./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-memory-linkedlists/cll_traverse-alloca.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_00471f6c-2123-4a10-a90a-6b4390266549/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_00471f6c-2123-4a10-a90a-6b4390266549/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_00471f6c-2123-4a10-a90a-6b4390266549/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_00471f6c-2123-4a10-a90a-6b4390266549/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-memory-linkedlists/cll_traverse-alloca.i -s /tmp/vcloud-vcloud-master/worker/run_dir_00471f6c-2123-4a10-a90a-6b4390266549/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_00471f6c-2123-4a10-a90a-6b4390266549/bin/uautomizer --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 a2a51f996e4cf34954505c04e8fa9e53d244d46a ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 0.2.0-a4ecdab [2020-11-29 22:51:14,438 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 22:51:14,440 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 22:51:14,485 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 22:51:14,486 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 22:51:14,491 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 22:51:14,495 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 22:51:14,510 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 22:51:14,512 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 22:51:14,518 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 22:51:14,519 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 22:51:14,521 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 22:51:14,522 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 22:51:14,525 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 22:51:14,527 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 22:51:14,529 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 22:51:14,531 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 22:51:14,532 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 22:51:14,537 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 22:51:14,545 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 22:51:14,547 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 22:51:14,548 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 22:51:14,551 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 22:51:14,552 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 22:51:14,560 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 22:51:14,561 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 22:51:14,561 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 22:51:14,563 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 22:51:14,564 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 22:51:14,565 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 22:51:14,566 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 22:51:14,567 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 22:51:14,569 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 22:51:14,571 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 22:51:14,572 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 22:51:14,572 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 22:51:14,573 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 22:51:14,573 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 22:51:14,574 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 22:51:14,575 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 22:51:14,577 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 22:51:14,579 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_00471f6c-2123-4a10-a90a-6b4390266549/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-11-29 22:51:14,622 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 22:51:14,623 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 22:51:14,625 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 22:51:14,625 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 22:51:14,625 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 22:51:14,626 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-29 22:51:14,626 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-29 22:51:14,626 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-29 22:51:14,626 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-29 22:51:14,627 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-29 22:51:14,628 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-29 22:51:14,628 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 22:51:14,628 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 22:51:14,629 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 22:51:14,629 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 22:51:14,629 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-29 22:51:14,630 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-29 22:51:14,630 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-29 22:51:14,630 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 22:51:14,630 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-29 22:51:14,631 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 22:51:14,631 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-29 22:51:14,631 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 22:51:14,631 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 22:51:14,632 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-29 22:51:14,632 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 22:51:14,632 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 22:51:14,633 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 22:51:14,633 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-29 22:51:14,636 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-29 22:51:14,636 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:/tmp/vcloud-vcloud-master/worker/run_dir_00471f6c-2123-4a10-a90a-6b4390266549/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_00471f6c-2123-4a10-a90a-6b4390266549/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a2a51f996e4cf34954505c04e8fa9e53d244d46a [2020-11-29 22:51:14,916 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 22:51:14,937 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 22:51:14,940 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 22:51:14,942 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 22:51:14,944 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 22:51:14,946 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_00471f6c-2123-4a10-a90a-6b4390266549/bin/uautomizer/../../sv-benchmarks/c/termination-memory-linkedlists/cll_traverse-alloca.i [2020-11-29 22:51:15,023 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_00471f6c-2123-4a10-a90a-6b4390266549/bin/uautomizer/data/07e0afed3/acfba5d29e33426aa627b88b34d8ac37/FLAGc433c119c [2020-11-29 22:51:15,613 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 22:51:15,614 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_00471f6c-2123-4a10-a90a-6b4390266549/sv-benchmarks/c/termination-memory-linkedlists/cll_traverse-alloca.i [2020-11-29 22:51:15,627 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_00471f6c-2123-4a10-a90a-6b4390266549/bin/uautomizer/data/07e0afed3/acfba5d29e33426aa627b88b34d8ac37/FLAGc433c119c [2020-11-29 22:51:15,911 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_00471f6c-2123-4a10-a90a-6b4390266549/bin/uautomizer/data/07e0afed3/acfba5d29e33426aa627b88b34d8ac37 [2020-11-29 22:51:15,919 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 22:51:15,921 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 22:51:15,923 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 22:51:15,923 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 22:51:15,926 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 22:51:15,927 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 10:51:15" (1/1) ... [2020-11-29 22:51:15,929 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fdab76e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:51:15, skipping insertion in model container [2020-11-29 22:51:15,929 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 10:51:15" (1/1) ... [2020-11-29 22:51:15,939 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 22:51:15,978 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 22:51:16,334 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 22:51:16,344 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 22:51:16,403 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 22:51:16,457 INFO L208 MainTranslator]: Completed translation [2020-11-29 22:51:16,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:51:16 WrapperNode [2020-11-29 22:51:16,457 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 22:51:16,458 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 22:51:16,458 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 22:51:16,459 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 22:51:16,472 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:51:16" (1/1) ... [2020-11-29 22:51:16,498 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:51:16" (1/1) ... [2020-11-29 22:51:16,515 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 22:51:16,516 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 22:51:16,516 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 22:51:16,516 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 22:51:16,525 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:51:16" (1/1) ... [2020-11-29 22:51:16,525 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:51:16" (1/1) ... [2020-11-29 22:51:16,528 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:51:16" (1/1) ... [2020-11-29 22:51:16,529 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:51:16" (1/1) ... [2020-11-29 22:51:16,535 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:51:16" (1/1) ... [2020-11-29 22:51:16,538 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:51:16" (1/1) ... [2020-11-29 22:51:16,540 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:51:16" (1/1) ... [2020-11-29 22:51:16,543 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 22:51:16,544 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 22:51:16,544 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 22:51:16,544 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 22:51:16,545 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:51:16" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_00471f6c-2123-4a10-a90a-6b4390266549/bin/uautomizer/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 [2020-11-29 22:51:16,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-29 22:51:16,619 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-29 22:51:16,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-29 22:51:16,619 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-29 22:51:16,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 22:51:16,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 22:51:17,061 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 22:51:17,061 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-29 22:51:17,063 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:51:17 BoogieIcfgContainer [2020-11-29 22:51:17,063 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 22:51:17,064 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-29 22:51:17,064 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-29 22:51:17,073 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-29 22:51:17,074 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 22:51:17,074 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 10:51:15" (1/3) ... [2020-11-29 22:51:17,075 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@809a183 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 10:51:17, skipping insertion in model container [2020-11-29 22:51:17,076 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 22:51:17,076 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:51:16" (2/3) ... [2020-11-29 22:51:17,076 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@809a183 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 10:51:17, skipping insertion in model container [2020-11-29 22:51:17,076 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 22:51:17,077 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:51:17" (3/3) ... [2020-11-29 22:51:17,078 INFO L373 chiAutomizerObserver]: Analyzing ICFG cll_traverse-alloca.i [2020-11-29 22:51:17,135 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-29 22:51:17,135 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-29 22:51:17,136 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-29 22:51:17,136 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 22:51:17,136 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 22:51:17,136 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-29 22:51:17,136 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 22:51:17,137 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-29 22:51:17,150 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states. [2020-11-29 22:51:17,167 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 3 [2020-11-29 22:51:17,168 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 22:51:17,168 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 22:51:17,174 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-11-29 22:51:17,174 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-29 22:51:17,174 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-29 22:51:17,174 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states. [2020-11-29 22:51:17,177 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 3 [2020-11-29 22:51:17,177 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 22:51:17,177 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 22:51:17,178 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-11-29 22:51:17,178 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-29 22:51:17,185 INFO L794 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 3#L-1true havoc main_#res;havoc main_#t~nondet6, main_#t~ret7.base, main_#t~ret7.offset, main_~n~0, main_~head~1.base, main_~head~1.offset;main_~n~0 := main_#t~nondet6;havoc main_#t~nondet6;init_cll_#in~n := main_~n~0;havoc init_cll_#res.base, init_cll_#res.offset;havoc init_cll_#t~malloc2.base, init_cll_#t~malloc2.offset, init_cll_#t~malloc4.base, init_cll_#t~malloc4.offset, init_cll_#t~post3, init_cll_~i~0, init_cll_~next_node~0.base, init_cll_~next_node~0.offset, init_cll_~n, init_cll_~head~0.base, init_cll_~head~0.offset, init_cll_~curr~0.base, init_cll_~curr~0.offset;init_cll_~n := init_cll_#in~n;havoc init_cll_~head~0.base, init_cll_~head~0.offset;call init_cll_#t~malloc2.base, init_cll_#t~malloc2.offset := #Ultimate.allocOnHeap(12);init_cll_~curr~0.base, init_cll_~curr~0.offset := init_cll_#t~malloc2.base, init_cll_#t~malloc2.offset;call write~int(0, init_cll_~curr~0.base, init_cll_~curr~0.offset, 4);init_cll_~head~0.base, init_cll_~head~0.offset := init_cll_~curr~0.base, init_cll_~curr~0.offset;init_cll_~i~0 := 1; 12#L552-3true [2020-11-29 22:51:17,185 INFO L796 eck$LassoCheckResult]: Loop: 12#L552-3true assume !!(init_cll_~i~0 < init_cll_~n);call init_cll_#t~malloc4.base, init_cll_#t~malloc4.offset := #Ultimate.allocOnHeap(12);init_cll_~next_node~0.base, init_cll_~next_node~0.offset := init_cll_#t~malloc4.base, init_cll_#t~malloc4.offset;call write~int(init_cll_~i~0, init_cll_~next_node~0.base, init_cll_~next_node~0.offset, 4);call write~$Pointer$(init_cll_~next_node~0.base, init_cll_~next_node~0.offset, init_cll_~curr~0.base, 4 + init_cll_~curr~0.offset, 8);init_cll_~curr~0.base, init_cll_~curr~0.offset := init_cll_~next_node~0.base, init_cll_~next_node~0.offset; 10#L552-2true init_cll_#t~post3 := init_cll_~i~0;init_cll_~i~0 := 1 + init_cll_#t~post3;havoc init_cll_#t~post3; 12#L552-3true [2020-11-29 22:51:17,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:51:17,198 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2020-11-29 22:51:17,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:51:17,209 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287716486] [2020-11-29 22:51:17,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:51:17,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:51:17,329 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:51:17,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:51:17,364 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:51:17,387 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:51:17,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:51:17,391 INFO L82 PathProgramCache]: Analyzing trace with hash 1283, now seen corresponding path program 1 times [2020-11-29 22:51:17,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:51:17,392 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049796120] [2020-11-29 22:51:17,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:51:17,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:51:17,426 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:51:17,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:51:17,458 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:51:17,469 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:51:17,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:51:17,472 INFO L82 PathProgramCache]: Analyzing trace with hash 925765, now seen corresponding path program 1 times [2020-11-29 22:51:17,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:51:17,473 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729233686] [2020-11-29 22:51:17,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:51:17,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:51:17,537 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:51:17,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:51:17,563 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:51:17,569 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:51:17,928 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 82 [2020-11-29 22:51:18,007 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-29 22:51:18,131 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2020-11-29 22:51:18,133 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:51:18,141 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-29 22:51:18,290 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2020-11-29 22:51:18,291 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:51:18,293 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-11-29 22:51:18,293 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:156, output treesize:158 [2020-11-29 22:51:18,435 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2020-11-29 22:51:18,640 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 68 [2020-11-29 22:51:18,722 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 22:51:18,722 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 22:51:18,723 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 22:51:18,723 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 22:51:18,724 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 22:51:18,724 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:51:18,724 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 22:51:18,725 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 22:51:18,725 INFO L133 ssoRankerPreferences]: Filename of dumped script: cll_traverse-alloca.i_Iteration1_Lasso [2020-11-29 22:51:18,725 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 22:51:18,725 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 22:51:18,759 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:51:18,767 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:51:18,774 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:51:18,777 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:51:18,781 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:51:18,785 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:51:18,788 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:51:19,151 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2020-11-29 22:51:19,152 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:51:19,157 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:51:19,162 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:51:19,167 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:51:19,170 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 22:51:19,769 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 22:51:19,774 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_00471f6c-2123-4a10-a90a-6b4390266549/bin/uautomizer/z3 Starting monitored process 2 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 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:51:19,785 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:51:19,787 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:51:19,787 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 22:51:19,787 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:51:19,787 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:51:19,788 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:51:19,790 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 22:51:19,790 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 22:51:19,792 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_00471f6c-2123-4a10-a90a-6b4390266549/bin/uautomizer/z3 Starting monitored process 3 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 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:51:19,822 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:51:19,824 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:51:19,824 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 22:51:19,824 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:51:19,824 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:51:19,824 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:51:19,825 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 22:51:19,825 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 22:51:19,828 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_00471f6c-2123-4a10-a90a-6b4390266549/bin/uautomizer/z3 Starting monitored process 4 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 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:51:19,852 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:51:19,853 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:51:19,853 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 22:51:19,854 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:51:19,854 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:51:19,854 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:51:19,855 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 22:51:19,855 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 22:51:19,861 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_00471f6c-2123-4a10-a90a-6b4390266549/bin/uautomizer/z3 Starting monitored process 5 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 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:51:19,883 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:51:19,884 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:51:19,884 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 22:51:19,884 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:51:19,884 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:51:19,884 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:51:19,885 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 22:51:19,885 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 22:51:19,886 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_00471f6c-2123-4a10-a90a-6b4390266549/bin/uautomizer/z3 Starting monitored process 6 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 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:51:19,912 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:51:19,914 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:51:19,914 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:51:19,914 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:51:19,914 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:51:19,918 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 22:51:19,918 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 22:51:19,924 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_00471f6c-2123-4a10-a90a-6b4390266549/bin/uautomizer/z3 Starting monitored process 7 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 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:51:19,966 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:51:19,968 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:51:19,968 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 22:51:19,968 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:51:19,968 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:51:19,968 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:51:19,969 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 22:51:19,969 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 22:51:19,970 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_00471f6c-2123-4a10-a90a-6b4390266549/bin/uautomizer/z3 Starting monitored process 8 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 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:51:19,992 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:51:19,993 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:51:19,993 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 22:51:19,993 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:51:19,993 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:51:19,994 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:51:19,994 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 22:51:19,994 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 22:51:19,996 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_00471f6c-2123-4a10-a90a-6b4390266549/bin/uautomizer/z3 Starting monitored process 9 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 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:51:20,020 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:51:20,022 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:51:20,022 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:51:20,022 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:51:20,022 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:51:20,025 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 22:51:20,025 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 22:51:20,030 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_00471f6c-2123-4a10-a90a-6b4390266549/bin/uautomizer/z3 Starting monitored process 10 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 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:51:20,060 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:51:20,062 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:51:20,062 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 22:51:20,062 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:51:20,062 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:51:20,062 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:51:20,063 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 22:51:20,063 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 22:51:20,069 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_00471f6c-2123-4a10-a90a-6b4390266549/bin/uautomizer/z3 Starting monitored process 11 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 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:51:20,093 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:51:20,094 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:51:20,094 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:51:20,094 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:51:20,095 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:51:20,105 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 22:51:20,105 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 22:51:20,119 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_00471f6c-2123-4a10-a90a-6b4390266549/bin/uautomizer/z3 Starting monitored process 12 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 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:51:20,142 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:51:20,145 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:51:20,145 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:51:20,145 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:51:20,145 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:51:20,151 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 22:51:20,152 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 22:51:20,158 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_00471f6c-2123-4a10-a90a-6b4390266549/bin/uautomizer/z3 Starting monitored process 13 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 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:51:20,180 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:51:20,181 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:51:20,182 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 22:51:20,182 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:51:20,182 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:51:20,182 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:51:20,183 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 22:51:20,183 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 22:51:20,186 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_00471f6c-2123-4a10-a90a-6b4390266549/bin/uautomizer/z3 Starting monitored process 14 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 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:51:20,213 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:51:20,214 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:51:20,214 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:51:20,215 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:51:20,215 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:51:20,218 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 22:51:20,218 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 22:51:20,227 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_00471f6c-2123-4a10-a90a-6b4390266549/bin/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 22:51:20,287 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:51:20,289 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:51:20,289 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:51:20,289 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:51:20,290 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:51:20,293 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 22:51:20,293 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 22:51:20,303 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_00471f6c-2123-4a10-a90a-6b4390266549/bin/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 22:51:20,352 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:51:20,353 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:51:20,353 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 22:51:20,353 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:51:20,354 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:51:20,354 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:51:20,355 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 22:51:20,355 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:51:20,357 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_00471f6c-2123-4a10-a90a-6b4390266549/bin/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 22:51:20,396 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:51:20,398 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:51:20,398 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:51:20,398 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:51:20,398 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:51:20,405 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 22:51:20,405 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:51:20,409 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_00471f6c-2123-4a10-a90a-6b4390266549/bin/uautomizer/z3 Starting monitored process 18 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 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:51:20,431 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:51:20,432 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:51:20,432 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 22:51:20,432 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:51:20,433 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:51:20,433 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:51:20,434 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 22:51:20,434 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 22:51:20,436 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_00471f6c-2123-4a10-a90a-6b4390266549/bin/uautomizer/z3 Starting monitored process 19 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 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:51:20,457 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 22:51:20,459 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:51:20,459 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:51:20,459 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:51:20,459 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:51:20,463 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 22:51:20,466 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 22:51:20,473 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 22:51:20,610 INFO L443 ModelExtractionUtils]: Simplification made 9 calls to the SMT solver. [2020-11-29 22:51:20,610 INFO L444 ModelExtractionUtils]: 4 out of 16 variables were initially zero. Simplification set additionally 9 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_00471f6c-2123-4a10-a90a-6b4390266549/bin/uautomizer/z3 Starting monitored process 20 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 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:51:20,663 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 22:51:20,706 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-11-29 22:51:20,707 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 22:51:20,707 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_init_cll_~n, ULTIMATE.start_init_cll_~i~0) = 1*ULTIMATE.start_init_cll_~n - 1*ULTIMATE.start_init_cll_~i~0 Supporting invariants [] [2020-11-29 22:51:20,746 INFO L297 tatePredicateManager]: 3 out of 3 supporting invariants were superfluous and have been removed [2020-11-29 22:51:20,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:51:20,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:51:20,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 22:51:20,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:51:20,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:51:20,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 22:51:20,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:51:20,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:51:20,844 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-11-29 22:51:20,845 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states. Second operand 3 states. [2020-11-29 22:51:20,892 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states.. Second operand 3 states. Result 27 states and 36 transitions. Complement of second has 7 states. [2020-11-29 22:51:20,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-29 22:51:20,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 22:51:20,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 22 transitions. [2020-11-29 22:51:20,898 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 2 letters. Loop has 2 letters. [2020-11-29 22:51:20,899 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 22:51:20,899 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 4 letters. Loop has 2 letters. [2020-11-29 22:51:20,899 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 22:51:20,900 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 2 letters. Loop has 4 letters. [2020-11-29 22:51:20,900 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 22:51:20,901 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 36 transitions. [2020-11-29 22:51:20,908 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-29 22:51:20,910 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 8 states and 10 transitions. [2020-11-29 22:51:20,911 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2020-11-29 22:51:20,912 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2020-11-29 22:51:20,912 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 10 transitions. [2020-11-29 22:51:20,912 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 22:51:20,913 INFO L691 BuchiCegarLoop]: Abstraction has 8 states and 10 transitions. [2020-11-29 22:51:20,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 10 transitions. [2020-11-29 22:51:20,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2020-11-29 22:51:20,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-11-29 22:51:20,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 10 transitions. [2020-11-29 22:51:20,937 INFO L714 BuchiCegarLoop]: Abstraction has 8 states and 10 transitions. [2020-11-29 22:51:20,937 INFO L594 BuchiCegarLoop]: Abstraction has 8 states and 10 transitions. [2020-11-29 22:51:20,937 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-29 22:51:20,937 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 10 transitions. [2020-11-29 22:51:20,937 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-29 22:51:20,938 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 22:51:20,938 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 22:51:20,938 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2020-11-29 22:51:20,938 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-11-29 22:51:20,940 INFO L794 eck$LassoCheckResult]: Stem: 93#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 89#L-1 havoc main_#res;havoc main_#t~nondet6, main_#t~ret7.base, main_#t~ret7.offset, main_~n~0, main_~head~1.base, main_~head~1.offset;main_~n~0 := main_#t~nondet6;havoc main_#t~nondet6;init_cll_#in~n := main_~n~0;havoc init_cll_#res.base, init_cll_#res.offset;havoc init_cll_#t~malloc2.base, init_cll_#t~malloc2.offset, init_cll_#t~malloc4.base, init_cll_#t~malloc4.offset, init_cll_#t~post3, init_cll_~i~0, init_cll_~next_node~0.base, init_cll_~next_node~0.offset, init_cll_~n, init_cll_~head~0.base, init_cll_~head~0.offset, init_cll_~curr~0.base, init_cll_~curr~0.offset;init_cll_~n := init_cll_#in~n;havoc init_cll_~head~0.base, init_cll_~head~0.offset;call init_cll_#t~malloc2.base, init_cll_#t~malloc2.offset := #Ultimate.allocOnHeap(12);init_cll_~curr~0.base, init_cll_~curr~0.offset := init_cll_#t~malloc2.base, init_cll_#t~malloc2.offset;call write~int(0, init_cll_~curr~0.base, init_cll_~curr~0.offset, 4);init_cll_~head~0.base, init_cll_~head~0.offset := init_cll_~curr~0.base, init_cll_~curr~0.offset;init_cll_~i~0 := 1; 90#L552-3 assume !(init_cll_~i~0 < init_cll_~n); 91#L552-4 call write~$Pointer$(init_cll_~head~0.base, init_cll_~head~0.offset, init_cll_~curr~0.base, 4 + init_cll_~curr~0.offset, 8);init_cll_#res.base, init_cll_#res.offset := init_cll_~head~0.base, init_cll_~head~0.offset; 92#L559 main_#t~ret7.base, main_#t~ret7.offset := init_cll_#res.base, init_cll_#res.offset;main_~head~1.base, main_~head~1.offset := main_#t~ret7.base, main_#t~ret7.offset;havoc main_#t~ret7.base, main_#t~ret7.offset;traverse_#in~head.base, traverse_#in~head.offset := main_~head~1.base, main_~head~1.offset;havoc traverse_#t~mem5.base, traverse_#t~mem5.offset, traverse_~head.base, traverse_~head.offset, traverse_~curr~1.base, traverse_~curr~1.offset;traverse_~head.base, traverse_~head.offset := traverse_#in~head.base, traverse_#in~head.offset;traverse_~curr~1.base, traverse_~curr~1.offset := traverse_~head.base, traverse_~head.offset; 94#L564-2 [2020-11-29 22:51:20,940 INFO L796 eck$LassoCheckResult]: Loop: 94#L564-2 assume !!(traverse_~curr~1.base != 0 || traverse_~curr~1.offset != 0);call traverse_#t~mem5.base, traverse_#t~mem5.offset := read~$Pointer$(traverse_~curr~1.base, 4 + traverse_~curr~1.offset, 8);traverse_~curr~1.base, traverse_~curr~1.offset := traverse_#t~mem5.base, traverse_#t~mem5.offset;havoc traverse_#t~mem5.base, traverse_#t~mem5.offset; 94#L564-2 [2020-11-29 22:51:20,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:51:20,940 INFO L82 PathProgramCache]: Analyzing trace with hash 28696935, now seen corresponding path program 1 times [2020-11-29 22:51:20,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:51:20,941 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28119382] [2020-11-29 22:51:20,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:51:20,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:51:20,970 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:51:20,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:51:20,991 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:51:20,995 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:51:20,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:51:20,996 INFO L82 PathProgramCache]: Analyzing trace with hash 58, now seen corresponding path program 1 times [2020-11-29 22:51:20,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:51:21,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056982155] [2020-11-29 22:51:21,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:51:21,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:51:21,007 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:51:21,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:51:21,009 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:51:21,011 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:51:21,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:51:21,012 INFO L82 PathProgramCache]: Analyzing trace with hash 889605012, now seen corresponding path program 1 times [2020-11-29 22:51:21,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:51:21,012 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790100385] [2020-11-29 22:51:21,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:51:21,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:51:21,037 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:51:21,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:51:21,057 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:51:21,062 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:51:21,642 WARN L193 SmtUtils]: Spent 528.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 110 [2020-11-29 22:51:21,662 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-29 22:51:21,820 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-11-29 22:51:21,821 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:51:21,835 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-29 22:51:21,981 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-11-29 22:51:21,982 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 22:51:21,983 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-11-29 22:51:21,984 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:183, output treesize:159 [2020-11-29 22:51:22,137 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-11-29 22:51:22,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.11 10:51:22 BoogieIcfgContainer [2020-11-29 22:51:22,162 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-29 22:51:22,163 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 22:51:22,163 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 22:51:22,163 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 22:51:22,163 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:51:17" (3/4) ... [2020-11-29 22:51:22,166 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2020-11-29 22:51:22,210 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_00471f6c-2123-4a10-a90a-6b4390266549/bin/uautomizer/witness.graphml [2020-11-29 22:51:22,211 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 22:51:22,213 INFO L168 Benchmark]: Toolchain (without parser) took 6290.96 ms. Allocated memory was 79.7 MB in the beginning and 132.1 MB in the end (delta: 52.4 MB). Free memory was 47.7 MB in the beginning and 93.1 MB in the end (delta: -45.4 MB). Peak memory consumption was 6.2 MB. Max. memory is 16.1 GB. [2020-11-29 22:51:22,213 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 79.7 MB. Free memory was 39.8 MB in the beginning and 39.7 MB in the end (delta: 38.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 22:51:22,214 INFO L168 Benchmark]: CACSL2BoogieTranslator took 534.71 ms. Allocated memory was 79.7 MB in the beginning and 104.9 MB in the end (delta: 25.2 MB). Free memory was 47.5 MB in the beginning and 72.9 MB in the end (delta: -25.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 22:51:22,214 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.21 ms. Allocated memory is still 104.9 MB. Free memory was 72.9 MB in the beginning and 70.8 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 22:51:22,215 INFO L168 Benchmark]: Boogie Preprocessor took 26.89 ms. Allocated memory is still 104.9 MB. Free memory was 70.8 MB in the beginning and 69.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 22:51:22,216 INFO L168 Benchmark]: RCFGBuilder took 519.66 ms. Allocated memory is still 104.9 MB. Free memory was 69.6 MB in the beginning and 54.6 MB in the end (delta: 14.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-29 22:51:22,216 INFO L168 Benchmark]: BuchiAutomizer took 5098.23 ms. Allocated memory was 104.9 MB in the beginning and 132.1 MB in the end (delta: 27.3 MB). Free memory was 54.6 MB in the beginning and 95.1 MB in the end (delta: -40.5 MB). Peak memory consumption was 49.4 MB. Max. memory is 16.1 GB. [2020-11-29 22:51:22,217 INFO L168 Benchmark]: Witness Printer took 47.96 ms. Allocated memory is still 132.1 MB. Free memory was 95.1 MB in the beginning and 93.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 22:51:22,226 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 79.7 MB. Free memory was 39.8 MB in the beginning and 39.7 MB in the end (delta: 38.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 534.71 ms. Allocated memory was 79.7 MB in the beginning and 104.9 MB in the end (delta: 25.2 MB). Free memory was 47.5 MB in the beginning and 72.9 MB in the end (delta: -25.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 57.21 ms. Allocated memory is still 104.9 MB. Free memory was 72.9 MB in the beginning and 70.8 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.89 ms. Allocated memory is still 104.9 MB. Free memory was 70.8 MB in the beginning and 69.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 519.66 ms. Allocated memory is still 104.9 MB. Free memory was 69.6 MB in the beginning and 54.6 MB in the end (delta: 14.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 5098.23 ms. Allocated memory was 104.9 MB in the beginning and 132.1 MB in the end (delta: 27.3 MB). Free memory was 54.6 MB in the beginning and 95.1 MB in the end (delta: -40.5 MB). Peak memory consumption was 49.4 MB. Max. memory is 16.1 GB. * Witness Printer took 47.96 ms. Allocated memory is still 132.1 MB. Free memory was 95.1 MB in the beginning and 93.1 MB in the end (delta: 2.0 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 (0 trivial, 1 deterministic, 0 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function n + -1 * i and consists of 5 locations. The remainder module has 8 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 5.0s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 4.7s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 8 states and ocurred in iteration 1. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 9 SDtfs, 9 SDslu, 14 SDs, 0 SdLazy, 6 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital263 mio100 ax100 hnf100 lsp97 ukn43 mio100 lsp27 div100 bol100 ite100 ukn100 eq177 hnf92 smp100 dnf172 smp93 tf100 neg95 sie120 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 14ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: 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: 564]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=5875} State at position 1 is {i=1, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@12f4666=0, \result=0, NULL=5875, next_node=0, \result=5874, next_node=0, head=5874, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@68f49425=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@12f4666=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@635c57eb=5874, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@ef9ce41=0, head=0, head=5874, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@206dc0d5=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@206dc0d5=0, curr=0, \old(n)=0, n=0, head=5874, n=0, head=0, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5be44988=0, head=0, head=5874, curr=5874, NULL=0, curr=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5be44988=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@635c57eb=0, curr=5874, head=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 564]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L570] int n = __VERIFIER_nondet_int(); [L548] node_t* head; [L549] node_t* curr = malloc(sizeof(node_t)); [L550] curr->val = 0 [L551] head = curr [L552] int i = 1; [L552] COND FALSE !(i < n) [L558] curr->next = head [L559] return head; [L571] node_t* head = init_cll(n); [L563] node_t* curr = head; Loop: [L564] COND TRUE curr != ((void *)0) [L565] EXPR curr->next [L565] curr = curr->next End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...