./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-crafted/Rotation180-1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-crafted/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 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 22:58:08,013 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 22:58:08,014 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 22:58:08,056 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 22:58:08,056 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 22:58:08,057 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 22:58:08,058 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 22:58:08,071 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 22:58:08,073 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 22:58:08,076 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 22:58:08,077 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 22:58:08,077 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 22:58:08,078 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 22:58:08,079 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 22:58:08,081 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 22:58:08,083 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 22:58:08,084 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 22:58:08,084 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 22:58:08,088 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 22:58:08,090 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 22:58:08,093 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 22:58:08,093 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 22:58:08,094 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 22:58:08,095 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 22:58:08,097 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 22:58:08,099 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 22:58:08,100 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 22:58:08,100 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 22:58:08,101 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 22:58:08,102 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 22:58:08,102 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 22:58:08,102 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 22:58:08,103 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 22:58:08,104 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 22:58:08,105 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 22:58:08,106 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 22:58:08,107 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 22:58:08,107 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 22:58:08,107 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 22:58:08,108 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 22:58:08,108 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 22:58:08,111 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-12-14 22:58:08,138 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 22:58:08,138 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 22:58:08,138 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 22:58:08,138 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 22:58:08,139 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 22:58:08,140 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 22:58:08,140 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 22:58:08,140 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-14 22:58:08,140 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-14 22:58:08,140 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-14 22:58:08,141 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-14 22:58:08,141 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-14 22:58:08,141 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-14 22:58:08,141 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 22:58:08,141 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-14 22:58:08,142 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 22:58:08,142 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 22:58:08,142 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-14 22:58:08,142 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-14 22:58:08,142 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-14 22:58:08,142 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 22:58:08,143 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-14 22:58:08,143 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 22:58:08,143 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-14 22:58:08,143 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 22:58:08,143 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 22:58:08,143 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 22:58:08,143 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 22:58:08,144 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 22:58:08,144 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-14 22:58:08,145 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fde09a60595b1ccfdc4082db9307f665f7d9aa8adcf6aa0f827e624d65c22a35 [2021-12-14 22:58:08,334 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 22:58:08,358 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 22:58:08,360 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 22:58:08,361 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 22:58:08,361 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 22:58:08,362 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/Rotation180-1.c [2021-12-14 22:58:08,415 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ba7294a0/1ec96a45be094c989db0b391470caad7/FLAG62c509ca6 [2021-12-14 22:58:08,759 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 22:58:08,759 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/Rotation180-1.c [2021-12-14 22:58:08,767 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ba7294a0/1ec96a45be094c989db0b391470caad7/FLAG62c509ca6 [2021-12-14 22:58:08,774 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ba7294a0/1ec96a45be094c989db0b391470caad7 [2021-12-14 22:58:08,776 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 22:58:08,777 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 22:58:08,778 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 22:58:08,778 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 22:58:08,780 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 22:58:08,780 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:58:08" (1/1) ... [2021-12-14 22:58:08,781 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7652e232 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:58:08, skipping insertion in model container [2021-12-14 22:58:08,781 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:58:08" (1/1) ... [2021-12-14 22:58:08,787 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 22:58:08,797 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 22:58:08,892 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 22:58:08,898 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 22:58:08,908 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 22:58:08,915 INFO L208 MainTranslator]: Completed translation [2021-12-14 22:58:08,915 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:58:08 WrapperNode [2021-12-14 22:58:08,916 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 22:58:08,916 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 22:58:08,916 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 22:58:08,917 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 22:58:08,921 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:58:08" (1/1) ... [2021-12-14 22:58:08,924 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:58:08" (1/1) ... [2021-12-14 22:58:08,934 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 24 [2021-12-14 22:58:08,934 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 22:58:08,935 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 22:58:08,935 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 22:58:08,935 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 22:58:08,940 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:58:08" (1/1) ... [2021-12-14 22:58:08,940 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:58:08" (1/1) ... [2021-12-14 22:58:08,941 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:58:08" (1/1) ... [2021-12-14 22:58:08,941 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:58:08" (1/1) ... [2021-12-14 22:58:08,942 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:58:08" (1/1) ... [2021-12-14 22:58:08,944 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:58:08" (1/1) ... [2021-12-14 22:58:08,944 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:58:08" (1/1) ... [2021-12-14 22:58:08,945 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 22:58:08,946 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 22:58:08,946 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 22:58:08,946 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 22:58:08,947 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:58:08" (1/1) ... [2021-12-14 22:58:08,951 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:08,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:09,012 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 22:58:09,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-12-14 22:58:09,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 22:58:09,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 22:58:09,083 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 22:58:09,084 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 22:58:09,148 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 22:58:09,153 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 22:58:09,153 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-14 22:58:09,154 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:58:09 BoogieIcfgContainer [2021-12-14 22:58:09,155 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 22:58:09,156 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-14 22:58:09,156 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-14 22:58:09,158 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-14 22:58:09,158 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-14 22:58:09,158 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 14.12 10:58:08" (1/3) ... [2021-12-14 22:58:09,159 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6cbb3aaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 14.12 10:58:09, skipping insertion in model container [2021-12-14 22:58:09,159 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-14 22:58:09,159 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:58:08" (2/3) ... [2021-12-14 22:58:09,160 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6cbb3aaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 14.12 10:58:09, skipping insertion in model container [2021-12-14 22:58:09,160 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-14 22:58:09,160 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:58:09" (3/3) ... [2021-12-14 22:58:09,161 INFO L388 chiAutomizerObserver]: Analyzing ICFG Rotation180-1.c [2021-12-14 22:58:09,199 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-14 22:58:09,199 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-14 22:58:09,199 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-14 22:58:09,199 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-14 22:58:09,200 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-14 22:58:09,200 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-14 22:58:09,200 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-14 22:58:09,200 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-14 22:58:09,209 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) [2021-12-14 22:58:09,224 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-12-14 22:58:09,224 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 22:58:09,224 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 22:58:09,228 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-12-14 22:58:09,228 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-12-14 22:58:09,228 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-14 22:58:09,228 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) [2021-12-14 22:58:09,229 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-12-14 22:58:09,229 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 22:58:09,229 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 22:58:09,230 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-12-14 22:58:09,230 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-12-14 22:58:09,234 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 [2021-12-14 22:58:09,234 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 [2021-12-14 22:58:09,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:58:09,238 INFO L85 PathProgramCache]: Analyzing trace with hash 925672, now seen corresponding path program 1 times [2021-12-14 22:58:09,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 22:58:09,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366784146] [2021-12-14 22:58:09,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:58:09,245 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 22:58:09,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:58:09,288 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 22:58:09,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:58:09,299 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 22:58:09,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:58:09,301 INFO L85 PathProgramCache]: Analyzing trace with hash 52, now seen corresponding path program 1 times [2021-12-14 22:58:09,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 22:58:09,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972579051] [2021-12-14 22:58:09,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:58:09,302 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 22:58:09,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:58:09,307 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 22:58:09,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:58:09,310 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 22:58:09,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:58:09,311 INFO L85 PathProgramCache]: Analyzing trace with hash 28695853, now seen corresponding path program 1 times [2021-12-14 22:58:09,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 22:58:09,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688046552] [2021-12-14 22:58:09,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:58:09,312 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 22:58:09,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:58:09,316 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 22:58:09,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:58:09,319 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 22:58:09,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 14.12 10:58:09 BoogieIcfgContainer [2021-12-14 22:58:09,399 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-12-14 22:58:09,400 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-14 22:58:09,400 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-14 22:58:09,400 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-14 22:58:09,400 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:58:09" (3/4) ... [2021-12-14 22:58:09,402 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-12-14 22:58:09,437 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-14 22:58:09,437 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-14 22:58:09,450 INFO L158 Benchmark]: Toolchain (without parser) took 661.00ms. Allocated memory was 94.4MB in the beginning and 125.8MB in the end (delta: 31.5MB). Free memory was 66.4MB in the beginning and 74.8MB in the end (delta: -8.4MB). Peak memory consumption was 22.4MB. Max. memory is 16.1GB. [2021-12-14 22:58:09,450 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 94.4MB. Free memory was 55.7MB in the beginning and 55.7MB in the end (delta: 42.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 22:58:09,451 INFO L158 Benchmark]: CACSL2BoogieTranslator took 137.89ms. Allocated memory was 94.4MB in the beginning and 125.8MB in the end (delta: 31.5MB). Free memory was 66.1MB in the beginning and 103.6MB in the end (delta: -37.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-14 22:58:09,451 INFO L158 Benchmark]: Boogie Procedure Inliner took 17.99ms. Allocated memory is still 125.8MB. Free memory was 103.6MB in the beginning and 102.0MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 22:58:09,452 INFO L158 Benchmark]: Boogie Preprocessor took 10.35ms. Allocated memory is still 125.8MB. Free memory was 102.0MB in the beginning and 100.9MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-14 22:58:09,453 INFO L158 Benchmark]: RCFGBuilder took 209.02ms. Allocated memory is still 125.8MB. Free memory was 100.9MB in the beginning and 92.5MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-14 22:58:09,453 INFO L158 Benchmark]: BuchiAutomizer took 243.57ms. Allocated memory is still 125.8MB. Free memory was 92.5MB in the beginning and 76.3MB in the end (delta: 16.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-12-14 22:58:09,454 INFO L158 Benchmark]: Witness Printer took 37.97ms. Allocated memory is still 125.8MB. Free memory was 76.3MB in the beginning and 74.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-14 22:58:09,457 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 94.4MB. Free memory was 55.7MB in the beginning and 55.7MB in the end (delta: 42.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 137.89ms. Allocated memory was 94.4MB in the beginning and 125.8MB in the end (delta: 31.5MB). Free memory was 66.1MB in the beginning and 103.6MB in the end (delta: -37.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 17.99ms. Allocated memory is still 125.8MB. Free memory was 103.6MB in the beginning and 102.0MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 10.35ms. Allocated memory is still 125.8MB. Free memory was 102.0MB in the beginning and 100.9MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 209.02ms. Allocated memory is still 125.8MB. Free memory was 100.9MB in the beginning and 92.5MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 243.57ms. Allocated memory is still 125.8MB. Free memory was 92.5MB in the beginning and 76.3MB in the end (delta: 16.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 37.97ms. Allocated memory is still 125.8MB. Free memory was 76.3MB in the beginning and 74.8MB in the end (delta: 1.5MB). 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 0.1s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.1s. 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 - 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@44e9b1a4=0, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6163b66f=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! [2021-12-14 22:58:09,489 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)