./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/loops/while_infinite_loop_1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/loops/while_infinite_loop_1.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 a34bff9f8dcb1cc5ffc10550dff41d19a382faaa .......................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 07:04:59,872 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 07:04:59,875 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 07:04:59,900 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 07:04:59,900 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 07:04:59,902 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 07:04:59,903 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 07:04:59,905 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 07:04:59,906 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 07:04:59,907 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 07:04:59,908 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 07:04:59,910 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 07:04:59,910 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 07:04:59,911 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 07:04:59,912 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 07:04:59,913 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 07:04:59,922 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 07:04:59,923 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 07:04:59,927 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 07:04:59,931 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 07:04:59,935 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 07:04:59,937 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 07:04:59,941 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 07:04:59,942 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 07:04:59,945 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 07:04:59,949 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 07:04:59,949 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 07:04:59,951 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 07:04:59,952 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 07:04:59,955 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 07:04:59,955 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 07:04:59,956 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 07:04:59,957 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 07:04:59,958 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 07:04:59,959 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 07:04:59,960 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 07:04:59,961 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 07:04:59,961 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 07:04:59,961 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 07:04:59,963 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 07:04:59,965 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 07:04:59,966 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-10-20 07:05:00,017 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 07:05:00,018 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 07:05:00,020 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 07:05:00,020 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 07:05:00,020 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 07:05:00,020 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-20 07:05:00,021 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-20 07:05:00,021 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-20 07:05:00,021 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-20 07:05:00,021 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-20 07:05:00,022 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-20 07:05:00,023 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 07:05:00,023 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 07:05:00,024 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 07:05:00,024 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 07:05:00,024 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 07:05:00,024 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 07:05:00,025 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-20 07:05:00,025 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-20 07:05:00,025 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-20 07:05:00,025 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 07:05:00,026 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 07:05:00,026 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-20 07:05:00,026 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 07:05:00,026 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-20 07:05:00,027 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 07:05:00,027 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 07:05:00,027 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-20 07:05:00,027 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 07:05:00,028 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 07:05:00,028 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 07:05:00,028 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-20 07:05:00,030 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-20 07:05:00,030 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 -> a34bff9f8dcb1cc5ffc10550dff41d19a382faaa [2020-10-20 07:05:00,228 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 07:05:00,253 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 07:05:00,257 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 07:05:00,259 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 07:05:00,260 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 07:05:00,260 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/while_infinite_loop_1.c [2020-10-20 07:05:00,332 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ae89e919/75ec9c1a581a499b95ad43e9c7e4e10b/FLAG12f850e49 [2020-10-20 07:05:00,795 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 07:05:00,796 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/while_infinite_loop_1.c [2020-10-20 07:05:00,802 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ae89e919/75ec9c1a581a499b95ad43e9c7e4e10b/FLAG12f850e49 [2020-10-20 07:05:01,236 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ae89e919/75ec9c1a581a499b95ad43e9c7e4e10b [2020-10-20 07:05:01,239 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 07:05:01,245 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 07:05:01,246 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 07:05:01,246 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 07:05:01,250 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 07:05:01,251 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 07:05:01" (1/1) ... [2020-10-20 07:05:01,254 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35849c44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:05:01, skipping insertion in model container [2020-10-20 07:05:01,254 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 07:05:01" (1/1) ... [2020-10-20 07:05:01,262 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 07:05:01,282 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 07:05:01,529 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 07:05:01,548 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 07:05:01,567 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 07:05:01,587 INFO L208 MainTranslator]: Completed translation [2020-10-20 07:05:01,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:05:01 WrapperNode [2020-10-20 07:05:01,589 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 07:05:01,590 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 07:05:01,591 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 07:05:01,591 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 07:05:01,601 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:05:01" (1/1) ... [2020-10-20 07:05:01,611 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:05:01" (1/1) ... [2020-10-20 07:05:01,631 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 07:05:01,632 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 07:05:01,632 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 07:05:01,632 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 07:05:01,642 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:05:01" (1/1) ... [2020-10-20 07:05:01,642 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:05:01" (1/1) ... [2020-10-20 07:05:01,644 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:05:01" (1/1) ... [2020-10-20 07:05:01,644 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:05:01" (1/1) ... [2020-10-20 07:05:01,648 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:05:01" (1/1) ... [2020-10-20 07:05:01,652 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:05:01" (1/1) ... [2020-10-20 07:05:01,653 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:05:01" (1/1) ... [2020-10-20 07:05:01,655 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 07:05:01,655 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 07:05:01,655 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 07:05:01,656 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 07:05:01,656 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:05:01" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:05:01,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 07:05:01,714 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 07:05:01,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 07:05:01,714 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 07:05:01,903 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 07:05:01,903 INFO L298 CfgBuilder]: Removed 13 assume(true) statements. [2020-10-20 07:05:01,905 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 07:05:01 BoogieIcfgContainer [2020-10-20 07:05:01,905 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 07:05:01,906 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-20 07:05:01,906 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-20 07:05:01,910 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-20 07:05:01,911 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 07:05:01,911 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.10 07:05:01" (1/3) ... [2020-10-20 07:05:01,912 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@342ecab4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.10 07:05:01, skipping insertion in model container [2020-10-20 07:05:01,912 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 07:05:01,913 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:05:01" (2/3) ... [2020-10-20 07:05:01,913 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@342ecab4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.10 07:05:01, skipping insertion in model container [2020-10-20 07:05:01,913 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 07:05:01,913 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 07:05:01" (3/3) ... [2020-10-20 07:05:01,915 INFO L373 chiAutomizerObserver]: Analyzing ICFG while_infinite_loop_1.c [2020-10-20 07:05:01,999 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-20 07:05:01,999 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-20 07:05:01,999 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-20 07:05:01,999 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 07:05:02,000 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 07:05:02,000 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-20 07:05:02,000 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 07:05:02,000 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-20 07:05:02,038 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states. [2020-10-20 07:05:02,097 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-20 07:05:02,098 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 07:05:02,101 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 07:05:02,117 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-10-20 07:05:02,117 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-20 07:05:02,117 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-10-20 07:05:02,118 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states. [2020-10-20 07:05:02,119 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-20 07:05:02,119 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 07:05:02,119 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 07:05:02,120 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-10-20 07:05:02,120 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-20 07:05:02,128 INFO L794 eck$LassoCheckResult]: Stem: 7#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(24);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 6#L-1true havoc main_#res;havoc main_~x~0;main_~x~0 := 0; 15#L6-2true [2020-10-20 07:05:02,129 INFO L796 eck$LassoCheckResult]: Loop: 15#L6-2true assume !false;__VERIFIER_assert_#in~cond := (if 0 == main_~x~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 3#L6true assume !(0 == __VERIFIER_assert_~cond); 15#L6-2true [2020-10-20 07:05:02,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 07:05:02,136 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2020-10-20 07:05:02,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 07:05:02,147 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832865181] [2020-10-20 07:05:02,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 07:05:02,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:05:02,256 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:05:02,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:05:02,272 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:05:02,292 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 07:05:02,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 07:05:02,293 INFO L82 PathProgramCache]: Analyzing trace with hash 1322, now seen corresponding path program 1 times [2020-10-20 07:05:02,294 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 07:05:02,294 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283589415] [2020-10-20 07:05:02,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 07:05:02,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:05:02,309 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:05:02,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:05:02,313 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:05:02,315 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 07:05:02,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 07:05:02,317 INFO L82 PathProgramCache]: Analyzing trace with hash 925804, now seen corresponding path program 1 times [2020-10-20 07:05:02,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 07:05:02,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017962411] [2020-10-20 07:05:02,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 07:05:02,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:05:02,349 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:05:02,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:05:02,362 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:05:02,367 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 07:05:02,611 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 53 [2020-10-20 07:05:02,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.10 07:05:02 BoogieIcfgContainer [2020-10-20 07:05:02,720 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-10-20 07:05:02,720 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 07:05:02,720 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 07:05:02,720 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 07:05:02,721 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 07:05:01" (3/4) ... [2020-10-20 07:05:02,724 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2020-10-20 07:05:02,765 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 07:05:02,766 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 07:05:02,768 INFO L168 Benchmark]: Toolchain (without parser) took 1527.11 ms. Allocated memory was 40.4 MB in the beginning and 45.1 MB in the end (delta: 4.7 MB). Free memory was 18.0 MB in the beginning and 21.0 MB in the end (delta: -3.0 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. [2020-10-20 07:05:02,769 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 30.9 MB. Free memory was 16.6 MB in the beginning and 16.5 MB in the end (delta: 28.9 kB). Peak memory consumption was 28.9 kB. Max. memory is 14.3 GB. [2020-10-20 07:05:02,770 INFO L168 Benchmark]: CACSL2BoogieTranslator took 343.91 ms. Allocated memory was 40.4 MB in the beginning and 41.4 MB in the end (delta: 1.0 MB). Free memory was 17.0 MB in the beginning and 18.3 MB in the end (delta: -1.2 MB). Peak memory consumption was 7.6 MB. Max. memory is 14.3 GB. [2020-10-20 07:05:02,771 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.31 ms. Allocated memory is still 41.4 MB. Free memory was 18.3 MB in the beginning and 16.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. [2020-10-20 07:05:02,772 INFO L168 Benchmark]: Boogie Preprocessor took 22.95 ms. Allocated memory is still 41.4 MB. Free memory was 16.5 MB in the beginning and 15.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 14.3 GB. [2020-10-20 07:05:02,773 INFO L168 Benchmark]: RCFGBuilder took 250.32 ms. Allocated memory was 41.4 MB in the beginning and 43.0 MB in the end (delta: 1.6 MB). Free memory was 15.4 MB in the beginning and 19.5 MB in the end (delta: -4.1 MB). Peak memory consumption was 4.9 MB. Max. memory is 14.3 GB. [2020-10-20 07:05:02,774 INFO L168 Benchmark]: BuchiAutomizer took 813.58 ms. Allocated memory was 43.0 MB in the beginning and 45.1 MB in the end (delta: 2.1 MB). Free memory was 19.3 MB in the beginning and 23.2 MB in the end (delta: -3.8 MB). Peak memory consumption was 11.0 MB. Max. memory is 14.3 GB. [2020-10-20 07:05:02,775 INFO L168 Benchmark]: Witness Printer took 45.81 ms. Allocated memory is still 45.1 MB. Free memory was 22.9 MB in the beginning and 21.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 14.3 GB. [2020-10-20 07:05:02,780 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 30.9 MB. Free memory was 16.6 MB in the beginning and 16.5 MB in the end (delta: 28.9 kB). Peak memory consumption was 28.9 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 343.91 ms. Allocated memory was 40.4 MB in the beginning and 41.4 MB in the end (delta: 1.0 MB). Free memory was 17.0 MB in the beginning and 18.3 MB in the end (delta: -1.2 MB). Peak memory consumption was 7.6 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 41.31 ms. Allocated memory is still 41.4 MB. Free memory was 18.3 MB in the beginning and 16.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 22.95 ms. Allocated memory is still 41.4 MB. Free memory was 16.5 MB in the beginning and 15.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 14.3 GB. * RCFGBuilder took 250.32 ms. Allocated memory was 41.4 MB in the beginning and 43.0 MB in the end (delta: 1.6 MB). Free memory was 15.4 MB in the beginning and 19.5 MB in the end (delta: -4.1 MB). Peak memory consumption was 4.9 MB. Max. memory is 14.3 GB. * BuchiAutomizer took 813.58 ms. Allocated memory was 43.0 MB in the beginning and 45.1 MB in the end (delta: 2.1 MB). Free memory was 19.3 MB in the beginning and 23.2 MB in the end (delta: -3.8 MB). Peak memory consumption was 11.0 MB. Max. memory is 14.3 GB. * Witness Printer took 45.81 ms. Allocated memory is still 45.1 MB. Free memory was 22.9 MB in the beginning and 21.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Trivial decomposition into one nonterminating module. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.7s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.5s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 0. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: No data available LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 1]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=1} State at position 1 is {cond=1, NULL=0, NULL=0, NULL=0, NULL=2, NULL=0, \result=0, NULL=3, NULL=1, \old(cond)=1, NULL=0, x=0, NULL=4} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 5]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L13] int x=0; Loop: [L15] COND TRUE 1 [L6] COND FALSE !(!(cond)) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...