./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/loops/while_infinite_loop_2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- 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/loops/while_infinite_loop_2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2285a0532f76c71ed3da856eea9f62f11be9df4ff1d205bf57c17e8ec94f6df8 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-19 18:34:59,495 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-19 18:34:59,496 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-19 18:34:59,527 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-19 18:34:59,527 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-19 18:34:59,528 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-19 18:34:59,530 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-19 18:34:59,531 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-19 18:34:59,533 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-19 18:34:59,534 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-19 18:34:59,535 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-19 18:34:59,536 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-19 18:34:59,536 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-19 18:34:59,537 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-19 18:34:59,538 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-19 18:34:59,540 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-19 18:34:59,540 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-19 18:34:59,541 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-19 18:34:59,543 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-19 18:34:59,544 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-19 18:34:59,545 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-19 18:34:59,548 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-19 18:34:59,549 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-19 18:34:59,550 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-19 18:34:59,552 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-19 18:34:59,552 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-19 18:34:59,553 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-19 18:34:59,553 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-19 18:34:59,554 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-19 18:34:59,555 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-19 18:34:59,555 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-19 18:34:59,556 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-19 18:34:59,556 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-19 18:34:59,557 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-19 18:34:59,558 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-19 18:34:59,558 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-19 18:34:59,559 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-19 18:34:59,559 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-19 18:34:59,559 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-19 18:34:59,560 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-19 18:34:59,561 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-19 18:34:59,562 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-12-19 18:34:59,593 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-19 18:34:59,594 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-19 18:34:59,595 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-19 18:34:59,595 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-19 18:34:59,597 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-19 18:34:59,597 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-19 18:34:59,597 INFO L138 SettingsManager]: * Use SBE=true [2021-12-19 18:34:59,597 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-19 18:34:59,598 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-19 18:34:59,598 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-19 18:34:59,598 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-19 18:34:59,599 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-19 18:34:59,599 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-19 18:34:59,599 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-19 18:34:59,599 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-19 18:34:59,599 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-19 18:34:59,600 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-19 18:34:59,600 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-19 18:34:59,600 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-19 18:34:59,600 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-19 18:34:59,600 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-19 18:34:59,601 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-19 18:34:59,601 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-19 18:34:59,601 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-19 18:34:59,601 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-19 18:34:59,601 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-19 18:34:59,602 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-19 18:34:59,602 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-19 18:34:59,602 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-19 18:34:59,602 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-19 18:34:59,602 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-19 18:34:59,603 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-19 18:34:59,603 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-19 18:34:59,604 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2285a0532f76c71ed3da856eea9f62f11be9df4ff1d205bf57c17e8ec94f6df8 [2021-12-19 18:34:59,807 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-19 18:34:59,825 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-19 18:34:59,827 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-19 18:34:59,828 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-19 18:34:59,828 INFO L275 PluginConnector]: CDTParser initialized [2021-12-19 18:34:59,829 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/while_infinite_loop_2.c [2021-12-19 18:34:59,892 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fec3d0bb7/e80440bf212c4efe92ccc91a658d958b/FLAGdf3c38cf2 [2021-12-19 18:35:00,236 INFO L306 CDTParser]: Found 1 translation units. [2021-12-19 18:35:00,237 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/while_infinite_loop_2.c [2021-12-19 18:35:00,240 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fec3d0bb7/e80440bf212c4efe92ccc91a658d958b/FLAGdf3c38cf2 [2021-12-19 18:35:00,253 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fec3d0bb7/e80440bf212c4efe92ccc91a658d958b [2021-12-19 18:35:00,255 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-19 18:35:00,256 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-19 18:35:00,259 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-19 18:35:00,260 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-19 18:35:00,262 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-19 18:35:00,263 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 06:35:00" (1/1) ... [2021-12-19 18:35:00,264 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1abbc34e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:35:00, skipping insertion in model container [2021-12-19 18:35:00,264 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 06:35:00" (1/1) ... [2021-12-19 18:35:00,269 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-19 18:35:00,282 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-19 18:35:00,382 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/while_infinite_loop_2.c[333,346] [2021-12-19 18:35:00,386 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-19 18:35:00,395 INFO L203 MainTranslator]: Completed pre-run [2021-12-19 18:35:00,413 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/while_infinite_loop_2.c[333,346] [2021-12-19 18:35:00,418 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-19 18:35:00,427 INFO L208 MainTranslator]: Completed translation [2021-12-19 18:35:00,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:35:00 WrapperNode [2021-12-19 18:35:00,428 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-19 18:35:00,429 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-19 18:35:00,429 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-19 18:35:00,429 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-19 18:35:00,436 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:35:00" (1/1) ... [2021-12-19 18:35:00,441 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:35:00" (1/1) ... [2021-12-19 18:35:00,463 INFO L137 Inliner]: procedures = 12, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 29 [2021-12-19 18:35:00,463 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-19 18:35:00,464 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-19 18:35:00,464 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-19 18:35:00,464 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-19 18:35:00,470 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:35:00" (1/1) ... [2021-12-19 18:35:00,471 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:35:00" (1/1) ... [2021-12-19 18:35:00,471 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:35:00" (1/1) ... [2021-12-19 18:35:00,472 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:35:00" (1/1) ... [2021-12-19 18:35:00,473 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:35:00" (1/1) ... [2021-12-19 18:35:00,476 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:35:00" (1/1) ... [2021-12-19 18:35:00,476 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:35:00" (1/1) ... [2021-12-19 18:35:00,477 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-19 18:35:00,478 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-19 18:35:00,478 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-19 18:35:00,478 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-19 18:35:00,479 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:35:00" (1/1) ... [2021-12-19 18:35:00,486 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 18:35:00,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 18:35:00,512 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 18:35:00,530 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 18:35:00,556 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-19 18:35:00,556 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-19 18:35:00,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-19 18:35:00,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-19 18:35:00,607 INFO L236 CfgBuilder]: Building ICFG [2021-12-19 18:35:00,609 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-19 18:35:00,681 INFO L277 CfgBuilder]: Performing block encoding [2021-12-19 18:35:00,685 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-19 18:35:00,685 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-19 18:35:00,687 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 06:35:00 BoogieIcfgContainer [2021-12-19 18:35:00,687 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-19 18:35:00,688 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-19 18:35:00,689 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-19 18:35:00,692 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-19 18:35:00,692 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-19 18:35:00,692 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 19.12 06:35:00" (1/3) ... [2021-12-19 18:35:00,693 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@17a877dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.12 06:35:00, skipping insertion in model container [2021-12-19 18:35:00,694 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-19 18:35:00,694 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:35:00" (2/3) ... [2021-12-19 18:35:00,694 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@17a877dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.12 06:35:00, skipping insertion in model container [2021-12-19 18:35:00,694 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-19 18:35:00,694 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 06:35:00" (3/3) ... [2021-12-19 18:35:00,696 INFO L388 chiAutomizerObserver]: Analyzing ICFG while_infinite_loop_2.c [2021-12-19 18:35:00,738 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-19 18:35:00,738 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-19 18:35:00,738 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-19 18:35:00,738 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-19 18:35:00,738 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-19 18:35:00,738 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-19 18:35:00,739 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-19 18:35:00,739 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-19 18:35:00,752 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 13 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 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 18:35:00,764 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-12-19 18:35:00,764 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 18:35:00,764 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 18:35:00,769 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-19 18:35:00,769 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-19 18:35:00,769 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-19 18:35:00,769 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 13 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 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 18:35:00,770 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-12-19 18:35:00,771 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 18:35:00,771 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 18:35:00,771 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-19 18:35:00,771 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-19 18:35:00,776 INFO L791 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(24, 2);call #Ultimate.allocInit(12, 3); 6#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_~x~0#1;main_~x~0#1 := 0; 14#L14-2true [2021-12-19 18:35:00,777 INFO L793 eck$LassoCheckResult]: Loop: 14#L14-2true assume !false;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if 0 == main_~x~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 11#L6true assume !(0 == __VERIFIER_assert_~cond#1); 5#L6-2true assume { :end_inline___VERIFIER_assert } true; 14#L14-2true [2021-12-19 18:35:00,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 18:35:00,781 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-12-19 18:35:00,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 18:35:00,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654677604] [2021-12-19 18:35:00,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 18:35:00,789 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 18:35:00,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 18:35:00,858 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 18:35:00,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 18:35:00,909 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 18:35:00,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 18:35:00,912 INFO L85 PathProgramCache]: Analyzing trace with hash 40941, now seen corresponding path program 1 times [2021-12-19 18:35:00,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 18:35:00,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125793625] [2021-12-19 18:35:00,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 18:35:00,914 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 18:35:00,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 18:35:00,928 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 18:35:00,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 18:35:00,939 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 18:35:00,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 18:35:00,941 INFO L85 PathProgramCache]: Analyzing trace with hash 28699883, now seen corresponding path program 1 times [2021-12-19 18:35:00,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 18:35:00,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101694561] [2021-12-19 18:35:00,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 18:35:00,942 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 18:35:00,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 18:35:00,961 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 18:35:00,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 18:35:01,003 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 18:35:01,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 19.12 06:35:01 BoogieIcfgContainer [2021-12-19 18:35:01,201 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-12-19 18:35:01,202 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-19 18:35:01,202 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-19 18:35:01,202 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-19 18:35:01,202 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 06:35:00" (3/4) ... [2021-12-19 18:35:01,204 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-12-19 18:35:01,226 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-19 18:35:01,227 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-19 18:35:01,228 INFO L158 Benchmark]: Toolchain (without parser) took 971.81ms. Allocated memory was 83.9MB in the beginning and 100.7MB in the end (delta: 16.8MB). Free memory was 54.3MB in the beginning and 67.9MB in the end (delta: -13.6MB). Peak memory consumption was 1.4MB. Max. memory is 16.1GB. [2021-12-19 18:35:01,229 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 83.9MB. Free memory is still 40.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-19 18:35:01,229 INFO L158 Benchmark]: CACSL2BoogieTranslator took 168.90ms. Allocated memory was 83.9MB in the beginning and 100.7MB in the end (delta: 16.8MB). Free memory was 54.0MB in the beginning and 77.6MB in the end (delta: -23.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-19 18:35:01,230 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.25ms. Allocated memory is still 100.7MB. Free memory was 77.6MB in the beginning and 76.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-19 18:35:01,230 INFO L158 Benchmark]: Boogie Preprocessor took 13.55ms. Allocated memory is still 100.7MB. Free memory was 76.3MB in the beginning and 75.2MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-19 18:35:01,231 INFO L158 Benchmark]: RCFGBuilder took 209.06ms. Allocated memory is still 100.7MB. Free memory was 75.2MB in the beginning and 67.2MB in the end (delta: 8.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-19 18:35:01,231 INFO L158 Benchmark]: BuchiAutomizer took 513.21ms. Allocated memory is still 100.7MB. Free memory was 67.2MB in the beginning and 69.4MB in the end (delta: -2.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-19 18:35:01,232 INFO L158 Benchmark]: Witness Printer took 25.35ms. Allocated memory is still 100.7MB. Free memory was 68.9MB in the beginning and 67.9MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-19 18:35:01,234 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38ms. Allocated memory is still 83.9MB. Free memory is still 40.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 168.90ms. Allocated memory was 83.9MB in the beginning and 100.7MB in the end (delta: 16.8MB). Free memory was 54.0MB in the beginning and 77.6MB in the end (delta: -23.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.25ms. Allocated memory is still 100.7MB. Free memory was 77.6MB in the beginning and 76.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 13.55ms. Allocated memory is still 100.7MB. Free memory was 76.3MB in the beginning and 75.2MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 209.06ms. Allocated memory is still 100.7MB. Free memory was 75.2MB in the beginning and 67.2MB in the end (delta: 8.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 513.21ms. Allocated memory is still 100.7MB. Free memory was 67.2MB in the beginning and 69.4MB in the end (delta: -2.2MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 25.35ms. Allocated memory is still 100.7MB. Free memory was 68.9MB in the beginning and 67.9MB in the end (delta: 1.1MB). 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 0.4s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.4s. 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: 1]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=1} State at position 1 is {x=0, NULL=0, NULL=0, \old(cond)=1, NULL=1, \result=0, cond=1} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 14]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L12] int x=0; Loop: [L14] COND TRUE 1 [L16] CALL __VERIFIER_assert(x==0) [L6] COND FALSE !(!(cond)) [L16] RET __VERIFIER_assert(x==0) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-12-19 18:35:01,271 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)