./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-restricted-15/Flip.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 574ddb4e 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-restricted-15/Flip.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 d9e2051c5b6571a6a73804cb724a9fb9a88e5e404b5e850e3a8c166e2eba4aad --- Real Ultimate output --- This is Ultimate 0.2.2-?-574ddb4 [2023-02-19 00:16:10,381 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-19 00:16:10,383 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-19 00:16:10,412 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-19 00:16:10,413 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-19 00:16:10,415 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-19 00:16:10,417 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-19 00:16:10,419 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-19 00:16:10,422 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-19 00:16:10,426 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-19 00:16:10,426 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-19 00:16:10,427 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-19 00:16:10,428 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-19 00:16:10,428 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-19 00:16:10,429 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-19 00:16:10,430 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-19 00:16:10,431 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-19 00:16:10,431 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-19 00:16:10,432 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-19 00:16:10,434 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-19 00:16:10,435 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-19 00:16:10,436 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-19 00:16:10,437 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-19 00:16:10,437 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-19 00:16:10,440 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-19 00:16:10,440 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-19 00:16:10,441 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-19 00:16:10,441 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-19 00:16:10,442 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-19 00:16:10,442 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-19 00:16:10,443 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-19 00:16:10,443 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-19 00:16:10,444 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-19 00:16:10,444 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-19 00:16:10,445 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-19 00:16:10,445 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-19 00:16:10,446 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-19 00:16:10,446 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-19 00:16:10,446 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-19 00:16:10,447 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-19 00:16:10,447 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-19 00:16:10,450 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2023-02-19 00:16:10,472 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-19 00:16:10,472 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-19 00:16:10,472 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-19 00:16:10,473 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-19 00:16:10,474 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-19 00:16:10,474 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-19 00:16:10,474 INFO L138 SettingsManager]: * Use SBE=true [2023-02-19 00:16:10,474 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-02-19 00:16:10,475 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-02-19 00:16:10,475 INFO L138 SettingsManager]: * Use old map elimination=false [2023-02-19 00:16:10,475 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2023-02-19 00:16:10,475 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2023-02-19 00:16:10,475 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-02-19 00:16:10,476 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-19 00:16:10,476 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-19 00:16:10,476 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-19 00:16:10,476 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-19 00:16:10,476 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-02-19 00:16:10,476 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-02-19 00:16:10,477 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-02-19 00:16:10,477 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-19 00:16:10,477 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-02-19 00:16:10,477 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-19 00:16:10,477 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-02-19 00:16:10,478 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-19 00:16:10,478 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-19 00:16:10,478 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-19 00:16:10,478 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-19 00:16:10,479 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-02-19 00:16:10,479 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d9e2051c5b6571a6a73804cb724a9fb9a88e5e404b5e850e3a8c166e2eba4aad [2023-02-19 00:16:10,697 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-19 00:16:10,721 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-19 00:16:10,723 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-19 00:16:10,725 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-19 00:16:10,725 INFO L275 PluginConnector]: CDTParser initialized [2023-02-19 00:16:10,727 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-restricted-15/Flip.c [2023-02-19 00:16:11,929 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-19 00:16:12,129 INFO L351 CDTParser]: Found 1 translation units. [2023-02-19 00:16:12,130 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-restricted-15/Flip.c [2023-02-19 00:16:12,134 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40e638fc1/3a17bcbeb584471db399c87af3f6a808/FLAG52da3494f [2023-02-19 00:16:12,153 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40e638fc1/3a17bcbeb584471db399c87af3f6a808 [2023-02-19 00:16:12,156 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-19 00:16:12,158 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-19 00:16:12,162 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-19 00:16:12,162 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-19 00:16:12,171 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-19 00:16:12,172 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 12:16:12" (1/1) ... [2023-02-19 00:16:12,174 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f45eaaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 12:16:12, skipping insertion in model container [2023-02-19 00:16:12,175 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 12:16:12" (1/1) ... [2023-02-19 00:16:12,184 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-19 00:16:12,203 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-19 00:16:12,322 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-19 00:16:12,330 INFO L203 MainTranslator]: Completed pre-run [2023-02-19 00:16:12,343 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-19 00:16:12,353 INFO L208 MainTranslator]: Completed translation [2023-02-19 00:16:12,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 12:16:12 WrapperNode [2023-02-19 00:16:12,354 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-19 00:16:12,356 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-19 00:16:12,356 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-19 00:16:12,356 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-19 00:16:12,362 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 12:16:12" (1/1) ... [2023-02-19 00:16:12,368 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 12:16:12" (1/1) ... [2023-02-19 00:16:12,383 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 19 [2023-02-19 00:16:12,383 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-19 00:16:12,386 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-19 00:16:12,386 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-19 00:16:12,387 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-19 00:16:12,394 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 12:16:12" (1/1) ... [2023-02-19 00:16:12,395 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 12:16:12" (1/1) ... [2023-02-19 00:16:12,396 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 12:16:12" (1/1) ... [2023-02-19 00:16:12,396 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 12:16:12" (1/1) ... [2023-02-19 00:16:12,397 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 12:16:12" (1/1) ... [2023-02-19 00:16:12,400 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 12:16:12" (1/1) ... [2023-02-19 00:16:12,401 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 12:16:12" (1/1) ... [2023-02-19 00:16:12,402 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 12:16:12" (1/1) ... [2023-02-19 00:16:12,403 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-19 00:16:12,405 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-19 00:16:12,405 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-19 00:16:12,405 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-19 00:16:12,407 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 12:16:12" (1/1) ... [2023-02-19 00:16:12,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-19 00:16:12,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-19 00:16:12,437 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) [2023-02-19 00:16:12,461 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 [2023-02-19 00:16:12,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-19 00:16:12,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-19 00:16:12,552 INFO L235 CfgBuilder]: Building ICFG [2023-02-19 00:16:12,555 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-19 00:16:12,630 INFO L276 CfgBuilder]: Performing block encoding [2023-02-19 00:16:12,636 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-19 00:16:12,637 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-19 00:16:12,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 12:16:12 BoogieIcfgContainer [2023-02-19 00:16:12,639 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-19 00:16:12,641 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-02-19 00:16:12,641 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2023-02-19 00:16:12,644 INFO L275 PluginConnector]: BuchiAutomizer initialized [2023-02-19 00:16:12,645 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-19 00:16:12,646 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 19.02 12:16:12" (1/3) ... [2023-02-19 00:16:12,647 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@14b74ded and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.02 12:16:12, skipping insertion in model container [2023-02-19 00:16:12,647 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-19 00:16:12,647 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 12:16:12" (2/3) ... [2023-02-19 00:16:12,648 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@14b74ded and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.02 12:16:12, skipping insertion in model container [2023-02-19 00:16:12,648 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-19 00:16:12,648 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 12:16:12" (3/3) ... [2023-02-19 00:16:12,650 INFO L332 chiAutomizerObserver]: Analyzing ICFG Flip.c [2023-02-19 00:16:12,706 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-02-19 00:16:12,707 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-02-19 00:16:12,707 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-02-19 00:16:12,707 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-02-19 00:16:12,707 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-02-19 00:16:12,707 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-02-19 00:16:12,707 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-02-19 00:16:12,708 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-02-19 00:16:12,711 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 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) [2023-02-19 00:16:12,725 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2023-02-19 00:16:12,726 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-19 00:16:12,726 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-19 00:16:12,730 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-02-19 00:16:12,730 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-02-19 00:16:12,730 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-02-19 00:16:12,731 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 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) [2023-02-19 00:16:12,732 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2023-02-19 00:16:12,732 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-19 00:16:12,732 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-19 00:16:12,732 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-02-19 00:16:12,732 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-02-19 00:16:12,739 INFO L748 eck$LassoCheckResult]: Stem: 5#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true; 7#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~i~0#1, main_~j~0#1, main_~t~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~t~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~j~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~t~0#1 := 0; 4#L13-2true [2023-02-19 00:16:12,739 INFO L750 eck$LassoCheckResult]: Loop: 4#L13-2true assume !!(0 != main_~i~0#1 && 0 != main_~j~0#1);main_~t~0#1 := main_~i~0#1;main_~i~0#1 := main_~j~0#1;main_~j~0#1 := main_~t~0#1; 4#L13-2true [2023-02-19 00:16:12,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-19 00:16:12,757 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2023-02-19 00:16:12,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-19 00:16:12,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460205113] [2023-02-19 00:16:12,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-19 00:16:12,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-19 00:16:12,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-19 00:16:12,828 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-19 00:16:12,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-19 00:16:12,856 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-19 00:16:12,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-19 00:16:12,859 INFO L85 PathProgramCache]: Analyzing trace with hash 42, now seen corresponding path program 1 times [2023-02-19 00:16:12,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-19 00:16:12,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155000840] [2023-02-19 00:16:12,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-19 00:16:12,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-19 00:16:12,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-19 00:16:12,879 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-19 00:16:12,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-19 00:16:12,888 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-19 00:16:12,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-19 00:16:12,890 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2023-02-19 00:16:12,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-19 00:16:12,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621751960] [2023-02-19 00:16:12,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-19 00:16:12,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-19 00:16:12,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-19 00:16:12,905 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-19 00:16:12,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-19 00:16:12,916 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-19 00:16:12,950 INFO L210 LassoAnalysis]: Preferences: [2023-02-19 00:16:12,950 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-19 00:16:12,950 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-19 00:16:12,951 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-19 00:16:12,951 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-02-19 00:16:12,951 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-19 00:16:12,951 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-19 00:16:12,952 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-19 00:16:12,952 INFO L133 ssoRankerPreferences]: Filename of dumped script: Flip.c_Iteration1_Lasso [2023-02-19 00:16:12,952 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-19 00:16:12,952 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-19 00:16:12,969 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-19 00:16:12,991 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-19 00:16:12,996 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-19 00:16:12,998 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-19 00:16:12,999 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-19 00:16:13,001 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-19 00:16:13,014 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-19 00:16:13,015 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-02-19 00:16:13,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-19 00:16:13,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-19 00:16:13,020 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) [2023-02-19 00:16:13,022 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 [2023-02-19 00:16:13,027 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-19 00:16:13,027 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-19 00:16:13,053 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-19 00:16:13,053 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: [] [2023-02-19 00:16:13,066 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 [2023-02-19 00:16:13,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-19 00:16:13,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-19 00:16:13,069 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) [2023-02-19 00:16:13,071 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 [2023-02-19 00:16:13,073 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-19 00:16:13,073 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-19 00:16:13,113 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 [2023-02-19 00:16:13,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-19 00:16:13,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-19 00:16:13,115 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) [2023-02-19 00:16:13,117 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 [2023-02-19 00:16:13,119 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-19 00:16:13,119 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-19 00:16:13,405 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-19 00:16:13,406 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~i~0#1=0, ULTIMATE.start_main_~t~0#1=0, ULTIMATE.start_main_~j~0#1=0} Honda state: {ULTIMATE.start_main_~i~0#1=2, ULTIMATE.start_main_~t~0#1=0, ULTIMATE.start_main_~j~0#1=2} Generalized eigenvectors: [{ULTIMATE.start_main_~i~0#1=0, ULTIMATE.start_main_~t~0#1=-3, ULTIMATE.start_main_~j~0#1=0}, {ULTIMATE.start_main_~i~0#1=0, ULTIMATE.start_main_~t~0#1=-1, ULTIMATE.start_main_~j~0#1=0}, {ULTIMATE.start_main_~i~0#1=0, ULTIMATE.start_main_~t~0#1=6, ULTIMATE.start_main_~j~0#1=0}] Lambdas: [0, 6, 0] Nus: [0, 1] [2023-02-19 00:16:13,410 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 [2023-02-19 00:16:13,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-19 00:16:13,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-19 00:16:13,411 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) [2023-02-19 00:16:13,413 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 [2023-02-19 00:16:13,415 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-19 00:16:13,416 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-19 00:16:13,424 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-19 00:16:13,424 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet1#1=0} Honda state: {ULTIMATE.start_main_#t~nondet1#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-19 00:16:13,431 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2023-02-19 00:16:13,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-19 00:16:13,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-19 00:16:13,433 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) [2023-02-19 00:16:13,434 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 [2023-02-19 00:16:13,437 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-19 00:16:13,437 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-19 00:16:13,462 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-19 00:16:13,462 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: [] [2023-02-19 00:16:13,467 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 [2023-02-19 00:16:13,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-19 00:16:13,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-19 00:16:13,471 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) [2023-02-19 00:16:13,472 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 [2023-02-19 00:16:13,476 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-19 00:16:13,476 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-19 00:16:13,485 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-19 00:16:13,485 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#res#1=0} Honda state: {ULTIMATE.start_main_#res#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-19 00:16:13,488 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2023-02-19 00:16:13,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-19 00:16:13,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-19 00:16:13,490 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) [2023-02-19 00:16:13,491 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 [2023-02-19 00:16:13,493 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-19 00:16:13,493 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-19 00:16:13,501 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-19 00:16:13,501 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet0#1=0} Honda state: {ULTIMATE.start_main_#t~nondet0#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-19 00:16:13,507 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 [2023-02-19 00:16:13,516 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~true [2023-02-19 00:16:13,517 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~false [2023-02-19 00:16:13,518 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~true [2023-02-19 00:16:13,518 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~false [2023-02-19 00:16:13,518 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~true [2023-02-19 00:16:13,518 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~false [2023-02-19 00:16:13,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 19.02 12:16:13 BoogieIcfgContainer [2023-02-19 00:16:13,527 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-02-19 00:16:13,527 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-19 00:16:13,527 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-19 00:16:13,528 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-19 00:16:13,528 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 12:16:12" (3/4) ... [2023-02-19 00:16:13,530 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2023-02-19 00:16:13,556 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-19 00:16:13,557 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-19 00:16:13,558 INFO L158 Benchmark]: Toolchain (without parser) took 1399.52ms. Allocated memory is still 125.8MB. Free memory was 82.0MB in the beginning and 74.9MB in the end (delta: 7.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-02-19 00:16:13,558 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 102.8MB. Free memory is still 75.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-19 00:16:13,559 INFO L158 Benchmark]: CACSL2BoogieTranslator took 192.68ms. Allocated memory is still 125.8MB. Free memory was 81.6MB in the beginning and 72.4MB in the end (delta: 9.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-19 00:16:13,559 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.59ms. Allocated memory is still 125.8MB. Free memory was 72.4MB in the beginning and 71.1MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-19 00:16:13,560 INFO L158 Benchmark]: Boogie Preprocessor took 17.19ms. Allocated memory is still 125.8MB. Free memory was 71.1MB in the beginning and 69.9MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-19 00:16:13,560 INFO L158 Benchmark]: RCFGBuilder took 234.45ms. Allocated memory is still 125.8MB. Free memory was 69.9MB in the beginning and 61.9MB in the end (delta: 7.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-02-19 00:16:13,561 INFO L158 Benchmark]: BuchiAutomizer took 886.25ms. Allocated memory is still 125.8MB. Free memory was 61.5MB in the beginning and 76.5MB in the end (delta: -15.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-19 00:16:13,561 INFO L158 Benchmark]: Witness Printer took 29.43ms. Allocated memory is still 125.8MB. Free memory was 76.5MB in the beginning and 74.9MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-19 00:16:13,563 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 102.8MB. Free memory is still 75.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 192.68ms. Allocated memory is still 125.8MB. Free memory was 81.6MB in the beginning and 72.4MB in the end (delta: 9.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.59ms. Allocated memory is still 125.8MB. Free memory was 72.4MB in the beginning and 71.1MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 17.19ms. Allocated memory is still 125.8MB. Free memory was 71.1MB in the beginning and 69.9MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 234.45ms. Allocated memory is still 125.8MB. Free memory was 69.9MB in the beginning and 61.9MB in the end (delta: 7.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 886.25ms. Allocated memory is still 125.8MB. Free memory was 61.5MB in the beginning and 76.5MB in the end (delta: -15.0MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 29.43ms. Allocated memory is still 125.8MB. Free memory was 76.5MB in the beginning and 74.9MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~true - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~false - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~true - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~false - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~true - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~false * 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 0.8s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.7s. 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: Lassos: inital21 mio100 ax161 hnf100 lsp61 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq214 hnf93 smp100 dnf276 smp100 tf100 neg93 sie114 LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 1 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.4s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - GeometricNonTerminationArgumentResult [Line: 13]: Nontermination argument in form of an infinite program execution. [2023-02-19 00:16:13,570 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~true [2023-02-19 00:16:13,570 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~false [2023-02-19 00:16:13,571 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~true [2023-02-19 00:16:13,571 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~false [2023-02-19 00:16:13,571 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~true [2023-02-19 00:16:13,572 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~false [2023-02-19 00:16:13,572 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~true [2023-02-19 00:16:13,572 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~false [2023-02-19 00:16:13,573 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~true [2023-02-19 00:16:13,573 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~false [2023-02-19 00:16:13,573 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~true [2023-02-19 00:16:13,573 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~unnamed0~0~false Nontermination argument in form of an infinite execution State at position 0 is {j=0, i=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2bbbcd4=0, ~unnamed0~0~true=1, ~unnamed0~0~false=0, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5475ab56=0, t=0} State at position 1 is {j=2, i=2, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2bbbcd4=0, ~unnamed0~0~true=1, ~unnamed0~0~false=0, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5475ab56=0, t=0} For i>1, the state at position i is {j=2 + sum_{k=0}^i 0, i=2 + sum_{k=0}^i 0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2bbbcd4=0 + sum_{k=0}^i 0, ~unnamed0~0~true=1 + sum_{k=0}^i 0, ~unnamed0~0~false=0 + sum_{k=0}^i 0, \result=0 + sum_{k=0}^i 0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5475ab56=0 + sum_{k=0}^i 0, t=0 + sum_{k=0}^i -3*0^k + -1*6^k + 6*0^k + 6*k*6^(k-1)} - StatisticsResult: NonterminationArgumentStatistics Unbounded Execution 3GEVs Lambdas: [0, 6, 0] Mus: [0, 1] - NonterminatingLassoResult [Line: 13]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L6] int i; [L7] int j; [L8] int t; [L9] i = __VERIFIER_nondet_int() [L10] j = __VERIFIER_nondet_int() [L11] t = 0 Loop: [L13] COND TRUE i != 0 && j != 0 [L14] t = i [L15] i = j [L16] j = t End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2023-02-19 00:16:13,584 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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)