./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-memory-linkedlists/ll_append-alloca-2.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_c55680b3-c680-42de-924e-7817921a61fb/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_c55680b3-c680-42de-924e-7817921a61fb/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_c55680b3-c680-42de-924e-7817921a61fb/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_c55680b3-c680-42de-924e-7817921a61fb/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-memory-linkedlists/ll_append-alloca-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_c55680b3-c680-42de-924e-7817921a61fb/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_c55680b3-c680-42de-924e-7817921a61fb/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 18edad3aefc49839189b8c997aba3dd32264f7ca ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.1.24-678e011 [2019-11-20 02:25:24,324 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 02:25:24,326 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 02:25:24,337 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 02:25:24,337 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 02:25:24,338 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 02:25:24,339 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 02:25:24,341 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 02:25:24,343 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 02:25:24,344 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 02:25:24,345 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 02:25:24,346 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 02:25:24,346 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 02:25:24,347 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 02:25:24,348 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 02:25:24,349 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 02:25:24,350 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 02:25:24,350 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 02:25:24,352 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 02:25:24,354 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 02:25:24,356 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 02:25:24,357 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 02:25:24,358 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 02:25:24,359 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 02:25:24,361 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 02:25:24,361 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 02:25:24,361 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 02:25:24,362 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 02:25:24,363 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 02:25:24,364 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 02:25:24,364 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 02:25:24,364 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 02:25:24,365 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 02:25:24,366 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 02:25:24,366 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 02:25:24,367 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 02:25:24,367 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 02:25:24,367 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 02:25:24,368 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 02:25:24,368 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 02:25:24,369 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 02:25:24,369 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_c55680b3-c680-42de-924e-7817921a61fb/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-11-20 02:25:24,387 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 02:25:24,389 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 02:25:24,391 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 02:25:24,391 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 02:25:24,391 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 02:25:24,392 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-20 02:25:24,392 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-20 02:25:24,392 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-20 02:25:24,392 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-20 02:25:24,393 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-20 02:25:24,394 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-20 02:25:24,394 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 02:25:24,394 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-20 02:25:24,394 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 02:25:24,395 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 02:25:24,395 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-20 02:25:24,395 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-20 02:25:24,395 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-20 02:25:24,395 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 02:25:24,396 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-20 02:25:24,396 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 02:25:24,396 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-20 02:25:24,397 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 02:25:24,397 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 02:25:24,397 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-20 02:25:24,397 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 02:25:24,398 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 02:25:24,398 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-20 02:25:24,399 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-20 02:25:24,399 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_c55680b3-c680-42de-924e-7817921a61fb/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 -> 18edad3aefc49839189b8c997aba3dd32264f7ca [2019-11-20 02:25:24,565 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 02:25:24,574 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 02:25:24,577 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 02:25:24,578 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 02:25:24,579 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 02:25:24,579 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_c55680b3-c680-42de-924e-7817921a61fb/bin/uautomizer/../../sv-benchmarks/c/termination-memory-linkedlists/ll_append-alloca-2.i [2019-11-20 02:25:24,629 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c55680b3-c680-42de-924e-7817921a61fb/bin/uautomizer/data/b12bfe855/360009bd341849a389bc50925d136988/FLAG43284a702 [2019-11-20 02:25:25,088 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 02:25:25,090 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_c55680b3-c680-42de-924e-7817921a61fb/sv-benchmarks/c/termination-memory-linkedlists/ll_append-alloca-2.i [2019-11-20 02:25:25,101 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c55680b3-c680-42de-924e-7817921a61fb/bin/uautomizer/data/b12bfe855/360009bd341849a389bc50925d136988/FLAG43284a702 [2019-11-20 02:25:25,112 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_c55680b3-c680-42de-924e-7817921a61fb/bin/uautomizer/data/b12bfe855/360009bd341849a389bc50925d136988 [2019-11-20 02:25:25,114 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 02:25:25,115 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 02:25:25,116 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 02:25:25,117 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 02:25:25,120 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 02:25:25,120 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 02:25:25" (1/1) ... [2019-11-20 02:25:25,123 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b6ebd8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:25:25, skipping insertion in model container [2019-11-20 02:25:25,123 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 02:25:25" (1/1) ... [2019-11-20 02:25:25,129 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 02:25:25,162 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 02:25:25,524 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 02:25:25,536 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 02:25:25,570 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 02:25:25,640 INFO L192 MainTranslator]: Completed translation [2019-11-20 02:25:25,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:25:25 WrapperNode [2019-11-20 02:25:25,642 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 02:25:25,643 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 02:25:25,643 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 02:25:25,643 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 02:25:25,652 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:25:25" (1/1) ... [2019-11-20 02:25:25,666 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:25:25" (1/1) ... [2019-11-20 02:25:25,686 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 02:25:25,686 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 02:25:25,686 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 02:25:25,686 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 02:25:25,695 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:25:25" (1/1) ... [2019-11-20 02:25:25,695 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:25:25" (1/1) ... [2019-11-20 02:25:25,704 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:25:25" (1/1) ... [2019-11-20 02:25:25,704 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:25:25" (1/1) ... [2019-11-20 02:25:25,712 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:25:25" (1/1) ... [2019-11-20 02:25:25,732 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:25:25" (1/1) ... [2019-11-20 02:25:25,734 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:25:25" (1/1) ... [2019-11-20 02:25:25,737 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 02:25:25,744 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 02:25:25,745 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 02:25:25,745 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 02:25:25,746 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:25:25" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c55680b3-c680-42de-924e-7817921a61fb/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 [2019-11-20 02:25:25,820 INFO L130 BoogieDeclarations]: Found specification of procedure new_ll [2019-11-20 02:25:25,820 INFO L138 BoogieDeclarations]: Found implementation of procedure new_ll [2019-11-20 02:25:25,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-20 02:25:25,821 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-20 02:25:25,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-20 02:25:25,821 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-20 02:25:25,822 INFO L130 BoogieDeclarations]: Found specification of procedure length [2019-11-20 02:25:25,822 INFO L138 BoogieDeclarations]: Found implementation of procedure length [2019-11-20 02:25:25,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 02:25:25,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 02:25:26,154 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 02:25:26,155 INFO L285 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-20 02:25:26,156 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 02:25:26 BoogieIcfgContainer [2019-11-20 02:25:26,156 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 02:25:26,157 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-20 02:25:26,157 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-20 02:25:26,160 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-20 02:25:26,160 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-20 02:25:26,161 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.11 02:25:25" (1/3) ... [2019-11-20 02:25:26,161 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@45ea94c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 02:25:26, skipping insertion in model container [2019-11-20 02:25:26,161 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-20 02:25:26,161 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:25:25" (2/3) ... [2019-11-20 02:25:26,162 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@45ea94c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 02:25:26, skipping insertion in model container [2019-11-20 02:25:26,162 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-20 02:25:26,162 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 02:25:26" (3/3) ... [2019-11-20 02:25:26,163 INFO L371 chiAutomizerObserver]: Analyzing ICFG ll_append-alloca-2.i [2019-11-20 02:25:26,205 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-20 02:25:26,205 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-20 02:25:26,206 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-20 02:25:26,206 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 02:25:26,206 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 02:25:26,206 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-20 02:25:26,206 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 02:25:26,206 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-20 02:25:26,223 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27 states. [2019-11-20 02:25:26,249 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 8 [2019-11-20 02:25:26,249 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 02:25:26,249 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 02:25:26,257 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-11-20 02:25:26,257 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-20 02:25:26,257 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-20 02:25:26,257 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27 states. [2019-11-20 02:25:26,263 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 8 [2019-11-20 02:25:26,264 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 02:25:26,264 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 02:25:26,264 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-11-20 02:25:26,264 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-20 02:25:26,270 INFO L794 eck$LassoCheckResult]: Stem: 23#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 10#L-1true havoc main_#res;havoc main_#t~nondet8, main_#t~ret9.base, main_#t~ret9.offset, main_#t~ret10.base, main_#t~ret10.offset, main_#t~ret11, main_~n~0, main_~x~0.base, main_~x~0.offset, main_~y~0.base, main_~y~0.offset, main_~y_length~0;main_~n~0 := main_#t~nondet8;havoc main_#t~nondet8; 12#L574true assume !(main_~n~0 < 1); 7#L577true call main_#t~ret9.base, main_#t~ret9.offset := new_ll(main_~n~0);< 15#new_llENTRYtrue [2019-11-20 02:25:26,270 INFO L796 eck$LassoCheckResult]: Loop: 15#new_llENTRYtrue ~n := #in~n; 29#L548true assume !(0 == ~n);call #t~malloc2.base, #t~malloc2.offset := #Ultimate.allocOnHeap(12);~head~0.base, ~head~0.offset := #t~malloc2.base, #t~malloc2.offset;call write~int(~n, ~head~0.base, ~head~0.offset, 4); 22#L552true call #t~ret3.base, #t~ret3.offset := new_ll(~n - 1);< 15#new_llENTRYtrue [2019-11-20 02:25:26,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 02:25:26,275 INFO L82 PathProgramCache]: Analyzing trace with hash 1418244, now seen corresponding path program 1 times [2019-11-20 02:25:26,282 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 02:25:26,282 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527791293] [2019-11-20 02:25:26,282 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 02:25:26,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 02:25:26,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 02:25:26,381 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 02:25:26,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 02:25:26,382 INFO L82 PathProgramCache]: Analyzing trace with hash 29967, now seen corresponding path program 1 times [2019-11-20 02:25:26,382 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 02:25:26,383 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140806769] [2019-11-20 02:25:26,383 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 02:25:26,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 02:25:26,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 02:25:26,424 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 02:25:26,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 02:25:26,425 INFO L82 PathProgramCache]: Analyzing trace with hash -698765780, now seen corresponding path program 1 times [2019-11-20 02:25:26,426 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 02:25:26,426 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643131800] [2019-11-20 02:25:26,426 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 02:25:26,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 02:25:26,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 02:25:26,467 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 02:25:26,766 WARN L191 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 66 [2019-11-20 02:25:27,028 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2019-11-20 02:25:27,324 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 02:25:27,324 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 02:25:27,325 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 02:25:27,325 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 02:25:27,325 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 02:25:27,325 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 02:25:27,325 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 02:25:27,325 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 02:25:27,325 INFO L133 ssoRankerPreferences]: Filename of dumped script: ll_append-alloca-2.i_Iteration1_Lasso [2019-11-20 02:25:27,326 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 02:25:27,326 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 02:25:27,361 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 02:25:27,367 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 02:25:27,370 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 02:25:27,375 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 02:25:27,378 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 02:25:27,381 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 02:25:27,383 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 02:25:27,387 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 02:25:27,392 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 02:25:27,396 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 02:25:27,399 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 02:25:27,402 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 02:25:27,405 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 02:25:27,407 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 02:25:27,410 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 02:25:27,414 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 02:25:27,419 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 02:25:27,423 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 02:25:27,425 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 02:25:27,428 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 02:25:27,431 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 02:25:27,472 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 02:25:27,475 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 02:25:27,478 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 02:25:27,480 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 02:25:27,483 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 02:25:27,487 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 02:25:27,492 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 02:25:27,494 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 02:25:27,500 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 02:25:27,505 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 02:25:27,508 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 02:25:27,510 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 02:25:27,513 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 02:25:27,515 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 02:25:27,517 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 02:25:27,520 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 02:25:27,522 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 02:25:27,525 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 02:25:27,529 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 02:25:27,531 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 02:25:27,534 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 02:25:27,537 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 02:25:27,540 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 02:25:27,849 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 02:25:27,855 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c55680b3-c680-42de-924e-7817921a61fb/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 [2019-11-20 02:25:27,861 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 [2019-11-20 02:25:27,863 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 02:25:27,863 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 02:25:27,864 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 02:25:27,864 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 02:25:27,864 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 02:25:27,868 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 02:25:27,869 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 02:25:27,871 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c55680b3-c680-42de-924e-7817921a61fb/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 [2019-11-20 02:25:27,890 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 [2019-11-20 02:25:27,892 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 02:25:27,892 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 02:25:27,892 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 02:25:27,892 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 02:25:27,893 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 02:25:27,894 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 02:25:27,894 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 02:25:27,898 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c55680b3-c680-42de-924e-7817921a61fb/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 [2019-11-20 02:25:27,906 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 [2019-11-20 02:25:27,909 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 02:25:27,910 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 02:25:27,910 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 02:25:27,910 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 02:25:27,910 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 02:25:27,911 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 02:25:27,911 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 02:25:27,914 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c55680b3-c680-42de-924e-7817921a61fb/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 [2019-11-20 02:25:27,931 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 [2019-11-20 02:25:27,933 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 02:25:27,933 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 02:25:27,933 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 02:25:27,933 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 02:25:27,934 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 02:25:27,934 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 02:25:27,934 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 02:25:27,936 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c55680b3-c680-42de-924e-7817921a61fb/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) [2019-11-20 02:25:27,955 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 [2019-11-20 02:25:27,956 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 02:25:27,956 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 02:25:27,957 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 02:25:27,957 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 02:25:27,957 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 02:25:27,958 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 02:25:27,958 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 02:25:27,960 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c55680b3-c680-42de-924e-7817921a61fb/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 [2019-11-20 02:25:27,967 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 [2019-11-20 02:25:27,969 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 02:25:27,969 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 02:25:27,969 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 02:25:27,969 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 02:25:27,969 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 02:25:27,970 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 02:25:27,970 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 02:25:27,974 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c55680b3-c680-42de-924e-7817921a61fb/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 [2019-11-20 02:25:27,978 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 [2019-11-20 02:25:27,980 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 02:25:27,980 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 02:25:27,980 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 02:25:27,980 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 02:25:27,980 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 02:25:27,981 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 02:25:27,981 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 02:25:27,982 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c55680b3-c680-42de-924e-7817921a61fb/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 [2019-11-20 02:25:27,987 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 [2019-11-20 02:25:27,989 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 02:25:27,990 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 02:25:27,990 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 02:25:27,990 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 02:25:27,990 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 02:25:27,991 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 02:25:27,991 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 02:25:27,995 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c55680b3-c680-42de-924e-7817921a61fb/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) [2019-11-20 02:25:28,017 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 [2019-11-20 02:25:28,019 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 02:25:28,019 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 02:25:28,019 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 02:25:28,019 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 02:25:28,020 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 02:25:28,020 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 02:25:28,020 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 02:25:28,023 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c55680b3-c680-42de-924e-7817921a61fb/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 [2019-11-20 02:25:28,032 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 [2019-11-20 02:25:28,035 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 02:25:28,035 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 02:25:28,036 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 02:25:28,036 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 02:25:28,036 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 02:25:28,038 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 02:25:28,038 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 02:25:28,040 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c55680b3-c680-42de-924e-7817921a61fb/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) [2019-11-20 02:25:28,054 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 [2019-11-20 02:25:28,056 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 02:25:28,056 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 02:25:28,056 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 02:25:28,056 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 02:25:28,057 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 02:25:28,058 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 02:25:28,058 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 02:25:28,063 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c55680b3-c680-42de-924e-7817921a61fb/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) [2019-11-20 02:25:28,075 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 [2019-11-20 02:25:28,078 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 02:25:28,078 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 02:25:28,078 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 02:25:28,078 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 02:25:28,078 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 02:25:28,081 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 02:25:28,081 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 02:25:28,083 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c55680b3-c680-42de-924e-7817921a61fb/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) [2019-11-20 02:25:28,096 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 [2019-11-20 02:25:28,098 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 02:25:28,098 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 02:25:28,098 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 02:25:28,098 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 02:25:28,098 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 02:25:28,099 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 02:25:28,099 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 02:25:28,101 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c55680b3-c680-42de-924e-7817921a61fb/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) [2019-11-20 02:25:28,111 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 [2019-11-20 02:25:28,113 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 02:25:28,113 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 02:25:28,113 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 02:25:28,113 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 02:25:28,114 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 02:25:28,114 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 02:25:28,114 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 02:25:28,115 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c55680b3-c680-42de-924e-7817921a61fb/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) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 02:25:28,121 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 [2019-11-20 02:25:28,122 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 02:25:28,122 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 02:25:28,122 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 02:25:28,122 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 02:25:28,123 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 02:25:28,123 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 02:25:28,123 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 02:25:28,125 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c55680b3-c680-42de-924e-7817921a61fb/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) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 02:25:28,139 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 [2019-11-20 02:25:28,141 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 02:25:28,141 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 02:25:28,141 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 02:25:28,141 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 02:25:28,143 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 02:25:28,144 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 02:25:28,147 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c55680b3-c680-42de-924e-7817921a61fb/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 [2019-11-20 02:25:28,151 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 [2019-11-20 02:25:28,153 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 02:25:28,153 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 02:25:28,153 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 02:25:28,153 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 02:25:28,153 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 02:25:28,154 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 02:25:28,154 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 02:25:28,156 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c55680b3-c680-42de-924e-7817921a61fb/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 [2019-11-20 02:25:28,167 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 [2019-11-20 02:25:28,170 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 02:25:28,170 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 02:25:28,170 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 02:25:28,170 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 02:25:28,170 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 02:25:28,171 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 02:25:28,171 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 02:25:28,172 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c55680b3-c680-42de-924e-7817921a61fb/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 [2019-11-20 02:25:28,179 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 [2019-11-20 02:25:28,180 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 02:25:28,181 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 02:25:28,181 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 02:25:28,181 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 02:25:28,181 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 02:25:28,181 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 02:25:28,182 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 02:25:28,183 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c55680b3-c680-42de-924e-7817921a61fb/bin/uautomizer/z3 Starting monitored process 21 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 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 02:25:28,192 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 [2019-11-20 02:25:28,193 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 02:25:28,193 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 02:25:28,193 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 02:25:28,194 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 02:25:28,194 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 02:25:28,194 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 02:25:28,194 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 02:25:28,199 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c55680b3-c680-42de-924e-7817921a61fb/bin/uautomizer/z3 Starting monitored process 22 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 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 02:25:28,225 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 [2019-11-20 02:25:28,228 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 02:25:28,228 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 02:25:28,228 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2019-11-20 02:25:28,228 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 02:25:28,236 INFO L401 nArgumentSynthesizer]: We have 16 Motzkin's Theorem applications. [2019-11-20 02:25:28,237 INFO L402 nArgumentSynthesizer]: A total of 4 supporting invariants were added. [2019-11-20 02:25:28,253 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 02:25:28,305 INFO L443 ModelExtractionUtils]: Simplification made 6 calls to the SMT solver. [2019-11-20 02:25:28,305 INFO L444 ModelExtractionUtils]: 2 out of 11 variables were initially zero. Simplification set additionally 6 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c55680b3-c680-42de-924e-7817921a61fb/bin/uautomizer/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 02:25:28,311 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 02:25:28,316 INFO L438 nArgumentSynthesizer]: Removed 3 redundant supporting invariants from a total of 4. [2019-11-20 02:25:28,316 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 02:25:28,317 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(new_ll_#in~n) = 1*new_ll_#in~n Supporting invariants [1*new_ll_#in~n >= 0] [2019-11-20 02:25:28,338 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2019-11-20 02:25:28,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 02:25:28,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:25:28,465 INFO L255 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-20 02:25:28,468 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 02:25:28,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:25:28,515 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-20 02:25:28,516 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 02:25:28,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 02:25:28,567 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2019-11-20 02:25:28,568 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27 states. Second operand 5 states. [2019-11-20 02:25:28,744 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 27 states.. Second operand 5 states. Result 45 states and 54 transitions. Complement of second has 13 states. [2019-11-20 02:25:28,747 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-20 02:25:28,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-11-20 02:25:28,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 12 transitions. [2019-11-20 02:25:28,750 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 4 letters. Loop has 3 letters. [2019-11-20 02:25:28,751 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 02:25:28,752 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 7 letters. Loop has 3 letters. [2019-11-20 02:25:28,752 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 02:25:28,752 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 4 letters. Loop has 6 letters. [2019-11-20 02:25:28,752 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 02:25:28,753 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 45 states and 54 transitions. [2019-11-20 02:25:28,764 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 5 [2019-11-20 02:25:28,772 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 45 states to 29 states and 37 transitions. [2019-11-20 02:25:28,773 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 22 [2019-11-20 02:25:28,773 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2019-11-20 02:25:28,774 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 37 transitions. [2019-11-20 02:25:28,777 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 02:25:28,778 INFO L688 BuchiCegarLoop]: Abstraction has 29 states and 37 transitions. [2019-11-20 02:25:28,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states and 37 transitions. [2019-11-20 02:25:28,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2019-11-20 02:25:28,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-11-20 02:25:28,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions. [2019-11-20 02:25:28,810 INFO L711 BuchiCegarLoop]: Abstraction has 27 states and 33 transitions. [2019-11-20 02:25:28,810 INFO L591 BuchiCegarLoop]: Abstraction has 27 states and 33 transitions. [2019-11-20 02:25:28,810 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-20 02:25:28,810 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27 states and 33 transitions. [2019-11-20 02:25:28,813 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 5 [2019-11-20 02:25:28,813 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 02:25:28,813 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 02:25:28,814 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 02:25:28,814 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-20 02:25:28,815 INFO L794 eck$LassoCheckResult]: Stem: 160#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 158#L-1 havoc main_#res;havoc main_#t~nondet8, main_#t~ret9.base, main_#t~ret9.offset, main_#t~ret10.base, main_#t~ret10.offset, main_#t~ret11, main_~n~0, main_~x~0.base, main_~x~0.offset, main_~y~0.base, main_~y~0.offset, main_~y_length~0;main_~n~0 := main_#t~nondet8;havoc main_#t~nondet8; 159#L574 assume !(main_~n~0 < 1); 141#L577 call main_#t~ret9.base, main_#t~ret9.offset := new_ll(main_~n~0);< 151#new_llENTRY ~n := #in~n; 163#L548 assume 0 == ~n;#res.base, #res.offset := 0, 0; 140#new_llFINAL assume true; 142#new_llEXIT >#57#return; 153#L577-1 main_~x~0.base, main_~x~0.offset := main_#t~ret9.base, main_#t~ret9.offset;havoc main_#t~ret9.base, main_#t~ret9.offset;append_#in~x.base, append_#in~x.offset, append_#in~y.base, append_#in~y.offset := main_~x~0.base, main_~x~0.offset, main_~x~0.base, main_~x~0.offset;havoc append_#res.base, append_#res.offset;havoc append_#t~mem7.base, append_#t~mem7.offset, append_#t~mem6.base, append_#t~mem6.offset, append_~x.base, append_~x.offset, append_~y.base, append_~y.offset, append_~s~0.base, append_~s~0.offset;append_~x.base, append_~x.offset := append_#in~x.base, append_#in~x.offset;append_~y.base, append_~y.offset := append_#in~y.base, append_#in~y.offset; 154#L563 assume !(append_~x.base == 0 && append_~x.offset == 0);append_~s~0.base, append_~s~0.offset := append_~x.base, append_~x.offset; 157#L566-3 [2019-11-20 02:25:28,815 INFO L796 eck$LassoCheckResult]: Loop: 157#L566-3 call append_#t~mem6.base, append_#t~mem6.offset := read~$Pointer$(append_~x.base, 4 + append_~x.offset, 8); 155#L566-1 assume !!(append_#t~mem6.base != 0 || append_#t~mem6.offset != 0);havoc append_#t~mem6.base, append_#t~mem6.offset;call append_#t~mem7.base, append_#t~mem7.offset := read~$Pointer$(append_~x.base, 4 + append_~x.offset, 8);append_~x.base, append_~x.offset := append_#t~mem7.base, append_#t~mem7.offset;havoc append_#t~mem7.base, append_#t~mem7.offset; 157#L566-3 [2019-11-20 02:25:28,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 02:25:28,816 INFO L82 PathProgramCache]: Analyzing trace with hash 772923198, now seen corresponding path program 1 times [2019-11-20 02:25:28,816 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 02:25:28,816 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307593328] [2019-11-20 02:25:28,816 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 02:25:28,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:25:28,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:25:28,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 02:25:28,952 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307593328] [2019-11-20 02:25:28,953 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 02:25:28,953 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-20 02:25:28,953 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891801441] [2019-11-20 02:25:28,956 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-20 02:25:28,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 02:25:28,956 INFO L82 PathProgramCache]: Analyzing trace with hash 2086, now seen corresponding path program 1 times [2019-11-20 02:25:28,956 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 02:25:28,956 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533019506] [2019-11-20 02:25:28,956 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 02:25:28,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 02:25:28,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 02:25:28,965 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 02:25:29,029 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 02:25:29,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-20 02:25:29,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-20 02:25:29,033 INFO L87 Difference]: Start difference. First operand 27 states and 33 transitions. cyclomatic complexity: 9 Second operand 6 states. [2019-11-20 02:25:29,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 02:25:29,159 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2019-11-20 02:25:29,160 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-20 02:25:29,161 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 31 transitions. [2019-11-20 02:25:29,162 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 5 [2019-11-20 02:25:29,163 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 24 states and 28 transitions. [2019-11-20 02:25:29,163 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 21 [2019-11-20 02:25:29,163 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 21 [2019-11-20 02:25:29,163 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 28 transitions. [2019-11-20 02:25:29,163 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 02:25:29,163 INFO L688 BuchiCegarLoop]: Abstraction has 24 states and 28 transitions. [2019-11-20 02:25:29,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 28 transitions. [2019-11-20 02:25:29,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2019-11-20 02:25:29,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-11-20 02:25:29,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2019-11-20 02:25:29,166 INFO L711 BuchiCegarLoop]: Abstraction has 24 states and 28 transitions. [2019-11-20 02:25:29,166 INFO L591 BuchiCegarLoop]: Abstraction has 24 states and 28 transitions. [2019-11-20 02:25:29,166 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-20 02:25:29,167 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 28 transitions. [2019-11-20 02:25:29,167 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 5 [2019-11-20 02:25:29,167 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 02:25:29,167 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 02:25:29,168 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 02:25:29,168 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-20 02:25:29,168 INFO L794 eck$LassoCheckResult]: Stem: 231#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 229#L-1 havoc main_#res;havoc main_#t~nondet8, main_#t~ret9.base, main_#t~ret9.offset, main_#t~ret10.base, main_#t~ret10.offset, main_#t~ret11, main_~n~0, main_~x~0.base, main_~x~0.offset, main_~y~0.base, main_~y~0.offset, main_~y_length~0;main_~n~0 := main_#t~nondet8;havoc main_#t~nondet8; 230#L574 assume !(main_~n~0 < 1); 220#L577 call main_#t~ret9.base, main_#t~ret9.offset := new_ll(main_~n~0);< 222#new_llENTRY ~n := #in~n; 232#L548 assume !(0 == ~n);call #t~malloc2.base, #t~malloc2.offset := #Ultimate.allocOnHeap(12);~head~0.base, ~head~0.offset := #t~malloc2.base, #t~malloc2.offset;call write~int(~n, ~head~0.base, ~head~0.offset, 4); 212#L552 call #t~ret3.base, #t~ret3.offset := new_ll(~n - 1);< 223#new_llENTRY ~n := #in~n; 233#L548 assume 0 == ~n;#res.base, #res.offset := 0, 0; 211#new_llFINAL assume true; 213#new_llEXIT >#53#return; 219#L552-1 call write~$Pointer$(#t~ret3.base, #t~ret3.offset, ~head~0.base, 4 + ~head~0.offset, 8);havoc #t~ret3.base, #t~ret3.offset;#res.base, #res.offset := ~head~0.base, ~head~0.offset; 221#new_llFINAL assume true; 234#new_llEXIT >#57#return; 224#L577-1 main_~x~0.base, main_~x~0.offset := main_#t~ret9.base, main_#t~ret9.offset;havoc main_#t~ret9.base, main_#t~ret9.offset;append_#in~x.base, append_#in~x.offset, append_#in~y.base, append_#in~y.offset := main_~x~0.base, main_~x~0.offset, main_~x~0.base, main_~x~0.offset;havoc append_#res.base, append_#res.offset;havoc append_#t~mem7.base, append_#t~mem7.offset, append_#t~mem6.base, append_#t~mem6.offset, append_~x.base, append_~x.offset, append_~y.base, append_~y.offset, append_~s~0.base, append_~s~0.offset;append_~x.base, append_~x.offset := append_#in~x.base, append_#in~x.offset;append_~y.base, append_~y.offset := append_#in~y.base, append_#in~y.offset; 225#L563 assume !(append_~x.base == 0 && append_~x.offset == 0);append_~s~0.base, append_~s~0.offset := append_~x.base, append_~x.offset; 228#L566-3 [2019-11-20 02:25:29,168 INFO L796 eck$LassoCheckResult]: Loop: 228#L566-3 call append_#t~mem6.base, append_#t~mem6.offset := read~$Pointer$(append_~x.base, 4 + append_~x.offset, 8); 226#L566-1 assume !!(append_#t~mem6.base != 0 || append_#t~mem6.offset != 0);havoc append_#t~mem6.base, append_#t~mem6.offset;call append_#t~mem7.base, append_#t~mem7.offset := read~$Pointer$(append_~x.base, 4 + append_~x.offset, 8);append_~x.base, append_~x.offset := append_#t~mem7.base, append_#t~mem7.offset;havoc append_#t~mem7.base, append_#t~mem7.offset; 228#L566-3 [2019-11-20 02:25:29,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 02:25:29,168 INFO L82 PathProgramCache]: Analyzing trace with hash 704779872, now seen corresponding path program 1 times [2019-11-20 02:25:29,169 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 02:25:29,169 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705197313] [2019-11-20 02:25:29,169 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 02:25:29,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 02:25:29,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 02:25:29,228 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 02:25:29,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 02:25:29,228 INFO L82 PathProgramCache]: Analyzing trace with hash 2086, now seen corresponding path program 2 times [2019-11-20 02:25:29,229 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 02:25:29,229 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715738034] [2019-11-20 02:25:29,229 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 02:25:29,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 02:25:29,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 02:25:29,248 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 02:25:29,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 02:25:29,249 INFO L82 PathProgramCache]: Analyzing trace with hash -1311374651, now seen corresponding path program 1 times [2019-11-20 02:25:29,249 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 02:25:29,249 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274803513] [2019-11-20 02:25:29,249 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 02:25:29,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:25:29,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:25:29,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:25:29,533 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-20 02:25:29,533 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274803513] [2019-11-20 02:25:29,533 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1917969920] [2019-11-20 02:25:29,533 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c55680b3-c680-42de-924e-7817921a61fb/bin/uautomizer/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 02:25:29,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:25:29,612 INFO L255 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 46 conjunts are in the unsatisfiable core [2019-11-20 02:25:29,616 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 02:25:29,654 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-20 02:25:29,654 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 02:25:29,663 INFO L567 ElimStorePlain]: treesize reduction 3, result has 75.0 percent of original size [2019-11-20 02:25:29,664 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 02:25:29,664 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:9 [2019-11-20 02:25:29,770 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-11-20 02:25:29,770 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 02:25:29,780 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 02:25:29,785 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-11-20 02:25:29,785 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 02:25:29,793 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 02:25:29,797 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-11-20 02:25:29,798 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-11-20 02:25:29,804 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 02:25:29,805 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 02:25:29,805 INFO L221 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:36, output treesize:18 [2019-11-20 02:25:29,825 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-11-20 02:25:29,826 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 02:25:29,832 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 02:25:29,835 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-11-20 02:25:29,836 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 02:25:29,840 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 02:25:29,841 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 02:25:29,841 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:7 [2019-11-20 02:25:29,871 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 02:25:29,871 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 02:25:29,871 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2019-11-20 02:25:29,871 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682322972] [2019-11-20 02:25:29,949 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 02:25:29,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-11-20 02:25:29,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2019-11-20 02:25:29,950 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. cyclomatic complexity: 7 Second operand 15 states. [2019-11-20 02:25:30,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 02:25:30,199 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions. [2019-11-20 02:25:30,200 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-20 02:25:30,200 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 34 states and 40 transitions. [2019-11-20 02:25:30,201 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 5 [2019-11-20 02:25:30,203 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 34 states to 34 states and 40 transitions. [2019-11-20 02:25:30,203 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 31 [2019-11-20 02:25:30,203 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 31 [2019-11-20 02:25:30,203 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 40 transitions. [2019-11-20 02:25:30,203 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 02:25:30,203 INFO L688 BuchiCegarLoop]: Abstraction has 34 states and 40 transitions. [2019-11-20 02:25:30,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states and 40 transitions. [2019-11-20 02:25:30,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 31. [2019-11-20 02:25:30,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-20 02:25:30,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 37 transitions. [2019-11-20 02:25:30,207 INFO L711 BuchiCegarLoop]: Abstraction has 31 states and 37 transitions. [2019-11-20 02:25:30,207 INFO L591 BuchiCegarLoop]: Abstraction has 31 states and 37 transitions. [2019-11-20 02:25:30,207 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-20 02:25:30,207 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 31 states and 37 transitions. [2019-11-20 02:25:30,208 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 5 [2019-11-20 02:25:30,208 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 02:25:30,209 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 02:25:30,209 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 02:25:30,209 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-20 02:25:30,209 INFO L794 eck$LassoCheckResult]: Stem: 378#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 376#L-1 havoc main_#res;havoc main_#t~nondet8, main_#t~ret9.base, main_#t~ret9.offset, main_#t~ret10.base, main_#t~ret10.offset, main_#t~ret11, main_~n~0, main_~x~0.base, main_~x~0.offset, main_~y~0.base, main_~y~0.offset, main_~y_length~0;main_~n~0 := main_#t~nondet8;havoc main_#t~nondet8; 377#L574 assume !(main_~n~0 < 1); 362#L577 call main_#t~ret9.base, main_#t~ret9.offset := new_ll(main_~n~0);< 370#new_llENTRY ~n := #in~n; 382#L548 assume !(0 == ~n);call #t~malloc2.base, #t~malloc2.offset := #Ultimate.allocOnHeap(12);~head~0.base, ~head~0.offset := #t~malloc2.base, #t~malloc2.offset;call write~int(~n, ~head~0.base, ~head~0.offset, 4); 361#L552 call #t~ret3.base, #t~ret3.offset := new_ll(~n - 1);< 371#new_llENTRY ~n := #in~n; 383#L548 assume 0 == ~n;#res.base, #res.offset := 0, 0; 384#new_llFINAL assume true; 381#new_llEXIT >#53#return; 369#L552-1 call write~$Pointer$(#t~ret3.base, #t~ret3.offset, ~head~0.base, 4 + ~head~0.offset, 8);havoc #t~ret3.base, #t~ret3.offset;#res.base, #res.offset := ~head~0.base, ~head~0.offset; 360#new_llFINAL assume true; 363#new_llEXIT >#57#return; 387#L577-1 main_~x~0.base, main_~x~0.offset := main_#t~ret9.base, main_#t~ret9.offset;havoc main_#t~ret9.base, main_#t~ret9.offset;append_#in~x.base, append_#in~x.offset, append_#in~y.base, append_#in~y.offset := main_~x~0.base, main_~x~0.offset, main_~x~0.base, main_~x~0.offset;havoc append_#res.base, append_#res.offset;havoc append_#t~mem7.base, append_#t~mem7.offset, append_#t~mem6.base, append_#t~mem6.offset, append_~x.base, append_~x.offset, append_~y.base, append_~y.offset, append_~s~0.base, append_~s~0.offset;append_~x.base, append_~x.offset := append_#in~x.base, append_#in~x.offset;append_~y.base, append_~y.offset := append_#in~y.base, append_#in~y.offset; 386#L563 assume append_~x.base == 0 && append_~x.offset == 0;append_#res.base, append_#res.offset := append_~y.base, append_~y.offset; 368#L569 main_#t~ret10.base, main_#t~ret10.offset := append_#res.base, append_#res.offset;main_~y~0.base, main_~y~0.offset := main_#t~ret10.base, main_#t~ret10.offset;havoc main_#t~ret10.base, main_#t~ret10.offset; 365#L579 call main_#t~ret11 := length(main_~y~0.base, main_~y~0.offset);< 364#lengthENTRY [2019-11-20 02:25:30,210 INFO L796 eck$LassoCheckResult]: Loop: 364#lengthENTRY ~xs.base, ~xs.offset := #in~xs.base, #in~xs.offset; 367#L557 assume !(~xs.base == 0 && ~xs.offset == 0);call #t~mem4.base, #t~mem4.offset := read~$Pointer$(~xs.base, 4 + ~xs.offset, 8); 366#L559 call #t~ret5 := length(#t~mem4.base, #t~mem4.offset);< 364#lengthENTRY [2019-11-20 02:25:30,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 02:25:30,210 INFO L82 PathProgramCache]: Analyzing trace with hash -1311376214, now seen corresponding path program 1 times [2019-11-20 02:25:30,210 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 02:25:30,210 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19009460] [2019-11-20 02:25:30,213 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 02:25:30,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:25:30,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:25:30,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:25:30,339 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-20 02:25:30,340 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19009460] [2019-11-20 02:25:30,340 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 02:25:30,340 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-20 02:25:30,340 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360578454] [2019-11-20 02:25:30,340 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-20 02:25:30,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 02:25:30,346 INFO L82 PathProgramCache]: Analyzing trace with hash 37905, now seen corresponding path program 1 times [2019-11-20 02:25:30,346 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 02:25:30,347 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839564189] [2019-11-20 02:25:30,347 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 02:25:30,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 02:25:30,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 02:25:30,362 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 02:25:30,488 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 02:25:30,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-20 02:25:30,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-20 02:25:30,488 INFO L87 Difference]: Start difference. First operand 31 states and 37 transitions. cyclomatic complexity: 9 Second operand 7 states. [2019-11-20 02:25:30,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 02:25:30,555 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2019-11-20 02:25:30,556 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-20 02:25:30,556 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 36 states and 41 transitions. [2019-11-20 02:25:30,558 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 5 [2019-11-20 02:25:30,559 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 36 states to 36 states and 41 transitions. [2019-11-20 02:25:30,559 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 33 [2019-11-20 02:25:30,560 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 33 [2019-11-20 02:25:30,560 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 41 transitions. [2019-11-20 02:25:30,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 02:25:30,560 INFO L688 BuchiCegarLoop]: Abstraction has 36 states and 41 transitions. [2019-11-20 02:25:30,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states and 41 transitions. [2019-11-20 02:25:30,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 31. [2019-11-20 02:25:30,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-20 02:25:30,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2019-11-20 02:25:30,565 INFO L711 BuchiCegarLoop]: Abstraction has 31 states and 35 transitions. [2019-11-20 02:25:30,565 INFO L591 BuchiCegarLoop]: Abstraction has 31 states and 35 transitions. [2019-11-20 02:25:30,566 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-11-20 02:25:30,566 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 31 states and 35 transitions. [2019-11-20 02:25:30,567 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 5 [2019-11-20 02:25:30,567 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 02:25:30,567 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 02:25:30,568 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 02:25:30,568 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-20 02:25:30,569 INFO L794 eck$LassoCheckResult]: Stem: 474#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 470#L-1 havoc main_#res;havoc main_#t~nondet8, main_#t~ret9.base, main_#t~ret9.offset, main_#t~ret10.base, main_#t~ret10.offset, main_#t~ret11, main_~n~0, main_~x~0.base, main_~x~0.offset, main_~y~0.base, main_~y~0.offset, main_~y_length~0;main_~n~0 := main_#t~nondet8;havoc main_#t~nondet8; 471#L574 assume !(main_~n~0 < 1); 456#L577 call main_#t~ret9.base, main_#t~ret9.offset := new_ll(main_~n~0);< 464#new_llENTRY ~n := #in~n; 478#L548 assume !(0 == ~n);call #t~malloc2.base, #t~malloc2.offset := #Ultimate.allocOnHeap(12);~head~0.base, ~head~0.offset := #t~malloc2.base, #t~malloc2.offset;call write~int(~n, ~head~0.base, ~head~0.offset, 4); 455#L552 call #t~ret3.base, #t~ret3.offset := new_ll(~n - 1);< 465#new_llENTRY ~n := #in~n; 479#L548 assume 0 == ~n;#res.base, #res.offset := 0, 0; 480#new_llFINAL assume true; 476#new_llEXIT >#53#return; 477#L552-1 call write~$Pointer$(#t~ret3.base, #t~ret3.offset, ~head~0.base, 4 + ~head~0.offset, 8);havoc #t~ret3.base, #t~ret3.offset;#res.base, #res.offset := ~head~0.base, ~head~0.offset; 484#new_llFINAL assume true; 481#new_llEXIT >#57#return; 466#L577-1 main_~x~0.base, main_~x~0.offset := main_#t~ret9.base, main_#t~ret9.offset;havoc main_#t~ret9.base, main_#t~ret9.offset;append_#in~x.base, append_#in~x.offset, append_#in~y.base, append_#in~y.offset := main_~x~0.base, main_~x~0.offset, main_~x~0.base, main_~x~0.offset;havoc append_#res.base, append_#res.offset;havoc append_#t~mem7.base, append_#t~mem7.offset, append_#t~mem6.base, append_#t~mem6.offset, append_~x.base, append_~x.offset, append_~y.base, append_~y.offset, append_~s~0.base, append_~s~0.offset;append_~x.base, append_~x.offset := append_#in~x.base, append_#in~x.offset;append_~y.base, append_~y.offset := append_#in~y.base, append_#in~y.offset; 467#L563 assume !(append_~x.base == 0 && append_~x.offset == 0);append_~s~0.base, append_~s~0.offset := append_~x.base, append_~x.offset; 482#L566-3 call append_#t~mem6.base, append_#t~mem6.offset := read~$Pointer$(append_~x.base, 4 + append_~x.offset, 8); 468#L566-1 assume !(append_#t~mem6.base != 0 || append_#t~mem6.offset != 0);havoc append_#t~mem6.base, append_#t~mem6.offset; 469#L566-4 call write~$Pointer$(append_~y.base, append_~y.offset, append_~x.base, 4 + append_~x.offset, 8);append_#res.base, append_#res.offset := append_~s~0.base, append_~s~0.offset; 462#L569 main_#t~ret10.base, main_#t~ret10.offset := append_#res.base, append_#res.offset;main_~y~0.base, main_~y~0.offset := main_#t~ret10.base, main_#t~ret10.offset;havoc main_#t~ret10.base, main_#t~ret10.offset; 459#L579 call main_#t~ret11 := length(main_~y~0.base, main_~y~0.offset);< 458#lengthENTRY [2019-11-20 02:25:30,569 INFO L796 eck$LassoCheckResult]: Loop: 458#lengthENTRY ~xs.base, ~xs.offset := #in~xs.base, #in~xs.offset; 461#L557 assume !(~xs.base == 0 && ~xs.offset == 0);call #t~mem4.base, #t~mem4.offset := read~$Pointer$(~xs.base, 4 + ~xs.offset, 8); 460#L559 call #t~ret5 := length(#t~mem4.base, #t~mem4.offset);< 458#lengthENTRY [2019-11-20 02:25:30,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 02:25:30,569 INFO L82 PathProgramCache]: Analyzing trace with hash -139719339, now seen corresponding path program 1 times [2019-11-20 02:25:30,569 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 02:25:30,570 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174985408] [2019-11-20 02:25:30,570 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 02:25:30,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 02:25:30,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 02:25:30,607 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 02:25:30,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 02:25:30,608 INFO L82 PathProgramCache]: Analyzing trace with hash 37905, now seen corresponding path program 2 times [2019-11-20 02:25:30,608 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 02:25:30,608 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643146183] [2019-11-20 02:25:30,608 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 02:25:30,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 02:25:30,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 02:25:30,615 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 02:25:30,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 02:25:30,616 INFO L82 PathProgramCache]: Analyzing trace with hash -555510211, now seen corresponding path program 1 times [2019-11-20 02:25:30,616 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 02:25:30,616 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803401512] [2019-11-20 02:25:30,616 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 02:25:30,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 02:25:30,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 02:25:30,647 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 02:25:31,230 WARN L191 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 111 [2019-11-20 02:25:31,245 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 02:25:31,303 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 02:25:31,309 INFO L496 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 02:25:31,354 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 02:25:31,355 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-11-20 02:25:31,355 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:131, output treesize:107 [2019-11-20 02:25:31,520 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2019-11-20 02:25:32,352 WARN L191 SmtUtils]: Spent 747.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 149 [2019-11-20 02:25:32,374 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 02:25:32,487 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2019-11-20 02:25:32,487 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 02:25:32,488 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2019-11-20 02:25:32,488 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:220, output treesize:224 [2019-11-20 02:25:32,627 WARN L191 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2019-11-20 02:25:32,768 WARN L191 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2019-11-20 02:25:32,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.11 02:25:32 BoogieIcfgContainer [2019-11-20 02:25:32,854 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-20 02:25:32,857 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 02:25:32,857 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 02:25:32,857 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 02:25:32,858 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 02:25:26" (3/4) ... [2019-11-20 02:25:32,861 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2019-11-20 02:25:32,919 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_c55680b3-c680-42de-924e-7817921a61fb/bin/uautomizer/witness.graphml [2019-11-20 02:25:32,920 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 02:25:32,921 INFO L168 Benchmark]: Toolchain (without parser) took 7805.67 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 323.0 MB). Free memory was 946.0 MB in the beginning and 1.1 GB in the end (delta: -200.5 MB). Peak memory consumption was 122.5 MB. Max. memory is 11.5 GB. [2019-11-20 02:25:32,921 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 02:25:32,922 INFO L168 Benchmark]: CACSL2BoogieTranslator took 525.81 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.1 MB). Free memory was 946.0 MB in the beginning and 1.1 GB in the end (delta: -178.6 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. [2019-11-20 02:25:32,924 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.86 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2019-11-20 02:25:32,924 INFO L168 Benchmark]: Boogie Preprocessor took 58.08 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 02:25:32,925 INFO L168 Benchmark]: RCFGBuilder took 411.80 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 28.3 MB). Peak memory consumption was 28.3 MB. Max. memory is 11.5 GB. [2019-11-20 02:25:32,925 INFO L168 Benchmark]: BuchiAutomizer took 6697.35 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 180.9 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -68.6 MB). Peak memory consumption was 362.8 MB. Max. memory is 11.5 GB. [2019-11-20 02:25:32,926 INFO L168 Benchmark]: Witness Printer took 63.02 ms. Allocated memory is still 1.4 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 11.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 11.5 GB. [2019-11-20 02:25:32,929 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 525.81 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.1 MB). Free memory was 946.0 MB in the beginning and 1.1 GB in the end (delta: -178.6 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 42.86 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 58.08 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 411.80 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 28.3 MB). Peak memory consumption was 28.3 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 6697.35 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 180.9 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -68.6 MB). Peak memory consumption was 362.8 MB. Max. memory is 11.5 GB. * Witness Printer took 63.02 ms. Allocated memory is still 1.4 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 11.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (3 trivial, 1 deterministic, 0 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function \old(n) and consists of 5 locations. 3 modules have a trivial ranking function, the largest among these consists of 15 locations. The remainder module has 31 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 6.6s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 5.6s. Construction of modules took 0.3s. Büchi inclusion checks took 0.5s. Highest rank in rank-based complementation 3. Minimization of det autom 0. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 10 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 31 states and ocurred in iteration 3. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 61 SDtfs, 58 SDslu, 209 SDs, 0 SdLazy, 237 SolverSat, 27 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc1 concLT0 SILN0 SILU2 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital136 mio100 ax100 hnf100 lsp95 ukn27 mio100 lsp38 div100 bol100 ite100 ukn100 eq214 hnf86 smp100 dnf130 smp100 tf100 neg94 sie112 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 115ms VariablesStem: 1 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 2 SupportingInvariants: 4 MotzkinApplications: 16 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: 555]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=1} State at position 1 is {x=0, x=0, y_length=0, NULL=0, y=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@633ab86a=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@35e47469=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@7d42a840=0, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@7d42a840=0, s=0, NULL=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@538e31ad=0, xs=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@35fcdad1=0, NULL=0, y=0, y=0, \result=0, x=0, y=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7ed0730=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@610d5804=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@610d5804=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@35e47469=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7cd36724=0, x=0, y=0, n=0, NULL=0, y=0, xs=-1, \result=0, \result=0, NULL=0, xs=0, xs=0, x=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@538e31ad=0, s=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFieldReference@633ab86a=0, x=0, NULL=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 555]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L573] int n = __VERIFIER_nondet_int(); [L574] COND FALSE !(n < 1) [L577] CALL, EXPR new_ll(n) [L548] COND FALSE !(n == 0) [L550] node_t* head = malloc(sizeof(node_t)); [L551] head->val = n [L552] CALL, EXPR new_ll(n-1) [L548] COND TRUE n == 0 [L549] return ((void *)0); [L552] RET, EXPR new_ll(n-1) [L552] head->next = new_ll(n-1) [L553] return head; [L577] RET, EXPR new_ll(n) [L577] node_t* x = new_ll(n); [L563] COND FALSE !(x == ((void *)0)) [L565] node_t* s = x; [L566] EXPR x->next [L566] COND FALSE !(x->next != ((void *)0)) [L568] x->next = y [L569] return s; [L578] node_t* y = append(x, x); [L579] CALL length(y) Loop: [L557] COND FALSE !(xs == ((void *)0)) [L559] EXPR xs->next [L559] CALL length(xs->next) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...