./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-nla/dijkstra4-both-nt.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version f4b24e32 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-nla/dijkstra4-both-nt.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6d80bfac8239edb36458a39079f29084e725943de73140087509ea8c53e688bf --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-14 14:54:04,413 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-14 14:54:04,414 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-14 14:54:04,445 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-14 14:54:04,449 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-14 14:54:04,450 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-14 14:54:04,451 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-14 14:54:04,454 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-14 14:54:04,458 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-14 14:54:04,459 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-14 14:54:04,460 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-14 14:54:04,461 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-14 14:54:04,462 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-14 14:54:04,464 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-14 14:54:04,465 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-14 14:54:04,467 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-14 14:54:04,468 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-14 14:54:04,472 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-14 14:54:04,473 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-14 14:54:04,475 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-14 14:54:04,475 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-14 14:54:04,476 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-14 14:54:04,480 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-14 14:54:04,481 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-14 14:54:04,481 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-14 14:54:04,483 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-14 14:54:04,483 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-14 14:54:04,484 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-14 14:54:04,484 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-14 14:54:04,484 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-14 14:54:04,485 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-14 14:54:04,485 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-14 14:54:04,486 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-14 14:54:04,486 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-14 14:54:04,487 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-14 14:54:04,487 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-14 14:54:04,488 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-14 14:54:04,488 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-14 14:54:04,488 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-14 14:54:04,488 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-14 14:54:04,489 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-14 14:54:04,490 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-14 14:54:04,490 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2022-07-14 14:54:04,508 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-14 14:54:04,509 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-14 14:54:04,509 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-14 14:54:04,509 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-14 14:54:04,510 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-14 14:54:04,510 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-14 14:54:04,510 INFO L138 SettingsManager]: * Use SBE=true [2022-07-14 14:54:04,511 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-07-14 14:54:04,511 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-07-14 14:54:04,511 INFO L138 SettingsManager]: * Use old map elimination=false [2022-07-14 14:54:04,511 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-07-14 14:54:04,511 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-07-14 14:54:04,511 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-07-14 14:54:04,512 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-14 14:54:04,512 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-14 14:54:04,512 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-14 14:54:04,512 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-14 14:54:04,512 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-14 14:54:04,513 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-14 14:54:04,513 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-07-14 14:54:04,513 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-07-14 14:54:04,513 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-07-14 14:54:04,513 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-14 14:54:04,513 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-14 14:54:04,514 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-07-14 14:54:04,514 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-14 14:54:04,514 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-07-14 14:54:04,514 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-14 14:54:04,514 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-14 14:54:04,514 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-14 14:54:04,515 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-14 14:54:04,515 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-07-14 14:54:04,516 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6d80bfac8239edb36458a39079f29084e725943de73140087509ea8c53e688bf [2022-07-14 14:54:04,725 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-14 14:54:04,739 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-14 14:54:04,740 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-14 14:54:04,741 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-14 14:54:04,742 INFO L275 PluginConnector]: CDTParser initialized [2022-07-14 14:54:04,743 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-nla/dijkstra4-both-nt.c [2022-07-14 14:54:04,821 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/618cb270e/afb02e109aea46b2872751d3371de893/FLAG1ceec6081 [2022-07-14 14:54:05,103 INFO L306 CDTParser]: Found 1 translation units. [2022-07-14 14:54:05,104 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-nla/dijkstra4-both-nt.c [2022-07-14 14:54:05,108 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/618cb270e/afb02e109aea46b2872751d3371de893/FLAG1ceec6081 [2022-07-14 14:54:05,118 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/618cb270e/afb02e109aea46b2872751d3371de893 [2022-07-14 14:54:05,120 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-14 14:54:05,121 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-14 14:54:05,122 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-14 14:54:05,123 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-14 14:54:05,125 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-14 14:54:05,125 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 02:54:05" (1/1) ... [2022-07-14 14:54:05,126 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@111a0aa1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:54:05, skipping insertion in model container [2022-07-14 14:54:05,126 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 02:54:05" (1/1) ... [2022-07-14 14:54:05,130 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-14 14:54:05,139 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-14 14:54:05,237 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 14:54:05,239 INFO L203 MainTranslator]: Completed pre-run [2022-07-14 14:54:05,250 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 14:54:05,258 INFO L208 MainTranslator]: Completed translation [2022-07-14 14:54:05,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:54:05 WrapperNode [2022-07-14 14:54:05,258 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-14 14:54:05,259 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-14 14:54:05,259 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-14 14:54:05,259 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-14 14:54:05,264 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:54:05" (1/1) ... [2022-07-14 14:54:05,266 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:54:05" (1/1) ... [2022-07-14 14:54:05,276 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 27 [2022-07-14 14:54:05,277 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-14 14:54:05,277 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-14 14:54:05,277 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-14 14:54:05,277 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-14 14:54:05,282 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:54:05" (1/1) ... [2022-07-14 14:54:05,282 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:54:05" (1/1) ... [2022-07-14 14:54:05,283 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:54:05" (1/1) ... [2022-07-14 14:54:05,283 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:54:05" (1/1) ... [2022-07-14 14:54:05,284 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:54:05" (1/1) ... [2022-07-14 14:54:05,286 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:54:05" (1/1) ... [2022-07-14 14:54:05,286 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:54:05" (1/1) ... [2022-07-14 14:54:05,287 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-14 14:54:05,288 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-14 14:54:05,288 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-14 14:54:05,288 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-14 14:54:05,289 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:54:05" (1/1) ... [2022-07-14 14:54:05,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:54:05,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:54:05,331 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) [2022-07-14 14:54:05,343 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 [2022-07-14 14:54:05,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-14 14:54:05,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-14 14:54:05,391 INFO L234 CfgBuilder]: Building ICFG [2022-07-14 14:54:05,393 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-14 14:54:05,475 INFO L275 CfgBuilder]: Performing block encoding [2022-07-14 14:54:05,479 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-14 14:54:05,479 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-14 14:54:05,481 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 02:54:05 BoogieIcfgContainer [2022-07-14 14:54:05,481 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-14 14:54:05,482 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-07-14 14:54:05,482 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-07-14 14:54:05,484 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-07-14 14:54:05,485 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-14 14:54:05,485 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 14.07 02:54:05" (1/3) ... [2022-07-14 14:54:05,486 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@781335ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 14.07 02:54:05, skipping insertion in model container [2022-07-14 14:54:05,486 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-14 14:54:05,486 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:54:05" (2/3) ... [2022-07-14 14:54:05,486 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@781335ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 14.07 02:54:05, skipping insertion in model container [2022-07-14 14:54:05,486 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-14 14:54:05,486 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 02:54:05" (3/3) ... [2022-07-14 14:54:05,487 INFO L354 chiAutomizerObserver]: Analyzing ICFG dijkstra4-both-nt.c [2022-07-14 14:54:05,522 INFO L255 stractBuchiCegarLoop]: Interprodecural is true [2022-07-14 14:54:05,523 INFO L256 stractBuchiCegarLoop]: Hoare is false [2022-07-14 14:54:05,523 INFO L257 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-07-14 14:54:05,523 INFO L258 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-07-14 14:54:05,523 INFO L259 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-07-14 14:54:05,523 INFO L260 stractBuchiCegarLoop]: Difference is false [2022-07-14 14:54:05,523 INFO L261 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-07-14 14:54:05,523 INFO L265 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-07-14 14:54:05,526 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 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) [2022-07-14 14:54:05,536 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-07-14 14:54:05,536 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-14 14:54:05,537 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-14 14:54:05,541 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-07-14 14:54:05,541 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-07-14 14:54:05,541 INFO L287 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-07-14 14:54:05,541 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 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) [2022-07-14 14:54:05,542 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-07-14 14:54:05,542 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-14 14:54:05,542 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-14 14:54:05,543 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-07-14 14:54:05,543 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-07-14 14:54:05,547 INFO L752 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 6#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~n~0#1, main_~p~0#1, main_~q~0#1, main_~r~0#1, main_~h~0#1;havoc main_~n~0#1;havoc main_~p~0#1;havoc main_~q~0#1;havoc main_~r~0#1;havoc main_~h~0#1;main_~n~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~p~0#1 := 0;main_~q~0#1 := 1;main_~r~0#1 := main_~n~0#1;main_~h~0#1 := 0; 7#L40true assume main_~q~0#1 > main_~n~0#1; 8#L51-1true [2022-07-14 14:54:05,547 INFO L754 eck$LassoCheckResult]: Loop: 8#L51-1true assume !!(0 == main_~h~0#1 * main_~h~0#1 * main_~n~0#1 - 4 * main_~h~0#1 * main_~n~0#1 * main_~p~0#1 + 4 * (main_~n~0#1 * main_~n~0#1) * main_~q~0#1 - main_~n~0#1 * main_~q~0#1 * main_~q~0#1 - main_~h~0#1 * main_~h~0#1 * main_~r~0#1 + 4 * main_~h~0#1 * main_~p~0#1 * main_~r~0#1 - 8 * main_~n~0#1 * main_~q~0#1 * main_~r~0#1 + main_~q~0#1 * main_~q~0#1 * main_~r~0#1 + 4 * main_~q~0#1 * main_~r~0#1 * main_~r~0#1); 4#L51true assume !(4 * (if main_~q~0#1 < 0 && 0 != main_~q~0#1 % 4 then 1 + main_~q~0#1 / 4 else main_~q~0#1 / 4) == main_~q~0#1 && 2 * (if main_~p~0#1 < 0 && 0 != main_~p~0#1 % 2 then 1 + main_~p~0#1 / 2 else main_~p~0#1 / 2) == main_~p~0#1); 8#L51-1true [2022-07-14 14:54:05,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:54:05,552 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2022-07-14 14:54:05,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:54:05,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846938557] [2022-07-14 14:54:05,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:54:05,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:54:05,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:54:05,651 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 14:54:05,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:54:05,664 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 14:54:05,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:54:05,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1420, now seen corresponding path program 1 times [2022-07-14 14:54:05,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:54:05,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945653047] [2022-07-14 14:54:05,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:54:05,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:54:05,671 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 14:54:05,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1972705290] [2022-07-14 14:54:05,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:54:05,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 14:54:05,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:54:05,674 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 14:54:05,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:54:05,724 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 14:54:05,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-14 14:54:05,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:54:05,737 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 14:54:05,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:54:05,738 INFO L85 PathProgramCache]: Analyzing trace with hash 28693997, now seen corresponding path program 1 times [2022-07-14 14:54:05,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:54:05,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743848910] [2022-07-14 14:54:05,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:54:05,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:54:05,743 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 14:54:05,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [754009222] [2022-07-14 14:54:05,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:54:05,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 14:54:05,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:54:05,775 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 14:54:05,779 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-14 14:54:05,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:54:05,800 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 14:54:05,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:54:05,816 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 14:54:09,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 14.07 02:54:09 BoogieIcfgContainer [2022-07-14 14:54:09,743 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-07-14 14:54:09,744 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-14 14:54:09,744 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-14 14:54:09,744 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-14 14:54:09,744 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 02:54:05" (3/4) ... [2022-07-14 14:54:09,746 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2022-07-14 14:54:09,766 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-14 14:54:09,767 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-14 14:54:09,768 INFO L158 Benchmark]: Toolchain (without parser) took 4645.70ms. Allocated memory is still 86.0MB. Free memory was 49.8MB in the beginning and 43.4MB in the end (delta: 6.5MB). Peak memory consumption was 7.1MB. Max. memory is 16.1GB. [2022-07-14 14:54:09,768 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 86.0MB. Free memory is still 66.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-14 14:54:09,768 INFO L158 Benchmark]: CACSL2BoogieTranslator took 136.27ms. Allocated memory is still 86.0MB. Free memory was 49.6MB in the beginning and 64.2MB in the end (delta: -14.6MB). Peak memory consumption was 9.6MB. Max. memory is 16.1GB. [2022-07-14 14:54:09,769 INFO L158 Benchmark]: Boogie Procedure Inliner took 17.59ms. Allocated memory is still 86.0MB. Free memory was 64.0MB in the beginning and 62.7MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-14 14:54:09,769 INFO L158 Benchmark]: Boogie Preprocessor took 10.27ms. Allocated memory is still 86.0MB. Free memory was 62.7MB in the beginning and 61.7MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-14 14:54:09,769 INFO L158 Benchmark]: RCFGBuilder took 193.26ms. Allocated memory is still 86.0MB. Free memory was 61.7MB in the beginning and 52.8MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-14 14:54:09,770 INFO L158 Benchmark]: BuchiAutomizer took 4261.14ms. Allocated memory is still 86.0MB. Free memory was 52.6MB in the beginning and 45.2MB in the end (delta: 7.4MB). Peak memory consumption was 3.7MB. Max. memory is 16.1GB. [2022-07-14 14:54:09,770 INFO L158 Benchmark]: Witness Printer took 23.14ms. Allocated memory is still 86.0MB. Free memory was 45.2MB in the beginning and 43.4MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-14 14:54:09,772 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 86.0MB. Free memory is still 66.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 136.27ms. Allocated memory is still 86.0MB. Free memory was 49.6MB in the beginning and 64.2MB in the end (delta: -14.6MB). Peak memory consumption was 9.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 17.59ms. Allocated memory is still 86.0MB. Free memory was 64.0MB in the beginning and 62.7MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 10.27ms. Allocated memory is still 86.0MB. Free memory was 62.7MB in the beginning and 61.7MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 193.26ms. Allocated memory is still 86.0MB. Free memory was 61.7MB in the beginning and 52.8MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 4261.14ms. Allocated memory is still 86.0MB. Free memory was 52.6MB in the beginning and 45.2MB in the end (delta: 7.4MB). Peak memory consumption was 3.7MB. Max. memory is 16.1GB. * Witness Printer took 23.14ms. Allocated memory is still 86.0MB. Free memory was 45.2MB in the beginning and 43.4MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Trivial decomposition into one nonterminating module. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.2s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 4.1s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 0. 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 -1 states and ocurred in iteration -1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 41]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {} State at position 1 is {h=0, q=1, r=0, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2153c474=0, p=0, n=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 41]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L22] int n, p, q, r, h; [L24] n = __VERIFIER_nondet_int() [L26] p = 0 [L27] q = 1 [L28] r = n [L29] h = 0 [L40] COND TRUE q > n Loop: [L41] COND TRUE h * h * n - 4 * h * n * p + 4 * (n * n) * q - n * q * q - h * h * r + 4 * h * p * r - 8 * n * q * r + q * q * r + 4 * q * r * r == 0 [L51] COND FALSE !(4 * (q / 4) == q && 2 * (p / 2) == p) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2022-07-14 14:54:09,798 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-14 14:54:10,022 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-14 14:54:10,203 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)