./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-crafted/NonTerminationSimple7.c --full-output --architecture 64bit -------------------------------------------------------------------------------- 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/termination-crafted/NonTerminationSimple7.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-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 64bit --witnessprinter.graph.data.programhash e53f2fdb98621a674cb41b7388b3e8cc7db6ca72 ....................................................................................................................................................................................................................................................................... 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 06:33:16,299 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 06:33:16,302 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 06:33:16,331 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 06:33:16,332 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 06:33:16,333 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 06:33:16,334 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 06:33:16,336 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 06:33:16,345 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 06:33:16,346 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 06:33:16,348 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 06:33:16,349 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 06:33:16,349 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 06:33:16,350 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 06:33:16,351 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 06:33:16,353 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 06:33:16,354 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 06:33:16,355 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 06:33:16,357 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 06:33:16,359 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 06:33:16,361 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 06:33:16,362 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 06:33:16,364 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 06:33:16,365 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 06:33:16,367 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 06:33:16,368 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 06:33:16,368 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 06:33:16,369 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 06:33:16,370 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 06:33:16,371 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 06:33:16,371 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 06:33:16,372 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 06:33:16,373 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 06:33:16,374 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 06:33:16,375 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 06:33:16,375 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 06:33:16,376 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 06:33:16,376 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 06:33:16,376 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 06:33:16,377 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 06:33:16,378 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 06:33:16,379 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-10-20 06:33:16,411 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 06:33:16,411 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 06:33:16,413 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 06:33:16,413 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 06:33:16,413 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 06:33:16,413 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-20 06:33:16,414 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-20 06:33:16,414 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-20 06:33:16,414 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-20 06:33:16,414 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-20 06:33:16,415 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-20 06:33:16,415 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 06:33:16,415 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 06:33:16,415 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 06:33:16,416 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 06:33:16,416 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-20 06:33:16,416 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-20 06:33:16,416 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-20 06:33:16,417 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 06:33:16,417 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-20 06:33:16,417 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 06:33:16,417 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-20 06:33:16,418 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 06:33:16,418 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 06:33:16,418 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-20 06:33:16,419 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 06:33:16,419 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 06:33:16,419 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 06:33:16,419 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-20 06:33:16,420 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-20 06:33:16,421 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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e53f2fdb98621a674cb41b7388b3e8cc7db6ca72 [2020-10-20 06:33:16,631 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 06:33:16,652 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 06:33:16,656 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 06:33:16,658 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 06:33:16,658 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 06:33:16,659 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/NonTerminationSimple7.c [2020-10-20 06:33:16,722 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad13dcd4e/ade3a46e682446a3bff009c28c34a831/FLAG649b54886 [2020-10-20 06:33:17,148 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 06:33:17,149 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/NonTerminationSimple7.c [2020-10-20 06:33:17,156 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad13dcd4e/ade3a46e682446a3bff009c28c34a831/FLAG649b54886 [2020-10-20 06:33:17,576 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad13dcd4e/ade3a46e682446a3bff009c28c34a831 [2020-10-20 06:33:17,580 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 06:33:17,587 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 06:33:17,588 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 06:33:17,588 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 06:33:17,592 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 06:33:17,593 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:33:17" (1/1) ... [2020-10-20 06:33:17,596 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f55e739 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:33:17, skipping insertion in model container [2020-10-20 06:33:17,597 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:33:17" (1/1) ... [2020-10-20 06:33:17,605 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 06:33:17,621 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 06:33:17,848 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:33:17,855 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 06:33:17,873 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:33:17,891 INFO L208 MainTranslator]: Completed translation [2020-10-20 06:33:17,892 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:33:17 WrapperNode [2020-10-20 06:33:17,892 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 06:33:17,894 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 06:33:17,894 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 06:33:17,894 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 06:33:17,906 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:33:17" (1/1) ... [2020-10-20 06:33:17,911 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:33:17" (1/1) ... [2020-10-20 06:33:17,929 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 06:33:17,930 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 06:33:17,930 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 06:33:17,930 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 06:33:17,939 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:33:17" (1/1) ... [2020-10-20 06:33:17,940 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:33:17" (1/1) ... [2020-10-20 06:33:17,940 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:33:17" (1/1) ... [2020-10-20 06:33:17,941 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:33:17" (1/1) ... [2020-10-20 06:33:17,943 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:33:17" (1/1) ... [2020-10-20 06:33:17,947 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:33:17" (1/1) ... [2020-10-20 06:33:17,948 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:33:17" (1/1) ... [2020-10-20 06:33:17,949 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 06:33:17,950 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 06:33:17,950 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 06:33:17,950 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 06:33:17,951 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:33:17" (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 06:33:18,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 06:33:18,011 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 06:33:18,158 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 06:33:18,159 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-20 06:33:18,160 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:33:18 BoogieIcfgContainer [2020-10-20 06:33:18,160 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 06:33:18,161 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-20 06:33:18,161 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-20 06:33:18,164 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-20 06:33:18,165 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 06:33:18,166 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.10 06:33:17" (1/3) ... [2020-10-20 06:33:18,173 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@12542a6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.10 06:33:18, skipping insertion in model container [2020-10-20 06:33:18,174 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 06:33:18,174 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:33:17" (2/3) ... [2020-10-20 06:33:18,174 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@12542a6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.10 06:33:18, skipping insertion in model container [2020-10-20 06:33:18,174 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 06:33:18,175 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:33:18" (3/3) ... [2020-10-20 06:33:18,177 INFO L373 chiAutomizerObserver]: Analyzing ICFG NonTerminationSimple7.c [2020-10-20 06:33:18,228 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-20 06:33:18,228 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-20 06:33:18,229 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-20 06:33:18,229 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 06:33:18,229 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 06:33:18,229 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-20 06:33:18,229 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 06:33:18,229 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-20 06:33:18,247 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2020-10-20 06:33:18,267 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-10-20 06:33:18,268 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:33:18,268 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:33:18,274 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-10-20 06:33:18,274 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-10-20 06:33:18,274 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-10-20 06:33:18,275 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2020-10-20 06:33:18,275 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-10-20 06:33:18,276 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:33:18,276 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:33:18,276 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-10-20 06:33:18,276 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-10-20 06:33:18,283 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0;havoc main_~c~0;havoc main_~x~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~c~0 := main_#t~nondet1;havoc main_#t~nondet1; 3#L15true assume 0 == main_~c~0; 7#L16-2true [2020-10-20 06:33:18,283 INFO L796 eck$LassoCheckResult]: Loop: 7#L16-2true assume !!(main_~x~0 >= 0);main_~x~0 := main_~x~0 + main_~c~0; 7#L16-2true [2020-10-20 06:33:18,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:33:18,288 INFO L82 PathProgramCache]: Analyzing trace with hash 996, now seen corresponding path program 1 times [2020-10-20 06:33:18,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:33:18,296 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330657287] [2020-10-20 06:33:18,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:33:18,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:33:18,371 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:33:18,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:33:18,376 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:33:18,393 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:33:18,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:33:18,395 INFO L82 PathProgramCache]: Analyzing trace with hash 44, now seen corresponding path program 1 times [2020-10-20 06:33:18,395 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:33:18,395 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822785942] [2020-10-20 06:33:18,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:33:18,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:33:18,404 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:33:18,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:33:18,407 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:33:18,408 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:33:18,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:33:18,410 INFO L82 PathProgramCache]: Analyzing trace with hash 30889, now seen corresponding path program 1 times [2020-10-20 06:33:18,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:33:18,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459106242] [2020-10-20 06:33:18,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:33:18,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:33:18,419 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:33:18,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:33:18,426 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:33:18,428 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:33:18,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.10 06:33:18 BoogieIcfgContainer [2020-10-20 06:33:18,549 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-10-20 06:33:18,550 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 06:33:18,551 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 06:33:18,551 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 06:33:18,551 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:33:18" (3/4) ... [2020-10-20 06:33:18,555 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2020-10-20 06:33:18,629 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 06:33:18,629 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 06:33:18,632 INFO L168 Benchmark]: Toolchain (without parser) took 1049.64 ms. Allocated memory was 35.7 MB in the beginning and 47.2 MB in the end (delta: 11.5 MB). Free memory was 13.2 MB in the beginning and 21.1 MB in the end (delta: -8.0 MB). Peak memory consumption was 3.6 MB. Max. memory is 14.3 GB. [2020-10-20 06:33:18,634 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 34.1 MB. Free memory was 19.3 MB in the beginning and 19.3 MB in the end (delta: 29.2 kB). Peak memory consumption was 29.2 kB. Max. memory is 14.3 GB. [2020-10-20 06:33:18,635 INFO L168 Benchmark]: CACSL2BoogieTranslator took 304.49 ms. Allocated memory was 35.7 MB in the beginning and 44.6 MB in the end (delta: 8.9 MB). Free memory was 12.3 MB in the beginning and 26.5 MB in the end (delta: -14.2 MB). Peak memory consumption was 11.2 MB. Max. memory is 14.3 GB. [2020-10-20 06:33:18,636 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.75 ms. Allocated memory is still 44.6 MB. Free memory was 26.5 MB in the beginning and 25.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 14.3 GB. [2020-10-20 06:33:18,637 INFO L168 Benchmark]: Boogie Preprocessor took 19.75 ms. Allocated memory is still 44.6 MB. Free memory was 25.0 MB in the beginning and 23.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 14.3 GB. [2020-10-20 06:33:18,639 INFO L168 Benchmark]: RCFGBuilder took 210.84 ms. Allocated memory is still 44.6 MB. Free memory was 23.9 MB in the beginning and 15.4 MB in the end (delta: 8.5 MB). Peak memory consumption was 8.5 MB. Max. memory is 14.3 GB. [2020-10-20 06:33:18,640 INFO L168 Benchmark]: BuchiAutomizer took 388.26 ms. Allocated memory was 44.6 MB in the beginning and 47.2 MB in the end (delta: 2.6 MB). Free memory was 15.2 MB in the beginning and 23.0 MB in the end (delta: -7.8 MB). Peak memory consumption was 7.3 MB. Max. memory is 14.3 GB. [2020-10-20 06:33:18,641 INFO L168 Benchmark]: Witness Printer took 78.84 ms. Allocated memory is still 47.2 MB. Free memory was 23.0 MB in the beginning and 21.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 14.3 GB. [2020-10-20 06:33:18,650 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 34.1 MB. Free memory was 19.3 MB in the beginning and 19.3 MB in the end (delta: 29.2 kB). Peak memory consumption was 29.2 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 304.49 ms. Allocated memory was 35.7 MB in the beginning and 44.6 MB in the end (delta: 8.9 MB). Free memory was 12.3 MB in the beginning and 26.5 MB in the end (delta: -14.2 MB). Peak memory consumption was 11.2 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 35.75 ms. Allocated memory is still 44.6 MB. Free memory was 26.5 MB in the beginning and 25.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 19.75 ms. Allocated memory is still 44.6 MB. Free memory was 25.0 MB in the beginning and 23.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 14.3 GB. * RCFGBuilder took 210.84 ms. Allocated memory is still 44.6 MB. Free memory was 23.9 MB in the beginning and 15.4 MB in the end (delta: 8.5 MB). Peak memory consumption was 8.5 MB. Max. memory is 14.3 GB. * BuchiAutomizer took 388.26 ms. Allocated memory was 44.6 MB in the beginning and 47.2 MB in the end (delta: 2.6 MB). Free memory was 15.2 MB in the beginning and 23.0 MB in the end (delta: -7.8 MB). Peak memory consumption was 7.3 MB. Max. memory is 14.3 GB. * Witness Printer took 78.84 ms. Allocated memory is still 47.2 MB. Free memory was 23.0 MB in the beginning and 21.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 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 0.3s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.2s. 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: 16]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {} State at position 1 is {org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7a7975a=0, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@ee68640=0, c=0, x=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 16]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L12] int c, x; [L13] x = __VERIFIER_nondet_int() [L14] c = __VERIFIER_nondet_int() [L15] COND TRUE c == 0 Loop: [L16] COND TRUE x >= 0 [L17] x = x + c End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...