./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 9a8b2e8d 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_1.3.100.v20150511-1540.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 0.1.25-9a8b2e8 [2020-10-20 07:02:22,059 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 07:02:22,061 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 07:02:22,085 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 07:02:22,085 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 07:02:22,086 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 07:02:22,091 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 07:02:22,092 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 07:02:22,094 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 07:02:22,095 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 07:02:22,098 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 07:02:22,099 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 07:02:22,099 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 07:02:22,100 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 07:02:22,101 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 07:02:22,102 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 07:02:22,103 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 07:02:22,104 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 07:02:22,105 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 07:02:22,107 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 07:02:22,108 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 07:02:22,109 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 07:02:22,110 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 07:02:22,110 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 07:02:22,113 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 07:02:22,113 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 07:02:22,113 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 07:02:22,114 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 07:02:22,114 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 07:02:22,115 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 07:02:22,115 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 07:02:22,116 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 07:02:22,117 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 07:02:22,117 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 07:02:22,118 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 07:02:22,119 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 07:02:22,119 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 07:02:22,119 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 07:02:22,120 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 07:02:22,120 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 07:02:22,121 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 07:02:22,122 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-10-20 07:02:22,154 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 07:02:22,154 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 07:02:22,155 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 07:02:22,156 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 07:02:22,156 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 07:02:22,156 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-20 07:02:22,156 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-20 07:02:22,156 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-20 07:02:22,157 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-20 07:02:22,157 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-20 07:02:22,157 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-20 07:02:22,157 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 07:02:22,157 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 07:02:22,157 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 07:02:22,158 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 07:02:22,158 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 07:02:22,158 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 07:02:22,158 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-20 07:02:22,158 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-20 07:02:22,159 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-20 07:02:22,159 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 07:02:22,159 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 07:02:22,159 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-20 07:02:22,159 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 07:02:22,159 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-20 07:02:22,160 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 07:02:22,160 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 07:02:22,160 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-20 07:02:22,160 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 07:02:22,160 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 07:02:22,161 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 07:02:22,161 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-20 07:02:22,162 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-20 07:02:22,162 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR 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 [2020-10-20 07:02:22,353 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 07:02:22,365 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 07:02:22,369 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 07:02:22,371 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 07:02:22,371 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 07:02:22,373 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-regression/stateful_check.c [2020-10-20 07:02:22,430 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ac3a5224/7d01b4dbea734b619d7999d13a49e89d/FLAG1813c6cf5 [2020-10-20 07:02:22,931 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 07:02:22,932 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/stateful_check.c [2020-10-20 07:02:22,945 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ac3a5224/7d01b4dbea734b619d7999d13a49e89d/FLAG1813c6cf5 [2020-10-20 07:02:23,262 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ac3a5224/7d01b4dbea734b619d7999d13a49e89d [2020-10-20 07:02:23,266 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 07:02:23,272 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 07:02:23,273 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 07:02:23,273 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 07:02:23,276 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 07:02:23,277 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 07:02:23" (1/1) ... [2020-10-20 07:02:23,280 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43495748 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:02:23, skipping insertion in model container [2020-10-20 07:02:23,280 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 07:02:23" (1/1) ... [2020-10-20 07:02:23,289 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 07:02:23,313 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 07:02:23,498 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 07:02:23,509 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 07:02:23,531 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 07:02:23,549 INFO L208 MainTranslator]: Completed translation [2020-10-20 07:02:23,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:02:23 WrapperNode [2020-10-20 07:02:23,550 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 07:02:23,561 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 07:02:23,561 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 07:02:23,561 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 07:02:23,568 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:02:23" (1/1) ... [2020-10-20 07:02:23,579 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:02:23" (1/1) ... [2020-10-20 07:02:23,610 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 07:02:23,610 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 07:02:23,610 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 07:02:23,611 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 07:02:23,619 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:02:23" (1/1) ... [2020-10-20 07:02:23,619 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:02:23" (1/1) ... [2020-10-20 07:02:23,621 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:02:23" (1/1) ... [2020-10-20 07:02:23,621 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:02:23" (1/1) ... [2020-10-20 07:02:23,626 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:02:23" (1/1) ... [2020-10-20 07:02:23,632 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:02:23" (1/1) ... [2020-10-20 07:02:23,633 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:02:23" (1/1) ... [2020-10-20 07:02:23,636 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 07:02:23,637 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 07:02:23,637 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 07:02:23,637 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 07:02:23,638 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:02:23" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:02:23,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 07:02:23,703 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 07:02:23,704 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 07:02:23,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 07:02:23,970 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 07:02:23,971 INFO L298 CfgBuilder]: Removed 45 assume(true) statements. [2020-10-20 07:02:23,972 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 07:02:23 BoogieIcfgContainer [2020-10-20 07:02:23,972 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 07:02:23,973 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-20 07:02:23,973 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-20 07:02:23,976 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-20 07:02:23,977 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 07:02:23,977 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.10 07:02:23" (1/3) ... [2020-10-20 07:02:23,978 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5cf41c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.10 07:02:23, skipping insertion in model container [2020-10-20 07:02:23,979 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 07:02:23,979 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:02:23" (2/3) ... [2020-10-20 07:02:23,979 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5cf41c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.10 07:02:23, skipping insertion in model container [2020-10-20 07:02:23,979 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 07:02:23,979 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 07:02:23" (3/3) ... [2020-10-20 07:02:23,981 INFO L373 chiAutomizerObserver]: Analyzing ICFG stateful_check.c [2020-10-20 07:02:24,047 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-20 07:02:24,047 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-20 07:02:24,048 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-20 07:02:24,048 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 07:02:24,048 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 07:02:24,048 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-20 07:02:24,048 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 07:02:24,048 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-20 07:02:24,073 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 45 states. [2020-10-20 07:02:24,099 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 35 [2020-10-20 07:02:24,099 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 07:02:24,099 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 07:02:24,107 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-10-20 07:02:24,108 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-10-20 07:02:24,108 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-10-20 07:02:24,108 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 45 states. [2020-10-20 07:02:24,112 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 35 [2020-10-20 07:02:24,112 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 07:02:24,113 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 07:02:24,113 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-10-20 07:02:24,113 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-10-20 07:02:24,122 INFO L794 eck$LassoCheckResult]: Stem: 40#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(17);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);~ldv_mutex~0 := 1;~open_called~0 := 0; 11#L-1true havoc main_#res;havoc main_#t~ret8, main_#t~nondet10, main_#t~switch11, main_#t~ret12, main_#t~post13, main_#t~ret14, main_#t~post15, main_#t~ret16, main_#t~post17, main_#t~ret18, main_#t~nondet9, main_~ldv_s_misc_fops_file_operations~0;main_~ldv_s_misc_fops_file_operations~0 := 0;havoc my_init_#res;~open_called~0 := 0;my_init_#res := 0; 37#L72true main_#t~ret8 := my_init_#res;havoc main_#t~ret8; 20#L78-2true [2020-10-20 07:02:24,123 INFO L796 eck$LassoCheckResult]: Loop: 20#L78-2true assume !!(0 != main_#t~nondet9);havoc main_#t~nondet9;main_#t~switch11 := 0 == main_#t~nondet10; 9#L82true assume main_#t~switch11; 38#L83true assume !(0 == main_~ldv_s_misc_fops_file_operations~0); 5#L80true havoc main_#t~nondet10;havoc main_#t~switch11; 20#L78-2true [2020-10-20 07:02:24,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 07:02:24,129 INFO L82 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2020-10-20 07:02:24,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 07:02:24,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897581726] [2020-10-20 07:02:24,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 07:02:24,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:02:24,240 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:02:24,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:02:24,259 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:02:24,294 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 07:02:24,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 07:02:24,295 INFO L82 PathProgramCache]: Analyzing trace with hash 1327185, now seen corresponding path program 1 times [2020-10-20 07:02:24,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 07:02:24,296 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480006110] [2020-10-20 07:02:24,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 07:02:24,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:02:24,302 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:02:24,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:02:24,305 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:02:24,308 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 07:02:24,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 07:02:24,310 INFO L82 PathProgramCache]: Analyzing trace with hash 1804166385, now seen corresponding path program 1 times [2020-10-20 07:02:24,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 07:02:24,310 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434081115] [2020-10-20 07:02:24,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 07:02:24,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 07:02:24,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 07:02:24,387 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434081115] [2020-10-20 07:02:24,388 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 07:02:24,388 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 07:02:24,389 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731086522] [2020-10-20 07:02:24,464 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 07:02:24,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 07:02:24,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 07:02:24,482 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 3 states. [2020-10-20 07:02:24,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 07:02:24,545 INFO L93 Difference]: Finished difference Result 57 states and 73 transitions. [2020-10-20 07:02:24,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 07:02:24,548 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 57 states and 73 transitions. [2020-10-20 07:02:24,552 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 38 [2020-10-20 07:02:24,557 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 57 states to 41 states and 57 transitions. [2020-10-20 07:02:24,558 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 41 [2020-10-20 07:02:24,559 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 41 [2020-10-20 07:02:24,560 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 57 transitions. [2020-10-20 07:02:24,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-20 07:02:24,561 INFO L691 BuchiCegarLoop]: Abstraction has 41 states and 57 transitions. [2020-10-20 07:02:24,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states and 57 transitions. [2020-10-20 07:02:24,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-10-20 07:02:24,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-20 07:02:24,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 57 transitions. [2020-10-20 07:02:24,601 INFO L714 BuchiCegarLoop]: Abstraction has 41 states and 57 transitions. [2020-10-20 07:02:24,601 INFO L594 BuchiCegarLoop]: Abstraction has 41 states and 57 transitions. [2020-10-20 07:02:24,601 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-10-20 07:02:24,601 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 41 states and 57 transitions. [2020-10-20 07:02:24,603 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 38 [2020-10-20 07:02:24,603 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 07:02:24,603 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 07:02:24,604 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-10-20 07:02:24,604 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2020-10-20 07:02:24,604 INFO L794 eck$LassoCheckResult]: Stem: 146#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(17);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);~ldv_mutex~0 := 1;~open_called~0 := 0; 127#L-1 havoc main_#res;havoc main_#t~ret8, main_#t~nondet10, main_#t~switch11, main_#t~ret12, main_#t~post13, main_#t~ret14, main_#t~post15, main_#t~ret16, main_#t~post17, main_#t~ret18, main_#t~nondet9, main_~ldv_s_misc_fops_file_operations~0;main_~ldv_s_misc_fops_file_operations~0 := 0;havoc my_init_#res;~open_called~0 := 0;my_init_#res := 0; 128#L72 main_#t~ret8 := my_init_#res;havoc main_#t~ret8; 118#L78-2 [2020-10-20 07:02:24,605 INFO L796 eck$LassoCheckResult]: Loop: 118#L78-2 assume !!(0 != main_#t~nondet9);havoc main_#t~nondet9;main_#t~switch11 := 0 == main_#t~nondet10; 123#L82 assume !main_#t~switch11;main_#t~switch11 := main_#t~switch11 || 1 == main_#t~nondet10; 125#L90 assume main_#t~switch11; 122#L91 assume !(1 == main_~ldv_s_misc_fops_file_operations~0); 117#L80 havoc main_#t~nondet10;havoc main_#t~switch11; 118#L78-2 [2020-10-20 07:02:24,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 07:02:24,605 INFO L82 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 2 times [2020-10-20 07:02:24,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 07:02:24,606 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415951672] [2020-10-20 07:02:24,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 07:02:24,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:02:24,619 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:02:24,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:02:24,644 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:02:24,652 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 07:02:24,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 07:02:24,655 INFO L82 PathProgramCache]: Analyzing trace with hash 41592527, now seen corresponding path program 1 times [2020-10-20 07:02:24,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 07:02:24,655 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597074755] [2020-10-20 07:02:24,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 07:02:24,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:02:24,665 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:02:24,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:02:24,670 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:02:24,677 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 07:02:24,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 07:02:24,678 INFO L82 PathProgramCache]: Analyzing trace with hash 95032879, now seen corresponding path program 1 times [2020-10-20 07:02:24,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 07:02:24,680 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370039194] [2020-10-20 07:02:24,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 07:02:24,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:02:24,709 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:02:24,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:02:24,730 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:02:24,743 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 07:02:25,022 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61 [2020-10-20 07:02:25,143 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch11 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-10-20 07:02:25,157 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.10 07:02:25 BoogieIcfgContainer [2020-10-20 07:02:25,157 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-10-20 07:02:25,157 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 07:02:25,158 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 07:02:25,158 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 07:02:25,158 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 07:02:23" (3/4) ... [2020-10-20 07:02:25,161 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2020-10-20 07:02:25,206 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 07:02:25,206 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 07:02:25,208 INFO L168 Benchmark]: Toolchain (without parser) took 1940.58 ms. Allocated memory was 42.5 MB in the beginning and 50.9 MB in the end (delta: 8.4 MB). Free memory was 24.4 MB in the beginning and 25.5 MB in the end (delta: -1.1 MB). Peak memory consumption was 7.3 MB. Max. memory is 14.3 GB. [2020-10-20 07:02:25,209 INFO L168 Benchmark]: CDTParser took 0.96 ms. Allocated memory is still 33.0 MB. Free memory was 11.6 MB in the beginning and 11.6 MB in the end (delta: 47.4 kB). Peak memory consumption was 47.4 kB. Max. memory is 14.3 GB. [2020-10-20 07:02:25,209 INFO L168 Benchmark]: CACSL2BoogieTranslator took 277.01 ms. Allocated memory is still 42.5 MB. Free memory was 23.4 MB in the beginning and 12.3 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 14.3 GB. [2020-10-20 07:02:25,210 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.53 ms. Allocated memory is still 43.5 MB. Free memory was 26.4 MB in the beginning and 24.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 14.3 GB. [2020-10-20 07:02:25,211 INFO L168 Benchmark]: Boogie Preprocessor took 26.34 ms. Allocated memory is still 43.5 MB. Free memory was 24.5 MB in the beginning and 23.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 14.3 GB. [2020-10-20 07:02:25,212 INFO L168 Benchmark]: RCFGBuilder took 335.28 ms. Allocated memory was 43.5 MB in the beginning and 45.6 MB in the end (delta: 2.1 MB). Free memory was 22.9 MB in the beginning and 23.4 MB in the end (delta: -446.9 kB). Peak memory consumption was 13.0 MB. Max. memory is 14.3 GB. [2020-10-20 07:02:25,212 INFO L168 Benchmark]: BuchiAutomizer took 1184.28 ms. Allocated memory was 45.6 MB in the beginning and 50.9 MB in the end (delta: 5.2 MB). Free memory was 23.1 MB in the beginning and 27.7 MB in the end (delta: -4.6 MB). Peak memory consumption was 15.7 MB. Max. memory is 14.3 GB. [2020-10-20 07:02:25,213 INFO L168 Benchmark]: Witness Printer took 48.61 ms. Allocated memory is still 50.9 MB. Free memory was 27.7 MB in the beginning and 25.5 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 14.3 GB. [2020-10-20 07:02:25,218 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.96 ms. Allocated memory is still 33.0 MB. Free memory was 11.6 MB in the beginning and 11.6 MB in the end (delta: 47.4 kB). Peak memory consumption was 47.4 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 277.01 ms. Allocated memory is still 42.5 MB. Free memory was 23.4 MB in the beginning and 12.3 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 49.53 ms. Allocated memory is still 43.5 MB. Free memory was 26.4 MB in the beginning and 24.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 26.34 ms. Allocated memory is still 43.5 MB. Free memory was 24.5 MB in the beginning and 23.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 14.3 GB. * RCFGBuilder took 335.28 ms. Allocated memory was 43.5 MB in the beginning and 45.6 MB in the end (delta: 2.1 MB). Free memory was 22.9 MB in the beginning and 23.4 MB in the end (delta: -446.9 kB). Peak memory consumption was 13.0 MB. Max. memory is 14.3 GB. * BuchiAutomizer took 1184.28 ms. Allocated memory was 45.6 MB in the beginning and 50.9 MB in the end (delta: 5.2 MB). Free memory was 23.1 MB in the beginning and 27.7 MB in the end (delta: -4.6 MB). Peak memory consumption was 15.7 MB. Max. memory is 14.3 GB. * Witness Printer took 48.61 ms. Allocated memory is still 50.9 MB. Free memory was 27.7 MB in the beginning and 25.5 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch11 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement * 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 1.1s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 0.8s. 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 0.0s 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, 0.0s 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. [2020-10-20 07:02:25,228 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch11 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-10-20 07:02:25,230 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch11 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement Nontermination argument in form of an infinite execution State at position 0 is {NULL=3824} State at position 1 is {\result=0, NULL=3827, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@40ab5e6e=0, NULL=0, \result=0, NULL=3824, ldv_mutex=1, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@547cd0c=11, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@61fe1864=1, open_called=0, NULL=3826, ldv_s_misc_fops_file_operations=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@50c6682a=0, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@22a50d09=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1214eab7=0, NULL=3825, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1ec0b3e5=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@670d6c37=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@10d4cb42=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@295c3df0=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! Received shutdown request...