./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 c3fed411 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-tmp.no-commuhash-c3fed41 [2021-12-19 17:02:10,873 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-19 17:02:10,874 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-19 17:02:10,918 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-19 17:02:10,918 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-19 17:02:10,919 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-19 17:02:10,920 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-19 17:02:10,921 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-19 17:02:10,922 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-19 17:02:10,923 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-19 17:02:10,924 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-19 17:02:10,924 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-19 17:02:10,925 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-19 17:02:10,925 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-19 17:02:10,926 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-19 17:02:10,927 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-19 17:02:10,928 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-19 17:02:10,928 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-19 17:02:10,930 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-19 17:02:10,931 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-19 17:02:10,932 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-19 17:02:10,933 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-19 17:02:10,934 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-19 17:02:10,935 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-19 17:02:10,936 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-19 17:02:10,937 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-19 17:02:10,937 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-19 17:02:10,938 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-19 17:02:10,938 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-19 17:02:10,939 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-19 17:02:10,939 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-19 17:02:10,940 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-19 17:02:10,940 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-19 17:02:10,941 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-19 17:02:10,942 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-19 17:02:10,942 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-19 17:02:10,942 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-19 17:02:10,943 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-19 17:02:10,943 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-19 17:02:10,943 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-19 17:02:10,944 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-19 17:02:10,945 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-12-19 17:02:10,960 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-19 17:02:10,960 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-19 17:02:10,961 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-19 17:02:10,961 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-19 17:02:10,962 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-19 17:02:10,962 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-19 17:02:10,962 INFO L138 SettingsManager]: * Use SBE=true [2021-12-19 17:02:10,962 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-19 17:02:10,962 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-19 17:02:10,963 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-19 17:02:10,963 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-19 17:02:10,963 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-19 17:02:10,963 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-19 17:02:10,963 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-19 17:02:10,964 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-19 17:02:10,964 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-19 17:02:10,964 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-19 17:02:10,964 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-19 17:02:10,964 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-19 17:02:10,965 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-19 17:02:10,965 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-19 17:02:10,965 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-19 17:02:10,965 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-19 17:02:10,965 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-19 17:02:10,965 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-19 17:02:10,965 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-19 17:02:10,966 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-19 17:02:10,966 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-19 17:02:10,966 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-19 17:02:10,967 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-19 17:02:10,967 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fde09a60595b1ccfdc4082db9307f665f7d9aa8adcf6aa0f827e624d65c22a35 [2021-12-19 17:02:11,142 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-19 17:02:11,165 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-19 17:02:11,167 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-19 17:02:11,168 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-19 17:02:11,179 INFO L275 PluginConnector]: CDTParser initialized [2021-12-19 17:02:11,180 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/Rotation180-1.c [2021-12-19 17:02:11,238 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5e12d97c/1b82a467566f48cba449565d63959a96/FLAG2c0c9270e [2021-12-19 17:02:11,598 INFO L306 CDTParser]: Found 1 translation units. [2021-12-19 17:02:11,599 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/Rotation180-1.c [2021-12-19 17:02:11,606 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5e12d97c/1b82a467566f48cba449565d63959a96/FLAG2c0c9270e [2021-12-19 17:02:11,619 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5e12d97c/1b82a467566f48cba449565d63959a96 [2021-12-19 17:02:11,621 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-19 17:02:11,623 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-19 17:02:11,625 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-19 17:02:11,625 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-19 17:02:11,627 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-19 17:02:11,628 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 05:02:11" (1/1) ... [2021-12-19 17:02:11,629 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e85e376 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:02:11, skipping insertion in model container [2021-12-19 17:02:11,629 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 05:02:11" (1/1) ... [2021-12-19 17:02:11,633 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-19 17:02:11,642 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-19 17:02:11,784 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-19 17:02:11,786 INFO L203 MainTranslator]: Completed pre-run [2021-12-19 17:02:11,795 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-19 17:02:11,802 INFO L208 MainTranslator]: Completed translation [2021-12-19 17:02:11,803 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:02:11 WrapperNode [2021-12-19 17:02:11,803 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-19 17:02:11,804 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-19 17:02:11,804 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-19 17:02:11,804 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-19 17:02:11,810 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:02:11" (1/1) ... [2021-12-19 17:02:11,813 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:02:11" (1/1) ... [2021-12-19 17:02:11,823 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 24 [2021-12-19 17:02:11,823 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-19 17:02:11,824 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-19 17:02:11,824 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-19 17:02:11,824 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-19 17:02:11,829 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:02:11" (1/1) ... [2021-12-19 17:02:11,829 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:02:11" (1/1) ... [2021-12-19 17:02:11,830 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:02:11" (1/1) ... [2021-12-19 17:02:11,830 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:02:11" (1/1) ... [2021-12-19 17:02:11,831 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:02:11" (1/1) ... [2021-12-19 17:02:11,835 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:02:11" (1/1) ... [2021-12-19 17:02:11,836 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:02:11" (1/1) ... [2021-12-19 17:02:11,837 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-19 17:02:11,838 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-19 17:02:11,838 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-19 17:02:11,838 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-19 17:02:11,839 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:02:11" (1/1) ... [2021-12-19 17:02:11,844 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:02:11,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:02:11,861 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) [2021-12-19 17:02:11,878 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 [2021-12-19 17:02:11,894 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-19 17:02:11,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-19 17:02:11,933 INFO L236 CfgBuilder]: Building ICFG [2021-12-19 17:02:11,934 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-19 17:02:11,993 INFO L277 CfgBuilder]: Performing block encoding [2021-12-19 17:02:11,998 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-19 17:02:11,998 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-19 17:02:11,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 05:02:11 BoogieIcfgContainer [2021-12-19 17:02:12,000 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-19 17:02:12,000 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-19 17:02:12,000 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-19 17:02:12,003 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-19 17:02:12,003 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-19 17:02:12,003 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 19.12 05:02:11" (1/3) ... [2021-12-19 17:02:12,004 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3ae81a50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.12 05:02:12, skipping insertion in model container [2021-12-19 17:02:12,004 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-19 17:02:12,004 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:02:11" (2/3) ... [2021-12-19 17:02:12,005 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3ae81a50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.12 05:02:12, skipping insertion in model container [2021-12-19 17:02:12,005 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-19 17:02:12,005 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 05:02:11" (3/3) ... [2021-12-19 17:02:12,006 INFO L388 chiAutomizerObserver]: Analyzing ICFG Rotation180-1.c [2021-12-19 17:02:12,036 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-19 17:02:12,036 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-19 17:02:12,036 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-19 17:02:12,036 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-19 17:02:12,036 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-19 17:02:12,037 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-19 17:02:12,037 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-19 17:02:12,037 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-19 17:02:12,047 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) [2021-12-19 17:02:12,058 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-12-19 17:02:12,059 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 17:02:12,059 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 17:02:12,063 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-12-19 17:02:12,063 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-12-19 17:02:12,063 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-19 17:02:12,063 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) [2021-12-19 17:02:12,064 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-12-19 17:02:12,064 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 17:02:12,065 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 17:02:12,065 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-12-19 17:02:12,065 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-12-19 17:02:12,070 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 [2021-12-19 17:02:12,070 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 [2021-12-19 17:02:12,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:02:12,076 INFO L85 PathProgramCache]: Analyzing trace with hash 925672, now seen corresponding path program 1 times [2021-12-19 17:02:12,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:02:12,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944273497] [2021-12-19 17:02:12,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:02:12,085 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:02:12,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:02:12,139 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:02:12,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:02:12,151 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:02:12,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:02:12,154 INFO L85 PathProgramCache]: Analyzing trace with hash 52, now seen corresponding path program 1 times [2021-12-19 17:02:12,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:02:12,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523130350] [2021-12-19 17:02:12,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:02:12,154 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:02:12,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:02:12,172 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:02:12,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:02:12,179 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:02:12,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:02:12,180 INFO L85 PathProgramCache]: Analyzing trace with hash 28695853, now seen corresponding path program 1 times [2021-12-19 17:02:12,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:02:12,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743474244] [2021-12-19 17:02:12,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:02:12,181 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:02:12,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:02:12,194 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:02:12,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:02:12,200 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:02:12,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 19.12 05:02:12 BoogieIcfgContainer [2021-12-19 17:02:12,339 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-12-19 17:02:12,339 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-19 17:02:12,339 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-19 17:02:12,339 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-19 17:02:12,340 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 05:02:11" (3/4) ... [2021-12-19 17:02:12,341 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-12-19 17:02:12,369 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-19 17:02:12,369 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-19 17:02:12,372 INFO L158 Benchmark]: Toolchain (without parser) took 747.53ms. Allocated memory was 77.6MB in the beginning and 94.4MB in the end (delta: 16.8MB). Free memory was 46.3MB in the beginning and 69.9MB in the end (delta: -23.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-19 17:02:12,374 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 77.6MB. Free memory was 47.9MB in the beginning and 47.8MB in the end (delta: 27.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-19 17:02:12,375 INFO L158 Benchmark]: CACSL2BoogieTranslator took 178.38ms. Allocated memory was 77.6MB in the beginning and 94.4MB in the end (delta: 16.8MB). Free memory was 46.1MB in the beginning and 73.1MB in the end (delta: -26.9MB). Peak memory consumption was 7.8MB. Max. memory is 16.1GB. [2021-12-19 17:02:12,375 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.11ms. Allocated memory is still 94.4MB. Free memory was 72.7MB in the beginning and 71.7MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-19 17:02:12,375 INFO L158 Benchmark]: Boogie Preprocessor took 13.17ms. Allocated memory is still 94.4MB. Free memory was 71.7MB in the beginning and 70.6MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-19 17:02:12,376 INFO L158 Benchmark]: RCFGBuilder took 161.64ms. Allocated memory is still 94.4MB. Free memory was 70.6MB in the beginning and 62.9MB in the end (delta: 7.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-19 17:02:12,376 INFO L158 Benchmark]: BuchiAutomizer took 338.34ms. Allocated memory is still 94.4MB. Free memory was 62.6MB in the beginning and 71.5MB in the end (delta: -8.8MB). Peak memory consumption was 20.7MB. Max. memory is 16.1GB. [2021-12-19 17:02:12,376 INFO L158 Benchmark]: Witness Printer took 30.63ms. Allocated memory is still 94.4MB. Free memory was 71.5MB in the beginning and 69.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-19 17:02:12,380 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 77.6MB. Free memory was 47.9MB in the beginning and 47.8MB in the end (delta: 27.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 178.38ms. Allocated memory was 77.6MB in the beginning and 94.4MB in the end (delta: 16.8MB). Free memory was 46.1MB in the beginning and 73.1MB in the end (delta: -26.9MB). Peak memory consumption was 7.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 19.11ms. Allocated memory is still 94.4MB. Free memory was 72.7MB in the beginning and 71.7MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 13.17ms. Allocated memory is still 94.4MB. Free memory was 71.7MB in the beginning and 70.6MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 161.64ms. Allocated memory is still 94.4MB. Free memory was 70.6MB in the beginning and 62.9MB in the end (delta: 7.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * BuchiAutomizer took 338.34ms. Allocated memory is still 94.4MB. Free memory was 62.6MB in the beginning and 71.5MB in the end (delta: -8.8MB). Peak memory consumption was 20.7MB. Max. memory is 16.1GB. * Witness Printer took 30.63ms. Allocated memory is still 94.4MB. Free memory was 71.5MB in the beginning and 69.9MB 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 0.2s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.2s. 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@599ffa3b=0, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6797e7d3=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! [2021-12-19 17:02:12,420 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)