./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/ldv-regression/stateful_check.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 20ed64ec 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/ldv-regression/stateful_check.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 a342581b7572d5ebcb4a58d0a914c795d7fcf5cd ................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-27 15:15:50,237 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 15:15:50,240 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 15:15:50,277 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 15:15:50,278 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 15:15:50,281 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 15:15:50,283 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 15:15:50,288 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 15:15:50,290 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 15:15:50,294 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 15:15:50,296 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 15:15:50,299 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 15:15:50,300 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 15:15:50,302 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 15:15:50,304 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 15:15:50,307 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 15:15:50,308 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 15:15:50,309 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 15:15:50,311 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 15:15:50,317 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 15:15:50,318 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 15:15:50,319 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 15:15:50,321 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 15:15:50,322 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 15:15:50,328 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 15:15:50,328 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 15:15:50,329 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 15:15:50,330 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 15:15:50,331 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 15:15:50,331 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 15:15:50,332 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 15:15:50,332 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 15:15:50,334 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 15:15:50,334 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 15:15:50,335 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 15:15:50,336 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 15:15:50,336 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 15:15:50,336 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 15:15:50,337 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 15:15:50,338 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 15:15:50,339 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 15:15:50,342 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-08-27 15:15:50,379 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 15:15:50,379 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 15:15:50,380 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 15:15:50,380 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 15:15:50,382 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 15:15:50,382 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 15:15:50,382 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 15:15:50,383 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-27 15:15:50,383 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-27 15:15:50,383 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-27 15:15:50,384 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-27 15:15:50,384 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-27 15:15:50,384 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-27 15:15:50,384 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 15:15:50,384 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 15:15:50,385 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 15:15:50,385 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 15:15:50,385 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 15:15:50,385 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 15:15:50,397 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-27 15:15:50,398 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-27 15:15:50,398 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-27 15:15:50,398 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 15:15:50,398 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 15:15:50,398 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-27 15:15:50,399 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 15:15:50,399 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-27 15:15:50,399 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 15:15:50,399 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 15:15:50,400 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 15:15:50,400 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 15:15:50,400 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 15:15:50,401 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-27 15:15:50,402 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a342581b7572d5ebcb4a58d0a914c795d7fcf5cd [2021-08-27 15:15:50,726 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 15:15:50,751 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 15:15:50,753 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 15:15:50,754 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 15:15:50,755 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 15:15:50,756 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-regression/stateful_check.c [2021-08-27 15:15:50,825 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/010bc7320/64a7474c2aa5444ba404cda25ec265b8/FLAG0d93dcd36 [2021-08-27 15:15:51,264 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 15:15:51,265 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/stateful_check.c [2021-08-27 15:15:51,271 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/010bc7320/64a7474c2aa5444ba404cda25ec265b8/FLAG0d93dcd36 [2021-08-27 15:15:51,671 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/010bc7320/64a7474c2aa5444ba404cda25ec265b8 [2021-08-27 15:15:51,673 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 15:15:51,674 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 15:15:51,677 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 15:15:51,677 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 15:15:51,680 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 15:15:51,681 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 03:15:51" (1/1) ... [2021-08-27 15:15:51,684 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@527d2fc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:15:51, skipping insertion in model container [2021-08-27 15:15:51,685 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 03:15:51" (1/1) ... [2021-08-27 15:15:51,690 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 15:15:51,708 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 15:15:51,793 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/stateful_check.c[298,311] [2021-08-27 15:15:51,823 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 15:15:51,830 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 15:15:51,838 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/stateful_check.c[298,311] [2021-08-27 15:15:51,844 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 15:15:51,879 INFO L208 MainTranslator]: Completed translation [2021-08-27 15:15:51,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:15:51 WrapperNode [2021-08-27 15:15:51,882 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 15:15:51,883 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 15:15:51,883 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 15:15:51,883 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 15:15:51,889 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:15:51" (1/1) ... [2021-08-27 15:15:51,895 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:15:51" (1/1) ... [2021-08-27 15:15:51,923 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 15:15:51,925 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 15:15:51,925 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 15:15:51,925 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 15:15:51,931 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:15:51" (1/1) ... [2021-08-27 15:15:51,932 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:15:51" (1/1) ... [2021-08-27 15:15:51,943 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:15:51" (1/1) ... [2021-08-27 15:15:51,944 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:15:51" (1/1) ... [2021-08-27 15:15:51,947 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:15:51" (1/1) ... [2021-08-27 15:15:51,954 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:15:51" (1/1) ... [2021-08-27 15:15:51,964 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:15:51" (1/1) ... [2021-08-27 15:15:51,970 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 15:15:51,971 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 15:15:51,972 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 15:15:51,972 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 15:15:51,981 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:15:51" (1/1) ... [2021-08-27 15:15:51,987 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:15:51,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:15:52,003 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) [2021-08-27 15:15:52,008 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 [2021-08-27 15:15:52,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 15:15:52,057 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 15:15:52,057 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 15:15:52,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 15:15:52,366 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 15:15:52,366 INFO L299 CfgBuilder]: Removed 35 assume(true) statements. [2021-08-27 15:15:52,367 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 03:15:52 BoogieIcfgContainer [2021-08-27 15:15:52,367 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 15:15:52,368 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-27 15:15:52,368 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-27 15:15:52,371 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-27 15:15:52,371 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 15:15:52,382 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.08 03:15:51" (1/3) ... [2021-08-27 15:15:52,383 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@336155e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 03:15:52, skipping insertion in model container [2021-08-27 15:15:52,383 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 15:15:52,383 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:15:51" (2/3) ... [2021-08-27 15:15:52,384 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@336155e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 03:15:52, skipping insertion in model container [2021-08-27 15:15:52,384 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 15:15:52,384 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 03:15:52" (3/3) ... [2021-08-27 15:15:52,385 INFO L389 chiAutomizerObserver]: Analyzing ICFG stateful_check.c [2021-08-27 15:15:52,419 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-27 15:15:52,420 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-27 15:15:52,420 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-27 15:15:52,420 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-27 15:15:52,420 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-27 15:15:52,420 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-27 15:15:52,420 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-27 15:15:52,420 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-27 15:15:52,432 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 40 states, 39 states have (on average 1.4615384615384615) internal successors, (57), 39 states have internal predecessors, (57), 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) [2021-08-27 15:15:52,447 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 31 [2021-08-27 15:15:52,448 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 15:15:52,448 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 15:15:52,453 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-08-27 15:15:52,454 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-08-27 15:15:52,454 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-27 15:15:52,454 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 40 states, 39 states have (on average 1.4615384615384615) internal successors, (57), 39 states have internal predecessors, (57), 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) [2021-08-27 15:15:52,457 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 31 [2021-08-27 15:15:52,457 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 15:15:52,457 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 15:15:52,457 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-08-27 15:15:52,458 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-08-27 15:15:52,463 INFO L791 eck$LassoCheckResult]: Stem: 23#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(17);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);~ldv_mutex~0 := 1;~open_called~0 := 0; 12#L-1true havoc main_#res;havoc main_#t~ret8, main_#t~nondet10, main_#t~switch11, main_#t~ret12, main_#t~post13, main_#t~ret14, main_#t~post15, main_#t~ret16, main_#t~post17, main_#t~ret18, main_#t~nondet9, main_~ldv_s_misc_fops_file_operations~0;main_~ldv_s_misc_fops_file_operations~0 := 0;havoc my_init_#res;~open_called~0 := 0;my_init_#res := 0; 40#L72true main_#t~ret8 := my_init_#res;havoc main_#t~ret8; 19#L78-2true [2021-08-27 15:15:52,463 INFO L793 eck$LassoCheckResult]: Loop: 19#L78-2true assume !!(0 != main_#t~nondet9);havoc main_#t~nondet9;main_#t~switch11 := 0 == main_#t~nondet10; 28#L82true assume main_#t~switch11; 29#L83true assume !(0 == main_~ldv_s_misc_fops_file_operations~0); 16#L80true havoc main_#t~nondet10;havoc main_#t~switch11; 19#L78-2true [2021-08-27 15:15:52,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:15:52,468 INFO L82 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2021-08-27 15:15:52,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:15:52,476 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813958843] [2021-08-27 15:15:52,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:15:52,477 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:15:52,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:15:52,568 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:15:52,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:15:52,617 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:15:52,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:15:52,627 INFO L82 PathProgramCache]: Analyzing trace with hash 1327177, now seen corresponding path program 1 times [2021-08-27 15:15:52,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:15:52,628 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278952388] [2021-08-27 15:15:52,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:15:52,629 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:15:52,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:15:52,640 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:15:52,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:15:52,651 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:15:52,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:15:52,652 INFO L82 PathProgramCache]: Analyzing trace with hash 1804166377, now seen corresponding path program 1 times [2021-08-27 15:15:52,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:15:52,653 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884051166] [2021-08-27 15:15:52,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:15:52,653 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:15:52,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 15:15:52,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 15:15:52,727 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 15:15:52,729 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884051166] [2021-08-27 15:15:52,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884051166] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 15:15:52,730 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 15:15:52,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 15:15:52,730 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659432365] [2021-08-27 15:15:52,831 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 15:15:52,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 15:15:52,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 15:15:52,847 INFO L87 Difference]: Start difference. First operand has 40 states, 39 states have (on average 1.4615384615384615) internal successors, (57), 39 states have internal predecessors, (57), 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) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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) [2021-08-27 15:15:52,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 15:15:52,903 INFO L93 Difference]: Finished difference Result 57 states and 73 transitions. [2021-08-27 15:15:52,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 15:15:52,905 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 57 states and 73 transitions. [2021-08-27 15:15:52,915 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 38 [2021-08-27 15:15:52,918 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 57 states to 41 states and 57 transitions. [2021-08-27 15:15:52,919 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 41 [2021-08-27 15:15:52,919 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 41 [2021-08-27 15:15:52,920 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 57 transitions. [2021-08-27 15:15:52,920 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 15:15:52,920 INFO L681 BuchiCegarLoop]: Abstraction has 41 states and 57 transitions. [2021-08-27 15:15:52,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states and 57 transitions. [2021-08-27 15:15:52,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2021-08-27 15:15:52,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 41 states have (on average 1.3902439024390243) internal successors, (57), 40 states have internal predecessors, (57), 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) [2021-08-27 15:15:52,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 57 transitions. [2021-08-27 15:15:52,949 INFO L704 BuchiCegarLoop]: Abstraction has 41 states and 57 transitions. [2021-08-27 15:15:52,950 INFO L587 BuchiCegarLoop]: Abstraction has 41 states and 57 transitions. [2021-08-27 15:15:52,950 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-27 15:15:52,950 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 41 states and 57 transitions. [2021-08-27 15:15:52,952 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 38 [2021-08-27 15:15:52,953 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 15:15:52,953 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 15:15:52,953 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-08-27 15:15:52,953 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2021-08-27 15:15:52,953 INFO L791 eck$LassoCheckResult]: Stem: 132#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(17);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);~ldv_mutex~0 := 1;~open_called~0 := 0; 122#L-1 havoc main_#res;havoc main_#t~ret8, main_#t~nondet10, main_#t~switch11, main_#t~ret12, main_#t~post13, main_#t~ret14, main_#t~post15, main_#t~ret16, main_#t~post17, main_#t~ret18, main_#t~nondet9, main_~ldv_s_misc_fops_file_operations~0;main_~ldv_s_misc_fops_file_operations~0 := 0;havoc my_init_#res;~open_called~0 := 0;my_init_#res := 0; 123#L72 main_#t~ret8 := my_init_#res;havoc main_#t~ret8; 142#L78-2 [2021-08-27 15:15:52,954 INFO L793 eck$LassoCheckResult]: Loop: 142#L78-2 assume !!(0 != main_#t~nondet9);havoc main_#t~nondet9;main_#t~switch11 := 0 == main_#t~nondet10; 136#L82 assume !main_#t~switch11;main_#t~switch11 := main_#t~switch11 || 1 == main_#t~nondet10; 134#L90 assume main_#t~switch11; 135#L91 assume !(1 == main_~ldv_s_misc_fops_file_operations~0); 124#L80 havoc main_#t~nondet10;havoc main_#t~switch11; 142#L78-2 [2021-08-27 15:15:52,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:15:52,954 INFO L82 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 2 times [2021-08-27 15:15:52,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:15:52,954 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716533603] [2021-08-27 15:15:52,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:15:52,955 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:15:52,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:15:52,964 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:15:52,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:15:52,975 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:15:52,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:15:52,975 INFO L82 PathProgramCache]: Analyzing trace with hash 41592519, now seen corresponding path program 1 times [2021-08-27 15:15:52,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:15:52,976 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491660620] [2021-08-27 15:15:52,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:15:52,976 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:15:52,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:15:52,980 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:15:52,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:15:52,984 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:15:52,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:15:52,985 INFO L82 PathProgramCache]: Analyzing trace with hash 95032871, now seen corresponding path program 1 times [2021-08-27 15:15:52,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:15:52,985 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063489063] [2021-08-27 15:15:52,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:15:52,985 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:15:52,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:15:52,994 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:15:53,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:15:53,005 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:15:53,504 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.08 03:15:53 BoogieIcfgContainer [2021-08-27 15:15:53,504 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-08-27 15:15:53,505 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 15:15:53,505 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 15:15:53,505 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 15:15:53,505 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 03:15:52" (3/4) ... [2021-08-27 15:15:53,507 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-08-27 15:15:53,532 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 15:15:53,532 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 15:15:53,534 INFO L168 Benchmark]: Toolchain (without parser) took 1858.95 ms. Allocated memory was 54.5 MB in the beginning and 88.1 MB in the end (delta: 33.6 MB). Free memory was 33.3 MB in the beginning and 49.2 MB in the end (delta: -15.8 MB). Peak memory consumption was 16.7 MB. Max. memory is 16.1 GB. [2021-08-27 15:15:53,534 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 54.5 MB. Free memory was 36.5 MB in the beginning and 36.5 MB in the end (delta: 44.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 15:15:53,535 INFO L168 Benchmark]: CACSL2BoogieTranslator took 205.41 ms. Allocated memory was 54.5 MB in the beginning and 73.4 MB in the end (delta: 18.9 MB). Free memory was 33.1 MB in the beginning and 57.2 MB in the end (delta: -24.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 16.1 GB. [2021-08-27 15:15:53,535 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.58 ms. Allocated memory is still 73.4 MB. Free memory was 57.0 MB in the beginning and 55.5 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 15:15:53,535 INFO L168 Benchmark]: Boogie Preprocessor took 46.10 ms. Allocated memory is still 73.4 MB. Free memory was 55.5 MB in the beginning and 54.2 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 15:15:53,536 INFO L168 Benchmark]: RCFGBuilder took 396.24 ms. Allocated memory is still 73.4 MB. Free memory was 54.2 MB in the beginning and 37.4 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-08-27 15:15:53,536 INFO L168 Benchmark]: BuchiAutomizer took 1136.04 ms. Allocated memory was 73.4 MB in the beginning and 88.1 MB in the end (delta: 14.7 MB). Free memory was 37.2 MB in the beginning and 50.9 MB in the end (delta: -13.7 MB). Peak memory consumption was 15.6 MB. Max. memory is 16.1 GB. [2021-08-27 15:15:53,537 INFO L168 Benchmark]: Witness Printer took 27.63 ms. Allocated memory is still 88.1 MB. Free memory was 50.3 MB in the beginning and 49.2 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 15:15:53,539 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 54.5 MB. Free memory was 36.5 MB in the beginning and 36.5 MB in the end (delta: 44.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 205.41 ms. Allocated memory was 54.5 MB in the beginning and 73.4 MB in the end (delta: 18.9 MB). Free memory was 33.1 MB in the beginning and 57.2 MB in the end (delta: -24.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 40.58 ms. Allocated memory is still 73.4 MB. Free memory was 57.0 MB in the beginning and 55.5 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 46.10 ms. Allocated memory is still 73.4 MB. Free memory was 55.5 MB in the beginning and 54.2 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 396.24 ms. Allocated memory is still 73.4 MB. Free memory was 54.2 MB in the beginning and 37.4 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 1136.04 ms. Allocated memory was 73.4 MB in the beginning and 88.1 MB in the end (delta: 14.7 MB). Free memory was 37.2 MB in the beginning and 50.9 MB in the end (delta: -13.7 MB). Peak memory consumption was 15.6 MB. Max. memory is 16.1 GB. * Witness Printer took 27.63 ms. Allocated memory is still 88.1 MB. Free memory was 50.3 MB in the beginning and 49.2 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 1 terminating modules (1 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.1 modules have a trivial ranking function, the largest among these consists of 3 locations. The remainder module has 41 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.0s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 0.9s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 1. Minimization of nondet autom 0. Automata minimization 17.4ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 41 states and ocurred in iteration 1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 46 SDtfs, 22 SDslu, 35 SDs, 0 SdLazy, 15 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 24.6ms Time LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc1 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: 78]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=6389} State at position 1 is {\result=0, NULL=6390, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6bdf740f=0, NULL=0, \result=0, NULL=6389, ldv_mutex=1, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@22bb3a21=11, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2b2980e4=1, open_called=0, NULL=6391, ldv_s_misc_fops_file_operations=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6b60e166=0, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1b38131c=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@45b51717=0, NULL=6392, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@566c2435=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@22cf9a88=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@ef8b800=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@17e9ea14=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 78]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L11] int ldv_mutex = 1; [L13] int open_called = 0; [L76] int ldv_s_misc_fops_file_operations = 0; [L71] open_called = 0 [L72] return 0; Loop: [L78] COND TRUE __VERIFIER_nondet_int() [L82] case 0: [L90] case 1: [L91] COND FALSE !(ldv_s_misc_fops_file_operations==1) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-08-27 15:15:53,584 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...