./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 906a4fb5 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -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 0.1.25-906a4fb [2020-10-19 19:09:10,387 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 19:09:10,390 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 19:09:10,432 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 19:09:10,432 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 19:09:10,442 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 19:09:10,444 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 19:09:10,448 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 19:09:10,450 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 19:09:10,453 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 19:09:10,455 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 19:09:10,456 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 19:09:10,457 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 19:09:10,461 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 19:09:10,462 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 19:09:10,464 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 19:09:10,466 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 19:09:10,467 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 19:09:10,469 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 19:09:10,476 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 19:09:10,478 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 19:09:10,479 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 19:09:10,481 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 19:09:10,482 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 19:09:10,497 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 19:09:10,501 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 19:09:10,501 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 19:09:10,502 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 19:09:10,503 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 19:09:10,504 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 19:09:10,504 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 19:09:10,505 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 19:09:10,506 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 19:09:10,510 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 19:09:10,510 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 19:09:10,511 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 19:09:10,512 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 19:09:10,513 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 19:09:10,514 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 19:09:10,515 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 19:09:10,516 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 19:09:10,517 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-10-19 19:09:10,556 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 19:09:10,556 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 19:09:10,558 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 19:09:10,558 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 19:09:10,558 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 19:09:10,559 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-19 19:09:10,559 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-19 19:09:10,559 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-19 19:09:10,559 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-19 19:09:10,560 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-19 19:09:10,561 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-19 19:09:10,561 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 19:09:10,561 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 19:09:10,562 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 19:09:10,562 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 19:09:10,562 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 19:09:10,563 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 19:09:10,563 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-19 19:09:10,563 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-19 19:09:10,564 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-19 19:09:10,564 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 19:09:10,564 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-19 19:09:10,564 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-19 19:09:10,565 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 19:09:10,565 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-19 19:09:10,565 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 19:09:10,566 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 19:09:10,566 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-19 19:09:10,566 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 19:09:10,566 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 19:09:10,567 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 19:09:10,567 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-19 19:09:10,569 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-19 19:09:10,569 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 [2020-10-19 19:09:10,910 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 19:09:10,922 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 19:09:10,926 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 19:09:10,928 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 19:09:10,928 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 19:09:10,929 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-regression/stateful_check.c [2020-10-19 19:09:10,989 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e83530fba/b70a3783e7ff41daa270a6fb8aa61b5b/FLAGcd66220e9 [2020-10-19 19:09:11,387 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 19:09:11,387 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/stateful_check.c [2020-10-19 19:09:11,395 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e83530fba/b70a3783e7ff41daa270a6fb8aa61b5b/FLAGcd66220e9 [2020-10-19 19:09:11,801 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e83530fba/b70a3783e7ff41daa270a6fb8aa61b5b [2020-10-19 19:09:11,804 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 19:09:11,811 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-19 19:09:11,813 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 19:09:11,813 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 19:09:11,817 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 19:09:11,817 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 07:09:11" (1/1) ... [2020-10-19 19:09:11,820 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65655e67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:09:11, skipping insertion in model container [2020-10-19 19:09:11,821 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 07:09:11" (1/1) ... [2020-10-19 19:09:11,828 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 19:09:11,850 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 19:09:12,036 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 19:09:12,047 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 19:09:12,070 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 19:09:12,176 INFO L208 MainTranslator]: Completed translation [2020-10-19 19:09:12,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:09:12 WrapperNode [2020-10-19 19:09:12,177 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 19:09:12,178 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-19 19:09:12,179 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-19 19:09:12,179 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-19 19:09:12,188 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:09:12" (1/1) ... [2020-10-19 19:09:12,200 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:09:12" (1/1) ... [2020-10-19 19:09:12,238 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-19 19:09:12,239 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 19:09:12,239 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 19:09:12,239 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 19:09:12,249 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:09:12" (1/1) ... [2020-10-19 19:09:12,249 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:09:12" (1/1) ... [2020-10-19 19:09:12,260 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:09:12" (1/1) ... [2020-10-19 19:09:12,261 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:09:12" (1/1) ... [2020-10-19 19:09:12,270 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:09:12" (1/1) ... [2020-10-19 19:09:12,281 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:09:12" (1/1) ... [2020-10-19 19:09:12,287 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:09:12" (1/1) ... [2020-10-19 19:09:12,293 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 19:09:12,295 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 19:09:12,296 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 19:09:12,296 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 19:09:12,297 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:09:12" (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 [2020-10-19 19:09:12,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-19 19:09:12,366 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 19:09:12,366 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 19:09:12,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 19:09:12,718 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 19:09:12,719 INFO L298 CfgBuilder]: Removed 45 assume(true) statements. [2020-10-19 19:09:12,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 07:09:12 BoogieIcfgContainer [2020-10-19 19:09:12,720 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 19:09:12,721 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-19 19:09:12,721 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-19 19:09:12,725 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-19 19:09:12,726 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-19 19:09:12,726 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 19.10 07:09:11" (1/3) ... [2020-10-19 19:09:12,727 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4ab40955 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.10 07:09:12, skipping insertion in model container [2020-10-19 19:09:12,727 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-19 19:09:12,728 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:09:12" (2/3) ... [2020-10-19 19:09:12,728 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4ab40955 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.10 07:09:12, skipping insertion in model container [2020-10-19 19:09:12,728 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-19 19:09:12,728 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 07:09:12" (3/3) ... [2020-10-19 19:09:12,730 INFO L373 chiAutomizerObserver]: Analyzing ICFG stateful_check.c [2020-10-19 19:09:12,779 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-19 19:09:12,781 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-19 19:09:12,781 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-19 19:09:12,781 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 19:09:12,781 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 19:09:12,781 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-19 19:09:12,782 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 19:09:12,782 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-19 19:09:12,802 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 45 states. [2020-10-19 19:09:12,823 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 35 [2020-10-19 19:09:12,824 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 19:09:12,824 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 19:09:12,832 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-10-19 19:09:12,833 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-10-19 19:09:12,833 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-10-19 19:09:12,833 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 45 states. [2020-10-19 19:09:12,837 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 35 [2020-10-19 19:09:12,837 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 19:09:12,837 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 19:09:12,838 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-10-19 19:09:12,838 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-10-19 19:09:12,845 INFO L794 eck$LassoCheckResult]: Stem: 40#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(17);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);~ldv_mutex~0 := 1;~open_called~0 := 0; 11#L-1true havoc main_#res;havoc main_#t~ret8, main_#t~nondet10, main_#t~switch11, main_#t~ret12, main_#t~post13, main_#t~ret14, main_#t~post15, main_#t~ret16, main_#t~post17, main_#t~ret18, main_#t~nondet9, main_~ldv_s_misc_fops_file_operations~0;main_~ldv_s_misc_fops_file_operations~0 := 0;havoc my_init_#res;~open_called~0 := 0;my_init_#res := 0; 37#L72true main_#t~ret8 := my_init_#res;havoc main_#t~ret8; 20#L78-2true [2020-10-19 19:09:12,845 INFO L796 eck$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 [2020-10-19 19:09:12,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 19:09:12,850 INFO L82 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2020-10-19 19:09:12,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 19:09:12,859 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470336815] [2020-10-19 19:09:12,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 19:09:12,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 19:09:12,958 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 19:09:12,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 19:09:12,975 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 19:09:12,997 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 19:09:12,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 19:09:12,999 INFO L82 PathProgramCache]: Analyzing trace with hash 1327185, now seen corresponding path program 1 times [2020-10-19 19:09:12,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 19:09:13,000 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493379748] [2020-10-19 19:09:13,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 19:09:13,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 19:09:13,007 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 19:09:13,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 19:09:13,010 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 19:09:13,013 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 19:09:13,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 19:09:13,015 INFO L82 PathProgramCache]: Analyzing trace with hash 1804166385, now seen corresponding path program 1 times [2020-10-19 19:09:13,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 19:09:13,015 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225683314] [2020-10-19 19:09:13,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 19:09:13,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 19:09:13,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 19:09:13,083 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225683314] [2020-10-19 19:09:13,084 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 19:09:13,085 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 19:09:13,085 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131979517] [2020-10-19 19:09:13,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 19:09:13,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 19:09:13,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 19:09:13,188 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 3 states. [2020-10-19 19:09:13,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 19:09:13,254 INFO L93 Difference]: Finished difference Result 57 states and 73 transitions. [2020-10-19 19:09:13,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 19:09:13,257 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 57 states and 73 transitions. [2020-10-19 19:09:13,261 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 38 [2020-10-19 19:09:13,266 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 57 states to 41 states and 57 transitions. [2020-10-19 19:09:13,267 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 41 [2020-10-19 19:09:13,268 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 41 [2020-10-19 19:09:13,268 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 57 transitions. [2020-10-19 19:09:13,269 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-19 19:09:13,270 INFO L691 BuchiCegarLoop]: Abstraction has 41 states and 57 transitions. [2020-10-19 19:09:13,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states and 57 transitions. [2020-10-19 19:09:13,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-10-19 19:09:13,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-19 19:09:13,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 57 transitions. [2020-10-19 19:09:13,302 INFO L714 BuchiCegarLoop]: Abstraction has 41 states and 57 transitions. [2020-10-19 19:09:13,303 INFO L594 BuchiCegarLoop]: Abstraction has 41 states and 57 transitions. [2020-10-19 19:09:13,303 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-10-19 19:09:13,303 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 41 states and 57 transitions. [2020-10-19 19:09:13,304 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 38 [2020-10-19 19:09:13,305 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 19:09:13,305 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 19:09:13,305 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-10-19 19:09:13,306 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2020-10-19 19:09:13,306 INFO L794 eck$LassoCheckResult]: Stem: 146#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(17);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);~ldv_mutex~0 := 1;~open_called~0 := 0; 127#L-1 havoc main_#res;havoc main_#t~ret8, main_#t~nondet10, main_#t~switch11, main_#t~ret12, main_#t~post13, main_#t~ret14, main_#t~post15, main_#t~ret16, main_#t~post17, main_#t~ret18, main_#t~nondet9, main_~ldv_s_misc_fops_file_operations~0;main_~ldv_s_misc_fops_file_operations~0 := 0;havoc my_init_#res;~open_called~0 := 0;my_init_#res := 0; 128#L72 main_#t~ret8 := my_init_#res;havoc main_#t~ret8; 118#L78-2 [2020-10-19 19:09:13,306 INFO L796 eck$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 [2020-10-19 19:09:13,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 19:09:13,307 INFO L82 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 2 times [2020-10-19 19:09:13,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 19:09:13,308 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491573061] [2020-10-19 19:09:13,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 19:09:13,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 19:09:13,320 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 19:09:13,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 19:09:13,331 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 19:09:13,335 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 19:09:13,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 19:09:13,336 INFO L82 PathProgramCache]: Analyzing trace with hash 41592527, now seen corresponding path program 1 times [2020-10-19 19:09:13,336 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 19:09:13,337 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401593735] [2020-10-19 19:09:13,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 19:09:13,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 19:09:13,342 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 19:09:13,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 19:09:13,346 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 19:09:13,348 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 19:09:13,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 19:09:13,349 INFO L82 PathProgramCache]: Analyzing trace with hash 95032879, now seen corresponding path program 1 times [2020-10-19 19:09:13,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 19:09:13,350 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35965581] [2020-10-19 19:09:13,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 19:09:13,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 19:09:13,377 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 19:09:13,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 19:09:13,401 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 19:09:13,411 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 19:09:13,664 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61 [2020-10-19 19:09:13,772 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 [2020-10-19 19:09:13,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 19.10 07:09:13 BoogieIcfgContainer [2020-10-19 19:09:13,786 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-10-19 19:09:13,787 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 19:09:13,787 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 19:09:13,787 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 19:09:13,788 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 07:09:12" (3/4) ... [2020-10-19 19:09:13,791 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2020-10-19 19:09:13,835 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-19 19:09:13,835 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 19:09:13,837 INFO L168 Benchmark]: Toolchain (without parser) took 2030.86 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 120.1 MB). Free memory was 958.6 MB in the beginning and 1.0 GB in the end (delta: -47.0 MB). Peak memory consumption was 73.1 MB. Max. memory is 11.5 GB. [2020-10-19 19:09:13,838 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 19:09:13,839 INFO L168 Benchmark]: CACSL2BoogieTranslator took 365.27 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 120.1 MB). Free memory was 958.6 MB in the beginning and 1.1 GB in the end (delta: -150.2 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. [2020-10-19 19:09:13,839 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.13 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 19:09:13,840 INFO L168 Benchmark]: Boogie Preprocessor took 56.20 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 19:09:13,841 INFO L168 Benchmark]: RCFGBuilder took 425.31 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 27.8 MB). Peak memory consumption was 27.8 MB. Max. memory is 11.5 GB. [2020-10-19 19:09:13,841 INFO L168 Benchmark]: BuchiAutomizer took 1065.16 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 75.5 MB). Peak memory consumption was 75.5 MB. Max. memory is 11.5 GB. [2020-10-19 19:09:13,842 INFO L168 Benchmark]: Witness Printer took 48.36 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 19:09:13,845 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 365.27 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 120.1 MB). Free memory was 958.6 MB in the beginning and 1.1 GB in the end (delta: -150.2 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 60.13 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 56.20 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 425.31 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 27.8 MB). Peak memory consumption was 27.8 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 1065.16 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 75.5 MB). Peak memory consumption was 75.5 MB. Max. memory is 11.5 GB. * Witness Printer took 48.36 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 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~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 1.0s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 0.7s. 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. [2020-10-19 19:09:13,854 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 [2020-10-19 19:09:13,856 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@7dcdfcd4=0, NULL=0, \result=0, NULL=3824, ldv_mutex=1, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@198e5a6=11, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3525542b=1, open_called=0, NULL=3826, ldv_s_misc_fops_file_operations=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6c1a1c5d=0, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@c263f63=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@42f20f23=0, NULL=3825, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@49fb5ccc=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@2f87b144=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@4be73b0d=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@336b36b5=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...