./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-restricted-15/NO_03.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 8d31f386 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_1.5.800.v20200727-1323.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-restricted-15/NO_03.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 89ce36fdd9a6142844b72609f6c752ece8563e1f .................................................................................................................................................................................................................................................................................................................................................. 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 0.2.1-wip.dd.multireach-323-8d31f38 [2021-07-06 18:26:20,454 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-06 18:26:20,456 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-06 18:26:20,478 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-06 18:26:20,479 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-06 18:26:20,480 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-06 18:26:20,481 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-06 18:26:20,484 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-06 18:26:20,486 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-06 18:26:20,487 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-06 18:26:20,487 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-06 18:26:20,488 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-06 18:26:20,489 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-06 18:26:20,491 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-06 18:26:20,492 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-06 18:26:20,493 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-06 18:26:20,494 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-06 18:26:20,497 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-06 18:26:20,498 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-06 18:26:20,501 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-06 18:26:20,503 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-06 18:26:20,506 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-06 18:26:20,507 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-06 18:26:20,508 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-06 18:26:20,510 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-06 18:26:20,513 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-06 18:26:20,513 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-06 18:26:20,513 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-06 18:26:20,514 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-06 18:26:20,515 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-06 18:26:20,515 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-06 18:26:20,516 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-06 18:26:20,516 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-06 18:26:20,517 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-06 18:26:20,518 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-06 18:26:20,518 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-06 18:26:20,518 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-06 18:26:20,518 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-06 18:26:20,519 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-06 18:26:20,519 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-06 18:26:20,520 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-06 18:26:20,521 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-07-06 18:26:20,547 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-06 18:26:20,547 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-06 18:26:20,548 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-06 18:26:20,548 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-06 18:26:20,548 INFO L138 SettingsManager]: * Use SBE=true [2021-07-06 18:26:20,549 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-07-06 18:26:20,549 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-07-06 18:26:20,549 INFO L138 SettingsManager]: * Use old map elimination=false [2021-07-06 18:26:20,549 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-07-06 18:26:20,549 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-07-06 18:26:20,549 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-07-06 18:26:20,549 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-06 18:26:20,550 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-07-06 18:26:20,550 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-06 18:26:20,550 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-06 18:26:20,550 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-07-06 18:26:20,550 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-07-06 18:26:20,550 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-07-06 18:26:20,550 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-06 18:26:20,551 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-07-06 18:26:20,551 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-06 18:26:20,551 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-07-06 18:26:20,551 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-06 18:26:20,551 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-06 18:26:20,551 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-06 18:26:20,551 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-06 18:26:20,552 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-07-06 18:26:20,552 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-07-06 18:26:20,552 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 89ce36fdd9a6142844b72609f6c752ece8563e1f [2021-07-06 18:26:20,748 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-06 18:26:20,761 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-06 18:26:20,762 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-06 18:26:20,763 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-06 18:26:20,763 INFO L275 PluginConnector]: CDTParser initialized [2021-07-06 18:26:20,764 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-restricted-15/NO_03.c [2021-07-06 18:26:20,818 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3a813d03/5510da3cd02243e59ba9f7c15bb470f8/FLAG0ec188a0a [2021-07-06 18:26:21,161 INFO L306 CDTParser]: Found 1 translation units. [2021-07-06 18:26:21,162 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-restricted-15/NO_03.c [2021-07-06 18:26:21,166 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3a813d03/5510da3cd02243e59ba9f7c15bb470f8/FLAG0ec188a0a [2021-07-06 18:26:21,611 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3a813d03/5510da3cd02243e59ba9f7c15bb470f8 [2021-07-06 18:26:21,616 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-06 18:26:21,618 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-07-06 18:26:21,620 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-06 18:26:21,620 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-06 18:26:21,623 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-06 18:26:21,623 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 06:26:21" (1/1) ... [2021-07-06 18:26:21,625 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cb97378 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:26:21, skipping insertion in model container [2021-07-06 18:26:21,625 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 06:26:21" (1/1) ... [2021-07-06 18:26:21,629 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-06 18:26:21,636 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-06 18:26:21,704 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-06 18:26:21,706 INFO L203 MainTranslator]: Completed pre-run [2021-07-06 18:26:21,713 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-06 18:26:21,720 INFO L208 MainTranslator]: Completed translation [2021-07-06 18:26:21,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:26:21 WrapperNode [2021-07-06 18:26:21,720 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-06 18:26:21,721 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-06 18:26:21,721 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-06 18:26:21,721 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-06 18:26:21,725 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:26:21" (1/1) ... [2021-07-06 18:26:21,728 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:26:21" (1/1) ... [2021-07-06 18:26:21,736 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-06 18:26:21,737 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-06 18:26:21,737 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-06 18:26:21,737 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-06 18:26:21,762 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:26:21" (1/1) ... [2021-07-06 18:26:21,762 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:26:21" (1/1) ... [2021-07-06 18:26:21,763 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:26:21" (1/1) ... [2021-07-06 18:26:21,763 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:26:21" (1/1) ... [2021-07-06 18:26:21,764 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:26:21" (1/1) ... [2021-07-06 18:26:21,767 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:26:21" (1/1) ... [2021-07-06 18:26:21,768 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:26:21" (1/1) ... [2021-07-06 18:26:21,769 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-06 18:26:21,774 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-06 18:26:21,774 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-06 18:26:21,774 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-06 18:26:21,775 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:26:21" (1/1) ... [2021-07-06 18:26:21,779 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 18:26:21,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 18:26:21,799 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-07-06 18:26:21,832 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-07-06 18:26:21,851 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-06 18:26:21,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-06 18:26:21,968 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-06 18:26:21,968 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-07-06 18:26:21,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 06:26:21 BoogieIcfgContainer [2021-07-06 18:26:21,969 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-06 18:26:21,971 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-07-06 18:26:21,972 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-07-06 18:26:21,974 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-07-06 18:26:21,974 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 18:26:21,975 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 06.07 06:26:21" (1/3) ... [2021-07-06 18:26:21,976 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7de40d90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.07 06:26:21, skipping insertion in model container [2021-07-06 18:26:21,976 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 18:26:21,976 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:26:21" (2/3) ... [2021-07-06 18:26:21,977 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7de40d90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.07 06:26:21, skipping insertion in model container [2021-07-06 18:26:21,978 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 18:26:21,978 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 06:26:21" (3/3) ... [2021-07-06 18:26:21,979 INFO L389 chiAutomizerObserver]: Analyzing ICFG NO_03.c [2021-07-06 18:26:22,019 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-07-06 18:26:22,019 INFO L360 BuchiCegarLoop]: Hoare is false [2021-07-06 18:26:22,019 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-07-06 18:26:22,020 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-06 18:26:22,020 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-06 18:26:22,020 INFO L364 BuchiCegarLoop]: Difference is false [2021-07-06 18:26:22,020 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-06 18:26:22,020 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-07-06 18:26:22,028 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 18:26:22,038 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-07-06 18:26:22,038 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 18:26:22,038 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 18:26:22,041 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-07-06 18:26:22,041 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-07-06 18:26:22,042 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-07-06 18:26:22,042 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 18:26:22,043 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-07-06 18:26:22,043 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 18:26:22,043 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 18:26:22,043 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-07-06 18:26:22,044 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-07-06 18:26:22,047 INFO L791 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_~i~0, main_~j~0;havoc main_~i~0;havoc main_~j~0;main_~i~0 := 0; 8#L10-2true [2021-07-06 18:26:22,048 INFO L793 eck$LassoCheckResult]: Loop: 8#L10-2true assume !!(main_~i~0 < 100);main_~j~0 := 0; 3#L12-2true assume !(main_~j~0 < 1); 10#L12-3true main_~i~0 := main_~i~0; 8#L10-2true [2021-07-06 18:26:22,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 18:26:22,051 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2021-07-06 18:26:22,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 18:26:22,057 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455208642] [2021-07-06 18:26:22,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 18:26:22,058 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 18:26:22,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:26:22,100 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:26:22,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:26:22,102 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:26:22,110 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 18:26:22,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 18:26:22,112 INFO L82 PathProgramCache]: Analyzing trace with hash 39951, now seen corresponding path program 1 times [2021-07-06 18:26:22,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 18:26:22,113 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116551371] [2021-07-06 18:26:22,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 18:26:22,113 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 18:26:22,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 18:26:22,139 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:26:22,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 18:26:22,153 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:26:22,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 18:26:22,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 18:26:22,154 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 18:26:22,155 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116551371] [2021-07-06 18:26:22,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116551371] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 18:26:22,155 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 18:26:22,155 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-06 18:26:22,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928945143] [2021-07-06 18:26:22,164 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-07-06 18:26:22,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 18:26:22,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-06 18:26:22,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 18:26:22,175 INFO L87 Difference]: Start difference. First operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 18:26:22,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 18:26:22,185 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2021-07-06 18:26:22,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-06 18:26:22,186 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 10 transitions. [2021-07-06 18:26:22,187 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-07-06 18:26:22,188 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 5 states and 6 transitions. [2021-07-06 18:26:22,189 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2021-07-06 18:26:22,189 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2021-07-06 18:26:22,189 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 6 transitions. [2021-07-06 18:26:22,189 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-07-06 18:26:22,190 INFO L681 BuchiCegarLoop]: Abstraction has 5 states and 6 transitions. [2021-07-06 18:26:22,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states and 6 transitions. [2021-07-06 18:26:22,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2021-07-06 18:26:22,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 18:26:22,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 6 transitions. [2021-07-06 18:26:22,209 INFO L704 BuchiCegarLoop]: Abstraction has 5 states and 6 transitions. [2021-07-06 18:26:22,209 INFO L587 BuchiCegarLoop]: Abstraction has 5 states and 6 transitions. [2021-07-06 18:26:22,209 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-07-06 18:26:22,209 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 5 states and 6 transitions. [2021-07-06 18:26:22,209 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-07-06 18:26:22,209 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 18:26:22,210 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 18:26:22,210 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-07-06 18:26:22,210 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-07-06 18:26:22,210 INFO L791 eck$LassoCheckResult]: Stem: 28#ULTIMATE.startENTRY havoc main_#res;havoc main_~i~0, main_~j~0;havoc main_~i~0;havoc main_~j~0;main_~i~0 := 0; 29#L10-2 [2021-07-06 18:26:22,210 INFO L793 eck$LassoCheckResult]: Loop: 29#L10-2 assume !!(main_~i~0 < 100);main_~j~0 := 0; 26#L12-2 assume !!(main_~j~0 < 1);main_~j~0 := 1 + main_~j~0; 27#L12-2 assume !(main_~j~0 < 1); 30#L12-3 main_~i~0 := main_~i~0; 29#L10-2 [2021-07-06 18:26:22,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 18:26:22,211 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 2 times [2021-07-06 18:26:22,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 18:26:22,220 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943158563] [2021-07-06 18:26:22,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 18:26:22,221 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 18:26:22,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:26:22,224 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:26:22,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:26:22,228 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:26:22,229 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 18:26:22,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 18:26:22,229 INFO L82 PathProgramCache]: Analyzing trace with hash 1240240, now seen corresponding path program 1 times [2021-07-06 18:26:22,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 18:26:22,232 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508577170] [2021-07-06 18:26:22,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 18:26:22,233 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 18:26:22,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:26:22,240 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:26:22,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:26:22,255 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:26:22,256 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 18:26:22,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 18:26:22,256 INFO L82 PathProgramCache]: Analyzing trace with hash 29869391, now seen corresponding path program 1 times [2021-07-06 18:26:22,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 18:26:22,257 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438502801] [2021-07-06 18:26:22,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 18:26:22,257 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 18:26:22,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:26:22,261 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:26:22,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:26:22,264 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:26:22,265 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 18:26:22,295 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:26:22,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-07-06 18:26:22,318 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:26:22,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 18:26:22,331 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 06.07 06:26:22 BoogieIcfgContainer [2021-07-06 18:26:22,331 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-07-06 18:26:22,332 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-07-06 18:26:22,332 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-07-06 18:26:22,332 INFO L275 PluginConnector]: Witness Printer initialized [2021-07-06 18:26:22,332 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 06:26:21" (3/4) ... [2021-07-06 18:26:22,334 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-07-06 18:26:22,354 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-07-06 18:26:22,354 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-07-06 18:26:22,355 INFO L168 Benchmark]: Toolchain (without parser) took 737.05 ms. Allocated memory is still 73.4 MB. Free memory was 56.6 MB in the beginning and 43.5 MB in the end (delta: 13.1 MB). Peak memory consumption was 12.9 MB. Max. memory is 16.1 GB. [2021-07-06 18:26:22,355 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 73.4 MB. Free memory is still 54.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-07-06 18:26:22,356 INFO L168 Benchmark]: CACSL2BoogieTranslator took 100.70 ms. Allocated memory is still 73.4 MB. Free memory was 56.5 MB in the beginning and 48.2 MB in the end (delta: 8.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-07-06 18:26:22,356 INFO L168 Benchmark]: Boogie Procedure Inliner took 15.19 ms. Allocated memory is still 73.4 MB. Free memory was 48.2 MB in the beginning and 47.0 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-07-06 18:26:22,359 INFO L168 Benchmark]: Boogie Preprocessor took 36.17 ms. Allocated memory is still 73.4 MB. Free memory was 47.0 MB in the beginning and 57.3 MB in the end (delta: -10.4 MB). Peak memory consumption was 2.7 MB. Max. memory is 16.1 GB. [2021-07-06 18:26:22,360 INFO L168 Benchmark]: RCFGBuilder took 195.88 ms. Allocated memory is still 73.4 MB. Free memory was 57.3 MB in the beginning and 48.7 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-07-06 18:26:22,363 INFO L168 Benchmark]: BuchiAutomizer took 360.04 ms. Allocated memory is still 73.4 MB. Free memory was 48.7 MB in the beginning and 45.2 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.9 MB. Max. memory is 16.1 GB. [2021-07-06 18:26:22,364 INFO L168 Benchmark]: Witness Printer took 22.36 ms. Allocated memory is still 73.4 MB. Free memory was 44.9 MB in the beginning and 43.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-06 18:26:22,366 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 73.4 MB. Free memory is still 54.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 100.70 ms. Allocated memory is still 73.4 MB. Free memory was 56.5 MB in the beginning and 48.2 MB in the end (delta: 8.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 15.19 ms. Allocated memory is still 73.4 MB. Free memory was 48.2 MB in the beginning and 47.0 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 36.17 ms. Allocated memory is still 73.4 MB. Free memory was 47.0 MB in the beginning and 57.3 MB in the end (delta: -10.4 MB). Peak memory consumption was 2.7 MB. Max. memory is 16.1 GB. * RCFGBuilder took 195.88 ms. Allocated memory is still 73.4 MB. Free memory was 57.3 MB in the beginning and 48.7 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 360.04 ms. Allocated memory is still 73.4 MB. Free memory was 48.7 MB in the beginning and 45.2 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.9 MB. Max. memory is 16.1 GB. * Witness Printer took 22.36 ms. Allocated memory is still 73.4 MB. Free memory was 44.9 MB in the beginning and 43.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * 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 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.3s and 2 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 1. Minimization of nondet autom 0. Automata minimization 6.1ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 5 states and ocurred in iteration 1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 8 SDtfs, 0 SDslu, 5 SDs, 0 SdLazy, 4 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.2ms Time LassoAnalysisResults: nont1 unkn0 SFLI1 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: 10]: 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 {\result=0, i=0, j=1} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 10]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L6] int i; [L7] int j; [L8] i = 0 Loop: [L10] COND TRUE i < 100 [L11] j = 0 [L12] COND TRUE j < 1 [L13] j = j+1 [L12] COND FALSE !(j < 1) [L15] i = i+0 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-07-06 18:26:22,389 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...