,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655192957] [2021-12-22 19:46:28,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:46:28,641 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:46:28,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:46:28,709 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 19:46:28,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:46:28,731 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 19:46:28,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:46:28,740 INFO L85 PathProgramCache]: Analyzing trace with hash 43793, now seen corresponding path program 1 times [2021-12-22 19:46:28,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:46:28,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378660895] [2021-12-22 19:46:28,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:46:28,742 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:46:28,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:46:28,760 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 19:46:28,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:46:28,767 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 19:46:28,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:46:28,768 INFO L85 PathProgramCache]: Analyzing trace with hash 889513680, now seen corresponding path program 1 times [2021-12-22 19:46:28,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:46:28,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631493716] [2021-12-22 19:46:28,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:46:28,769 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:46:28,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:46:28,774 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 19:46:28,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:46:28,779 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 19:46:28,837 INFO L210 LassoAnalysis]: Preferences: [2021-12-22 19:46:28,837 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-22 19:46:28,837 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-22 19:46:28,838 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-22 19:46:28,838 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-22 19:46:28,838 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:46:28,838 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-22 19:46:28,838 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-22 19:46:28,838 INFO L133 ssoRankerPreferences]: Filename of dumped script: ChawdharyCookGulwaniSagivYang-ESOP2008-random1d.c_Iteration1_Loop [2021-12-22 19:46:28,838 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-22 19:46:28,839 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-22 19:46:28,849 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:46:28,855 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:46:28,858 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:46:28,864 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:46:28,867 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:46:28,919 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-22 19:46:28,920 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-22 19:46:28,921 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:46:28,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:46:28,923 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-22 19:46:28,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-12-22 19:46:28,930 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-22 19:46:28,930 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-22 19:46:28,951 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-22 19:46:28,952 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-22 19:46:28,970 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-12-22 19:46:28,970 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:46:28,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:46:28,971 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-22 19:46:28,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-12-22 19:46:29,015 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-22 19:46:29,016 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-22 19:46:29,038 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-22 19:46:29,038 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-22 19:46:29,054 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-12-22 19:46:29,054 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:46:29,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:46:29,056 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-22 19:46:29,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-12-22 19:46:29,060 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-22 19:46:29,060 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-22 19:46:29,129 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-12-22 19:46:29,129 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:46:29,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:46:29,130 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-22 19:46:29,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-12-22 19:46:29,145 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-22 19:46:29,145 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-22 19:46:29,259 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-22 19:46:29,263 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2021-12-22 19:46:29,263 INFO L210 LassoAnalysis]: Preferences: [2021-12-22 19:46:29,264 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-22 19:46:29,264 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-22 19:46:29,264 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-22 19:46:29,264 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-22 19:46:29,264 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:46:29,264 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-22 19:46:29,264 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-22 19:46:29,264 INFO L133 ssoRankerPreferences]: Filename of dumped script: ChawdharyCookGulwaniSagivYang-ESOP2008-random1d.c_Iteration1_Loop [2021-12-22 19:46:29,264 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-22 19:46:29,264 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-22 19:46:29,266 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:46:29,277 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:46:29,288 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:46:29,297 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:46:29,300 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:46:29,340 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-22 19:46:29,343 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-22 19:46:29,344 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:46:29,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:46:29,356 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-22 19:46:29,358 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-12-22 19:46:29,371 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-22 19:46:29,378 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-22 19:46:29,378 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-22 19:46:29,378 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-22 19:46:29,378 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-22 19:46:29,381 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-22 19:46:29,381 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-22 19:46:29,395 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-22 19:46:29,443 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-12-22 19:46:29,444 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:46:29,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:46:29,445 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-22 19:46:29,446 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-12-22 19:46:29,448 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-22 19:46:29,454 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-22 19:46:29,454 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-22 19:46:29,454 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-22 19:46:29,454 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-22 19:46:29,456 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-22 19:46:29,456 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-22 19:46:29,472 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-22 19:46:29,490 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-12-22 19:46:29,490 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:46:29,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:46:29,492 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-22 19:46:29,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-12-22 19:46:29,502 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-22 19:46:29,508 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-22 19:46:29,509 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-22 19:46:29,509 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-22 19:46:29,509 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-22 19:46:29,509 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-22 19:46:29,510 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-22 19:46:29,510 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-22 19:46:29,526 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-22 19:46:29,535 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-22 19:46:29,535 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-22 19:46:29,536 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:46:29,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:46:29,537 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-22 19:46:29,538 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-12-22 19:46:29,580 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-22 19:46:29,580 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-22 19:46:29,580 INFO L513 LassoAnalysis]: Proved termination. [2021-12-22 19:46:29,580 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~max~0#1, ULTIMATE.start_main_~x~0#1) = 2*ULTIMATE.start_main_~max~0#1 - 2*ULTIMATE.start_main_~x~0#1 + 1 Supporting invariants [] [2021-12-22 19:46:29,598 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-12-22 19:46:29,601 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-22 19:46:29,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:46:29,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:46:29,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-22 19:46:29,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:46:29,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:46:29,644 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-22 19:46:29,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:46:29,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:46:29,685 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 [2021-12-22 19:46:29,686 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 10 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:46:29,710 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 10 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 25 states and 31 transitions. Complement of second has 7 states. [2021-12-22 19:46:29,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-12-22 19:46:29,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:46:29,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 19 transitions. [2021-12-22 19:46:29,716 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 3 letters. Loop has 3 letters. [2021-12-22 19:46:29,716 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-22 19:46:29,717 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 6 letters. Loop has 3 letters. [2021-12-22 19:46:29,717 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-22 19:46:29,717 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 3 letters. Loop has 6 letters. [2021-12-22 19:46:29,717 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-22 19:46:29,718 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 31 transitions. [2021-12-22 19:46:29,719 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-22 19:46:29,721 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 0 states and 0 transitions. [2021-12-22 19:46:29,721 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-12-22 19:46:29,722 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-12-22 19:46:29,722 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-12-22 19:46:29,722 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 19:46:29,722 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-22 19:46:29,722 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-22 19:46:29,722 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-22 19:46:29,722 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-22 19:46:29,723 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-12-22 19:46:29,723 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-22 19:46:29,723 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-12-22 19:46:29,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.12 07:46:29 BoogieIcfgContainer [2021-12-22 19:46:29,727 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-12-22 19:46:29,728 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-22 19:46:29,728 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-22 19:46:29,728 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-22 19:46:29,728 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:46:28" (3/4) ... [2021-12-22 19:46:29,730 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-22 19:46:29,730 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-22 19:46:29,730 INFO L158 Benchmark]: Toolchain (without parser) took 1601.14ms. Allocated memory is still 117.4MB. Free memory was 87.1MB in the beginning and 82.7MB in the end (delta: 4.5MB). Peak memory consumption was 3.9MB. Max. memory is 16.1GB. [2021-12-22 19:46:29,731 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 83.9MB. Free memory was 41.1MB in the beginning and 41.1MB in the end (delta: 47.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 19:46:29,731 INFO L158 Benchmark]: CACSL2BoogieTranslator took 137.76ms. Allocated memory is still 117.4MB. Free memory was 87.1MB in the beginning and 95.1MB in the end (delta: -8.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-22 19:46:29,732 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.92ms. Allocated memory is still 117.4MB. Free memory was 94.7MB in the beginning and 93.5MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 19:46:29,732 INFO L158 Benchmark]: Boogie Preprocessor took 10.37ms. Allocated memory is still 117.4MB. Free memory was 93.5MB in the beginning and 92.6MB in the end (delta: 896.7kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-22 19:46:29,732 INFO L158 Benchmark]: RCFGBuilder took 226.11ms. Allocated memory is still 117.4MB. Free memory was 92.6MB in the beginning and 83.8MB in the end (delta: 8.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-22 19:46:29,733 INFO L158 Benchmark]: BuchiAutomizer took 1199.05ms. Allocated memory is still 117.4MB. Free memory was 83.8MB in the beginning and 83.2MB in the end (delta: 556.6kB). Peak memory consumption was 4.9MB. Max. memory is 16.1GB. [2021-12-22 19:46:29,733 INFO L158 Benchmark]: Witness Printer took 2.49ms. Allocated memory is still 117.4MB. Free memory was 83.2MB in the beginning and 82.7MB in the end (delta: 558.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 19:46:29,735 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 83.9MB. Free memory was 41.1MB in the beginning and 41.1MB in the end (delta: 47.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 137.76ms. Allocated memory is still 117.4MB. Free memory was 87.1MB in the beginning and 95.1MB in the end (delta: -8.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 19.92ms. Allocated memory is still 117.4MB. Free memory was 94.7MB in the beginning and 93.5MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 10.37ms. Allocated memory is still 117.4MB. Free memory was 93.5MB in the beginning and 92.6MB in the end (delta: 896.7kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 226.11ms. Allocated memory is still 117.4MB. Free memory was 92.6MB in the beginning and 83.8MB in the end (delta: 8.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * BuchiAutomizer took 1199.05ms. Allocated memory is still 117.4MB. Free memory was 83.8MB in the beginning and 83.2MB in the end (delta: 556.6kB). Peak memory consumption was 4.9MB. Max. memory is 16.1GB. * Witness Printer took 2.49ms. Allocated memory is still 117.4MB. Free memory was 83.2MB in the beginning and 82.7MB in the end (delta: 558.7kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 1 terminating modules (0 trivial, 1 deterministic, 0 nondeterministic). One deterministic module has affine ranking function 2 * max + -2 * x + 1 and consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.1s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 0.9s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 0 states and ocurred in iteration 1. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 13 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12 mSDsluCounter, 20 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6 IncrementalHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 12 mSDtfsCounter, 6 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital19 mio100 ax163 hnf100 lsp32 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 51ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.3s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-12-22 19:46:29,756 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-12-22 19:46:29,972 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE