./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-crafted/Rotation180-1.c --full-output -ea --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 03d7b7b3 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -ea -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-crafted/Rotation180-1.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 fde09a60595b1ccfdc4082db9307f665f7d9aa8adcf6aa0f827e624d65c22a35 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-03d7b7b [2022-02-21 03:24:18,413 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-21 03:24:18,414 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-21 03:24:18,437 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-21 03:24:18,441 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-21 03:24:18,442 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-21 03:24:18,443 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-21 03:24:18,444 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-21 03:24:18,445 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-21 03:24:18,446 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-21 03:24:18,447 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-21 03:24:18,447 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-21 03:24:18,448 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-21 03:24:18,448 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-21 03:24:18,449 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-21 03:24:18,450 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-21 03:24:18,450 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-21 03:24:18,451 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-21 03:24:18,452 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-21 03:24:18,454 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-21 03:24:18,455 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-21 03:24:18,460 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-21 03:24:18,462 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-21 03:24:18,464 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-21 03:24:18,471 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-21 03:24:18,472 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-21 03:24:18,472 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-21 03:24:18,474 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-21 03:24:18,474 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-21 03:24:18,476 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-02-21 03:24:18,479 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-21 03:24:18,479 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-21 03:24:18,480 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-21 03:24:18,481 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-21 03:24:18,482 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-21 03:24:18,482 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-21 03:24:18,483 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-21 03:24:18,483 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-21 03:24:18,484 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-21 03:24:18,484 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-21 03:24:18,487 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-21 03:24:18,488 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2022-02-21 03:24:18,555 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-21 03:24:18,555 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-21 03:24:18,556 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-21 03:24:18,556 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-21 03:24:18,557 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-21 03:24:18,558 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-21 03:24:18,558 INFO L138 SettingsManager]: * Use SBE=true [2022-02-21 03:24:18,558 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-02-21 03:24:18,558 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-02-21 03:24:18,558 INFO L138 SettingsManager]: * Use old map elimination=false [2022-02-21 03:24:18,559 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-02-21 03:24:18,559 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-02-21 03:24:18,559 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-02-21 03:24:18,559 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-21 03:24:18,560 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-02-21 03:24:18,560 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-21 03:24:18,560 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-21 03:24:18,560 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-02-21 03:24:18,560 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-02-21 03:24:18,560 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-02-21 03:24:18,560 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-21 03:24:18,561 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-02-21 03:24:18,561 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-21 03:24:18,561 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-02-21 03:24:18,561 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-21 03:24:18,561 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-21 03:24:18,561 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-21 03:24:18,562 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-21 03:24:18,562 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-02-21 03:24:18,563 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fde09a60595b1ccfdc4082db9307f665f7d9aa8adcf6aa0f827e624d65c22a35 [2022-02-21 03:24:18,734 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-21 03:24:18,747 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-21 03:24:18,749 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-21 03:24:18,750 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-21 03:24:18,750 INFO L275 PluginConnector]: CDTParser initialized [2022-02-21 03:24:18,751 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/Rotation180-1.c [2022-02-21 03:24:18,791 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2058c70ce/b2e7626d4a084433b2500cf92506e90e/FLAGc251599bf [2022-02-21 03:24:19,146 INFO L306 CDTParser]: Found 1 translation units. [2022-02-21 03:24:19,146 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/Rotation180-1.c [2022-02-21 03:24:19,150 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2058c70ce/b2e7626d4a084433b2500cf92506e90e/FLAGc251599bf [2022-02-21 03:24:19,580 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2058c70ce/b2e7626d4a084433b2500cf92506e90e [2022-02-21 03:24:19,582 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-21 03:24:19,583 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-02-21 03:24:19,602 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-21 03:24:19,602 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-21 03:24:19,604 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-21 03:24:19,606 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 03:24:19" (1/1) ... [2022-02-21 03:24:19,607 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@729c7c66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:24:19, skipping insertion in model container [2022-02-21 03:24:19,607 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 03:24:19" (1/1) ... [2022-02-21 03:24:19,611 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-21 03:24:19,619 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-21 03:24:19,703 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-21 03:24:19,706 INFO L203 MainTranslator]: Completed pre-run [2022-02-21 03:24:19,719 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-21 03:24:19,731 INFO L208 MainTranslator]: Completed translation [2022-02-21 03:24:19,731 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:24:19 WrapperNode [2022-02-21 03:24:19,732 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-21 03:24:19,733 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-21 03:24:19,733 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-21 03:24:19,733 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-21 03:24:19,738 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:24:19" (1/1) ... [2022-02-21 03:24:19,741 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:24:19" (1/1) ... [2022-02-21 03:24:19,759 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 24 [2022-02-21 03:24:19,760 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-21 03:24:19,760 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-21 03:24:19,760 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-21 03:24:19,761 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-21 03:24:19,766 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:24:19" (1/1) ... [2022-02-21 03:24:19,766 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:24:19" (1/1) ... [2022-02-21 03:24:19,766 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:24:19" (1/1) ... [2022-02-21 03:24:19,767 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:24:19" (1/1) ... [2022-02-21 03:24:19,768 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:24:19" (1/1) ... [2022-02-21 03:24:19,770 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:24:19" (1/1) ... [2022-02-21 03:24:19,771 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:24:19" (1/1) ... [2022-02-21 03:24:19,771 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-21 03:24:19,772 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-21 03:24:19,772 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-21 03:24:19,772 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-21 03:24:19,773 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:24:19" (1/1) ... [2022-02-21 03:24:19,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-02-21 03:24:19,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-21 03:24:19,795 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) [2022-02-21 03:24:19,808 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 [2022-02-21 03:24:19,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-21 03:24:19,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-21 03:24:19,861 INFO L234 CfgBuilder]: Building ICFG [2022-02-21 03:24:19,863 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-21 03:24:19,961 INFO L275 CfgBuilder]: Performing block encoding [2022-02-21 03:24:19,969 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-21 03:24:19,969 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-02-21 03:24:19,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 03:24:19 BoogieIcfgContainer [2022-02-21 03:24:19,971 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-21 03:24:19,972 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-02-21 03:24:19,972 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-02-21 03:24:19,974 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-02-21 03:24:19,975 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-02-21 03:24:19,975 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 21.02 03:24:19" (1/3) ... [2022-02-21 03:24:19,976 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1bd2d869 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.02 03:24:19, skipping insertion in model container [2022-02-21 03:24:19,976 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-02-21 03:24:19,976 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:24:19" (2/3) ... [2022-02-21 03:24:19,977 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1bd2d869 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.02 03:24:19, skipping insertion in model container [2022-02-21 03:24:19,977 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-02-21 03:24:19,977 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 03:24:19" (3/3) ... [2022-02-21 03:24:19,978 INFO L388 chiAutomizerObserver]: Analyzing ICFG Rotation180-1.c [2022-02-21 03:24:20,007 INFO L359 BuchiCegarLoop]: Interprodecural is true [2022-02-21 03:24:20,007 INFO L360 BuchiCegarLoop]: Hoare is false [2022-02-21 03:24:20,007 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-02-21 03:24:20,007 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-02-21 03:24:20,007 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-02-21 03:24:20,008 INFO L364 BuchiCegarLoop]: Difference is false [2022-02-21 03:24:20,008 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-02-21 03:24:20,008 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2022-02-21 03:24:20,021 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 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) [2022-02-21 03:24:20,044 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2022-02-21 03:24:20,044 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-02-21 03:24:20,044 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-02-21 03:24:20,048 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2022-02-21 03:24:20,048 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2022-02-21 03:24:20,048 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2022-02-21 03:24:20,048 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 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) [2022-02-21 03:24:20,051 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2022-02-21 03:24:20,051 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-02-21 03:24:20,052 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-02-21 03:24:20,052 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2022-02-21 03:24:20,052 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2022-02-21 03:24:20,057 INFO L791 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 10#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~oldx~0#1, main_~x~0#1, main_~y~0#1;havoc main_~oldx~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 7#L21true assume !!(main_~x~0#1 >= -2147483647); 4#L22true assume !!(main_~y~0#1 >= -2147483647); 6#L23-2true [2022-02-21 03:24:20,057 INFO L793 eck$LassoCheckResult]: Loop: 6#L23-2true assume !!(0 != ~unnamed0~0~true);main_~oldx~0#1 := main_~x~0#1;main_~x~0#1 := -main_~y~0#1;main_~y~0#1 := main_~oldx~0#1; 6#L23-2true [2022-02-21 03:24:20,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-21 03:24:20,065 INFO L85 PathProgramCache]: Analyzing trace with hash 925672, now seen corresponding path program 1 times [2022-02-21 03:24:20,071 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-21 03:24:20,072 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991111715] [2022-02-21 03:24:20,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-21 03:24:20,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-21 03:24:20,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-21 03:24:20,138 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-21 03:24:20,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-21 03:24:20,162 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-21 03:24:20,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-21 03:24:20,164 INFO L85 PathProgramCache]: Analyzing trace with hash 52, now seen corresponding path program 1 times [2022-02-21 03:24:20,165 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-21 03:24:20,165 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555094583] [2022-02-21 03:24:20,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-21 03:24:20,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-21 03:24:20,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-21 03:24:20,179 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-21 03:24:20,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-21 03:24:20,188 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-21 03:24:20,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-21 03:24:20,189 INFO L85 PathProgramCache]: Analyzing trace with hash 28695853, now seen corresponding path program 1 times [2022-02-21 03:24:20,189 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-21 03:24:20,190 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893340088] [2022-02-21 03:24:20,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-21 03:24:20,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-21 03:24:20,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-21 03:24:20,206 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-21 03:24:20,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-21 03:24:20,215 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-21 03:24:20,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.02 03:24:20 BoogieIcfgContainer [2022-02-21 03:24:20,380 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-02-21 03:24:20,381 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-02-21 03:24:20,381 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-02-21 03:24:20,381 INFO L275 PluginConnector]: Witness Printer initialized [2022-02-21 03:24:20,382 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 03:24:19" (3/4) ... [2022-02-21 03:24:20,384 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2022-02-21 03:24:20,410 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-02-21 03:24:20,411 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-02-21 03:24:20,414 INFO L158 Benchmark]: Toolchain (without parser) took 828.62ms. Allocated memory is still 100.7MB. Free memory was 55.7MB in the beginning and 49.9MB in the end (delta: 5.9MB). Peak memory consumption was 3.7MB. Max. memory is 16.1GB. [2022-02-21 03:24:20,416 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 100.7MB. Free memory was 73.1MB in the beginning and 73.0MB in the end (delta: 85.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-02-21 03:24:20,416 INFO L158 Benchmark]: CACSL2BoogieTranslator took 130.12ms. Allocated memory is still 100.7MB. Free memory was 55.6MB in the beginning and 80.5MB in the end (delta: -25.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-02-21 03:24:20,417 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.33ms. Allocated memory is still 100.7MB. Free memory was 80.5MB in the beginning and 79.2MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-02-21 03:24:20,417 INFO L158 Benchmark]: Boogie Preprocessor took 11.09ms. Allocated memory is still 100.7MB. Free memory was 79.2MB in the beginning and 78.2MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-02-21 03:24:20,417 INFO L158 Benchmark]: RCFGBuilder took 198.91ms. Allocated memory is still 100.7MB. Free memory was 78.2MB in the beginning and 69.6MB in the end (delta: 8.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-02-21 03:24:20,418 INFO L158 Benchmark]: BuchiAutomizer took 408.86ms. Allocated memory is still 100.7MB. Free memory was 69.6MB in the beginning and 51.7MB in the end (delta: 17.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-02-21 03:24:20,418 INFO L158 Benchmark]: Witness Printer took 29.73ms. Allocated memory is still 100.7MB. Free memory was 51.4MB in the beginning and 49.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-02-21 03:24:20,421 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 100.7MB. Free memory was 73.1MB in the beginning and 73.0MB in the end (delta: 85.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 130.12ms. Allocated memory is still 100.7MB. Free memory was 55.6MB in the beginning and 80.5MB in the end (delta: -25.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.33ms. Allocated memory is still 100.7MB. Free memory was 80.5MB in the beginning and 79.2MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 11.09ms. Allocated memory is still 100.7MB. Free memory was 79.2MB in the beginning and 78.2MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 198.91ms. Allocated memory is still 100.7MB. Free memory was 78.2MB in the beginning and 69.6MB in the end (delta: 8.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 408.86ms. Allocated memory is still 100.7MB. Free memory was 69.6MB in the beginning and 51.7MB in the end (delta: 17.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Witness Printer took 29.73ms. Allocated memory is still 100.7MB. Free memory was 51.4MB in the beginning and 49.9MB in the end (delta: 1.6MB). 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 0.3s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.3s. 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 - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 23]: 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 {y=0, oldx=0, x=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3868025=0, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3436d847=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 23]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L15] int oldx; [L16] int x; [L17] int y; [L18] x = __VERIFIER_nondet_int() [L19] y = __VERIFIER_nondet_int() [L21] COND FALSE !(!(x>=-2147483647)) [L22] COND FALSE !(!(y>=-2147483647)) Loop: [L23] COND TRUE \read(true) [L24] oldx = x [L25] x = -y [L26] y = oldx End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2022-02-21 03:24:20,453 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)