./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_a446cc0b-d660-4b76-9228-7e6fc0888611/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_a446cc0b-d660-4b76-9228-7e6fc0888611/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a446cc0b-d660-4b76-9228-7e6fc0888611/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a446cc0b-d660-4b76-9228-7e6fc0888611/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/recursive/Addition03-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_a446cc0b-d660-4b76-9228-7e6fc0888611/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a446cc0b-d660-4b76-9228-7e6fc0888611/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 [2020-11-30 00:29:51,217 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:29:51,230 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:29:51,283 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:29:51,284 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:29:51,285 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:29:51,287 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:29:51,289 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:29:51,291 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:29:51,292 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:29:51,293 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:29:51,295 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:29:51,295 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:29:51,296 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:29:51,298 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:29:51,299 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:29:51,300 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:29:51,301 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:29:51,303 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:29:51,305 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:29:51,307 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:29:51,309 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:29:51,310 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:29:51,311 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:29:51,315 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:29:51,315 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:29:51,315 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:29:51,316 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:29:51,317 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:29:51,318 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:29:51,319 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:29:51,319 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:29:51,320 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:29:51,321 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:29:51,322 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:29:51,323 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:29:51,324 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:29:51,324 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:29:51,325 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:29:51,326 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:29:51,326 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:29:51,327 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a446cc0b-d660-4b76-9228-7e6fc0888611/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-11-30 00:29:51,351 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:29:51,352 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:29:51,353 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:29:51,353 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:29:51,354 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:29:51,354 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-30 00:29:51,355 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-30 00:29:51,355 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-30 00:29:51,355 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-30 00:29:51,356 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-30 00:29:51,356 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-30 00:29:51,356 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:29:51,357 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:29:51,357 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-30 00:29:51,357 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 00:29:51,357 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:29:51,357 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:29:51,358 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-30 00:29:51,358 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-30 00:29:51,358 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-30 00:29:51,358 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:29:51,359 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:29:51,359 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-30 00:29:51,359 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:29:51,359 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-30 00:29:51,359 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:29:51,360 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:29:51,360 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-30 00:29:51,360 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:29:51,360 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 00:29:51,361 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:29:51,361 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-30 00:29:51,362 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-30 00:29:51,362 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_a446cc0b-d660-4b76-9228-7e6fc0888611/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_a446cc0b-d660-4b76-9228-7e6fc0888611/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b2edae58c49fda124d3cdef0e9085ec6493b5502 [2020-11-30 00:29:51,582 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:29:51,605 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:29:51,608 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:29:51,609 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:29:51,610 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:29:51,610 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a446cc0b-d660-4b76-9228-7e6fc0888611/bin/uautomizer/../../sv-benchmarks/c/recursive/Addition03-1.c [2020-11-30 00:29:51,678 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a446cc0b-d660-4b76-9228-7e6fc0888611/bin/uautomizer/data/177fd7dea/a57350d5a2cd4b2783d8fc98cc54c7e0/FLAGeb1b73b3c [2020-11-30 00:29:52,071 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:29:52,071 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a446cc0b-d660-4b76-9228-7e6fc0888611/sv-benchmarks/c/recursive/Addition03-1.c [2020-11-30 00:29:52,081 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a446cc0b-d660-4b76-9228-7e6fc0888611/bin/uautomizer/data/177fd7dea/a57350d5a2cd4b2783d8fc98cc54c7e0/FLAGeb1b73b3c [2020-11-30 00:29:52,478 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a446cc0b-d660-4b76-9228-7e6fc0888611/bin/uautomizer/data/177fd7dea/a57350d5a2cd4b2783d8fc98cc54c7e0 [2020-11-30 00:29:52,480 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:29:52,482 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:29:52,483 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:29:52,484 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:29:52,487 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:29:52,492 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:29:52" (1/1) ... [2020-11-30 00:29:52,494 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e1c9d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:29:52, skipping insertion in model container [2020-11-30 00:29:52,494 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:29:52" (1/1) ... [2020-11-30 00:29:52,501 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:29:52,514 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:29:52,664 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:29:52,673 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:29:52,694 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:29:52,720 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:29:52,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:29:52 WrapperNode [2020-11-30 00:29:52,720 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:29:52,722 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:29:52,722 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:29:52,722 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:29:52,728 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:29:52" (1/1) ... [2020-11-30 00:29:52,739 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:29:52" (1/1) ... [2020-11-30 00:29:52,752 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:29:52,753 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:29:52,753 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:29:52,753 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:29:52,759 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:29:52" (1/1) ... [2020-11-30 00:29:52,759 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:29:52" (1/1) ... [2020-11-30 00:29:52,760 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:29:52" (1/1) ... [2020-11-30 00:29:52,761 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:29:52" (1/1) ... [2020-11-30 00:29:52,763 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:29:52" (1/1) ... [2020-11-30 00:29:52,765 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:29:52" (1/1) ... [2020-11-30 00:29:52,766 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:29:52" (1/1) ... [2020-11-30 00:29:52,767 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:29:52,768 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:29:52,768 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:29:52,769 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:29:52,769 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:29:52" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a446cc0b-d660-4b76-9228-7e6fc0888611/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 [2020-11-30 00:29:52,838 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:29:52,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:29:52,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 00:29:52,840 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:29:52,841 INFO L130 BoogieDeclarations]: Found specification of procedure addition [2020-11-30 00:29:52,843 INFO L138 BoogieDeclarations]: Found implementation of procedure addition [2020-11-30 00:29:53,035 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:29:53,035 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-30 00:29:53,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:29:53 BoogieIcfgContainer [2020-11-30 00:29:53,045 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:29:53,046 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-30 00:29:53,046 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-30 00:29:53,055 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-30 00:29:53,055 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 00:29:53,056 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 30.11 12:29:52" (1/3) ... [2020-11-30 00:29:53,059 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2238643f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 30.11 12:29:53, skipping insertion in model container [2020-11-30 00:29:53,060 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 00:29:53,060 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:29:52" (2/3) ... [2020-11-30 00:29:53,060 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2238643f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 30.11 12:29:53, skipping insertion in model container [2020-11-30 00:29:53,060 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 00:29:53,061 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:29:53" (3/3) ... [2020-11-30 00:29:53,062 INFO L373 chiAutomizerObserver]: Analyzing ICFG Addition03-1.c [2020-11-30 00:29:53,135 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-30 00:29:53,135 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-30 00:29:53,136 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-30 00:29:53,136 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:29:53,136 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:29:53,136 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-30 00:29:53,136 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:29:53,137 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-30 00:29:53,153 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states. [2020-11-30 00:29:53,175 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2020-11-30 00:29:53,175 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:29:53,175 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:29:53,180 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-11-30 00:29:53,181 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-11-30 00:29:53,181 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-30 00:29:53,181 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states. [2020-11-30 00:29:53,184 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2020-11-30 00:29:53,184 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:29:53,184 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:29:53,185 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-11-30 00:29:53,185 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-11-30 00:29:53,190 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 [2020-11-30 00:29:53,190 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 [2020-11-30 00:29:53,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:29:53,195 INFO L82 PathProgramCache]: Analyzing trace with hash 29888, now seen corresponding path program 1 times [2020-11-30 00:29:53,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:29:53,205 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132647413] [2020-11-30 00:29:53,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:29:53,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:29:53,290 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:29:53,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:29:53,308 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:29:53,327 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:29:53,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:29:53,329 INFO L82 PathProgramCache]: Analyzing trace with hash 1450930, now seen corresponding path program 1 times [2020-11-30 00:29:53,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:29:53,329 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254725020] [2020-11-30 00:29:53,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:29:53,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:29:53,337 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:29:53,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:29:53,342 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:29:53,344 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:29:53,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:29:53,346 INFO L82 PathProgramCache]: Analyzing trace with hash 1832919281, now seen corresponding path program 1 times [2020-11-30 00:29:53,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:29:53,347 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250467956] [2020-11-30 00:29:53,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:29:53,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:29:53,367 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:29:53,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:29:53,386 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:29:53,393 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:29:53,595 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:29:53,596 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:29:53,596 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:29:53,596 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:29:53,597 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-30 00:29:53,597 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:29:53,597 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:29:53,597 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:29:53,597 INFO L133 ssoRankerPreferences]: Filename of dumped script: Addition03-1.c_Iteration1_Loop [2020-11-30 00:29:53,598 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:29:53,598 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:29:53,615 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:29:53,627 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:29:53,634 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:29:53,638 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:29:53,642 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:29:53,650 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:29:53,654 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:29:53,725 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:29:53,726 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a446cc0b-d660-4b76-9228-7e6fc0888611/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) [2020-11-30 00:29:53,732 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:29:53,733 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 [2020-11-30 00:29:53,743 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:29:53,744 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_a446cc0b-d660-4b76-9228-7e6fc0888611/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:29:53,780 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:29:53,780 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a446cc0b-d660-4b76-9228-7e6fc0888611/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) [2020-11-30 00:29:53,833 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-30 00:29:53,833 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:29:53,850 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:29:53,851 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_a446cc0b-d660-4b76-9228-7e6fc0888611/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) [2020-11-30 00:29:53,902 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:29:53,902 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:29:53,909 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:29:53,909 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_a446cc0b-d660-4b76-9228-7e6fc0888611/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) [2020-11-30 00:29:53,952 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:29:53,953 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 00:29:53,966 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:29:53,967 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {addition_#res=0} Honda state: {addition_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a446cc0b-d660-4b76-9228-7e6fc0888611/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 [2020-11-30 00:29:53,995 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:29:53,996 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a446cc0b-d660-4b76-9228-7e6fc0888611/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 [2020-11-30 00:29:54,020 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-30 00:29:54,020 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 00:29:54,083 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-30 00:29:54,085 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:29:54,085 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:29:54,085 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:29:54,085 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:29:54,085 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-30 00:29:54,085 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:29:54,085 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:29:54,085 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:29:54,086 INFO L133 ssoRankerPreferences]: Filename of dumped script: Addition03-1.c_Iteration1_Loop [2020-11-30 00:29:54,086 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:29:54,086 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:29:54,087 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:29:54,115 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:29:54,120 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:29:54,141 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:29:54,147 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:29:54,150 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:29:54,153 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:29:54,268 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:29:54,272 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a446cc0b-d660-4b76-9228-7e6fc0888611/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) [2020-11-30 00:29:54,284 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 [2020-11-30 00:29:54,286 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:29:54,287 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:29:54,287 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:29:54,287 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:29:54,287 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:29:54,289 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:29:54,289 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 [2020-11-30 00:29:54,292 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a446cc0b-d660-4b76-9228-7e6fc0888611/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) [2020-11-30 00:29:54,333 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 [2020-11-30 00:29:54,335 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:29:54,335 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:29:54,335 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:29:54,335 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:29:54,335 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:29:54,336 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:29:54,336 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 [2020-11-30 00:29:54,339 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a446cc0b-d660-4b76-9228-7e6fc0888611/bin/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:29:54,385 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 [2020-11-30 00:29:54,394 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:29:54,394 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:29:54,394 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:29:54,394 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:29:54,394 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:29:54,395 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:29:54,395 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:29:54,398 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a446cc0b-d660-4b76-9228-7e6fc0888611/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:29:54,428 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 [2020-11-30 00:29:54,430 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:29:54,430 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:29:54,430 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:29:54,430 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:29:54,431 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:29:54,431 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:29:54,431 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:29:54,433 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a446cc0b-d660-4b76-9228-7e6fc0888611/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) [2020-11-30 00:29:54,477 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 [2020-11-30 00:29:54,478 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:29:54,479 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:29:54,479 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:29:54,479 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:29:54,479 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:29:54,480 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:29:54,480 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:29:54,482 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a446cc0b-d660-4b76-9228-7e6fc0888611/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 [2020-11-30 00:29:54,524 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 [2020-11-30 00:29:54,526 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:29:54,526 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:29:54,526 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:29:54,526 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:29:54,526 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:29:54,527 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:29:54,527 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:29:54,531 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a446cc0b-d660-4b76-9228-7e6fc0888611/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 [2020-11-30 00:29:54,552 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 [2020-11-30 00:29:54,554 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:29:54,554 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:29:54,554 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:29:54,554 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:29:54,554 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:29:54,555 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:29:54,556 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:29:54,560 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-30 00:29:54,563 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-30 00:29:54,563 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_a446cc0b-d660-4b76-9228-7e6fc0888611/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 [2020-11-30 00:29:54,589 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-30 00:29:54,589 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-30 00:29:54,589 INFO L510 LassoAnalysis]: Proved termination. [2020-11-30 00:29:54,590 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(addition_#in~n) = 1*addition_#in~n Supporting invariants [] [2020-11-30 00:29:54,612 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-30 00:29:54,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:29:54,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:29:54,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 00:29:54,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:29:54,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:29:54,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-30 00:29:54,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:29:54,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:29:54,805 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 [2020-11-30 00:29:54,806 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 20 states. Second operand 4 states. [2020-11-30 00:29:54,939 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. [2020-11-30 00:29:54,939 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 [2020-11-30 00:29:54,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-30 00:29:54,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2020-11-30 00:29:54,943 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 3 letters. Loop has 4 letters. [2020-11-30 00:29:54,944 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:29:54,944 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 7 letters. Loop has 4 letters. [2020-11-30 00:29:54,945 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:29:54,945 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 3 letters. Loop has 8 letters. [2020-11-30 00:29:54,945 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:29:54,946 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 50 states and 68 transitions. [2020-11-30 00:29:54,951 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2020-11-30 00:29:54,955 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 50 states to 25 states and 28 transitions. [2020-11-30 00:29:54,956 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2020-11-30 00:29:54,956 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2020-11-30 00:29:54,957 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 28 transitions. [2020-11-30 00:29:54,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 00:29:54,957 INFO L691 BuchiCegarLoop]: Abstraction has 25 states and 28 transitions. [2020-11-30 00:29:54,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states and 28 transitions. [2020-11-30 00:29:54,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 16. [2020-11-30 00:29:54,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-30 00:29:54,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2020-11-30 00:29:54,977 INFO L714 BuchiCegarLoop]: Abstraction has 16 states and 19 transitions. [2020-11-30 00:29:54,977 INFO L594 BuchiCegarLoop]: Abstraction has 16 states and 19 transitions. [2020-11-30 00:29:54,977 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-30 00:29:54,977 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 19 transitions. [2020-11-30 00:29:54,978 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2020-11-30 00:29:54,978 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:29:54,978 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:29:54,978 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-30 00:29:54,978 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2020-11-30 00:29:54,979 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 [2020-11-30 00:29:54,979 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 [2020-11-30 00:29:54,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:29:54,979 INFO L82 PathProgramCache]: Analyzing trace with hash 890410423, now seen corresponding path program 1 times [2020-11-30 00:29:54,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:29:54,980 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646201797] [2020-11-30 00:29:54,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:29:54,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:29:54,993 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:29:55,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:29:55,005 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:29:55,010 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:29:55,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:29:55,010 INFO L82 PathProgramCache]: Analyzing trace with hash 57513645, now seen corresponding path program 1 times [2020-11-30 00:29:55,010 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:29:55,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844698228] [2020-11-30 00:29:55,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:29:55,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:29:55,016 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:29:55,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:29:55,020 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:29:55,022 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:29:55,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:29:55,022 INFO L82 PathProgramCache]: Analyzing trace with hash -1572724041, now seen corresponding path program 1 times [2020-11-30 00:29:55,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:29:55,023 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372447013] [2020-11-30 00:29:55,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:29:55,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:29:55,037 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:29:55,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:29:55,076 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:29:55,089 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:29:55,209 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:29:55,209 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:29:55,210 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:29:55,210 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:29:55,210 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-30 00:29:55,210 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:29:55,210 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:29:55,210 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:29:55,210 INFO L133 ssoRankerPreferences]: Filename of dumped script: Addition03-1.c_Iteration2_Loop [2020-11-30 00:29:55,210 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:29:55,210 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:29:55,212 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:29:55,240 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:29:55,244 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:29:55,256 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:29:55,259 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:29:55,385 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:29:55,385 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a446cc0b-d660-4b76-9228-7e6fc0888611/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) [2020-11-30 00:29:55,390 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:29:55,390 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_a446cc0b-d660-4b76-9228-7e6fc0888611/bin/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:29:55,416 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-30 00:29:55,416 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 00:29:55,596 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:29:55,597 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_a446cc0b-d660-4b76-9228-7e6fc0888611/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 [2020-11-30 00:29:55,623 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:29:55,624 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 00:29:55,626 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:29:55,626 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_a446cc0b-d660-4b76-9228-7e6fc0888611/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 [2020-11-30 00:29:55,654 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:29:55,654 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a446cc0b-d660-4b76-9228-7e6fc0888611/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 [2020-11-30 00:29:55,685 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-30 00:29:55,686 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 00:30:04,885 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-30 00:30:04,887 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:30:04,888 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:30:04,888 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:30:04,888 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:30:04,888 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-30 00:30:04,888 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:30:04,888 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:30:04,888 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:30:04,888 INFO L133 ssoRankerPreferences]: Filename of dumped script: Addition03-1.c_Iteration2_Loop [2020-11-30 00:30:04,888 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:30:04,888 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:30:04,890 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:30:04,895 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:30:04,903 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:30:04,929 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:30:04,932 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:30:05,023 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:30:05,023 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a446cc0b-d660-4b76-9228-7e6fc0888611/bin/uautomizer/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:30:05,029 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 [2020-11-30 00:30:05,031 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:30:05,031 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:30:05,031 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:30:05,031 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:30:05,031 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:30:05,032 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:30:05,032 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:30:05,033 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a446cc0b-d660-4b76-9228-7e6fc0888611/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) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:30:05,053 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 [2020-11-30 00:30:05,055 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:30:05,055 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:30:05,055 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:30:05,055 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:30:05,056 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:30:05,057 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:30:05,057 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:30:05,063 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a446cc0b-d660-4b76-9228-7e6fc0888611/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) [2020-11-30 00:30:05,084 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 [2020-11-30 00:30:05,086 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:30:05,086 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:30:05,086 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:30:05,086 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:30:05,086 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:30:05,088 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:30:05,088 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:30:05,091 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-30 00:30:05,095 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-30 00:30:05,095 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_a446cc0b-d660-4b76-9228-7e6fc0888611/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 [2020-11-30 00:30:05,098 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-30 00:30:05,098 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-30 00:30:05,098 INFO L510 LassoAnalysis]: Proved termination. [2020-11-30 00:30:05,098 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(addition_~n) = -1*addition_~n Supporting invariants [] [2020-11-30 00:30:05,118 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-30 00:30:05,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:30:05,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:30:05,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 00:30:05,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:30:05,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:30:05,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-30 00:30:05,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:30:05,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:30:05,294 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 [2020-11-30 00:30:05,294 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 19 transitions. cyclomatic complexity: 5 Second operand 5 states. [2020-11-30 00:30:05,325 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. [2020-11-30 00:30:05,325 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 [2020-11-30 00:30:05,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-11-30 00:30:05,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 15 transitions. [2020-11-30 00:30:05,326 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 6 letters. Loop has 5 letters. [2020-11-30 00:30:05,326 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:30:05,327 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 11 letters. Loop has 5 letters. [2020-11-30 00:30:05,327 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:30:05,327 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 6 letters. Loop has 10 letters. [2020-11-30 00:30:05,327 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:30:05,328 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 30 states and 35 transitions. [2020-11-30 00:30:05,329 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2020-11-30 00:30:05,330 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 30 states to 25 states and 29 transitions. [2020-11-30 00:30:05,330 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2020-11-30 00:30:05,331 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2020-11-30 00:30:05,331 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 29 transitions. [2020-11-30 00:30:05,331 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 00:30:05,331 INFO L691 BuchiCegarLoop]: Abstraction has 25 states and 29 transitions. [2020-11-30 00:30:05,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states and 29 transitions. [2020-11-30 00:30:05,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2020-11-30 00:30:05,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-30 00:30:05,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2020-11-30 00:30:05,334 INFO L714 BuchiCegarLoop]: Abstraction has 23 states and 27 transitions. [2020-11-30 00:30:05,334 INFO L594 BuchiCegarLoop]: Abstraction has 23 states and 27 transitions. [2020-11-30 00:30:05,334 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-30 00:30:05,334 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 23 states and 27 transitions. [2020-11-30 00:30:05,335 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2020-11-30 00:30:05,335 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:30:05,335 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:30:05,335 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:30:05,336 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-11-30 00:30:05,336 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 [2020-11-30 00:30:05,336 INFO L796 eck$LassoCheckResult]: Loop: 242#L20 call #t~ret7 := addition(1 + ~m, ~n - 1);< 241#additionENTRY ~m := #in~m;~n := #in~n; 244#L16 assume !(0 == ~n); 260#L19 assume ~n > 0; 242#L20 [2020-11-30 00:30:05,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:30:05,336 INFO L82 PathProgramCache]: Analyzing trace with hash -1572724044, now seen corresponding path program 1 times [2020-11-30 00:30:05,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:30:05,337 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454765460] [2020-11-30 00:30:05,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:30:05,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:30:05,398 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:30:05,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454765460] [2020-11-30 00:30:05,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:30:05,400 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 00:30:05,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387582114] [2020-11-30 00:30:05,402 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-30 00:30:05,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:30:05,403 INFO L82 PathProgramCache]: Analyzing trace with hash 2042800, now seen corresponding path program 2 times [2020-11-30 00:30:05,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:30:05,403 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525078251] [2020-11-30 00:30:05,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:30:05,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:30:05,407 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:30:05,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:30:05,410 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:30:05,411 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:30:05,491 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:30:05,491 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:30:05,491 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:30:05,491 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:30:05,492 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-30 00:30:05,492 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:30:05,492 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:30:05,492 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:30:05,492 INFO L133 ssoRankerPreferences]: Filename of dumped script: Addition03-1.c_Iteration3_Loop [2020-11-30 00:30:05,492 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:30:05,492 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:30:05,493 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:30:05,509 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:30:05,511 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:30:05,513 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:30:05,516 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:30:05,641 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:30:05,641 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a446cc0b-d660-4b76-9228-7e6fc0888611/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) [2020-11-30 00:30:05,650 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:30:05,650 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a446cc0b-d660-4b76-9228-7e6fc0888611/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) Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:30:05,689 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-30 00:30:05,689 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 00:30:05,893 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:30:05,893 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_a446cc0b-d660-4b76-9228-7e6fc0888611/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 [2020-11-30 00:30:05,916 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:30:05,916 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 00:30:05,918 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:30:05,918 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_a446cc0b-d660-4b76-9228-7e6fc0888611/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) [2020-11-30 00:30:05,941 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:30:05,941 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:30:05,944 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:30:05,944 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_a446cc0b-d660-4b76-9228-7e6fc0888611/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) Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:30:05,969 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:30:05,969 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 00:30:05,971 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:30:05,971 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_a446cc0b-d660-4b76-9228-7e6fc0888611/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 [2020-11-30 00:30:05,992 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:30:05,992 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a446cc0b-d660-4b76-9228-7e6fc0888611/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) [2020-11-30 00:30:06,017 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-30 00:30:06,017 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:30:07,377 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-30 00:30:07,380 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:30:07,380 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:30:07,380 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:30:07,380 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:30:07,380 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-30 00:30:07,380 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:30:07,380 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:30:07,380 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:30:07,380 INFO L133 ssoRankerPreferences]: Filename of dumped script: Addition03-1.c_Iteration3_Loop [2020-11-30 00:30:07,380 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:30:07,381 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:30:07,382 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:30:07,394 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:30:07,397 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:30:07,400 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:30:07,407 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:30:07,467 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:30:07,467 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a446cc0b-d660-4b76-9228-7e6fc0888611/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) Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:30:07,472 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 [2020-11-30 00:30:07,474 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:30:07,474 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:30:07,474 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:30:07,474 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:30:07,474 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:30:07,476 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:30:07,476 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:30:07,491 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a446cc0b-d660-4b76-9228-7e6fc0888611/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) Waiting until toolchain timeout for monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:30:07,512 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 [2020-11-30 00:30:07,513 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:30:07,513 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:30:07,513 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:30:07,514 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:30:07,514 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:30:07,514 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:30:07,514 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:30:07,515 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a446cc0b-d660-4b76-9228-7e6fc0888611/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 [2020-11-30 00:30:07,538 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 [2020-11-30 00:30:07,540 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:30:07,540 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:30:07,540 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:30:07,540 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:30:07,540 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:30:07,541 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:30:07,541 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:30:07,542 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a446cc0b-d660-4b76-9228-7e6fc0888611/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 [2020-11-30 00:30:07,566 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 [2020-11-30 00:30:07,568 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:30:07,568 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:30:07,568 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:30:07,568 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:30:07,568 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:30:07,570 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:30:07,570 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:30:07,582 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-30 00:30:07,585 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-30 00:30:07,585 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_a446cc0b-d660-4b76-9228-7e6fc0888611/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) Waiting until toolchain timeout for monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:30:07,587 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-30 00:30:07,588 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-30 00:30:07,588 INFO L510 LassoAnalysis]: Proved termination. [2020-11-30 00:30:07,588 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(addition_~n) = 1*addition_~n Supporting invariants [] [2020-11-30 00:30:07,607 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-30 00:30:07,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:30:07,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:30:07,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-30 00:30:07,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:30:07,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:30:07,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-30 00:30:07,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:30:07,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:30:07,721 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 [2020-11-30 00:30:07,721 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 23 states and 27 transitions. cyclomatic complexity: 7 Second operand 4 states. [2020-11-30 00:30:07,763 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. [2020-11-30 00:30:07,765 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 [2020-11-30 00:30:07,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-30 00:30:07,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2020-11-30 00:30:07,766 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 11 letters. Loop has 4 letters. [2020-11-30 00:30:07,766 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:30:07,766 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 15 letters. Loop has 4 letters. [2020-11-30 00:30:07,767 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:30:07,767 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 11 letters. Loop has 8 letters. [2020-11-30 00:30:07,767 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:30:07,767 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 55 states and 63 transitions. [2020-11-30 00:30:07,770 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2020-11-30 00:30:07,771 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 55 states to 47 states and 55 transitions. [2020-11-30 00:30:07,772 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 23 [2020-11-30 00:30:07,772 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 25 [2020-11-30 00:30:07,772 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 55 transitions. [2020-11-30 00:30:07,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 00:30:07,772 INFO L691 BuchiCegarLoop]: Abstraction has 47 states and 55 transitions. [2020-11-30 00:30:07,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states and 55 transitions. [2020-11-30 00:30:07,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 41. [2020-11-30 00:30:07,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-11-30 00:30:07,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2020-11-30 00:30:07,777 INFO L714 BuchiCegarLoop]: Abstraction has 41 states and 48 transitions. [2020-11-30 00:30:07,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:30:07,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 00:30:07,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:30:07,780 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand 5 states. [2020-11-30 00:30:07,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:30:07,825 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2020-11-30 00:30:07,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 00:30:07,825 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 29 states and 31 transitions. [2020-11-30 00:30:07,826 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-30 00:30:07,826 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 29 states to 0 states and 0 transitions. [2020-11-30 00:30:07,826 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-30 00:30:07,827 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-30 00:30:07,827 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-30 00:30:07,827 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-30 00:30:07,827 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 00:30:07,827 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 00:30:07,827 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 00:30:07,827 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-30 00:30:07,827 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-11-30 00:30:07,827 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-30 00:30:07,827 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-11-30 00:30:07,833 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 30.11 12:30:07 BoogieIcfgContainer [2020-11-30 00:30:07,833 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-30 00:30:07,833 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:30:07,834 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:30:07,834 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:30:07,834 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:29:53" (3/4) ... [2020-11-30 00:30:07,837 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-30 00:30:07,837 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:30:07,839 INFO L168 Benchmark]: Toolchain (without parser) took 15355.79 ms. Allocated memory was 155.2 MB in the beginning and 186.6 MB in the end (delta: 31.5 MB). Free memory was 129.2 MB in the beginning and 103.6 MB in the end (delta: 25.6 MB). Peak memory consumption was 57.2 MB. Max. memory is 16.1 GB. [2020-11-30 00:30:07,839 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 96.5 MB. Free memory is still 54.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:30:07,840 INFO L168 Benchmark]: CACSL2BoogieTranslator took 237.33 ms. Allocated memory is still 155.2 MB. Free memory was 129.2 MB in the beginning and 133.4 MB in the end (delta: -4.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:30:07,840 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.63 ms. Allocated memory is still 155.2 MB. Free memory was 133.4 MB in the beginning and 131.9 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:30:07,841 INFO L168 Benchmark]: Boogie Preprocessor took 14.82 ms. Allocated memory is still 155.2 MB. Free memory was 131.9 MB in the beginning and 130.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:30:07,841 INFO L168 Benchmark]: RCFGBuilder took 276.80 ms. Allocated memory is still 155.2 MB. Free memory was 130.7 MB in the beginning and 118.7 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-30 00:30:07,842 INFO L168 Benchmark]: BuchiAutomizer took 14786.99 ms. Allocated memory was 155.2 MB in the beginning and 186.6 MB in the end (delta: 31.5 MB). Free memory was 118.7 MB in the beginning and 104.6 MB in the end (delta: 14.1 MB). Peak memory consumption was 46.0 MB. Max. memory is 16.1 GB. [2020-11-30 00:30:07,842 INFO L168 Benchmark]: Witness Printer took 3.62 ms. Allocated memory is still 186.6 MB. Free memory was 104.6 MB in the beginning and 103.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:30:07,845 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 96.5 MB. Free memory is still 54.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 237.33 ms. Allocated memory is still 155.2 MB. Free memory was 129.2 MB in the beginning and 133.4 MB in the end (delta: -4.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 30.63 ms. Allocated memory is still 155.2 MB. Free memory was 133.4 MB in the beginning and 131.9 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 14.82 ms. Allocated memory is still 155.2 MB. Free memory was 131.9 MB in the beginning and 130.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 276.80 ms. Allocated memory is still 155.2 MB. Free memory was 130.7 MB in the beginning and 118.7 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 14786.99 ms. Allocated memory was 155.2 MB in the beginning and 186.6 MB in the end (delta: 31.5 MB). Free memory was 118.7 MB in the beginning and 104.6 MB in the end (delta: 14.1 MB). Peak memory consumption was 46.0 MB. Max. memory is 16.1 GB. * Witness Printer took 3.62 ms. Allocated memory is still 186.6 MB. Free memory was 104.6 MB in the beginning and 103.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 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 14.7s and 4 iterations. TraceHistogramMax:2. Analysis of lassos took 13.8s. Construction of modules took 0.0s. 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, 0.0s 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: 19ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 7 LassoNonterminationAnalysisSatUnbounded: 3 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 11.3s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...