./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/recursive/Addition03-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_9d3c027e-dc7b-459f-87f9-13774f88c11e/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_9d3c027e-dc7b-459f-87f9-13774f88c11e/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_9d3c027e-dc7b-459f-87f9-13774f88c11e/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_9d3c027e-dc7b-459f-87f9-13774f88c11e/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/recursive/Addition03-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_9d3c027e-dc7b-459f-87f9-13774f88c11e/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_9d3c027e-dc7b-459f-87f9-13774f88c11e/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 32bit --witnessprinter.graph.data.programhash b2edae58c49fda124d3cdef0e9085ec6493b5502 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 02:59:04,557 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 02:59:04,559 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 02:59:04,636 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 02:59:04,636 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 02:59:04,641 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 02:59:04,644 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 02:59:04,650 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 02:59:04,652 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 02:59:04,653 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 02:59:04,654 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 02:59:04,656 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 02:59:04,656 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 02:59:04,657 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 02:59:04,658 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 02:59:04,660 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 02:59:04,662 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 02:59:04,668 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 02:59:04,674 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 02:59:04,681 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 02:59:04,683 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 02:59:04,688 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 02:59:04,690 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 02:59:04,691 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 02:59:04,700 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 02:59:04,700 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 02:59:04,700 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 02:59:04,701 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 02:59:04,702 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 02:59:04,703 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 02:59:04,703 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 02:59:04,704 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 02:59:04,705 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 02:59:04,706 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 02:59:04,707 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 02:59:04,707 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 02:59:04,708 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 02:59:04,708 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 02:59:04,709 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 02:59:04,712 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 02:59:04,713 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 02:59:04,715 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_9d3c027e-dc7b-459f-87f9-13774f88c11e/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-11-28 02:59:04,757 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 02:59:04,757 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 02:59:04,759 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 02:59:04,759 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 02:59:04,760 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 02:59:04,760 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-28 02:59:04,760 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-28 02:59:04,760 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-28 02:59:04,760 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-28 02:59:04,760 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-28 02:59:04,762 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-28 02:59:04,762 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 02:59:04,762 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 02:59:04,762 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 02:59:04,762 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 02:59:04,763 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 02:59:04,763 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 02:59:04,763 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-28 02:59:04,763 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-28 02:59:04,763 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-28 02:59:04,763 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 02:59:04,764 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 02:59:04,764 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-28 02:59:04,764 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 02:59:04,764 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-28 02:59:04,764 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 02:59:04,765 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 02:59:04,765 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-28 02:59:04,765 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 02:59:04,765 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 02:59:04,765 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 02:59:04,766 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-28 02:59:04,767 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-28 02:59:04,767 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_9d3c027e-dc7b-459f-87f9-13774f88c11e/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_9d3c027e-dc7b-459f-87f9-13774f88c11e/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b2edae58c49fda124d3cdef0e9085ec6493b5502 [2020-11-28 02:59:05,089 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 02:59:05,127 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 02:59:05,136 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 02:59:05,138 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 02:59:05,138 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 02:59:05,139 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_9d3c027e-dc7b-459f-87f9-13774f88c11e/bin/uautomizer/../../sv-benchmarks/c/recursive/Addition03-1.c [2020-11-28 02:59:05,205 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9d3c027e-dc7b-459f-87f9-13774f88c11e/bin/uautomizer/data/0a6e2c9a2/6eacee8bb68043638beab22bb222b96b/FLAG4a0719d5e [2020-11-28 02:59:05,711 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 02:59:05,713 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_9d3c027e-dc7b-459f-87f9-13774f88c11e/sv-benchmarks/c/recursive/Addition03-1.c [2020-11-28 02:59:05,725 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9d3c027e-dc7b-459f-87f9-13774f88c11e/bin/uautomizer/data/0a6e2c9a2/6eacee8bb68043638beab22bb222b96b/FLAG4a0719d5e [2020-11-28 02:59:06,110 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_9d3c027e-dc7b-459f-87f9-13774f88c11e/bin/uautomizer/data/0a6e2c9a2/6eacee8bb68043638beab22bb222b96b [2020-11-28 02:59:06,113 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 02:59:06,116 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 02:59:06,120 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 02:59:06,120 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 02:59:06,124 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 02:59:06,125 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:59:06" (1/1) ... [2020-11-28 02:59:06,128 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c9d52dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:06, skipping insertion in model container [2020-11-28 02:59:06,128 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:59:06" (1/1) ... [2020-11-28 02:59:06,135 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 02:59:06,150 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 02:59:06,323 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:59:06,336 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 02:59:06,361 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:59:06,377 INFO L208 MainTranslator]: Completed translation [2020-11-28 02:59:06,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:06 WrapperNode [2020-11-28 02:59:06,381 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 02:59:06,382 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 02:59:06,383 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 02:59:06,383 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 02:59:06,390 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:06" (1/1) ... [2020-11-28 02:59:06,399 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:06" (1/1) ... [2020-11-28 02:59:06,416 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 02:59:06,418 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 02:59:06,418 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 02:59:06,418 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 02:59:06,426 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:06" (1/1) ... [2020-11-28 02:59:06,426 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:06" (1/1) ... [2020-11-28 02:59:06,436 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:06" (1/1) ... [2020-11-28 02:59:06,437 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:06" (1/1) ... [2020-11-28 02:59:06,440 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:06" (1/1) ... [2020-11-28 02:59:06,442 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:06" (1/1) ... [2020-11-28 02:59:06,443 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:06" (1/1) ... [2020-11-28 02:59:06,444 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 02:59:06,445 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 02:59:06,447 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 02:59:06,447 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 02:59:06,448 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:06" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d3c027e-dc7b-459f-87f9-13774f88c11e/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:59:06,532 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 02:59:06,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 02:59:06,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 02:59:06,533 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 02:59:06,533 INFO L130 BoogieDeclarations]: Found specification of procedure addition [2020-11-28 02:59:06,534 INFO L138 BoogieDeclarations]: Found implementation of procedure addition [2020-11-28 02:59:06,898 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 02:59:06,898 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-28 02:59:06,900 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:59:06 BoogieIcfgContainer [2020-11-28 02:59:06,900 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 02:59:06,901 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-28 02:59:06,901 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-28 02:59:06,905 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-28 02:59:06,906 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 02:59:06,906 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 02:59:06" (1/3) ... [2020-11-28 02:59:06,908 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6312413f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 02:59:06, skipping insertion in model container [2020-11-28 02:59:06,908 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 02:59:06,908 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:06" (2/3) ... [2020-11-28 02:59:06,913 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6312413f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 02:59:06, skipping insertion in model container [2020-11-28 02:59:06,913 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 02:59:06,913 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:59:06" (3/3) ... [2020-11-28 02:59:06,915 INFO L373 chiAutomizerObserver]: Analyzing ICFG Addition03-1.c [2020-11-28 02:59:06,972 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-28 02:59:06,972 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-28 02:59:06,972 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-28 02:59:06,973 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 02:59:06,973 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 02:59:06,973 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-28 02:59:06,973 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 02:59:06,973 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-28 02:59:06,984 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states. [2020-11-28 02:59:07,005 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2020-11-28 02:59:07,006 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 02:59:07,006 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 02:59:07,012 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-11-28 02:59:07,013 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-11-28 02:59:07,013 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-28 02:59:07,013 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states. [2020-11-28 02:59:07,018 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2020-11-28 02:59:07,019 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 02:59:07,019 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 02:59:07,020 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-11-28 02:59:07,020 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-11-28 02:59:07,027 INFO L794 eck$LassoCheckResult]: Stem: 12#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(15);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 9#L-1true havoc main_#res;havoc main_#t~nondet9, main_#t~nondet10, main_#t~ret11, main_~m~0, main_~n~0, main_~result~0;main_~m~0 := main_#t~nondet9;havoc main_#t~nondet9;main_~n~0 := main_#t~nondet10;havoc main_#t~nondet10; 10#L31true call main_#t~ret11 := addition(main_~m~0, main_~n~0);< 11#additionENTRYtrue [2020-11-28 02:59:07,028 INFO L796 eck$LassoCheckResult]: Loop: 11#additionENTRYtrue ~m := #in~m;~n := #in~n; 8#L16true assume !(0 == ~n); 4#L19true assume ~n > 0; 3#L20true call #t~ret7 := addition(1 + ~m, ~n - 1);< 11#additionENTRYtrue [2020-11-28 02:59:07,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:59:07,037 INFO L82 PathProgramCache]: Analyzing trace with hash 29888, now seen corresponding path program 1 times [2020-11-28 02:59:07,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:59:07,052 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271294480] [2020-11-28 02:59:07,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:59:07,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:59:07,163 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:59:07,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:59:07,202 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:59:07,227 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:59:07,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:59:07,231 INFO L82 PathProgramCache]: Analyzing trace with hash 1450930, now seen corresponding path program 1 times [2020-11-28 02:59:07,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:59:07,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290888607] [2020-11-28 02:59:07,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:59:07,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:59:07,249 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:59:07,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:59:07,256 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:59:07,261 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:59:07,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:59:07,268 INFO L82 PathProgramCache]: Analyzing trace with hash 1832919281, now seen corresponding path program 1 times [2020-11-28 02:59:07,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:59:07,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279015829] [2020-11-28 02:59:07,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:59:07,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:59:07,302 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:59:07,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:59:07,336 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:59:07,347 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:59:07,506 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 02:59:07,507 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 02:59:07,507 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 02:59:07,507 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 02:59:07,507 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-28 02:59:07,508 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:59:07,508 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 02:59:07,508 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 02:59:07,508 INFO L133 ssoRankerPreferences]: Filename of dumped script: Addition03-1.c_Iteration1_Loop [2020-11-28 02:59:07,508 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 02:59:07,508 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 02:59:07,525 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:59:07,532 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:59:07,539 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:59:07,543 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:59:07,547 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:59:07,565 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:59:07,569 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:59:07,680 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 02:59:07,681 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d3c027e-dc7b-459f-87f9-13774f88c11e/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) [2020-11-28 02:59:07,688 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 02:59:07,688 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:59:07,697 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 02:59:07,697 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {addition_~m=0} Honda state: {addition_~m=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d3c027e-dc7b-459f-87f9-13774f88c11e/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) [2020-11-28 02:59:07,742 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 02:59:07,742 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d3c027e-dc7b-459f-87f9-13774f88c11e/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:59:07,786 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-28 02:59:07,786 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 02:59:07,802 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 02:59:07,802 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {addition_#in~m=0} Honda state: {addition_#in~m=0} Generalized eigenvectors: [{addition_#in~m=-1}, {addition_#in~m=-1}, {addition_#in~m=3}] Lambdas: [1, 4, 1] Nus: [0, 1] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d3c027e-dc7b-459f-87f9-13774f88c11e/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:59:07,833 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 02:59:07,833 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 02:59:07,840 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 02:59:07,840 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {addition_#t~ret8=0} Honda state: {addition_#t~ret8=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d3c027e-dc7b-459f-87f9-13774f88c11e/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:59:07,878 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 02:59:07,878 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 02:59:07,884 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 02:59:07,884 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {addition_#res=0} Honda state: {addition_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d3c027e-dc7b-459f-87f9-13774f88c11e/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:59:07,916 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 02:59:07,916 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d3c027e-dc7b-459f-87f9-13774f88c11e/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:59:07,954 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-28 02:59:07,954 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 02:59:08,020 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-28 02:59:08,021 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 02:59:08,021 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 02:59:08,022 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 02:59:08,022 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 02:59:08,022 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 02:59:08,022 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:59:08,022 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 02:59:08,022 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 02:59:08,022 INFO L133 ssoRankerPreferences]: Filename of dumped script: Addition03-1.c_Iteration1_Loop [2020-11-28 02:59:08,022 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 02:59:08,023 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 02:59:08,024 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:59:08,042 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:59:08,059 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:59:08,075 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:59:08,080 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:59:08,086 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:59:08,090 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:59:08,182 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 02:59:08,186 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d3c027e-dc7b-459f-87f9-13774f88c11e/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) [2020-11-28 02:59:08,208 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 02:59:08,210 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:59:08,211 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 02:59:08,211 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:59:08,211 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:59:08,211 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:59:08,213 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 02:59:08,213 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:59:08,216 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d3c027e-dc7b-459f-87f9-13774f88c11e/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) [2020-11-28 02:59:08,251 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 02:59:08,252 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:59:08,252 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 02:59:08,252 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:59:08,253 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:59:08,253 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:59:08,253 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 02:59:08,254 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 [2020-11-28 02:59:08,255 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d3c027e-dc7b-459f-87f9-13774f88c11e/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) [2020-11-28 02:59:08,301 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 02:59:08,303 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:59:08,303 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 02:59:08,303 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:59:08,303 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:59:08,303 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:59:08,304 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 02:59:08,304 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 02:59:08,307 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d3c027e-dc7b-459f-87f9-13774f88c11e/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) [2020-11-28 02:59:08,342 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 02:59:08,344 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:59:08,344 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 02:59:08,344 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:59:08,345 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:59:08,345 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:59:08,347 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 02:59:08,347 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 [2020-11-28 02:59:08,351 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d3c027e-dc7b-459f-87f9-13774f88c11e/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:59:08,415 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 02:59:08,417 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:59:08,417 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 02:59:08,417 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:59:08,417 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:59:08,417 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:59:08,418 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 02:59:08,418 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 02:59:08,420 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d3c027e-dc7b-459f-87f9-13774f88c11e/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:59:08,446 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 02:59:08,447 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:59:08,448 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 02:59:08,448 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:59:08,448 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:59:08,448 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:59:08,449 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 02:59:08,449 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 02:59:08,453 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d3c027e-dc7b-459f-87f9-13774f88c11e/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) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:59:08,477 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 02:59:08,479 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:59:08,479 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 02:59:08,479 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:59:08,479 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:59:08,479 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:59:08,481 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 02:59:08,481 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 02:59:08,486 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 02:59:08,490 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-28 02:59:08,490 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d3c027e-dc7b-459f-87f9-13774f88c11e/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 [2020-11-28 02:59:08,509 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-28 02:59:08,510 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-28 02:59:08,510 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 02:59:08,510 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(addition_#in~n) = 1*addition_#in~n Supporting invariants [] [2020-11-28 02:59:08,532 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-28 02:59:08,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:59:08,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:59:08,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 02:59:08,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:59:08,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:59:08,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-28 02:59:08,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:59:08,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:59:08,740 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2020-11-28 02:59:08,741 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 20 states. Second operand 4 states. [2020-11-28 02:59:08,872 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 20 states.. Second operand 4 states. Result 50 states and 68 transitions. Complement of second has 12 states. [2020-11-28 02:59:08,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-28 02:59:08,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-28 02:59:08,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2020-11-28 02:59:08,876 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 3 letters. Loop has 4 letters. [2020-11-28 02:59:08,878 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 02:59:08,878 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 7 letters. Loop has 4 letters. [2020-11-28 02:59:08,878 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 02:59:08,878 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 3 letters. Loop has 8 letters. [2020-11-28 02:59:08,878 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 02:59:08,879 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 50 states and 68 transitions. [2020-11-28 02:59:08,884 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2020-11-28 02:59:08,889 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 50 states to 25 states and 28 transitions. [2020-11-28 02:59:08,890 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2020-11-28 02:59:08,890 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2020-11-28 02:59:08,890 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 28 transitions. [2020-11-28 02:59:08,891 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-28 02:59:08,891 INFO L691 BuchiCegarLoop]: Abstraction has 25 states and 28 transitions. [2020-11-28 02:59:08,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states and 28 transitions. [2020-11-28 02:59:08,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 16. [2020-11-28 02:59:08,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-28 02:59:08,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2020-11-28 02:59:08,912 INFO L714 BuchiCegarLoop]: Abstraction has 16 states and 19 transitions. [2020-11-28 02:59:08,913 INFO L594 BuchiCegarLoop]: Abstraction has 16 states and 19 transitions. [2020-11-28 02:59:08,913 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-28 02:59:08,913 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 19 transitions. [2020-11-28 02:59:08,915 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2020-11-28 02:59:08,915 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 02:59:08,915 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 02:59:08,915 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-28 02:59:08,915 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2020-11-28 02:59:08,916 INFO L794 eck$LassoCheckResult]: Stem: 136#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(15);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 126#L-1 havoc main_#res;havoc main_#t~nondet9, main_#t~nondet10, main_#t~ret11, main_~m~0, main_~n~0, main_~result~0;main_~m~0 := main_#t~nondet9;havoc main_#t~nondet9;main_~n~0 := main_#t~nondet10;havoc main_#t~nondet10; 127#L31 call main_#t~ret11 := addition(main_~m~0, main_~n~0);< 128#additionENTRY ~m := #in~m;~n := #in~n; 130#L16 assume !(0 == ~n); 137#L19 assume !(~n > 0); 138#L22 [2020-11-28 02:59:08,916 INFO L796 eck$LassoCheckResult]: Loop: 138#L22 assume ~n < 0; 134#L23 call #t~ret8 := addition(~m - 1, 1 + ~n);< 135#additionENTRY ~m := #in~m;~n := #in~n; 141#L16 assume !(0 == ~n); 140#L19 assume !(~n > 0); 138#L22 [2020-11-28 02:59:08,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:59:08,916 INFO L82 PathProgramCache]: Analyzing trace with hash 890410423, now seen corresponding path program 1 times [2020-11-28 02:59:08,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:59:08,917 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590778706] [2020-11-28 02:59:08,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:59:08,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:59:08,928 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:59:08,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:59:08,936 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:59:08,940 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:59:08,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:59:08,941 INFO L82 PathProgramCache]: Analyzing trace with hash 57513645, now seen corresponding path program 1 times [2020-11-28 02:59:08,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:59:08,941 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188561717] [2020-11-28 02:59:08,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:59:08,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:59:08,946 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:59:08,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:59:08,949 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:59:08,951 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:59:08,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:59:08,951 INFO L82 PathProgramCache]: Analyzing trace with hash -1572724041, now seen corresponding path program 1 times [2020-11-28 02:59:08,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:59:08,952 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506935682] [2020-11-28 02:59:08,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:59:08,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:59:08,965 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:59:08,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:59:08,978 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:59:08,983 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:59:09,110 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 02:59:09,110 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 02:59:09,110 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 02:59:09,110 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 02:59:09,110 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-28 02:59:09,110 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:59:09,110 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 02:59:09,110 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 02:59:09,110 INFO L133 ssoRankerPreferences]: Filename of dumped script: Addition03-1.c_Iteration2_Loop [2020-11-28 02:59:09,110 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 02:59:09,110 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 02:59:09,111 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:59:09,118 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:59:09,121 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:59:09,150 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:59:09,153 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:59:09,239 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 02:59:09,239 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d3c027e-dc7b-459f-87f9-13774f88c11e/bin/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 02:59:09,248 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 02:59:09,248 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d3c027e-dc7b-459f-87f9-13774f88c11e/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) [2020-11-28 02:59:09,295 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-28 02:59:09,295 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:59:09,417 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 02:59:09,418 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {addition_#in~m=-2, addition_~m=-2} Honda state: {addition_#in~m=-2, addition_~m=-2} Generalized eigenvectors: [{addition_#in~m=-2, addition_~m=-2}, {addition_#in~m=1, addition_~m=1}, {addition_#in~m=0, addition_~m=0}] Lambdas: [1, 1, 15] Nus: [0, 0] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d3c027e-dc7b-459f-87f9-13774f88c11e/bin/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:59:09,452 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 02:59:09,452 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 02:59:09,455 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 02:59:09,455 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {addition_#res=0} Honda state: {addition_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d3c027e-dc7b-459f-87f9-13774f88c11e/bin/uautomizer/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:59:09,479 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 02:59:09,479 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d3c027e-dc7b-459f-87f9-13774f88c11e/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 [2020-11-28 02:59:09,506 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-28 02:59:09,506 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 02:59:19,118 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-28 02:59:19,120 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 02:59:19,121 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 02:59:19,121 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 02:59:19,121 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 02:59:19,121 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 02:59:19,121 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:59:19,121 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 02:59:19,121 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 02:59:19,121 INFO L133 ssoRankerPreferences]: Filename of dumped script: Addition03-1.c_Iteration2_Loop [2020-11-28 02:59:19,121 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 02:59:19,121 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 02:59:19,123 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:59:19,130 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:59:19,136 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:59:19,164 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:59:19,188 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:59:19,290 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 02:59:19,290 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d3c027e-dc7b-459f-87f9-13774f88c11e/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) [2020-11-28 02:59:19,294 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 02:59:19,296 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:59:19,296 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 02:59:19,296 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:59:19,296 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:59:19,297 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:59:19,298 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 02:59:19,298 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:59:19,301 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d3c027e-dc7b-459f-87f9-13774f88c11e/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) [2020-11-28 02:59:19,338 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 02:59:19,340 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:59:19,340 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 02:59:19,340 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:59:19,340 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:59:19,340 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:59:19,342 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 02:59:19,342 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:59:19,348 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d3c027e-dc7b-459f-87f9-13774f88c11e/bin/uautomizer/z3 Starting monitored process 24 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 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:59:19,384 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 02:59:19,391 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:59:19,391 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 02:59:19,391 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:59:19,391 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:59:19,391 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:59:19,393 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 02:59:19,393 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 02:59:19,396 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 02:59:19,401 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-28 02:59:19,401 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d3c027e-dc7b-459f-87f9-13774f88c11e/bin/uautomizer/z3 Starting monitored process 25 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 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:59:19,403 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-28 02:59:19,404 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-28 02:59:19,404 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 02:59:19,404 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(addition_~n) = -1*addition_~n Supporting invariants [] [2020-11-28 02:59:19,423 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-28 02:59:19,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:59:19,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:59:19,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 02:59:19,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:59:19,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:59:19,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-28 02:59:19,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:59:19,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:59:19,580 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2020-11-28 02:59:19,580 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 19 transitions. cyclomatic complexity: 5 Second operand 5 states. [2020-11-28 02:59:19,626 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 19 transitions. cyclomatic complexity: 5. Second operand 5 states. Result 30 states and 35 transitions. Complement of second has 13 states. [2020-11-28 02:59:19,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2020-11-28 02:59:19,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-11-28 02:59:19,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 15 transitions. [2020-11-28 02:59:19,629 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 6 letters. Loop has 5 letters. [2020-11-28 02:59:19,629 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 02:59:19,629 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 11 letters. Loop has 5 letters. [2020-11-28 02:59:19,629 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 02:59:19,629 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 6 letters. Loop has 10 letters. [2020-11-28 02:59:19,630 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 02:59:19,630 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 30 states and 35 transitions. [2020-11-28 02:59:19,631 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2020-11-28 02:59:19,632 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 30 states to 25 states and 29 transitions. [2020-11-28 02:59:19,632 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2020-11-28 02:59:19,633 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2020-11-28 02:59:19,633 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 29 transitions. [2020-11-28 02:59:19,633 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-28 02:59:19,634 INFO L691 BuchiCegarLoop]: Abstraction has 25 states and 29 transitions. [2020-11-28 02:59:19,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states and 29 transitions. [2020-11-28 02:59:19,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2020-11-28 02:59:19,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-28 02:59:19,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2020-11-28 02:59:19,642 INFO L714 BuchiCegarLoop]: Abstraction has 23 states and 27 transitions. [2020-11-28 02:59:19,642 INFO L594 BuchiCegarLoop]: Abstraction has 23 states and 27 transitions. [2020-11-28 02:59:19,642 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-28 02:59:19,642 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 23 states and 27 transitions. [2020-11-28 02:59:19,644 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2020-11-28 02:59:19,645 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 02:59:19,645 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 02:59:19,646 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:59:19,646 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-11-28 02:59:19,646 INFO L794 eck$LassoCheckResult]: Stem: 250#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(15);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 240#L-1 havoc main_#res;havoc main_#t~nondet9, main_#t~nondet10, main_#t~ret11, main_~m~0, main_~n~0, main_~result~0;main_~m~0 := main_#t~nondet9;havoc main_#t~nondet9;main_~n~0 := main_#t~nondet10;havoc main_#t~nondet10; 238#L31 call main_#t~ret11 := addition(main_~m~0, main_~n~0);< 239#additionENTRY ~m := #in~m;~n := #in~n; 253#L16 assume !(0 == ~n); 254#L19 assume !(~n > 0); 256#L22 assume ~n < 0; 246#L23 call #t~ret8 := addition(~m - 1, 1 + ~n);< 245#additionENTRY ~m := #in~m;~n := #in~n; 247#L16 assume !(0 == ~n); 251#L19 assume ~n > 0; 242#L20 [2020-11-28 02:59:19,647 INFO L796 eck$LassoCheckResult]: Loop: 242#L20 call #t~ret7 := addition(1 + ~m, ~n - 1);< 241#additionENTRY ~m := #in~m;~n := #in~n; 244#L16 assume !(0 == ~n); 260#L19 assume ~n > 0; 242#L20 [2020-11-28 02:59:19,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:59:19,647 INFO L82 PathProgramCache]: Analyzing trace with hash -1572724044, now seen corresponding path program 1 times [2020-11-28 02:59:19,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:59:19,648 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873059185] [2020-11-28 02:59:19,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:59:19,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:59:19,719 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:59:19,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873059185] [2020-11-28 02:59:19,719 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:59:19,720 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 02:59:19,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649374564] [2020-11-28 02:59:19,722 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-28 02:59:19,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:59:19,723 INFO L82 PathProgramCache]: Analyzing trace with hash 2042800, now seen corresponding path program 2 times [2020-11-28 02:59:19,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:59:19,723 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346914513] [2020-11-28 02:59:19,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:59:19,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:59:19,727 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:59:19,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:59:19,730 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:59:19,731 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:59:19,816 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 02:59:19,817 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 02:59:19,817 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 02:59:19,817 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 02:59:19,817 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-28 02:59:19,817 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:59:19,817 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 02:59:19,817 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 02:59:19,817 INFO L133 ssoRankerPreferences]: Filename of dumped script: Addition03-1.c_Iteration3_Loop [2020-11-28 02:59:19,817 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 02:59:19,817 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 02:59:19,819 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:59:19,828 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:59:19,830 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:59:19,832 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:59:19,835 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:59:19,899 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 02:59:19,899 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d3c027e-dc7b-459f-87f9-13774f88c11e/bin/uautomizer/z3 Starting monitored process 26 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 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:59:19,906 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 02:59:19,906 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d3c027e-dc7b-459f-87f9-13774f88c11e/bin/uautomizer/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 02:59:19,956 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-28 02:59:19,956 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:59:20,220 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 02:59:20,221 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {addition_#in~m=-4, addition_~m=-4} Honda state: {addition_#in~m=-4, addition_~m=-4} Generalized eigenvectors: [{addition_#in~m=-3, addition_~m=-3}, {addition_#in~m=4, addition_~m=4}, {addition_#in~m=0, addition_~m=0}] Lambdas: [1, 1, 14] Nus: [0, 1] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d3c027e-dc7b-459f-87f9-13774f88c11e/bin/uautomizer/z3 Starting monitored process 28 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 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:59:20,254 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 02:59:20,254 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 02:59:20,258 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 02:59:20,258 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {addition_#t~ret7=0} Honda state: {addition_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d3c027e-dc7b-459f-87f9-13774f88c11e/bin/uautomizer/z3 Starting monitored process 29 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 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:59:20,285 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 02:59:20,285 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 02:59:20,288 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 02:59:20,288 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {addition_#t~ret8=0} Honda state: {addition_#t~ret8=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d3c027e-dc7b-459f-87f9-13774f88c11e/bin/uautomizer/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 02:59:20,310 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 02:59:20,310 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:59:20,314 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 02:59:20,315 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {addition_#res=0} Honda state: {addition_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d3c027e-dc7b-459f-87f9-13774f88c11e/bin/uautomizer/z3 Starting monitored process 31 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 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:59:20,336 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 02:59:20,336 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d3c027e-dc7b-459f-87f9-13774f88c11e/bin/uautomizer/z3 Starting monitored process 32 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 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:59:20,371 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-28 02:59:20,371 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 02:59:21,863 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-28 02:59:21,865 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 02:59:21,865 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 02:59:21,865 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 02:59:21,865 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 02:59:21,865 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 02:59:21,865 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:59:21,865 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 02:59:21,865 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 02:59:21,865 INFO L133 ssoRankerPreferences]: Filename of dumped script: Addition03-1.c_Iteration3_Loop [2020-11-28 02:59:21,865 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 02:59:21,866 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 02:59:21,867 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:59:21,890 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:59:21,893 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:59:21,904 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:59:21,945 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:59:22,020 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 02:59:22,021 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d3c027e-dc7b-459f-87f9-13774f88c11e/bin/uautomizer/z3 Starting monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 02:59:22,029 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 02:59:22,031 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:59:22,031 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 02:59:22,032 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:59:22,032 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:59:22,032 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:59:22,033 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 02:59:22,033 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:59:22,036 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d3c027e-dc7b-459f-87f9-13774f88c11e/bin/uautomizer/z3 Starting monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 02:59:22,073 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 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:59:22,074 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:59:22,074 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 02:59:22,075 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:59:22,075 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:59:22,075 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:59:22,075 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 02:59:22,075 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 02:59:22,077 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d3c027e-dc7b-459f-87f9-13774f88c11e/bin/uautomizer/z3 Starting monitored process 35 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 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:59:22,116 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 02:59:22,118 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:59:22,118 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 02:59:22,118 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:59:22,118 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:59:22,118 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:59:22,119 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 02:59:22,119 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 02:59:22,120 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d3c027e-dc7b-459f-87f9-13774f88c11e/bin/uautomizer/z3 Starting monitored process 36 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 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:59:22,150 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 02:59:22,152 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:59:22,152 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 02:59:22,152 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:59:22,152 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:59:22,153 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:59:22,155 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 02:59:22,155 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 02:59:22,161 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 02:59:22,165 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-28 02:59:22,166 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d3c027e-dc7b-459f-87f9-13774f88c11e/bin/uautomizer/z3 Starting monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 02:59:22,170 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-28 02:59:22,170 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-28 02:59:22,170 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 02:59:22,170 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(addition_~n) = 1*addition_~n Supporting invariants [] Waiting until toolchain timeout for monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:59:22,201 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-28 02:59:22,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:59:22,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:59:22,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-28 02:59:22,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:59:22,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:59:22,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-28 02:59:22,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:59:22,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:59:22,316 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2020-11-28 02:59:22,316 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 23 states and 27 transitions. cyclomatic complexity: 7 Second operand 4 states. [2020-11-28 02:59:22,378 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 23 states and 27 transitions. cyclomatic complexity: 7. Second operand 4 states. Result 55 states and 63 transitions. Complement of second has 9 states. [2020-11-28 02:59:22,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-28 02:59:22,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-28 02:59:22,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2020-11-28 02:59:22,381 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 11 letters. Loop has 4 letters. [2020-11-28 02:59:22,382 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 02:59:22,382 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 15 letters. Loop has 4 letters. [2020-11-28 02:59:22,382 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 02:59:22,382 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 11 letters. Loop has 8 letters. [2020-11-28 02:59:22,382 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 02:59:22,383 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 55 states and 63 transitions. [2020-11-28 02:59:22,385 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2020-11-28 02:59:22,387 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 55 states to 47 states and 55 transitions. [2020-11-28 02:59:22,387 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 23 [2020-11-28 02:59:22,388 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 25 [2020-11-28 02:59:22,388 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 55 transitions. [2020-11-28 02:59:22,388 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-28 02:59:22,388 INFO L691 BuchiCegarLoop]: Abstraction has 47 states and 55 transitions. [2020-11-28 02:59:22,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states and 55 transitions. [2020-11-28 02:59:22,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 41. [2020-11-28 02:59:22,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-11-28 02:59:22,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2020-11-28 02:59:22,396 INFO L714 BuchiCegarLoop]: Abstraction has 41 states and 48 transitions. [2020-11-28 02:59:22,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:59:22,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 02:59:22,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:59:22,400 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand 5 states. [2020-11-28 02:59:22,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:59:22,442 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2020-11-28 02:59:22,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 02:59:22,443 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 29 states and 31 transitions. [2020-11-28 02:59:22,444 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-28 02:59:22,444 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 29 states to 0 states and 0 transitions. [2020-11-28 02:59:22,444 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-28 02:59:22,444 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-28 02:59:22,444 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-28 02:59:22,444 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-28 02:59:22,444 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 02:59:22,445 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 02:59:22,445 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 02:59:22,445 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-28 02:59:22,445 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-11-28 02:59:22,445 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-28 02:59:22,445 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-11-28 02:59:22,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 02:59:22 BoogieIcfgContainer [2020-11-28 02:59:22,450 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-28 02:59:22,450 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 02:59:22,450 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 02:59:22,451 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 02:59:22,451 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:59:06" (3/4) ... [2020-11-28 02:59:22,454 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-28 02:59:22,454 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 02:59:22,456 INFO L168 Benchmark]: Toolchain (without parser) took 16338.68 ms. Allocated memory was 109.1 MB in the beginning and 142.6 MB in the end (delta: 33.6 MB). Free memory was 73.4 MB in the beginning and 73.3 MB in the end (delta: 156.7 kB). Peak memory consumption was 33.5 MB. Max. memory is 16.1 GB. [2020-11-28 02:59:22,456 INFO L168 Benchmark]: CDTParser took 0.74 ms. Allocated memory is still 109.1 MB. Free memory is still 89.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:59:22,457 INFO L168 Benchmark]: CACSL2BoogieTranslator took 262.05 ms. Allocated memory is still 109.1 MB. Free memory was 73.2 MB in the beginning and 85.6 MB in the end (delta: -12.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 02:59:22,457 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.16 ms. Allocated memory is still 109.1 MB. Free memory was 85.6 MB in the beginning and 84.5 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:59:22,458 INFO L168 Benchmark]: Boogie Preprocessor took 26.10 ms. Allocated memory is still 109.1 MB. Free memory was 84.5 MB in the beginning and 83.5 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:59:22,458 INFO L168 Benchmark]: RCFGBuilder took 455.26 ms. Allocated memory is still 109.1 MB. Free memory was 83.5 MB in the beginning and 71.8 MB in the end (delta: 11.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 02:59:22,459 INFO L168 Benchmark]: BuchiAutomizer took 15548.99 ms. Allocated memory was 109.1 MB in the beginning and 142.6 MB in the end (delta: 33.6 MB). Free memory was 71.3 MB in the beginning and 74.3 MB in the end (delta: -2.9 MB). Peak memory consumption was 32.0 MB. Max. memory is 16.1 GB. [2020-11-28 02:59:22,459 INFO L168 Benchmark]: Witness Printer took 3.77 ms. Allocated memory is still 142.6 MB. Free memory was 74.3 MB in the beginning and 73.3 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:59:22,463 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.74 ms. Allocated memory is still 109.1 MB. Free memory is still 89.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 262.05 ms. Allocated memory is still 109.1 MB. Free memory was 73.2 MB in the beginning and 85.6 MB in the end (delta: -12.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 34.16 ms. Allocated memory is still 109.1 MB. Free memory was 85.6 MB in the beginning and 84.5 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.10 ms. Allocated memory is still 109.1 MB. Free memory was 84.5 MB in the beginning and 83.5 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 455.26 ms. Allocated memory is still 109.1 MB. Free memory was 83.5 MB in the beginning and 71.8 MB in the end (delta: 11.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 15548.99 ms. Allocated memory was 109.1 MB in the beginning and 142.6 MB in the end (delta: 33.6 MB). Free memory was 71.3 MB in the beginning and 74.3 MB in the end (delta: -2.9 MB). Peak memory consumption was 32.0 MB. Max. memory is 16.1 GB. * Witness Printer took 3.77 ms. Allocated memory is still 142.6 MB. Free memory was 74.3 MB in the beginning and 73.3 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (1 trivial, 3 deterministic, 0 nondeterministic). One deterministic module has affine ranking function \old(n) and consists of 4 locations. One deterministic module has affine ranking function -1 * n and consists of 5 locations. One deterministic module has affine ranking function n and consists of 4 locations. 1 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 15.4s and 4 iterations. TraceHistogramMax:2. Analysis of lassos took 14.5s. Construction of modules took 0.1s. Büchi inclusion checks took 0.6s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 17 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 23 states and ocurred in iteration 2. Nontrivial modules had stage [3, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 37 SDtfs, 51 SDslu, 17 SDs, 0 SdLazy, 87 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital21 mio100 ax100 hnf100 lsp66 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq169 hnf93 smp91 dnf100 smp100 tf110 neg98 sie109 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 28ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 7 LassoNonterminationAnalysisSatUnbounded: 3 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 11.9s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...