./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/array-memsafety/cstrncat-alloca-2.i --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_56382d4c-11d0-463d-839f-0ac0f7f8e77d/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_56382d4c-11d0-463d-839f-0ac0f7f8e77d/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_56382d4c-11d0-463d-839f-0ac0f7f8e77d/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_56382d4c-11d0-463d-839f-0ac0f7f8e77d/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/array-memsafety/cstrncat-alloca-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_56382d4c-11d0-463d-839f-0ac0f7f8e77d/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_56382d4c-11d0-463d-839f-0ac0f7f8e77d/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 170d05f666fe960395aa4fb943b7fdfa4284d519 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 21:16:57,257 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 21:16:57,259 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 21:16:57,330 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 21:16:57,331 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 21:16:57,332 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 21:16:57,334 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 21:16:57,336 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 21:16:57,339 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 21:16:57,340 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 21:16:57,341 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 21:16:57,342 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 21:16:57,343 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 21:16:57,344 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 21:16:57,346 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 21:16:57,347 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 21:16:57,348 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 21:16:57,349 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 21:16:57,351 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 21:16:57,354 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 21:16:57,356 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 21:16:57,357 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 21:16:57,359 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 21:16:57,360 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 21:16:57,363 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 21:16:57,363 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 21:16:57,364 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 21:16:57,365 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 21:16:57,365 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 21:16:57,367 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 21:16:57,367 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 21:16:57,368 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 21:16:57,369 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 21:16:57,370 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 21:16:57,371 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 21:16:57,372 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 21:16:57,373 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 21:16:57,373 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 21:16:57,373 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 21:16:57,374 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 21:16:57,375 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 21:16:57,376 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_56382d4c-11d0-463d-839f-0ac0f7f8e77d/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-11-29 21:16:57,401 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 21:16:57,402 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 21:16:57,403 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 21:16:57,403 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 21:16:57,404 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 21:16:57,404 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-29 21:16:57,404 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-29 21:16:57,404 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-29 21:16:57,404 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-29 21:16:57,405 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-29 21:16:57,405 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-29 21:16:57,405 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 21:16:57,405 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 21:16:57,405 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 21:16:57,406 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 21:16:57,406 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 21:16:57,406 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 21:16:57,406 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-29 21:16:57,406 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-29 21:16:57,407 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-29 21:16:57,407 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 21:16:57,407 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 21:16:57,407 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-29 21:16:57,407 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 21:16:57,408 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-29 21:16:57,408 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 21:16:57,408 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 21:16:57,408 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-29 21:16:57,409 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 21:16:57,409 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 21:16:57,409 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 21:16:57,409 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-29 21:16:57,410 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-29 21:16:57,410 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_56382d4c-11d0-463d-839f-0ac0f7f8e77d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_56382d4c-11d0-463d-839f-0ac0f7f8e77d/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 170d05f666fe960395aa4fb943b7fdfa4284d519 [2020-11-29 21:16:57,694 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 21:16:57,745 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 21:16:57,750 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 21:16:57,751 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 21:16:57,752 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 21:16:57,753 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_56382d4c-11d0-463d-839f-0ac0f7f8e77d/bin/uautomizer/../../sv-benchmarks/c/array-memsafety/cstrncat-alloca-2.i [2020-11-29 21:16:57,827 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_56382d4c-11d0-463d-839f-0ac0f7f8e77d/bin/uautomizer/data/fa4b8c7e2/d0f56edf9d444616b435bbabe3d368b5/FLAG67f44ef07 [2020-11-29 21:16:58,408 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 21:16:58,409 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_56382d4c-11d0-463d-839f-0ac0f7f8e77d/sv-benchmarks/c/array-memsafety/cstrncat-alloca-2.i [2020-11-29 21:16:58,423 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_56382d4c-11d0-463d-839f-0ac0f7f8e77d/bin/uautomizer/data/fa4b8c7e2/d0f56edf9d444616b435bbabe3d368b5/FLAG67f44ef07 [2020-11-29 21:16:58,723 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_56382d4c-11d0-463d-839f-0ac0f7f8e77d/bin/uautomizer/data/fa4b8c7e2/d0f56edf9d444616b435bbabe3d368b5 [2020-11-29 21:16:58,726 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 21:16:58,727 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 21:16:58,729 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 21:16:58,730 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 21:16:58,734 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 21:16:58,734 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 09:16:58" (1/1) ... [2020-11-29 21:16:58,737 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b4d0796 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:16:58, skipping insertion in model container [2020-11-29 21:16:58,737 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 09:16:58" (1/1) ... [2020-11-29 21:16:58,746 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 21:16:58,804 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 21:16:59,232 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 21:16:59,246 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 21:16:59,303 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 21:16:59,369 INFO L208 MainTranslator]: Completed translation [2020-11-29 21:16:59,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:16:59 WrapperNode [2020-11-29 21:16:59,372 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 21:16:59,373 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 21:16:59,373 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 21:16:59,374 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 21:16:59,383 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:16:59" (1/1) ... [2020-11-29 21:16:59,417 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:16:59" (1/1) ... [2020-11-29 21:16:59,460 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 21:16:59,461 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 21:16:59,461 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 21:16:59,462 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 21:16:59,472 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:16:59" (1/1) ... [2020-11-29 21:16:59,472 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:16:59" (1/1) ... [2020-11-29 21:16:59,494 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:16:59" (1/1) ... [2020-11-29 21:16:59,494 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:16:59" (1/1) ... [2020-11-29 21:16:59,501 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:16:59" (1/1) ... [2020-11-29 21:16:59,519 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:16:59" (1/1) ... [2020-11-29 21:16:59,521 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:16:59" (1/1) ... [2020-11-29 21:16:59,525 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 21:16:59,526 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 21:16:59,526 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 21:16:59,526 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 21:16:59,541 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:16:59" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_56382d4c-11d0-463d-839f-0ac0f7f8e77d/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:16:59,627 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-29 21:16:59,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-29 21:16:59,627 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 21:16:59,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 21:16:59,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 21:16:59,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 21:17:00,101 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 21:17:00,102 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-29 21:17:00,103 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 09:17:00 BoogieIcfgContainer [2020-11-29 21:17:00,103 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 21:17:00,104 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-29 21:17:00,104 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-29 21:17:00,108 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-29 21:17:00,108 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 21:17:00,109 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 09:16:58" (1/3) ... [2020-11-29 21:17:00,110 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7e6a7703 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 09:17:00, skipping insertion in model container [2020-11-29 21:17:00,110 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 21:17:00,110 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:16:59" (2/3) ... [2020-11-29 21:17:00,111 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7e6a7703 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 09:17:00, skipping insertion in model container [2020-11-29 21:17:00,111 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 21:17:00,111 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 09:17:00" (3/3) ... [2020-11-29 21:17:00,112 INFO L373 chiAutomizerObserver]: Analyzing ICFG cstrncat-alloca-2.i [2020-11-29 21:17:00,157 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-29 21:17:00,157 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-29 21:17:00,157 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-29 21:17:00,158 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 21:17:00,158 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 21:17:00,158 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-29 21:17:00,158 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 21:17:00,158 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-29 21:17:00,171 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states. [2020-11-29 21:17:00,190 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 9 [2020-11-29 21:17:00,190 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 21:17:00,191 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 21:17:00,197 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-29 21:17:00,197 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-29 21:17:00,197 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-29 21:17:00,197 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states. [2020-11-29 21:17:00,199 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 9 [2020-11-29 21:17:00,200 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 21:17:00,200 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 21:17:00,200 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-29 21:17:00,200 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-29 21:17:00,207 INFO L794 eck$LassoCheckResult]: Stem: 18#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 15#L-1true havoc main_#res;havoc main_#t~nondet10, main_#t~nondet11, main_#t~nondet12, main_#t~malloc13.base, main_#t~malloc13.offset, main_#t~malloc14.base, main_#t~malloc14.offset, main_#t~nondet16, main_#t~post15, main_~i~0, main_#t~nondet18, main_#t~post17, main_~i~1, main_#t~ret19.base, main_#t~ret19.offset, main_~length1~0, main_~length2~0, main_~n~0, main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;main_~length1~0 := main_#t~nondet10;havoc main_#t~nondet10;main_~length2~0 := main_#t~nondet11;havoc main_#t~nondet11;main_~n~0 := main_#t~nondet12;havoc main_#t~nondet12; 19#L531true assume !(main_~length1~0 < 1); 24#L531-2true assume !(main_~length2~0 < 1); 14#L534-1true assume !(main_~n~0 < 1); 6#L537-1true assume !(main_~length1~0 < main_~n~0 || main_~length1~0 - main_~n~0 < main_~length2~0);call main_#t~malloc13.base, main_#t~malloc13.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc13.base, main_#t~malloc13.offset;call main_#t~malloc14.base, main_#t~malloc14.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc14.base, main_#t~malloc14.offset;main_~i~0 := 0; 20#L544-3true [2020-11-29 21:17:00,208 INFO L796 eck$LassoCheckResult]: Loop: 20#L544-3true assume !!(main_~i~0 < main_~length1~0 - main_~n~0 - 1);call write~int(main_#t~nondet16, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet16; 17#L544-2true main_#t~post15 := main_~i~0;main_~i~0 := 1 + main_#t~post15;havoc main_#t~post15; 20#L544-3true [2020-11-29 21:17:00,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:17:00,214 INFO L82 PathProgramCache]: Analyzing trace with hash 889572367, now seen corresponding path program 1 times [2020-11-29 21:17:00,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:17:00,223 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052228858] [2020-11-29 21:17:00,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:17:00,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:17:00,352 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:17:00,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:17:00,387 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:17:00,409 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 21:17:00,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:17:00,411 INFO L82 PathProgramCache]: Analyzing trace with hash 2019, now seen corresponding path program 1 times [2020-11-29 21:17:00,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:17:00,412 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496122370] [2020-11-29 21:17:00,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:17:00,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:17:00,424 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:17:00,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:17:00,433 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:17:00,437 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 21:17:00,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:17:00,440 INFO L82 PathProgramCache]: Analyzing trace with hash 180553841, now seen corresponding path program 1 times [2020-11-29 21:17:00,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:17:00,441 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116911649] [2020-11-29 21:17:00,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:17:00,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:17:00,472 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:17:00,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:17:00,516 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:17:00,524 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 21:17:00,933 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2020-11-29 21:17:01,082 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2020-11-29 21:17:01,093 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 21:17:01,093 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 21:17:01,094 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 21:17:01,094 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 21:17:01,094 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 21:17:01,094 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:17:01,094 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 21:17:01,094 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 21:17:01,095 INFO L133 ssoRankerPreferences]: Filename of dumped script: cstrncat-alloca-2.i_Iteration1_Lasso [2020-11-29 21:17:01,095 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 21:17:01,095 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 21:17:01,127 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:17:01,133 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:17:01,136 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:17:01,142 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:17:01,146 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:17:01,149 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:17:01,154 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:17:01,158 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:17:01,161 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:17:01,165 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:17:01,171 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:17:01,177 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:17:01,349 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-11-29 21:17:01,403 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:17:01,407 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:17:01,411 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:17:01,415 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:17:01,419 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:17:01,892 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 21:17:01,898 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_56382d4c-11d0-463d-839f-0ac0f7f8e77d/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) [2020-11-29 21:17:01,913 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 21:17:01,916 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:17:01,917 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 21:17:01,917 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:17:01,918 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:17:01,918 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:17:01,921 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 21:17:01,921 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:17:01,928 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_56382d4c-11d0-463d-839f-0ac0f7f8e77d/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 21:17:01,982 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 21:17:01,985 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:17:01,985 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 21:17:01,985 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:17:01,985 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:17:01,985 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:17:01,988 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 21:17:01,988 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:17:01,990 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_56382d4c-11d0-463d-839f-0ac0f7f8e77d/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) [2020-11-29 21:17:02,038 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 21:17:02,040 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:17:02,040 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:17:02,040 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:17:02,041 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:17:02,048 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 21:17:02,048 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:17:02,059 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_56382d4c-11d0-463d-839f-0ac0f7f8e77d/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) [2020-11-29 21:17:02,109 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 21:17:02,111 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:17:02,112 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:17:02,112 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:17:02,112 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:17:02,118 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 21:17:02,119 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:17:02,125 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_56382d4c-11d0-463d-839f-0ac0f7f8e77d/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:17:02,172 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 21:17:02,174 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:17:02,174 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 21:17:02,174 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:17:02,174 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:17:02,175 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:17:02,176 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 21:17:02,176 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 21:17:02,178 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_56382d4c-11d0-463d-839f-0ac0f7f8e77d/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) [2020-11-29 21:17:02,229 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 21:17:02,231 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:17:02,231 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:17:02,231 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:17:02,231 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:17:02,235 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 21:17:02,236 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 21:17:02,257 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_56382d4c-11d0-463d-839f-0ac0f7f8e77d/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:17:02,289 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 21:17:02,290 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:17:02,290 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 21:17:02,291 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:17:02,291 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:17:02,291 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:17:02,291 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 21:17:02,291 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 21:17:02,292 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_56382d4c-11d0-463d-839f-0ac0f7f8e77d/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:17:02,315 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 21:17:02,317 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:17:02,317 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 21:17:02,317 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:17:02,317 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:17:02,317 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:17:02,318 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 21:17:02,318 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 21:17:02,319 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_56382d4c-11d0-463d-839f-0ac0f7f8e77d/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:17:02,342 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 21:17:02,343 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:17:02,343 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 21:17:02,343 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:17:02,344 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:17:02,344 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:17:02,344 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 21:17:02,344 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 21:17:02,346 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_56382d4c-11d0-463d-839f-0ac0f7f8e77d/bin/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 21:17:02,377 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 21:17:02,379 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:17:02,379 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 21:17:02,379 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:17:02,379 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:17:02,379 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:17:02,380 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 21:17:02,380 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:17:02,384 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_56382d4c-11d0-463d-839f-0ac0f7f8e77d/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:17:02,408 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 21:17:02,410 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:17:02,410 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 21:17:02,410 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:17:02,410 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:17:02,410 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:17:02,411 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 21:17:02,411 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 21:17:02,422 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_56382d4c-11d0-463d-839f-0ac0f7f8e77d/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:17:02,448 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 21:17:02,449 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:17:02,449 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:17:02,449 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:17:02,449 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:17:02,452 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 21:17:02,452 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 21:17:02,462 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_56382d4c-11d0-463d-839f-0ac0f7f8e77d/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:17:02,496 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 21:17:02,497 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:17:02,498 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:17:02,498 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:17:02,498 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:17:02,503 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 21:17:02,503 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 21:17:02,524 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_56382d4c-11d0-463d-839f-0ac0f7f8e77d/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 [2020-11-29 21:17:02,566 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 [2020-11-29 21:17:02,568 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:17:02,568 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:17:02,569 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:17:02,569 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:17:02,575 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 21:17:02,575 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 21:17:02,583 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_56382d4c-11d0-463d-839f-0ac0f7f8e77d/bin/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 21:17:02,625 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 21:17:02,627 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:17:02,627 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 21:17:02,627 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:17:02,628 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:17:02,628 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:17:02,628 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 21:17:02,629 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:17:02,630 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_56382d4c-11d0-463d-839f-0ac0f7f8e77d/bin/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:17:02,653 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 21:17:02,655 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:17:02,655 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:17:02,655 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:17:02,655 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:17:02,668 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 21:17:02,668 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 21:17:02,684 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 21:17:02,861 INFO L443 ModelExtractionUtils]: Simplification made 6 calls to the SMT solver. [2020-11-29 21:17:02,861 INFO L444 ModelExtractionUtils]: 22 out of 31 variables were initially zero. Simplification set additionally 5 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_56382d4c-11d0-463d-839f-0ac0f7f8e77d/bin/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 21:17:02,901 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:17:02,909 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-11-29 21:17:02,910 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 21:17:02,910 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~n~0, ULTIMATE.start_main_~length1~0, ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~n~0 + 1*ULTIMATE.start_main_~length1~0 - 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2020-11-29 21:17:02,976 INFO L297 tatePredicateManager]: 6 out of 6 supporting invariants were superfluous and have been removed [2020-11-29 21:17:03,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:17:03,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:17:03,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 21:17:03,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:17:03,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:17:03,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 21:17:03,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:17:03,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:17:03,114 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-11-29 21:17:03,116 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states. Second operand 3 states. [2020-11-29 21:17:03,183 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states.. Second operand 3 states. Result 61 states and 89 transitions. Complement of second has 7 states. [2020-11-29 21:17:03,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-29 21:17:03,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 21:17:03,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 62 transitions. [2020-11-29 21:17:03,190 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 62 transitions. Stem has 6 letters. Loop has 2 letters. [2020-11-29 21:17:03,191 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 21:17:03,191 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 62 transitions. Stem has 8 letters. Loop has 2 letters. [2020-11-29 21:17:03,192 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 21:17:03,192 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 62 transitions. Stem has 6 letters. Loop has 4 letters. [2020-11-29 21:17:03,192 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 21:17:03,193 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 61 states and 89 transitions. [2020-11-29 21:17:03,206 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 7 [2020-11-29 21:17:03,211 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 61 states to 18 states and 26 transitions. [2020-11-29 21:17:03,212 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2020-11-29 21:17:03,212 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2020-11-29 21:17:03,213 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 26 transitions. [2020-11-29 21:17:03,213 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 21:17:03,213 INFO L691 BuchiCegarLoop]: Abstraction has 18 states and 26 transitions. [2020-11-29 21:17:03,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 26 transitions. [2020-11-29 21:17:03,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-11-29 21:17:03,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-29 21:17:03,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 26 transitions. [2020-11-29 21:17:03,240 INFO L714 BuchiCegarLoop]: Abstraction has 18 states and 26 transitions. [2020-11-29 21:17:03,240 INFO L594 BuchiCegarLoop]: Abstraction has 18 states and 26 transitions. [2020-11-29 21:17:03,240 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-29 21:17:03,240 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 26 transitions. [2020-11-29 21:17:03,242 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 7 [2020-11-29 21:17:03,243 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 21:17:03,243 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 21:17:03,243 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:17:03,243 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-29 21:17:03,244 INFO L794 eck$LassoCheckResult]: Stem: 174#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 170#L-1 havoc main_#res;havoc main_#t~nondet10, main_#t~nondet11, main_#t~nondet12, main_#t~malloc13.base, main_#t~malloc13.offset, main_#t~malloc14.base, main_#t~malloc14.offset, main_#t~nondet16, main_#t~post15, main_~i~0, main_#t~nondet18, main_#t~post17, main_~i~1, main_#t~ret19.base, main_#t~ret19.offset, main_~length1~0, main_~length2~0, main_~n~0, main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;main_~length1~0 := main_#t~nondet10;havoc main_#t~nondet10;main_~length2~0 := main_#t~nondet11;havoc main_#t~nondet11;main_~n~0 := main_#t~nondet12;havoc main_#t~nondet12; 171#L531 assume !(main_~length1~0 < 1); 175#L531-2 assume !(main_~length2~0 < 1); 169#L534-1 assume !(main_~n~0 < 1); 166#L537-1 assume !(main_~length1~0 < main_~n~0 || main_~length1~0 - main_~n~0 < main_~length2~0);call main_#t~malloc13.base, main_#t~malloc13.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc13.base, main_#t~malloc13.offset;call main_#t~malloc14.base, main_#t~malloc14.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc14.base, main_#t~malloc14.offset;main_~i~0 := 0; 167#L544-3 assume !(main_~i~0 < main_~length1~0 - main_~n~0 - 1); 176#L544-4 main_~i~1 := 0; 165#L549-3 [2020-11-29 21:17:03,244 INFO L796 eck$LassoCheckResult]: Loop: 165#L549-3 assume !!(main_~i~1 < main_~length2~0 - 1);call write~int(main_#t~nondet18, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet18; 164#L549-2 main_#t~post17 := main_~i~1;main_~i~1 := 1 + main_#t~post17;havoc main_#t~post17; 165#L549-3 [2020-11-29 21:17:03,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:17:03,245 INFO L82 PathProgramCache]: Analyzing trace with hash 180553783, now seen corresponding path program 1 times [2020-11-29 21:17:03,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:17:03,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251962264] [2020-11-29 21:17:03,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:17:03,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:17:03,274 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:17:03,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:17:03,300 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:17:03,304 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 21:17:03,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:17:03,305 INFO L82 PathProgramCache]: Analyzing trace with hash 2467, now seen corresponding path program 1 times [2020-11-29 21:17:03,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:17:03,305 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077776949] [2020-11-29 21:17:03,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:17:03,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:17:03,311 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:17:03,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:17:03,328 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:17:03,330 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 21:17:03,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:17:03,330 INFO L82 PathProgramCache]: Analyzing trace with hash 1713495129, now seen corresponding path program 1 times [2020-11-29 21:17:03,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:17:03,331 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857259183] [2020-11-29 21:17:03,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:17:03,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:17:03,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:17:03,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857259183] [2020-11-29 21:17:03,457 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:17:03,457 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 21:17:03,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780960887] [2020-11-29 21:17:03,526 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:17:03,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 21:17:03,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-29 21:17:03,531 INFO L87 Difference]: Start difference. First operand 18 states and 26 transitions. cyclomatic complexity: 12 Second operand 5 states. [2020-11-29 21:17:03,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:17:03,719 INFO L93 Difference]: Finished difference Result 41 states and 56 transitions. [2020-11-29 21:17:03,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 21:17:03,722 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 41 states and 56 transitions. [2020-11-29 21:17:03,724 INFO L131 ngComponentsAnalysis]: Automaton has 7 accepting balls. 17 [2020-11-29 21:17:03,725 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 41 states to 41 states and 56 transitions. [2020-11-29 21:17:03,725 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 35 [2020-11-29 21:17:03,725 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 35 [2020-11-29 21:17:03,725 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 56 transitions. [2020-11-29 21:17:03,726 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 21:17:03,726 INFO L691 BuchiCegarLoop]: Abstraction has 41 states and 56 transitions. [2020-11-29 21:17:03,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states and 56 transitions. [2020-11-29 21:17:03,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 25. [2020-11-29 21:17:03,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-11-29 21:17:03,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 36 transitions. [2020-11-29 21:17:03,734 INFO L714 BuchiCegarLoop]: Abstraction has 25 states and 36 transitions. [2020-11-29 21:17:03,734 INFO L594 BuchiCegarLoop]: Abstraction has 25 states and 36 transitions. [2020-11-29 21:17:03,734 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-29 21:17:03,734 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 25 states and 36 transitions. [2020-11-29 21:17:03,737 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 7 [2020-11-29 21:17:03,738 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 21:17:03,738 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 21:17:03,740 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:17:03,740 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-29 21:17:03,740 INFO L794 eck$LassoCheckResult]: Stem: 248#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 244#L-1 havoc main_#res;havoc main_#t~nondet10, main_#t~nondet11, main_#t~nondet12, main_#t~malloc13.base, main_#t~malloc13.offset, main_#t~malloc14.base, main_#t~malloc14.offset, main_#t~nondet16, main_#t~post15, main_~i~0, main_#t~nondet18, main_#t~post17, main_~i~1, main_#t~ret19.base, main_#t~ret19.offset, main_~length1~0, main_~length2~0, main_~n~0, main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;main_~length1~0 := main_#t~nondet10;havoc main_#t~nondet10;main_~length2~0 := main_#t~nondet11;havoc main_#t~nondet11;main_~n~0 := main_#t~nondet12;havoc main_#t~nondet12; 245#L531 assume !(main_~length1~0 < 1); 249#L531-2 assume main_~length2~0 < 1;main_~length2~0 := 1; 253#L534-1 assume !(main_~n~0 < 1); 257#L537-1 assume !(main_~length1~0 < main_~n~0 || main_~length1~0 - main_~n~0 < main_~length2~0);call main_#t~malloc13.base, main_#t~malloc13.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc13.base, main_#t~malloc13.offset;call main_#t~malloc14.base, main_#t~malloc14.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc14.base, main_#t~malloc14.offset;main_~i~0 := 0; 250#L544-3 assume !(main_~i~0 < main_~length1~0 - main_~n~0 - 1); 251#L544-4 main_~i~1 := 0; 241#L549-3 assume !(main_~i~1 < main_~length2~0 - 1); 242#L549-4 call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - main_~n~0 - 1), 1);call write~int(0, main_~nondetString2~0.base, main_~nondetString2~0.offset + (main_~length2~0 - 1), 1);cstrncat_#in~s1.base, cstrncat_#in~s1.offset, cstrncat_#in~s2.base, cstrncat_#in~s2.offset, cstrncat_#in~n := main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset, main_~n~0;havoc cstrncat_#res.base, cstrncat_#res.offset;havoc cstrncat_#t~post3.base, cstrncat_#t~post3.offset, cstrncat_#t~mem2, cstrncat_#t~post7, cstrncat_#t~post8.base, cstrncat_#t~post8.offset, cstrncat_#t~post4.base, cstrncat_#t~post4.offset, cstrncat_#t~mem5, cstrncat_#t~short6, cstrncat_#t~mem9, cstrncat_~s1.base, cstrncat_~s1.offset, cstrncat_~s2.base, cstrncat_~s2.offset, cstrncat_~n, cstrncat_~s~0.base, cstrncat_~s~0.offset;cstrncat_~s1.base, cstrncat_~s1.offset := cstrncat_#in~s1.base, cstrncat_#in~s1.offset;cstrncat_~s2.base, cstrncat_~s2.offset := cstrncat_#in~s2.base, cstrncat_#in~s2.offset;cstrncat_~n := cstrncat_#in~n;cstrncat_~s~0.base, cstrncat_~s~0.offset := cstrncat_~s1.base, cstrncat_~s1.offset; 235#L517-3 [2020-11-29 21:17:03,742 INFO L796 eck$LassoCheckResult]: Loop: 235#L517-3 call cstrncat_#t~mem2 := read~int(cstrncat_~s~0.base, cstrncat_~s~0.offset, 1); 233#L517-1 assume !!(0 != cstrncat_#t~mem2);havoc cstrncat_#t~mem2;cstrncat_#t~post3.base, cstrncat_#t~post3.offset := cstrncat_~s~0.base, cstrncat_~s~0.offset;cstrncat_~s~0.base, cstrncat_~s~0.offset := cstrncat_#t~post3.base, 1 + cstrncat_#t~post3.offset;havoc cstrncat_#t~post3.base, cstrncat_#t~post3.offset; 235#L517-3 [2020-11-29 21:17:03,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:17:03,743 INFO L82 PathProgramCache]: Analyzing trace with hash -61512291, now seen corresponding path program 1 times [2020-11-29 21:17:03,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:17:03,743 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713543804] [2020-11-29 21:17:03,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:17:03,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:17:03,776 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:17:03,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:17:03,804 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:17:03,815 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 21:17:03,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:17:03,815 INFO L82 PathProgramCache]: Analyzing trace with hash 2822, now seen corresponding path program 1 times [2020-11-29 21:17:03,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:17:03,816 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587881720] [2020-11-29 21:17:03,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:17:03,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:17:03,825 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:17:03,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:17:03,837 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:17:03,838 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 21:17:03,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:17:03,839 INFO L82 PathProgramCache]: Analyzing trace with hash 1016232354, now seen corresponding path program 1 times [2020-11-29 21:17:03,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:17:03,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074646705] [2020-11-29 21:17:03,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:17:03,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:17:04,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:17:04,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074646705] [2020-11-29 21:17:04,030 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:17:04,030 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 21:17:04,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094904219] [2020-11-29 21:17:04,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:17:04,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 21:17:04,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-29 21:17:04,073 INFO L87 Difference]: Start difference. First operand 25 states and 36 transitions. cyclomatic complexity: 16 Second operand 6 states. [2020-11-29 21:17:04,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:17:04,220 INFO L93 Difference]: Finished difference Result 38 states and 51 transitions. [2020-11-29 21:17:04,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 21:17:04,222 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 38 states and 51 transitions. [2020-11-29 21:17:04,223 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 10 [2020-11-29 21:17:04,224 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 38 states to 38 states and 51 transitions. [2020-11-29 21:17:04,224 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 32 [2020-11-29 21:17:04,224 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 32 [2020-11-29 21:17:04,224 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 51 transitions. [2020-11-29 21:17:04,225 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 21:17:04,225 INFO L691 BuchiCegarLoop]: Abstraction has 38 states and 51 transitions. [2020-11-29 21:17:04,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states and 51 transitions. [2020-11-29 21:17:04,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 30. [2020-11-29 21:17:04,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-11-29 21:17:04,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 41 transitions. [2020-11-29 21:17:04,229 INFO L714 BuchiCegarLoop]: Abstraction has 30 states and 41 transitions. [2020-11-29 21:17:04,229 INFO L594 BuchiCegarLoop]: Abstraction has 30 states and 41 transitions. [2020-11-29 21:17:04,229 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-29 21:17:04,229 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 30 states and 41 transitions. [2020-11-29 21:17:04,230 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 7 [2020-11-29 21:17:04,230 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 21:17:04,230 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 21:17:04,230 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:17:04,230 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-29 21:17:04,231 INFO L794 eck$LassoCheckResult]: Stem: 329#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 325#L-1 havoc main_#res;havoc main_#t~nondet10, main_#t~nondet11, main_#t~nondet12, main_#t~malloc13.base, main_#t~malloc13.offset, main_#t~malloc14.base, main_#t~malloc14.offset, main_#t~nondet16, main_#t~post15, main_~i~0, main_#t~nondet18, main_#t~post17, main_~i~1, main_#t~ret19.base, main_#t~ret19.offset, main_~length1~0, main_~length2~0, main_~n~0, main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;main_~length1~0 := main_#t~nondet10;havoc main_#t~nondet10;main_~length2~0 := main_#t~nondet11;havoc main_#t~nondet11;main_~n~0 := main_#t~nondet12;havoc main_#t~nondet12; 326#L531 assume !(main_~length1~0 < 1); 330#L531-2 assume !(main_~length2~0 < 1); 323#L534-1 assume !(main_~n~0 < 1); 324#L537-1 assume !(main_~length1~0 < main_~n~0 || main_~length1~0 - main_~n~0 < main_~length2~0);call main_#t~malloc13.base, main_#t~malloc13.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc13.base, main_#t~malloc13.offset;call main_#t~malloc14.base, main_#t~malloc14.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc14.base, main_#t~malloc14.offset;main_~i~0 := 0; 340#L544-3 assume !!(main_~i~0 < main_~length1~0 - main_~n~0 - 1);call write~int(main_#t~nondet16, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet16; 339#L544-2 main_#t~post15 := main_~i~0;main_~i~0 := 1 + main_#t~post15;havoc main_#t~post15; 338#L544-3 assume !(main_~i~0 < main_~length1~0 - main_~n~0 - 1); 337#L544-4 main_~i~1 := 0; 316#L549-3 [2020-11-29 21:17:04,231 INFO L796 eck$LassoCheckResult]: Loop: 316#L549-3 assume !!(main_~i~1 < main_~length2~0 - 1);call write~int(main_#t~nondet18, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet18; 315#L549-2 main_#t~post17 := main_~i~1;main_~i~1 := 1 + main_#t~post17;havoc main_#t~post17; 316#L549-3 [2020-11-29 21:17:04,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:17:04,231 INFO L82 PathProgramCache]: Analyzing trace with hash 1713550361, now seen corresponding path program 1 times [2020-11-29 21:17:04,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:17:04,231 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111826447] [2020-11-29 21:17:04,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:17:04,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:17:04,243 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:17:04,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:17:04,262 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:17:04,274 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 21:17:04,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:17:04,275 INFO L82 PathProgramCache]: Analyzing trace with hash 2467, now seen corresponding path program 2 times [2020-11-29 21:17:04,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:17:04,275 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265690405] [2020-11-29 21:17:04,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:17:04,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:17:04,279 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:17:04,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:17:04,282 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:17:04,283 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 21:17:04,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:17:04,284 INFO L82 PathProgramCache]: Analyzing trace with hash 1749424059, now seen corresponding path program 1 times [2020-11-29 21:17:04,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:17:04,288 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197083560] [2020-11-29 21:17:04,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:17:04,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:17:04,312 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:17:04,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:17:04,332 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:17:04,338 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 21:17:04,713 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2020-11-29 21:17:04,847 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-11-29 21:17:04,851 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 21:17:04,851 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 21:17:04,851 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 21:17:04,851 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 21:17:04,851 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 21:17:04,851 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:17:04,851 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 21:17:04,851 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 21:17:04,851 INFO L133 ssoRankerPreferences]: Filename of dumped script: cstrncat-alloca-2.i_Iteration4_Lasso [2020-11-29 21:17:04,851 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 21:17:04,852 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 21:17:04,856 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:17:04,865 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:17:04,869 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:17:04,873 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:17:04,877 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:17:04,885 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:17:04,889 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:17:04,893 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:17:04,897 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:17:04,901 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:17:04,906 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:17:04,910 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:17:05,170 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2020-11-29 21:17:05,208 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:17:05,212 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:17:05,215 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:17:05,432 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 38 [2020-11-29 21:17:05,710 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 21:17:05,710 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_56382d4c-11d0-463d-839f-0ac0f7f8e77d/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) [2020-11-29 21:17:05,724 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:17:05,725 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:17:05,726 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 21:17:05,726 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:17:05,726 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:17:05,726 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:17:05,727 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 21:17:05,727 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 21:17:05,729 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_56382d4c-11d0-463d-839f-0ac0f7f8e77d/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) [2020-11-29 21:17:05,775 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 21:17:05,776 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:17:05,777 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 21:17:05,777 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:17:05,777 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:17:05,777 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:17:05,777 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 21:17:05,778 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:17:05,779 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_56382d4c-11d0-463d-839f-0ac0f7f8e77d/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 [2020-11-29 21:17:05,826 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 21:17:05,828 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:17:05,828 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 21:17:05,828 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:17:05,828 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:17:05,828 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:17:05,829 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 21:17:05,829 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 21:17:05,831 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_56382d4c-11d0-463d-839f-0ac0f7f8e77d/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 [2020-11-29 21:17:05,856 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 21:17:05,857 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:17:05,857 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 21:17:05,858 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:17:05,858 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:17:05,858 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:17:05,858 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 21:17:05,858 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 21:17:05,860 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_56382d4c-11d0-463d-839f-0ac0f7f8e77d/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 [2020-11-29 21:17:05,901 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 21:17:05,902 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:17:05,902 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:17:05,902 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:17:05,902 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:17:05,904 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 21:17:05,904 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 21:17:05,908 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_56382d4c-11d0-463d-839f-0ac0f7f8e77d/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) [2020-11-29 21:17:05,953 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 21:17:05,955 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:17:05,955 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 21:17:05,955 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:17:05,955 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:17:05,955 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:17:05,956 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 21:17:05,956 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 [2020-11-29 21:17:05,958 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_56382d4c-11d0-463d-839f-0ac0f7f8e77d/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) [2020-11-29 21:17:05,996 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 21:17:05,998 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:17:05,998 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 21:17:05,998 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:17:05,998 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:17:05,998 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:17:05,999 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 21:17:05,999 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:17:06,005 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_56382d4c-11d0-463d-839f-0ac0f7f8e77d/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) [2020-11-29 21:17:06,053 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 [2020-11-29 21:17:06,055 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:17:06,055 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 21:17:06,056 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:17:06,056 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:17:06,056 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:17:06,057 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 21:17:06,057 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:17:06,059 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_56382d4c-11d0-463d-839f-0ac0f7f8e77d/bin/uautomizer/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 21:17:06,102 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 21:17:06,103 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:17:06,104 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:17:06,104 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:17:06,104 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:17:06,106 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 21:17:06,107 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:17:06,111 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_56382d4c-11d0-463d-839f-0ac0f7f8e77d/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 [2020-11-29 21:17:06,149 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 21:17:06,151 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:17:06,151 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:17:06,151 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:17:06,151 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:17:06,153 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 21:17:06,154 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 21:17:06,158 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_56382d4c-11d0-463d-839f-0ac0f7f8e77d/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) [2020-11-29 21:17:06,205 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 21:17:06,207 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:17:06,207 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 21:17:06,207 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:17:06,207 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:17:06,208 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:17:06,208 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 21:17:06,208 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:17:06,210 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_56382d4c-11d0-463d-839f-0ac0f7f8e77d/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 [2020-11-29 21:17:06,249 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 21:17:06,251 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:17:06,251 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:17:06,251 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:17:06,251 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:17:06,253 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 21:17:06,254 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 21:17:06,261 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_56382d4c-11d0-463d-839f-0ac0f7f8e77d/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 [2020-11-29 21:17:06,293 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 21:17:06,295 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:17:06,295 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 21:17:06,295 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:17:06,295 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:17:06,295 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:17:06,296 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 21:17:06,296 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 21:17:06,300 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_56382d4c-11d0-463d-839f-0ac0f7f8e77d/bin/uautomizer/z3 Starting monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:17:06,326 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 21:17:06,327 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:17:06,328 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:17:06,328 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:17:06,328 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:17:06,330 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 21:17:06,330 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 21:17:06,333 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_56382d4c-11d0-463d-839f-0ac0f7f8e77d/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 [2020-11-29 21:17:06,357 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 21:17:06,359 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:17:06,359 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:17:06,359 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:17:06,359 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:17:06,362 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 21:17:06,362 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 21:17:06,373 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_56382d4c-11d0-463d-839f-0ac0f7f8e77d/bin/uautomizer/z3 Starting monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 21:17:06,424 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 21:17:06,427 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:17:06,427 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:17:06,427 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:17:06,427 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:17:06,438 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 21:17:06,438 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:17:06,455 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 21:17:06,539 INFO L443 ModelExtractionUtils]: Simplification made 11 calls to the SMT solver. [2020-11-29 21:17:06,539 INFO L444 ModelExtractionUtils]: 12 out of 37 variables were initially zero. Simplification set additionally 21 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_56382d4c-11d0-463d-839f-0ac0f7f8e77d/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 [2020-11-29 21:17:06,541 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 21:17:06,544 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-11-29 21:17:06,544 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 21:17:06,544 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select #length ULTIMATE.start_main_~nondetString2~0.base)_1, ULTIMATE.start_main_~i~1, ULTIMATE.start_main_~nondetString2~0.offset) = 1*v_rep(select #length ULTIMATE.start_main_~nondetString2~0.base)_1 - 1*ULTIMATE.start_main_~i~1 - 1*ULTIMATE.start_main_~nondetString2~0.offset Supporting invariants [] [2020-11-29 21:17:06,585 INFO L297 tatePredicateManager]: 7 out of 7 supporting invariants were superfluous and have been removed [2020-11-29 21:17:06,587 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-29 21:17:06,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:17:06,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:17:06,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 21:17:06,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:17:06,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:17:06,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 21:17:06,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:17:06,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:17:06,702 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-11-29 21:17:06,702 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 30 states and 41 transitions. cyclomatic complexity: 16 Second operand 3 states. [2020-11-29 21:17:06,733 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 30 states and 41 transitions. cyclomatic complexity: 16. Second operand 3 states. Result 41 states and 60 transitions. Complement of second has 6 states. [2020-11-29 21:17:06,734 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 [2020-11-29 21:17:06,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 21:17:06,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 24 transitions. [2020-11-29 21:17:06,734 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 24 transitions. Stem has 10 letters. Loop has 2 letters. [2020-11-29 21:17:06,734 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 21:17:06,735 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 24 transitions. Stem has 12 letters. Loop has 2 letters. [2020-11-29 21:17:06,735 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 21:17:06,735 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 24 transitions. Stem has 10 letters. Loop has 4 letters. [2020-11-29 21:17:06,735 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 21:17:06,735 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 41 states and 60 transitions. [2020-11-29 21:17:06,736 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 5 [2020-11-29 21:17:06,737 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 41 states to 31 states and 43 transitions. [2020-11-29 21:17:06,737 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 23 [2020-11-29 21:17:06,737 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 25 [2020-11-29 21:17:06,737 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 43 transitions. [2020-11-29 21:17:06,738 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 21:17:06,738 INFO L691 BuchiCegarLoop]: Abstraction has 31 states and 43 transitions. [2020-11-29 21:17:06,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states and 43 transitions. [2020-11-29 21:17:06,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-11-29 21:17:06,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-29 21:17:06,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 43 transitions. [2020-11-29 21:17:06,741 INFO L714 BuchiCegarLoop]: Abstraction has 31 states and 43 transitions. [2020-11-29 21:17:06,741 INFO L594 BuchiCegarLoop]: Abstraction has 31 states and 43 transitions. [2020-11-29 21:17:06,741 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-11-29 21:17:06,741 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 31 states and 43 transitions. [2020-11-29 21:17:06,741 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 5 [2020-11-29 21:17:06,742 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 21:17:06,742 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 21:17:06,742 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:17:06,742 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-29 21:17:06,742 INFO L794 eck$LassoCheckResult]: Stem: 487#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 483#L-1 havoc main_#res;havoc main_#t~nondet10, main_#t~nondet11, main_#t~nondet12, main_#t~malloc13.base, main_#t~malloc13.offset, main_#t~malloc14.base, main_#t~malloc14.offset, main_#t~nondet16, main_#t~post15, main_~i~0, main_#t~nondet18, main_#t~post17, main_~i~1, main_#t~ret19.base, main_#t~ret19.offset, main_~length1~0, main_~length2~0, main_~n~0, main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;main_~length1~0 := main_#t~nondet10;havoc main_#t~nondet10;main_~length2~0 := main_#t~nondet11;havoc main_#t~nondet11;main_~n~0 := main_#t~nondet12;havoc main_#t~nondet12; 484#L531 assume !(main_~length1~0 < 1); 488#L531-2 assume main_~length2~0 < 1;main_~length2~0 := 1; 482#L534-1 assume !(main_~n~0 < 1); 476#L537-1 assume !(main_~length1~0 < main_~n~0 || main_~length1~0 - main_~n~0 < main_~length2~0);call main_#t~malloc13.base, main_#t~malloc13.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc13.base, main_#t~malloc13.offset;call main_#t~malloc14.base, main_#t~malloc14.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc14.base, main_#t~malloc14.offset;main_~i~0 := 0; 477#L544-3 assume !!(main_~i~0 < main_~length1~0 - main_~n~0 - 1);call write~int(main_#t~nondet16, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet16; 485#L544-2 main_#t~post15 := main_~i~0;main_~i~0 := 1 + main_#t~post15;havoc main_#t~post15; 486#L544-3 assume !(main_~i~0 < main_~length1~0 - main_~n~0 - 1); 490#L544-4 main_~i~1 := 0; 480#L549-3 assume !(main_~i~1 < main_~length2~0 - 1); 481#L549-4 call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - main_~n~0 - 1), 1);call write~int(0, main_~nondetString2~0.base, main_~nondetString2~0.offset + (main_~length2~0 - 1), 1);cstrncat_#in~s1.base, cstrncat_#in~s1.offset, cstrncat_#in~s2.base, cstrncat_#in~s2.offset, cstrncat_#in~n := main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset, main_~n~0;havoc cstrncat_#res.base, cstrncat_#res.offset;havoc cstrncat_#t~post3.base, cstrncat_#t~post3.offset, cstrncat_#t~mem2, cstrncat_#t~post7, cstrncat_#t~post8.base, cstrncat_#t~post8.offset, cstrncat_#t~post4.base, cstrncat_#t~post4.offset, cstrncat_#t~mem5, cstrncat_#t~short6, cstrncat_#t~mem9, cstrncat_~s1.base, cstrncat_~s1.offset, cstrncat_~s2.base, cstrncat_~s2.offset, cstrncat_~n, cstrncat_~s~0.base, cstrncat_~s~0.offset;cstrncat_~s1.base, cstrncat_~s1.offset := cstrncat_#in~s1.base, cstrncat_#in~s1.offset;cstrncat_~s2.base, cstrncat_~s2.offset := cstrncat_#in~s2.base, cstrncat_#in~s2.offset;cstrncat_~n := cstrncat_#in~n;cstrncat_~s~0.base, cstrncat_~s~0.offset := cstrncat_~s1.base, cstrncat_~s1.offset; 478#L517-3 [2020-11-29 21:17:06,743 INFO L796 eck$LassoCheckResult]: Loop: 478#L517-3 call cstrncat_#t~mem2 := read~int(cstrncat_~s~0.base, cstrncat_~s~0.offset, 1); 479#L517-1 assume !!(0 != cstrncat_#t~mem2);havoc cstrncat_#t~mem2;cstrncat_#t~post3.base, cstrncat_#t~post3.offset := cstrncat_~s~0.base, cstrncat_~s~0.offset;cstrncat_~s~0.base, cstrncat_~s~0.offset := cstrncat_#t~post3.base, 1 + cstrncat_#t~post3.offset;havoc cstrncat_#t~post3.base, cstrncat_#t~post3.offset; 478#L517-3 [2020-11-29 21:17:06,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:17:06,743 INFO L82 PathProgramCache]: Analyzing trace with hash 1069365631, now seen corresponding path program 1 times [2020-11-29 21:17:06,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:17:06,743 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041727538] [2020-11-29 21:17:06,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:17:06,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:17:06,754 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:17:06,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:17:06,764 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:17:06,768 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 21:17:06,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:17:06,768 INFO L82 PathProgramCache]: Analyzing trace with hash 2822, now seen corresponding path program 2 times [2020-11-29 21:17:06,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:17:06,769 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465488781] [2020-11-29 21:17:06,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:17:06,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:17:06,772 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:17:06,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:17:06,774 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:17:06,775 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 21:17:06,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:17:06,776 INFO L82 PathProgramCache]: Analyzing trace with hash 1163189508, now seen corresponding path program 1 times [2020-11-29 21:17:06,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:17:06,776 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994660099] [2020-11-29 21:17:06,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:17:06,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:17:06,792 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:17:06,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:17:06,812 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:17:06,816 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 21:17:07,606 WARN L193 SmtUtils]: Spent 749.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 115 [2020-11-29 21:17:07,857 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-11-29 21:17:07,861 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 21:17:07,861 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 21:17:07,861 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 21:17:07,861 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 21:17:07,862 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 21:17:07,862 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:17:07,862 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 21:17:07,862 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 21:17:07,862 INFO L133 ssoRankerPreferences]: Filename of dumped script: cstrncat-alloca-2.i_Iteration5_Lasso [2020-11-29 21:17:07,862 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 21:17:07,862 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 21:17:07,867 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:17:07,888 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:17:07,892 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:17:08,284 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 78 [2020-11-29 21:17:08,369 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:17:08,372 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:17:08,376 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:17:08,380 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:17:08,384 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:17:08,387 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:17:08,390 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:17:08,394 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:17:08,397 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:17:08,404 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:17:08,408 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:17:08,412 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:17:08,415 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:17:08,419 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:17:08,422 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:17:08,426 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:17:08,429 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:17:08,433 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:17:08,435 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:17:08,438 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:17:08,441 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:17:08,444 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:17:08,449 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:17:08,453 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:17:08,456 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:17:08,459 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:17:08,464 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:17:08,739 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2020-11-29 21:17:09,040 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2020-11-29 21:17:09,246 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 21:17:09,246 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_56382d4c-11d0-463d-839f-0ac0f7f8e77d/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) [2020-11-29 21:17:09,258 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 21:17:09,260 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:17:09,260 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:17:09,260 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:17:09,260 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:17:09,263 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 21:17:09,263 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:17:09,267 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_56382d4c-11d0-463d-839f-0ac0f7f8e77d/bin/uautomizer/z3 Starting monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 21:17:09,304 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 21:17:09,306 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:17:09,306 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:17:09,306 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:17:09,306 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:17:09,308 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 21:17:09,308 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:17:09,312 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_56382d4c-11d0-463d-839f-0ac0f7f8e77d/bin/uautomizer/z3 Starting monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 21:17:09,348 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 21:17:09,350 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:17:09,350 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:17:09,350 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:17:09,350 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:17:09,356 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 21:17:09,356 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:17:09,363 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_56382d4c-11d0-463d-839f-0ac0f7f8e77d/bin/uautomizer/z3 Starting monitored process 39 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 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:17:09,388 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 21:17:09,390 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:17:09,391 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:17:09,391 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:17:09,391 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:17:09,407 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 21:17:09,407 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 21:17:09,436 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 21:17:09,481 INFO L443 ModelExtractionUtils]: Simplification made 10 calls to the SMT solver. [2020-11-29 21:17:09,481 INFO L444 ModelExtractionUtils]: 15 out of 61 variables were initially zero. Simplification set additionally 43 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_56382d4c-11d0-463d-839f-0ac0f7f8e77d/bin/uautomizer/z3 Starting monitored process 40 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 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:17:09,486 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 21:17:09,489 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-11-29 21:17:09,489 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 21:17:09,489 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select #length ULTIMATE.start_main_#t~malloc13.base)_3, ULTIMATE.start_cstrncat_~s~0.offset) = 1*v_rep(select #length ULTIMATE.start_main_#t~malloc13.base)_3 - 1*ULTIMATE.start_cstrncat_~s~0.offset Supporting invariants [] [2020-11-29 21:17:09,546 INFO L297 tatePredicateManager]: 8 out of 9 supporting invariants were superfluous and have been removed [2020-11-29 21:17:09,548 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-29 21:17:09,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:17:09,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:17:09,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-29 21:17:09,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:17:09,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:17:09,631 WARN L261 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-29 21:17:09,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:17:09,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:17:09,649 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 2 loop predicates [2020-11-29 21:17:09,649 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 43 transitions. cyclomatic complexity: 17 Second operand 4 states. [2020-11-29 21:17:09,715 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 31 states and 43 transitions. cyclomatic complexity: 17. Second operand 4 states. Result 45 states and 64 transitions. Complement of second has 7 states. [2020-11-29 21:17:09,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-29 21:17:09,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-29 21:17:09,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 29 transitions. [2020-11-29 21:17:09,716 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 29 transitions. Stem has 12 letters. Loop has 2 letters. [2020-11-29 21:17:09,716 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 21:17:09,716 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 29 transitions. Stem has 14 letters. Loop has 2 letters. [2020-11-29 21:17:09,716 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 21:17:09,717 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 29 transitions. Stem has 12 letters. Loop has 4 letters. [2020-11-29 21:17:09,717 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 21:17:09,717 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 45 states and 64 transitions. [2020-11-29 21:17:09,718 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-29 21:17:09,718 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 45 states to 40 states and 54 transitions. [2020-11-29 21:17:09,719 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 23 [2020-11-29 21:17:09,719 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2020-11-29 21:17:09,719 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 54 transitions. [2020-11-29 21:17:09,719 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 21:17:09,719 INFO L691 BuchiCegarLoop]: Abstraction has 40 states and 54 transitions. [2020-11-29 21:17:09,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states and 54 transitions. [2020-11-29 21:17:09,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2020-11-29 21:17:09,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-11-29 21:17:09,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 53 transitions. [2020-11-29 21:17:09,723 INFO L714 BuchiCegarLoop]: Abstraction has 39 states and 53 transitions. [2020-11-29 21:17:09,723 INFO L594 BuchiCegarLoop]: Abstraction has 39 states and 53 transitions. [2020-11-29 21:17:09,723 INFO L427 BuchiCegarLoop]: ======== Iteration 6============ [2020-11-29 21:17:09,723 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 39 states and 53 transitions. [2020-11-29 21:17:09,724 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-29 21:17:09,724 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 21:17:09,724 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 21:17:09,725 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:17:09,725 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-29 21:17:09,725 INFO L794 eck$LassoCheckResult]: Stem: 676#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 672#L-1 havoc main_#res;havoc main_#t~nondet10, main_#t~nondet11, main_#t~nondet12, main_#t~malloc13.base, main_#t~malloc13.offset, main_#t~malloc14.base, main_#t~malloc14.offset, main_#t~nondet16, main_#t~post15, main_~i~0, main_#t~nondet18, main_#t~post17, main_~i~1, main_#t~ret19.base, main_#t~ret19.offset, main_~length1~0, main_~length2~0, main_~n~0, main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;main_~length1~0 := main_#t~nondet10;havoc main_#t~nondet10;main_~length2~0 := main_#t~nondet11;havoc main_#t~nondet11;main_~n~0 := main_#t~nondet12;havoc main_#t~nondet12; 673#L531 assume !(main_~length1~0 < 1); 677#L531-2 assume main_~length2~0 < 1;main_~length2~0 := 1; 671#L534-1 assume !(main_~n~0 < 1); 664#L537-1 assume !(main_~length1~0 < main_~n~0 || main_~length1~0 - main_~n~0 < main_~length2~0);call main_#t~malloc13.base, main_#t~malloc13.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc13.base, main_#t~malloc13.offset;call main_#t~malloc14.base, main_#t~malloc14.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc14.base, main_#t~malloc14.offset;main_~i~0 := 0; 665#L544-3 assume !(main_~i~0 < main_~length1~0 - main_~n~0 - 1); 678#L544-4 main_~i~1 := 0; 691#L549-3 assume !(main_~i~1 < main_~length2~0 - 1); 689#L549-4 call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - main_~n~0 - 1), 1);call write~int(0, main_~nondetString2~0.base, main_~nondetString2~0.offset + (main_~length2~0 - 1), 1);cstrncat_#in~s1.base, cstrncat_#in~s1.offset, cstrncat_#in~s2.base, cstrncat_#in~s2.offset, cstrncat_#in~n := main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset, main_~n~0;havoc cstrncat_#res.base, cstrncat_#res.offset;havoc cstrncat_#t~post3.base, cstrncat_#t~post3.offset, cstrncat_#t~mem2, cstrncat_#t~post7, cstrncat_#t~post8.base, cstrncat_#t~post8.offset, cstrncat_#t~post4.base, cstrncat_#t~post4.offset, cstrncat_#t~mem5, cstrncat_#t~short6, cstrncat_#t~mem9, cstrncat_~s1.base, cstrncat_~s1.offset, cstrncat_~s2.base, cstrncat_~s2.offset, cstrncat_~n, cstrncat_~s~0.base, cstrncat_~s~0.offset;cstrncat_~s1.base, cstrncat_~s1.offset := cstrncat_#in~s1.base, cstrncat_#in~s1.offset;cstrncat_~s2.base, cstrncat_~s2.offset := cstrncat_#in~s2.base, cstrncat_#in~s2.offset;cstrncat_~n := cstrncat_#in~n;cstrncat_~s~0.base, cstrncat_~s~0.offset := cstrncat_~s1.base, cstrncat_~s1.offset; 688#L517-3 call cstrncat_#t~mem2 := read~int(cstrncat_~s~0.base, cstrncat_~s~0.offset, 1); 656#L517-1 assume !(0 != cstrncat_#t~mem2);havoc cstrncat_#t~mem2; 657#L519-4 cstrncat_#t~short6 := 0 != cstrncat_~n; 694#L519 assume !cstrncat_#t~short6; 681#L519-2 assume !!cstrncat_#t~short6;havoc cstrncat_#t~mem5;havoc cstrncat_#t~short6;havoc cstrncat_#t~post4.base, cstrncat_#t~post4.offset;cstrncat_#t~post7 := cstrncat_~n;cstrncat_~n := cstrncat_#t~post7 - 1;havoc cstrncat_#t~post7;cstrncat_#t~post8.base, cstrncat_#t~post8.offset := cstrncat_~s~0.base, cstrncat_~s~0.offset;cstrncat_~s~0.base, cstrncat_~s~0.offset := cstrncat_#t~post8.base, 1 + cstrncat_#t~post8.offset;havoc cstrncat_#t~post8.base, cstrncat_#t~post8.offset; 693#L519-4 cstrncat_#t~short6 := 0 != cstrncat_~n; 659#L519 [2020-11-29 21:17:09,725 INFO L796 eck$LassoCheckResult]: Loop: 659#L519 assume !cstrncat_#t~short6; 680#L519-2 assume !!cstrncat_#t~short6;havoc cstrncat_#t~mem5;havoc cstrncat_#t~short6;havoc cstrncat_#t~post4.base, cstrncat_#t~post4.offset;cstrncat_#t~post7 := cstrncat_~n;cstrncat_~n := cstrncat_#t~post7 - 1;havoc cstrncat_#t~post7;cstrncat_#t~post8.base, cstrncat_#t~post8.offset := cstrncat_~s~0.base, cstrncat_~s~0.offset;cstrncat_~s~0.base, cstrncat_~s~0.offset := cstrncat_#t~post8.base, 1 + cstrncat_#t~post8.offset;havoc cstrncat_#t~post8.base, cstrncat_#t~post8.offset; 658#L519-4 cstrncat_#t~short6 := 0 != cstrncat_~n; 659#L519 [2020-11-29 21:17:09,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:17:09,725 INFO L82 PathProgramCache]: Analyzing trace with hash 1436393274, now seen corresponding path program 1 times [2020-11-29 21:17:09,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:17:09,726 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123965357] [2020-11-29 21:17:09,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:17:09,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:17:09,804 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:17:09,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123965357] [2020-11-29 21:17:09,804 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:17:09,804 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 21:17:09,805 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968052915] [2020-11-29 21:17:09,805 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-29 21:17:09,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:17:09,805 INFO L82 PathProgramCache]: Analyzing trace with hash 104447, now seen corresponding path program 1 times [2020-11-29 21:17:09,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:17:09,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374289625] [2020-11-29 21:17:09,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:17:09,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:17:09,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:17:09,826 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374289625] [2020-11-29 21:17:09,827 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:17:09,827 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 21:17:09,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666697598] [2020-11-29 21:17:09,827 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-29 21:17:09,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:17:09,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 21:17:09,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 21:17:09,828 INFO L87 Difference]: Start difference. First operand 39 states and 53 transitions. cyclomatic complexity: 20 Second operand 3 states. [2020-11-29 21:17:09,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:17:09,853 INFO L93 Difference]: Finished difference Result 38 states and 49 transitions. [2020-11-29 21:17:09,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 21:17:09,853 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 38 states and 49 transitions. [2020-11-29 21:17:09,854 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 21:17:09,854 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 38 states to 0 states and 0 transitions. [2020-11-29 21:17:09,854 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-29 21:17:09,854 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-29 21:17:09,855 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-29 21:17:09,855 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 21:17:09,855 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 21:17:09,855 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 21:17:09,855 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 21:17:09,855 INFO L427 BuchiCegarLoop]: ======== Iteration 7============ [2020-11-29 21:17:09,855 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-11-29 21:17:09,855 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 21:17:09,855 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-11-29 21:17:09,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.11 09:17:09 BoogieIcfgContainer [2020-11-29 21:17:09,863 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-29 21:17:09,864 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 21:17:09,864 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 21:17:09,864 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 21:17:09,865 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 09:17:00" (3/4) ... [2020-11-29 21:17:09,868 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 21:17:09,868 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 21:17:09,870 INFO L168 Benchmark]: Toolchain (without parser) took 11141.79 ms. Allocated memory was 94.4 MB in the beginning and 188.7 MB in the end (delta: 94.4 MB). Free memory was 63.7 MB in the beginning and 77.3 MB in the end (delta: -13.7 MB). Peak memory consumption was 81.5 MB. Max. memory is 16.1 GB. [2020-11-29 21:17:09,871 INFO L168 Benchmark]: CDTParser took 0.92 ms. Allocated memory is still 94.4 MB. Free memory is still 51.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 21:17:09,874 INFO L168 Benchmark]: CACSL2BoogieTranslator took 643.05 ms. Allocated memory was 94.4 MB in the beginning and 130.0 MB in the end (delta: 35.7 MB). Free memory was 63.7 MB in the beginning and 95.8 MB in the end (delta: -32.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 21:17:09,874 INFO L168 Benchmark]: Boogie Procedure Inliner took 87.26 ms. Allocated memory is still 130.0 MB. Free memory was 95.8 MB in the beginning and 93.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 21:17:09,875 INFO L168 Benchmark]: Boogie Preprocessor took 63.68 ms. Allocated memory is still 130.0 MB. Free memory was 93.7 MB in the beginning and 92.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 21:17:09,878 INFO L168 Benchmark]: RCFGBuilder took 577.75 ms. Allocated memory is still 130.0 MB. Free memory was 92.3 MB in the beginning and 72.7 MB in the end (delta: 19.6 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2020-11-29 21:17:09,879 INFO L168 Benchmark]: BuchiAutomizer took 9759.26 ms. Allocated memory was 130.0 MB in the beginning and 188.7 MB in the end (delta: 58.7 MB). Free memory was 72.7 MB in the beginning and 78.4 MB in the end (delta: -5.7 MB). Peak memory consumption was 54.5 MB. Max. memory is 16.1 GB. [2020-11-29 21:17:09,879 INFO L168 Benchmark]: Witness Printer took 4.34 ms. Allocated memory is still 188.7 MB. Free memory was 78.4 MB in the beginning and 77.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 21:17:09,884 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.92 ms. Allocated memory is still 94.4 MB. Free memory is still 51.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 643.05 ms. Allocated memory was 94.4 MB in the beginning and 130.0 MB in the end (delta: 35.7 MB). Free memory was 63.7 MB in the beginning and 95.8 MB in the end (delta: -32.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 87.26 ms. Allocated memory is still 130.0 MB. Free memory was 95.8 MB in the beginning and 93.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 63.68 ms. Allocated memory is still 130.0 MB. Free memory was 93.7 MB in the beginning and 92.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 577.75 ms. Allocated memory is still 130.0 MB. Free memory was 92.3 MB in the beginning and 72.7 MB in the end (delta: 19.6 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 9759.26 ms. Allocated memory was 130.0 MB in the beginning and 188.7 MB in the end (delta: 58.7 MB). Free memory was 72.7 MB in the beginning and 78.4 MB in the end (delta: -5.7 MB). Peak memory consumption was 54.5 MB. Max. memory is 16.1 GB. * Witness Printer took 4.34 ms. Allocated memory is still 188.7 MB. Free memory was 78.4 MB in the beginning and 77.3 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.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 6 terminating modules (3 trivial, 3 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -1 * n + length1 + -1 * i and consists of 5 locations. One deterministic module has affine ranking function unknown-#length-unknown[nondetString2] + -1 * i + -1 * nondetString2 and consists of 4 locations. One deterministic module has affine ranking function unknown-#length-unknown[__builtin_alloca (length1 * sizeof(char))] + -1 * s and consists of 5 locations. 3 modules have a trivial ranking function, the largest among these consists of 6 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 9.7s and 7 iterations. TraceHistogramMax:2. Analysis of lassos took 8.6s. Construction of modules took 0.2s. Büchi inclusion checks took 0.6s. Highest rank in rank-based complementation 3. Minimization of det autom 5. Minimization of nondet autom 1. Automata minimization 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 25 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 39 states and ocurred in iteration 5. Nontrivial modules had stage [3, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 126 SDtfs, 156 SDslu, 169 SDs, 0 SdLazy, 115 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc2 concLT0 SILN0 SILU0 SILI1 SILT0 lasso3 LassoPreprocessingBenchmarks: Lassos: inital175 mio100 ax110 hnf98 lsp85 ukn77 mio100 lsp60 div100 bol100 ite100 ukn100 eq168 hnf90 smp97 dnf100 smp100 tf100 neg100 sie102 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 29ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...