./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/ldv-regression/stateful_check.c --full-output -ea --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 8bd4bc60 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -ea -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 1225f82562543767c482452e9133e4a69d5dae70 ............................................................................................................................................................................................................................................................................................................................................................................. 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 0.1.25-8bd4bc6 [2020-07-29 02:04:07,971 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-29 02:04:07,974 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-29 02:04:07,990 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-29 02:04:07,991 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-29 02:04:07,992 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-29 02:04:07,994 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-29 02:04:08,004 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-29 02:04:08,009 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-29 02:04:08,012 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-29 02:04:08,014 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-29 02:04:08,015 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-29 02:04:08,015 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-29 02:04:08,018 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-29 02:04:08,019 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-29 02:04:08,020 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-29 02:04:08,021 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-29 02:04:08,022 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-29 02:04:08,025 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-29 02:04:08,028 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-29 02:04:08,033 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-29 02:04:08,036 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-29 02:04:08,037 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-29 02:04:08,038 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-29 02:04:08,041 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-29 02:04:08,041 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-29 02:04:08,041 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-29 02:04:08,042 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-29 02:04:08,043 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-29 02:04:08,044 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-29 02:04:08,044 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-29 02:04:08,045 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-29 02:04:08,046 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-29 02:04:08,046 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-29 02:04:08,048 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-29 02:04:08,048 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-29 02:04:08,048 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-29 02:04:08,049 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-29 02:04:08,049 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-29 02:04:08,050 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-29 02:04:08,051 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-29 02:04:08,051 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-07-29 02:04:08,088 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-29 02:04:08,088 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-29 02:04:08,089 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-29 02:04:08,089 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-29 02:04:08,090 INFO L138 SettingsManager]: * Use SBE=true [2020-07-29 02:04:08,090 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-07-29 02:04:08,090 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-07-29 02:04:08,092 INFO L138 SettingsManager]: * Use old map elimination=false [2020-07-29 02:04:08,092 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-07-29 02:04:08,093 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-07-29 02:04:08,093 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-07-29 02:04:08,093 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-29 02:04:08,093 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-29 02:04:08,094 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-07-29 02:04:08,094 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-29 02:04:08,094 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-29 02:04:08,094 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-29 02:04:08,094 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-07-29 02:04:08,094 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-07-29 02:04:08,095 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-07-29 02:04:08,095 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-29 02:04:08,095 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-29 02:04:08,096 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-07-29 02:04:08,097 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-29 02:04:08,097 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-07-29 02:04:08,097 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-29 02:04:08,097 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-29 02:04:08,097 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-07-29 02:04:08,098 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-29 02:04:08,098 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-29 02:04:08,098 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-29 02:04:08,099 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-07-29 02:04:08,100 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-07-29 02:04:08,101 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 -> 1225f82562543767c482452e9133e4a69d5dae70 [2020-07-29 02:04:08,378 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-29 02:04:08,390 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-29 02:04:08,393 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-29 02:04:08,395 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-29 02:04:08,395 INFO L275 PluginConnector]: CDTParser initialized [2020-07-29 02:04:08,396 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-regression/stateful_check.c [2020-07-29 02:04:08,463 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e2fb1b2c/8a2926bd7da049258ded44f479233efb/FLAG9bde98d7c [2020-07-29 02:04:08,912 INFO L306 CDTParser]: Found 1 translation units. [2020-07-29 02:04:08,913 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/stateful_check.c [2020-07-29 02:04:08,920 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e2fb1b2c/8a2926bd7da049258ded44f479233efb/FLAG9bde98d7c [2020-07-29 02:04:09,260 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e2fb1b2c/8a2926bd7da049258ded44f479233efb [2020-07-29 02:04:09,263 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-29 02:04:09,265 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-07-29 02:04:09,266 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-29 02:04:09,266 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-29 02:04:09,271 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-29 02:04:09,272 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.07 02:04:09" (1/1) ... [2020-07-29 02:04:09,275 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5571a702 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:04:09, skipping insertion in model container [2020-07-29 02:04:09,275 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.07 02:04:09" (1/1) ... [2020-07-29 02:04:09,283 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-29 02:04:09,306 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-29 02:04:09,477 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-29 02:04:09,485 INFO L203 MainTranslator]: Completed pre-run [2020-07-29 02:04:09,507 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-29 02:04:09,523 INFO L208 MainTranslator]: Completed translation [2020-07-29 02:04:09,524 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:04:09 WrapperNode [2020-07-29 02:04:09,524 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-29 02:04:09,525 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-29 02:04:09,525 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-29 02:04:09,525 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-29 02:04:09,532 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:04:09" (1/1) ... [2020-07-29 02:04:09,537 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:04:09" (1/1) ... [2020-07-29 02:04:09,618 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-29 02:04:09,619 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-29 02:04:09,619 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-29 02:04:09,619 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-29 02:04:09,629 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:04:09" (1/1) ... [2020-07-29 02:04:09,629 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:04:09" (1/1) ... [2020-07-29 02:04:09,630 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:04:09" (1/1) ... [2020-07-29 02:04:09,630 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:04:09" (1/1) ... [2020-07-29 02:04:09,636 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:04:09" (1/1) ... [2020-07-29 02:04:09,643 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:04:09" (1/1) ... [2020-07-29 02:04:09,644 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:04:09" (1/1) ... [2020-07-29 02:04:09,646 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-29 02:04:09,647 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-29 02:04:09,647 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-29 02:04:09,647 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-29 02:04:09,648 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:04:09" (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 [2020-07-29 02:04:09,721 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-29 02:04:09,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-29 02:04:10,141 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-29 02:04:10,141 INFO L295 CfgBuilder]: Removed 35 assume(true) statements. [2020-07-29 02:04:10,145 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.07 02:04:10 BoogieIcfgContainer [2020-07-29 02:04:10,145 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-29 02:04:10,146 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-07-29 02:04:10,147 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-07-29 02:04:10,150 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-07-29 02:04:10,151 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-29 02:04:10,151 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.07 02:04:09" (1/3) ... [2020-07-29 02:04:10,152 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5e94b977 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.07 02:04:10, skipping insertion in model container [2020-07-29 02:04:10,152 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-29 02:04:10,152 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:04:09" (2/3) ... [2020-07-29 02:04:10,153 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5e94b977 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.07 02:04:10, skipping insertion in model container [2020-07-29 02:04:10,153 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-29 02:04:10,153 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.07 02:04:10" (3/3) ... [2020-07-29 02:04:10,155 INFO L371 chiAutomizerObserver]: Analyzing ICFG stateful_check.c [2020-07-29 02:04:10,199 INFO L356 BuchiCegarLoop]: Interprodecural is true [2020-07-29 02:04:10,200 INFO L357 BuchiCegarLoop]: Hoare is false [2020-07-29 02:04:10,200 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-29 02:04:10,200 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-29 02:04:10,200 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-29 02:04:10,200 INFO L361 BuchiCegarLoop]: Difference is false [2020-07-29 02:04:10,200 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-29 02:04:10,201 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-07-29 02:04:10,212 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 40 states. [2020-07-29 02:04:10,241 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 31 [2020-07-29 02:04:10,241 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-29 02:04:10,241 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-29 02:04:10,246 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-07-29 02:04:10,246 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-07-29 02:04:10,246 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2020-07-29 02:04:10,247 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 40 states. [2020-07-29 02:04:10,253 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 31 [2020-07-29 02:04:10,253 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-29 02:04:10,254 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-29 02:04:10,254 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-07-29 02:04:10,254 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-07-29 02:04:10,260 INFO L794 eck$LassoCheckResult]: Stem: 33#ULTIMATE.startENTRYtrue ~ldv_mutex~0 := 1;~open_called~0 := 0; 8#L-1true havoc main_#res;havoc main_#t~ret1, main_#t~nondet3, main_#t~switch4, main_#t~ret5, main_#t~post6, main_#t~ret7, main_#t~post8, main_#t~ret9, main_#t~post10, main_#t~ret11, main_#t~nondet2, main_~ldv_s_misc_fops_file_operations~0;main_~ldv_s_misc_fops_file_operations~0 := 0;havoc my_init_#res;~open_called~0 := 0;my_init_#res := 0; 27#L70true main_#t~ret1 := my_init_#res;havoc main_#t~ret1; 10#L76-2true [2020-07-29 02:04:10,260 INFO L796 eck$LassoCheckResult]: Loop: 10#L76-2true assume !!(0 != main_#t~nondet2);havoc main_#t~nondet2;main_#t~switch4 := 0 == main_#t~nondet3; 3#L80true assume main_#t~switch4; 28#L81true assume !(0 == main_~ldv_s_misc_fops_file_operations~0); 21#L78true havoc main_#t~nondet3;havoc main_#t~switch4; 10#L76-2true [2020-07-29 02:04:10,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 02:04:10,266 INFO L82 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2020-07-29 02:04:10,274 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 02:04:10,275 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500301368] [2020-07-29 02:04:10,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 02:04:10,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 02:04:10,336 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 02:04:10,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 02:04:10,342 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 02:04:10,357 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-29 02:04:10,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 02:04:10,358 INFO L82 PathProgramCache]: Analyzing trace with hash 1327177, now seen corresponding path program 1 times [2020-07-29 02:04:10,358 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 02:04:10,359 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027837485] [2020-07-29 02:04:10,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 02:04:10,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 02:04:10,365 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 02:04:10,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 02:04:10,370 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 02:04:10,372 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-29 02:04:10,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 02:04:10,374 INFO L82 PathProgramCache]: Analyzing trace with hash 1804166377, now seen corresponding path program 1 times [2020-07-29 02:04:10,374 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 02:04:10,374 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962074783] [2020-07-29 02:04:10,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 02:04:10,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-29 02:04:10,461 INFO L280 TraceCheckUtils]: 0: Hoare triple {48#true} ~ldv_mutex~0 := 1;~open_called~0 := 0; {48#true} is VALID [2020-07-29 02:04:10,463 INFO L280 TraceCheckUtils]: 1: Hoare triple {48#true} havoc main_#res;havoc main_#t~ret1, main_#t~nondet3, main_#t~switch4, main_#t~ret5, main_#t~post6, main_#t~ret7, main_#t~post8, main_#t~ret9, main_#t~post10, main_#t~ret11, main_#t~nondet2, 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; {50#(= 0 ULTIMATE.start_main_~ldv_s_misc_fops_file_operations~0)} is VALID [2020-07-29 02:04:10,464 INFO L280 TraceCheckUtils]: 2: Hoare triple {50#(= 0 ULTIMATE.start_main_~ldv_s_misc_fops_file_operations~0)} main_#t~ret1 := my_init_#res;havoc main_#t~ret1; {50#(= 0 ULTIMATE.start_main_~ldv_s_misc_fops_file_operations~0)} is VALID [2020-07-29 02:04:10,465 INFO L280 TraceCheckUtils]: 3: Hoare triple {50#(= 0 ULTIMATE.start_main_~ldv_s_misc_fops_file_operations~0)} assume !!(0 != main_#t~nondet2);havoc main_#t~nondet2;main_#t~switch4 := 0 == main_#t~nondet3; {50#(= 0 ULTIMATE.start_main_~ldv_s_misc_fops_file_operations~0)} is VALID [2020-07-29 02:04:10,466 INFO L280 TraceCheckUtils]: 4: Hoare triple {50#(= 0 ULTIMATE.start_main_~ldv_s_misc_fops_file_operations~0)} assume main_#t~switch4; {50#(= 0 ULTIMATE.start_main_~ldv_s_misc_fops_file_operations~0)} is VALID [2020-07-29 02:04:10,467 INFO L280 TraceCheckUtils]: 5: Hoare triple {50#(= 0 ULTIMATE.start_main_~ldv_s_misc_fops_file_operations~0)} assume !(0 == main_~ldv_s_misc_fops_file_operations~0); {49#false} is VALID [2020-07-29 02:04:10,467 INFO L280 TraceCheckUtils]: 6: Hoare triple {49#false} havoc main_#t~nondet3;havoc main_#t~switch4; {49#false} is VALID [2020-07-29 02:04:10,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-29 02:04:10,470 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962074783] [2020-07-29 02:04:10,471 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-29 02:04:10,471 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-29 02:04:10,471 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795677205] [2020-07-29 02:04:10,540 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-29 02:04:10,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-29 02:04:10,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-29 02:04:10,556 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 3 states. [2020-07-29 02:04:10,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-29 02:04:10,702 INFO L93 Difference]: Finished difference Result 57 states and 73 transitions. [2020-07-29 02:04:10,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-29 02:04:10,704 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states. [2020-07-29 02:04:10,717 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 7 edges. 7 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-29 02:04:10,720 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 57 states and 73 transitions. [2020-07-29 02:04:10,726 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 38 [2020-07-29 02:04:10,734 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 57 states to 41 states and 57 transitions. [2020-07-29 02:04:10,735 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 41 [2020-07-29 02:04:10,736 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 41 [2020-07-29 02:04:10,736 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 57 transitions. [2020-07-29 02:04:10,737 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-07-29 02:04:10,737 INFO L688 BuchiCegarLoop]: Abstraction has 41 states and 57 transitions. [2020-07-29 02:04:10,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states and 57 transitions. [2020-07-29 02:04:10,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-07-29 02:04:10,768 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-29 02:04:10,768 INFO L82 GeneralOperation]: Start isEquivalent. First operand 41 states and 57 transitions. Second operand 41 states. [2020-07-29 02:04:10,769 INFO L74 IsIncluded]: Start isIncluded. First operand 41 states and 57 transitions. Second operand 41 states. [2020-07-29 02:04:10,770 INFO L87 Difference]: Start difference. First operand 41 states and 57 transitions. Second operand 41 states. [2020-07-29 02:04:10,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-29 02:04:10,775 INFO L93 Difference]: Finished difference Result 41 states and 57 transitions. [2020-07-29 02:04:10,775 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 57 transitions. [2020-07-29 02:04:10,776 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-29 02:04:10,777 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-29 02:04:10,777 INFO L74 IsIncluded]: Start isIncluded. First operand 41 states. Second operand 41 states and 57 transitions. [2020-07-29 02:04:10,777 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 41 states and 57 transitions. [2020-07-29 02:04:10,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-29 02:04:10,781 INFO L93 Difference]: Finished difference Result 41 states and 57 transitions. [2020-07-29 02:04:10,781 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 57 transitions. [2020-07-29 02:04:10,782 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-29 02:04:10,782 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-29 02:04:10,782 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-29 02:04:10,783 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-29 02:04:10,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-07-29 02:04:10,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 57 transitions. [2020-07-29 02:04:10,787 INFO L711 BuchiCegarLoop]: Abstraction has 41 states and 57 transitions. [2020-07-29 02:04:10,787 INFO L591 BuchiCegarLoop]: Abstraction has 41 states and 57 transitions. [2020-07-29 02:04:10,788 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2020-07-29 02:04:10,788 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 41 states and 57 transitions. [2020-07-29 02:04:10,789 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 38 [2020-07-29 02:04:10,790 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-29 02:04:10,790 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-29 02:04:10,790 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-07-29 02:04:10,790 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2020-07-29 02:04:10,791 INFO L794 eck$LassoCheckResult]: Stem: 142#ULTIMATE.startENTRY ~ldv_mutex~0 := 1;~open_called~0 := 0; 120#L-1 havoc main_#res;havoc main_#t~ret1, main_#t~nondet3, main_#t~switch4, main_#t~ret5, main_#t~post6, main_#t~ret7, main_#t~post8, main_#t~ret9, main_#t~post10, main_#t~ret11, main_#t~nondet2, main_~ldv_s_misc_fops_file_operations~0;main_~ldv_s_misc_fops_file_operations~0 := 0;havoc my_init_#res;~open_called~0 := 0;my_init_#res := 0; 121#L70 main_#t~ret1 := my_init_#res;havoc main_#t~ret1; 138#L76-2 [2020-07-29 02:04:10,791 INFO L796 eck$LassoCheckResult]: Loop: 138#L76-2 assume !!(0 != main_#t~nondet2);havoc main_#t~nondet2;main_#t~switch4 := 0 == main_#t~nondet3; 147#L80 assume !main_#t~switch4;main_#t~switch4 := main_#t~switch4 || 1 == main_#t~nondet3; 145#L88 assume main_#t~switch4; 146#L89 assume !(1 == main_~ldv_s_misc_fops_file_operations~0); 141#L78 havoc main_#t~nondet3;havoc main_#t~switch4; 138#L76-2 [2020-07-29 02:04:10,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 02:04:10,792 INFO L82 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 2 times [2020-07-29 02:04:10,792 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 02:04:10,792 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370650013] [2020-07-29 02:04:10,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 02:04:10,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 02:04:10,797 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 02:04:10,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 02:04:10,801 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 02:04:10,803 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-29 02:04:10,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 02:04:10,804 INFO L82 PathProgramCache]: Analyzing trace with hash 41592519, now seen corresponding path program 1 times [2020-07-29 02:04:10,804 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 02:04:10,804 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363913524] [2020-07-29 02:04:10,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 02:04:10,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 02:04:10,810 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 02:04:10,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 02:04:10,814 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 02:04:10,816 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-29 02:04:10,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 02:04:10,816 INFO L82 PathProgramCache]: Analyzing trace with hash 95032871, now seen corresponding path program 1 times [2020-07-29 02:04:10,817 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 02:04:10,817 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610941439] [2020-07-29 02:04:10,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 02:04:10,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 02:04:10,826 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 02:04:10,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 02:04:10,837 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 02:04:10,840 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-29 02:04:10,964 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-07-29 02:04:10,977 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.07 02:04:10 BoogieIcfgContainer [2020-07-29 02:04:10,977 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-07-29 02:04:10,978 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-07-29 02:04:10,978 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-07-29 02:04:10,979 INFO L275 PluginConnector]: Witness Printer initialized [2020-07-29 02:04:10,979 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.07 02:04:10" (3/4) ... [2020-07-29 02:04:10,983 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2020-07-29 02:04:11,026 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-07-29 02:04:11,027 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-07-29 02:04:11,030 INFO L168 Benchmark]: Toolchain (without parser) took 1764.74 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 155.7 MB). Free memory was 954.9 MB in the beginning and 1.1 GB in the end (delta: -99.2 MB). Peak memory consumption was 56.5 MB. Max. memory is 11.5 GB. [2020-07-29 02:04:11,030 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 981.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-29 02:04:11,031 INFO L168 Benchmark]: CACSL2BoogieTranslator took 257.78 ms. Allocated memory is still 1.0 GB. Free memory was 954.9 MB in the beginning and 944.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2020-07-29 02:04:11,032 INFO L168 Benchmark]: Boogie Procedure Inliner took 94.00 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 155.7 MB). Free memory was 944.1 MB in the beginning and 1.1 GB in the end (delta: -201.5 MB). Peak memory consumption was 15.1 MB. Max. memory is 11.5 GB. [2020-07-29 02:04:11,033 INFO L168 Benchmark]: Boogie Preprocessor took 27.48 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-29 02:04:11,034 INFO L168 Benchmark]: RCFGBuilder took 498.34 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 25.8 MB). Peak memory consumption was 25.8 MB. Max. memory is 11.5 GB. [2020-07-29 02:04:11,034 INFO L168 Benchmark]: BuchiAutomizer took 831.30 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 65.8 MB). Peak memory consumption was 65.8 MB. Max. memory is 11.5 GB. [2020-07-29 02:04:11,035 INFO L168 Benchmark]: Witness Printer took 48.79 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-29 02:04:11,039 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 981.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 257.78 ms. Allocated memory is still 1.0 GB. Free memory was 954.9 MB in the beginning and 944.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 94.00 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 155.7 MB). Free memory was 944.1 MB in the beginning and 1.1 GB in the end (delta: -201.5 MB). Peak memory consumption was 15.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 27.48 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 498.34 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 25.8 MB). Peak memory consumption was 25.8 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 831.30 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 65.8 MB). Peak memory consumption was 65.8 MB. Max. memory is 11.5 GB. * Witness Printer took 48.79 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 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 0.7s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 0.4s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. 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: 76]: Nontermination argument in form of an infinite program execution. [2020-07-29 02:04:11,049 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-07-29 02:04:11,050 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 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 {} State at position 1 is {\result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7460cd46=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@49fdbbc3=0, \result=0, ldv_mutex=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@34faafcc=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@7c8273be=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@43f5623d=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@5727544=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@8ba3e76=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6f66f571=1, NULL=0, open_called=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1745eb7a=2, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@dbbf09a=0, ldv_s_misc_fops_file_operations=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 76]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L9] int ldv_mutex = 1; [L11] int open_called = 0; [L74] int ldv_s_misc_fops_file_operations = 0; [L69] open_called = 0 [L70] return 0; Loop: [L76] COND TRUE __VERIFIER_nondet_int() [L80] case 0: [L88] case 1: [L89] COND FALSE !(ldv_s_misc_fops_file_operations==1) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...