./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/array-memsafety/rec_strlen-alloca-1.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_e1767955-431e-4d7d-ada4-90da8c1fd9bd/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_e1767955-431e-4d7d-ada4-90da8c1fd9bd/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e1767955-431e-4d7d-ada4-90da8c1fd9bd/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e1767955-431e-4d7d-ada4-90da8c1fd9bd/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/array-memsafety/rec_strlen-alloca-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_e1767955-431e-4d7d-ada4-90da8c1fd9bd/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e1767955-431e-4d7d-ada4-90da8c1fd9bd/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 1915ee2ae984f6ece38fc0dcbac99e0ba37faddf ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 01:30:32,153 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 01:30:32,156 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 01:30:32,211 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 01:30:32,212 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 01:30:32,214 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 01:30:32,232 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 01:30:32,254 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 01:30:32,264 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 01:30:32,265 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 01:30:32,266 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 01:30:32,268 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 01:30:32,269 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 01:30:32,270 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 01:30:32,272 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 01:30:32,273 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 01:30:32,274 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 01:30:32,278 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 01:30:32,285 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 01:30:32,291 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 01:30:32,297 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 01:30:32,300 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 01:30:32,302 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 01:30:32,304 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 01:30:32,312 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 01:30:32,316 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 01:30:32,316 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 01:30:32,318 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 01:30:32,319 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 01:30:32,320 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 01:30:32,321 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 01:30:32,322 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 01:30:32,323 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 01:30:32,324 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 01:30:32,326 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 01:30:32,326 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 01:30:32,327 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 01:30:32,328 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 01:30:32,328 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 01:30:32,330 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 01:30:32,331 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 01:30:32,332 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e1767955-431e-4d7d-ada4-90da8c1fd9bd/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-11-30 01:30:32,364 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 01:30:32,365 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 01:30:32,366 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 01:30:32,367 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 01:30:32,367 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 01:30:32,368 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-30 01:30:32,368 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-30 01:30:32,369 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-30 01:30:32,369 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-30 01:30:32,370 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-30 01:30:32,370 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-30 01:30:32,371 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 01:30:32,371 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 01:30:32,372 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-30 01:30:32,372 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 01:30:32,373 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 01:30:32,373 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 01:30:32,373 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-30 01:30:32,374 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-30 01:30:32,374 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-30 01:30:32,375 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 01:30:32,375 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 01:30:32,376 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-30 01:30:32,376 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 01:30:32,376 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-30 01:30:32,377 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 01:30:32,377 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 01:30:32,377 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-30 01:30:32,378 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 01:30:32,378 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 01:30:32,378 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 01:30:32,378 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-30 01:30:32,379 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-30 01:30:32,383 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_e1767955-431e-4d7d-ada4-90da8c1fd9bd/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_e1767955-431e-4d7d-ada4-90da8c1fd9bd/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1915ee2ae984f6ece38fc0dcbac99e0ba37faddf [2020-11-30 01:30:32,718 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 01:30:32,756 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 01:30:32,767 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 01:30:32,769 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 01:30:32,769 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 01:30:32,771 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e1767955-431e-4d7d-ada4-90da8c1fd9bd/bin/uautomizer/../../sv-benchmarks/c/array-memsafety/rec_strlen-alloca-1.i [2020-11-30 01:30:32,865 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e1767955-431e-4d7d-ada4-90da8c1fd9bd/bin/uautomizer/data/4684c63f5/8d7fb0d56ff64cda9342a4550b06ccad/FLAGcceaeb562 [2020-11-30 01:30:33,559 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 01:30:33,560 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e1767955-431e-4d7d-ada4-90da8c1fd9bd/sv-benchmarks/c/array-memsafety/rec_strlen-alloca-1.i [2020-11-30 01:30:33,581 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e1767955-431e-4d7d-ada4-90da8c1fd9bd/bin/uautomizer/data/4684c63f5/8d7fb0d56ff64cda9342a4550b06ccad/FLAGcceaeb562 [2020-11-30 01:30:33,855 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e1767955-431e-4d7d-ada4-90da8c1fd9bd/bin/uautomizer/data/4684c63f5/8d7fb0d56ff64cda9342a4550b06ccad [2020-11-30 01:30:33,866 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 01:30:33,870 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 01:30:33,876 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 01:30:33,876 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 01:30:33,880 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 01:30:33,883 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:30:33" (1/1) ... [2020-11-30 01:30:33,886 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f42c42e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:30:33, skipping insertion in model container [2020-11-30 01:30:33,886 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:30:33" (1/1) ... [2020-11-30 01:30:33,895 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 01:30:33,970 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 01:30:34,404 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:30:34,416 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 01:30:34,479 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:30:34,575 INFO L208 MainTranslator]: Completed translation [2020-11-30 01:30:34,578 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:30:34 WrapperNode [2020-11-30 01:30:34,580 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 01:30:34,582 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 01:30:34,582 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 01:30:34,583 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 01:30:34,593 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:30:34" (1/1) ... [2020-11-30 01:30:34,621 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:30:34" (1/1) ... [2020-11-30 01:30:34,642 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 01:30:34,643 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 01:30:34,644 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 01:30:34,644 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 01:30:34,654 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:30:34" (1/1) ... [2020-11-30 01:30:34,654 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:30:34" (1/1) ... [2020-11-30 01:30:34,658 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:30:34" (1/1) ... [2020-11-30 01:30:34,658 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:30:34" (1/1) ... [2020-11-30 01:30:34,665 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:30:34" (1/1) ... [2020-11-30 01:30:34,669 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:30:34" (1/1) ... [2020-11-30 01:30:34,672 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:30:34" (1/1) ... [2020-11-30 01:30:34,674 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 01:30:34,675 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 01:30:34,676 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 01:30:34,676 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 01:30:34,682 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:30:34" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1767955-431e-4d7d-ada4-90da8c1fd9bd/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:30:34,757 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-30 01:30:34,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-30 01:30:34,757 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 01:30:34,758 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 01:30:34,758 INFO L130 BoogieDeclarations]: Found specification of procedure strlen_rec [2020-11-30 01:30:34,758 INFO L138 BoogieDeclarations]: Found implementation of procedure strlen_rec [2020-11-30 01:30:34,758 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 01:30:34,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 01:30:35,054 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 01:30:35,054 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-30 01:30:35,056 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:30:35 BoogieIcfgContainer [2020-11-30 01:30:35,056 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 01:30:35,058 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-30 01:30:35,058 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-30 01:30:35,062 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-30 01:30:35,063 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 01:30:35,063 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 30.11 01:30:33" (1/3) ... [2020-11-30 01:30:35,065 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@61d54f50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 30.11 01:30:35, skipping insertion in model container [2020-11-30 01:30:35,065 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 01:30:35,065 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:30:34" (2/3) ... [2020-11-30 01:30:35,066 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@61d54f50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 30.11 01:30:35, skipping insertion in model container [2020-11-30 01:30:35,066 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 01:30:35,066 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:30:35" (3/3) ... [2020-11-30 01:30:35,068 INFO L373 chiAutomizerObserver]: Analyzing ICFG rec_strlen-alloca-1.i [2020-11-30 01:30:35,120 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-30 01:30:35,120 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-30 01:30:35,120 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-30 01:30:35,121 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 01:30:35,121 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 01:30:35,121 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-30 01:30:35,121 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 01:30:35,121 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-30 01:30:35,148 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states. [2020-11-30 01:30:35,204 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 5 [2020-11-30 01:30:35,204 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 01:30:35,204 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 01:30:35,210 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-11-30 01:30:35,210 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-30 01:30:35,210 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-30 01:30:35,210 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states. [2020-11-30 01:30:35,213 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 5 [2020-11-30 01:30:35,213 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 01:30:35,213 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 01:30:35,214 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-11-30 01:30:35,214 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-30 01:30:35,223 INFO L794 eck$LassoCheckResult]: Stem: 15#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 12#L-1true havoc main_#res;havoc main_#t~nondet4, main_#t~malloc5.base, main_#t~malloc5.offset, main_#t~nondet7, main_#t~post6, main_~i~0, main_#t~ret8, main_~length1~0, main_~nondetString1~0.base, main_~nondetString1~0.offset;main_~length1~0 := main_#t~nondet4;havoc main_#t~nondet4; 11#L522true assume !(main_~length1~0 < 1); 16#L522-2true call main_#t~malloc5.base, main_#t~malloc5.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc5.base, main_#t~malloc5.offset;main_~i~0 := 0; 5#L527-3true [2020-11-30 01:30:35,223 INFO L796 eck$LassoCheckResult]: Loop: 5#L527-3true assume !!(main_~i~0 < main_~length1~0 - 1);call write~int(main_#t~nondet7, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet7; 4#L527-2true main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 5#L527-3true [2020-11-30 01:30:35,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:30:35,231 INFO L82 PathProgramCache]: Analyzing trace with hash 925669, now seen corresponding path program 1 times [2020-11-30 01:30:35,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:30:35,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930407170] [2020-11-30 01:30:35,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:30:35,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:30:35,357 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:30:35,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:30:35,373 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:30:35,422 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:30:35,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:30:35,424 INFO L82 PathProgramCache]: Analyzing trace with hash 1507, now seen corresponding path program 1 times [2020-11-30 01:30:35,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:30:35,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776703293] [2020-11-30 01:30:35,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:30:35,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:30:35,456 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:30:35,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:30:35,476 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:30:35,484 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:30:35,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:30:35,491 INFO L82 PathProgramCache]: Analyzing trace with hash 889568455, now seen corresponding path program 1 times [2020-11-30 01:30:35,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:30:35,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486212178] [2020-11-30 01:30:35,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:30:35,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:30:35,530 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:30:35,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:30:35,547 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:30:35,552 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:30:35,751 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-11-30 01:30:35,842 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 01:30:35,843 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 01:30:35,843 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 01:30:35,843 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 01:30:35,844 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-30 01:30:35,844 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:30:35,844 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 01:30:35,844 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 01:30:35,844 INFO L133 ssoRankerPreferences]: Filename of dumped script: rec_strlen-alloca-1.i_Iteration1_Lasso [2020-11-30 01:30:35,845 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 01:30:35,845 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 01:30:35,876 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:30:35,884 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:30:35,888 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:30:36,060 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:30:36,066 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:30:36,072 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:30:36,078 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:30:36,084 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:30:36,096 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:30:36,102 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:30:36,471 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 01:30:36,477 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1767955-431e-4d7d-ada4-90da8c1fd9bd/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 01:30:36,485 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 01:30:36,488 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:30:36,488 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:30:36,489 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:30:36,489 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:30:36,489 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:30:36,494 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:30:36,494 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 [2020-11-30 01:30:36,506 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1767955-431e-4d7d-ada4-90da8c1fd9bd/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) [2020-11-30 01:30:36,557 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 01:30:36,559 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:30:36,559 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:30:36,559 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:30:36,559 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:30:36,559 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:30:36,562 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:30:36,562 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 [2020-11-30 01:30:36,565 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1767955-431e-4d7d-ada4-90da8c1fd9bd/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:30:36,613 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 01:30:36,615 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:30:36,615 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:30:36,616 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:30:36,616 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:30:36,629 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 01:30:36,630 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-30 01:30:36,639 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1767955-431e-4d7d-ada4-90da8c1fd9bd/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:30:36,692 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 01:30:36,694 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:30:36,694 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:30:36,694 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:30:36,695 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:30:36,695 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:30:36,696 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:30:36,697 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 01:30:36,699 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1767955-431e-4d7d-ada4-90da8c1fd9bd/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 01:30:36,750 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 01:30:36,753 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:30:36,753 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:30:36,753 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:30:36,753 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:30:36,774 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 01:30:36,775 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-30 01:30:36,795 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-30 01:30:36,839 INFO L443 ModelExtractionUtils]: Simplification made 6 calls to the SMT solver. [2020-11-30 01:30:36,839 INFO L444 ModelExtractionUtils]: 4 out of 22 variables were initially zero. Simplification set additionally 15 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1767955-431e-4d7d-ada4-90da8c1fd9bd/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) [2020-11-30 01:30:36,849 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:30:36,853 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-11-30 01:30:36,854 INFO L510 LassoAnalysis]: Proved termination. [2020-11-30 01:30:36,854 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~length1~0, ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~length1~0 - 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2020-11-30 01:30:36,914 INFO L297 tatePredicateManager]: 3 out of 3 supporting invariants were superfluous and have been removed [2020-11-30 01:30:36,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:30:36,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:30:36,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 01:30:36,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:30:37,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:30:37,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 01:30:37,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:30:37,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:30:37,062 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 [2020-11-30 01:30:37,063 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states. Second operand 3 states. [2020-11-30 01:30:37,135 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states.. Second operand 3 states. Result 34 states and 43 transitions. Complement of second has 9 states. [2020-11-30 01:30:37,137 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 [2020-11-30 01:30:37,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-30 01:30:37,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 23 transitions. [2020-11-30 01:30:37,144 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 4 letters. Loop has 2 letters. [2020-11-30 01:30:37,145 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:30:37,145 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 6 letters. Loop has 2 letters. [2020-11-30 01:30:37,145 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:30:37,146 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 4 letters. Loop has 4 letters. [2020-11-30 01:30:37,147 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:30:37,148 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 34 states and 43 transitions. [2020-11-30 01:30:37,157 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-30 01:30:37,166 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 34 states to 12 states and 15 transitions. [2020-11-30 01:30:37,167 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2020-11-30 01:30:37,169 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2020-11-30 01:30:37,170 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 15 transitions. [2020-11-30 01:30:37,170 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-30 01:30:37,171 INFO L691 BuchiCegarLoop]: Abstraction has 12 states and 15 transitions. [2020-11-30 01:30:37,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 15 transitions. [2020-11-30 01:30:37,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-11-30 01:30:37,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-11-30 01:30:37,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 15 transitions. [2020-11-30 01:30:37,199 INFO L714 BuchiCegarLoop]: Abstraction has 12 states and 15 transitions. [2020-11-30 01:30:37,199 INFO L594 BuchiCegarLoop]: Abstraction has 12 states and 15 transitions. [2020-11-30 01:30:37,199 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-30 01:30:37,199 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 15 transitions. [2020-11-30 01:30:37,200 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-30 01:30:37,200 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 01:30:37,201 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 01:30:37,201 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:30:37,201 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-30 01:30:37,202 INFO L794 eck$LassoCheckResult]: Stem: 116#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 111#L-1 havoc main_#res;havoc main_#t~nondet4, main_#t~malloc5.base, main_#t~malloc5.offset, main_#t~nondet7, main_#t~post6, main_~i~0, main_#t~ret8, main_~length1~0, main_~nondetString1~0.base, main_~nondetString1~0.offset;main_~length1~0 := main_#t~nondet4;havoc main_#t~nondet4; 112#L522 assume !(main_~length1~0 < 1); 118#L522-2 call main_#t~malloc5.base, main_#t~malloc5.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc5.base, main_#t~malloc5.offset;main_~i~0 := 0; 119#L527-3 assume !(main_~i~0 < main_~length1~0 - 1); 122#L527-4 call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1), 1); 114#L533 call main_#t~ret8 := strlen_rec(main_~nondetString1~0.base, main_~nondetString1~0.offset);< 115#strlen_recENTRY [2020-11-30 01:30:37,202 INFO L796 eck$LassoCheckResult]: Loop: 115#strlen_recENTRY ~p.base, ~p.offset := #in~p.base, #in~p.offset;call #t~mem2 := read~int(~p.base, ~p.offset, 1); 117#L515 assume !(0 == #t~mem2);havoc #t~mem2; 113#L518 call #t~ret3 := strlen_rec(~p.base, 1 + ~p.offset);< 115#strlen_recENTRY [2020-11-30 01:30:37,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:30:37,203 INFO L82 PathProgramCache]: Analyzing trace with hash 1806816568, now seen corresponding path program 1 times [2020-11-30 01:30:37,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:30:37,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896834556] [2020-11-30 01:30:37,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:30:37,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:30:37,221 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:30:37,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:30:37,234 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:30:37,239 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:30:37,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:30:37,240 INFO L82 PathProgramCache]: Analyzing trace with hash 58722, now seen corresponding path program 1 times [2020-11-30 01:30:37,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:30:37,241 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5171920] [2020-11-30 01:30:37,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:30:37,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:30:37,248 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:30:37,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:30:37,253 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:30:37,255 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:30:37,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:30:37,256 INFO L82 PathProgramCache]: Analyzing trace with hash -1952714549, now seen corresponding path program 1 times [2020-11-30 01:30:37,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:30:37,257 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895409429] [2020-11-30 01:30:37,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:30:37,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:30:37,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:30:37,569 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895409429] [2020-11-30 01:30:37,570 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:30:37,570 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-30 01:30:37,571 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059577237] [2020-11-30 01:30:37,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:30:37,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-30 01:30:37,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-11-30 01:30:37,687 INFO L87 Difference]: Start difference. First operand 12 states and 15 transitions. cyclomatic complexity: 5 Second operand 8 states. [2020-11-30 01:30:37,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:30:37,821 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2020-11-30 01:30:37,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-30 01:30:37,824 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 19 transitions. [2020-11-30 01:30:37,825 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-30 01:30:37,826 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 13 states and 15 transitions. [2020-11-30 01:30:37,826 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2020-11-30 01:30:37,826 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2020-11-30 01:30:37,827 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 15 transitions. [2020-11-30 01:30:37,827 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-30 01:30:37,827 INFO L691 BuchiCegarLoop]: Abstraction has 13 states and 15 transitions. [2020-11-30 01:30:37,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 15 transitions. [2020-11-30 01:30:37,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2020-11-30 01:30:37,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-11-30 01:30:37,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2020-11-30 01:30:37,829 INFO L714 BuchiCegarLoop]: Abstraction has 12 states and 14 transitions. [2020-11-30 01:30:37,829 INFO L594 BuchiCegarLoop]: Abstraction has 12 states and 14 transitions. [2020-11-30 01:30:37,830 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-30 01:30:37,830 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 14 transitions. [2020-11-30 01:30:37,830 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-30 01:30:37,831 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 01:30:37,831 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 01:30:37,831 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:30:37,831 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-30 01:30:37,832 INFO L794 eck$LassoCheckResult]: Stem: 164#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 159#L-1 havoc main_#res;havoc main_#t~nondet4, main_#t~malloc5.base, main_#t~malloc5.offset, main_#t~nondet7, main_#t~post6, main_~i~0, main_#t~ret8, main_~length1~0, main_~nondetString1~0.base, main_~nondetString1~0.offset;main_~length1~0 := main_#t~nondet4;havoc main_#t~nondet4; 160#L522 assume !(main_~length1~0 < 1); 166#L522-2 call main_#t~malloc5.base, main_#t~malloc5.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc5.base, main_#t~malloc5.offset;main_~i~0 := 0; 167#L527-3 assume !!(main_~i~0 < main_~length1~0 - 1);call write~int(main_#t~nondet7, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet7; 168#L527-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 169#L527-3 assume !(main_~i~0 < main_~length1~0 - 1); 170#L527-4 call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1), 1); 162#L533 call main_#t~ret8 := strlen_rec(main_~nondetString1~0.base, main_~nondetString1~0.offset);< 163#strlen_recENTRY [2020-11-30 01:30:37,832 INFO L796 eck$LassoCheckResult]: Loop: 163#strlen_recENTRY ~p.base, ~p.offset := #in~p.base, #in~p.offset;call #t~mem2 := read~int(~p.base, ~p.offset, 1); 165#L515 assume !(0 == #t~mem2);havoc #t~mem2; 161#L518 call #t~ret3 := strlen_rec(~p.base, 1 + ~p.offset);< 163#strlen_recENTRY [2020-11-30 01:30:37,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:30:37,833 INFO L82 PathProgramCache]: Analyzing trace with hash 1185641750, now seen corresponding path program 1 times [2020-11-30 01:30:37,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:30:37,834 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248445152] [2020-11-30 01:30:37,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:30:37,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:30:37,850 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:30:37,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:30:37,864 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:30:37,869 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:30:37,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:30:37,870 INFO L82 PathProgramCache]: Analyzing trace with hash 58722, now seen corresponding path program 2 times [2020-11-30 01:30:37,871 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:30:37,871 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388160632] [2020-11-30 01:30:37,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:30:37,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:30:37,877 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:30:37,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:30:37,881 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:30:37,883 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:30:37,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:30:37,891 INFO L82 PathProgramCache]: Analyzing trace with hash -357639123, now seen corresponding path program 1 times [2020-11-30 01:30:37,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:30:37,891 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474985549] [2020-11-30 01:30:37,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:30:37,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:30:37,912 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:30:37,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:30:37,929 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:30:37,935 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:30:38,277 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2020-11-30 01:30:38,541 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 01:30:38,541 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 01:30:38,541 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 01:30:38,541 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 01:30:38,541 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-30 01:30:38,541 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:30:38,542 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 01:30:38,542 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 01:30:38,542 INFO L133 ssoRankerPreferences]: Filename of dumped script: rec_strlen-alloca-1.i_Iteration3_Lasso [2020-11-30 01:30:38,542 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 01:30:38,542 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 01:30:38,546 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:30:38,553 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:30:38,616 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:30:38,619 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:30:38,623 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:30:38,627 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:30:38,631 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:30:38,634 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:30:38,638 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:30:38,641 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:30:38,645 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:30:38,648 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:30:38,651 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:30:38,655 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:30:38,660 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:30:38,664 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:30:38,667 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:30:38,670 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:30:38,674 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:30:38,677 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:30:38,681 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:30:38,685 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:30:38,689 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:30:38,693 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:30:38,696 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:30:38,700 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:30:38,704 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:30:38,707 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 01:30:39,019 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 01:30:39,019 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1767955-431e-4d7d-ada4-90da8c1fd9bd/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) [2020-11-30 01:30:39,026 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 01:30:39,028 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:30:39,028 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:30:39,029 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:30:39,029 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:30:39,029 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:30:39,030 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 01:30:39,030 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:30:39,034 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1767955-431e-4d7d-ada4-90da8c1fd9bd/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 01:30:39,083 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 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:30:39,084 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:30:39,085 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:30:39,085 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:30:39,085 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:30:39,089 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 01:30:39,089 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-30 01:30:39,100 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1767955-431e-4d7d-ada4-90da8c1fd9bd/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 01:30:39,150 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 01:30:39,151 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:30:39,152 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:30:39,152 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:30:39,152 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:30:39,157 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 01:30:39,158 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:30:39,169 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1767955-431e-4d7d-ada4-90da8c1fd9bd/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) [2020-11-30 01:30:39,222 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 01:30:39,224 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:30:39,224 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 01:30:39,224 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:30:39,225 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2020-11-30 01:30:39,225 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:30:39,226 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2020-11-30 01:30:39,226 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 [2020-11-30 01:30:39,229 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1767955-431e-4d7d-ada4-90da8c1fd9bd/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:30:39,271 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 01:30:39,272 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 01:30:39,273 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 01:30:39,273 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 01:30:39,273 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 01:30:39,279 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 01:30:39,279 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-30 01:30:39,288 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-30 01:30:39,323 INFO L443 ModelExtractionUtils]: Simplification made 10 calls to the SMT solver. [2020-11-30 01:30:39,323 INFO L444 ModelExtractionUtils]: 1 out of 10 variables were initially zero. Simplification set additionally 6 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1767955-431e-4d7d-ada4-90da8c1fd9bd/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 01:30:39,327 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 01:30:39,331 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-11-30 01:30:39,331 INFO L510 LassoAnalysis]: Proved termination. [2020-11-30 01:30:39,331 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(strlen_rec_#in~p.offset, v_rep(select #length strlen_rec_#in~p.base)_1) = -1*strlen_rec_#in~p.offset + 1*v_rep(select #length strlen_rec_#in~p.base)_1 Supporting invariants [] [2020-11-30 01:30:39,377 INFO L297 tatePredicateManager]: 1 out of 1 supporting invariants were superfluous and have been removed [2020-11-30 01:30:39,380 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-30 01:30:39,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:30:39,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:30:39,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 01:30:39,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:30:39,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:30:39,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-30 01:30:39,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:30:39,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:30:39,498 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 [2020-11-30 01:30:39,499 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 14 transitions. cyclomatic complexity: 4 Second operand 3 states. [2020-11-30 01:30:39,535 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 14 transitions. cyclomatic complexity: 4. Second operand 3 states. Result 19 states and 21 transitions. Complement of second has 7 states. [2020-11-30 01:30:39,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-30 01:30:39,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-30 01:30:39,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 13 transitions. [2020-11-30 01:30:39,536 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 13 transitions. Stem has 9 letters. Loop has 3 letters. [2020-11-30 01:30:39,537 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:30:39,537 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 13 transitions. Stem has 12 letters. Loop has 3 letters. [2020-11-30 01:30:39,538 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:30:39,538 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 13 transitions. Stem has 9 letters. Loop has 6 letters. [2020-11-30 01:30:39,538 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 01:30:39,538 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 19 states and 21 transitions. [2020-11-30 01:30:39,539 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-30 01:30:39,540 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 19 states to 0 states and 0 transitions. [2020-11-30 01:30:39,540 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-30 01:30:39,540 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-30 01:30:39,540 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-30 01:30:39,540 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-30 01:30:39,540 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 01:30:39,540 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 01:30:39,540 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 01:30:39,540 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-30 01:30:39,540 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-11-30 01:30:39,541 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-30 01:30:39,541 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-11-30 01:30:39,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 30.11 01:30:39 BoogieIcfgContainer [2020-11-30 01:30:39,551 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-30 01:30:39,552 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 01:30:39,552 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 01:30:39,553 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 01:30:39,553 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:30:35" (3/4) ... [2020-11-30 01:30:39,557 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-30 01:30:39,557 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 01:30:39,559 INFO L168 Benchmark]: Toolchain (without parser) took 5687.94 ms. Allocated memory was 92.3 MB in the beginning and 138.4 MB in the end (delta: 46.1 MB). Free memory was 56.8 MB in the beginning and 60.4 MB in the end (delta: -3.6 MB). Peak memory consumption was 43.6 MB. Max. memory is 16.1 GB. [2020-11-30 01:30:39,561 INFO L168 Benchmark]: CDTParser took 0.98 ms. Allocated memory is still 92.3 MB. Free memory was 64.6 MB in the beginning and 64.5 MB in the end (delta: 25.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:30:39,563 INFO L168 Benchmark]: CACSL2BoogieTranslator took 704.74 ms. Allocated memory is still 92.3 MB. Free memory was 56.7 MB in the beginning and 57.7 MB in the end (delta: -1.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 01:30:39,570 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.68 ms. Allocated memory is still 92.3 MB. Free memory was 57.7 MB in the beginning and 56.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:30:39,572 INFO L168 Benchmark]: Boogie Preprocessor took 31.30 ms. Allocated memory is still 92.3 MB. Free memory was 56.1 MB in the beginning and 55.1 MB in the end (delta: 995.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:30:39,572 INFO L168 Benchmark]: RCFGBuilder took 381.09 ms. Allocated memory is still 92.3 MB. Free memory was 55.1 MB in the beginning and 41.4 MB in the end (delta: 13.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-30 01:30:39,573 INFO L168 Benchmark]: BuchiAutomizer took 4494.09 ms. Allocated memory was 92.3 MB in the beginning and 138.4 MB in the end (delta: 46.1 MB). Free memory was 41.4 MB in the beginning and 61.5 MB in the end (delta: -20.1 MB). Peak memory consumption was 27.0 MB. Max. memory is 16.1 GB. [2020-11-30 01:30:39,574 INFO L168 Benchmark]: Witness Printer took 4.80 ms. Allocated memory is still 138.4 MB. Free memory was 61.5 MB in the beginning and 60.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:30:39,581 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.98 ms. Allocated memory is still 92.3 MB. Free memory was 64.6 MB in the beginning and 64.5 MB in the end (delta: 25.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 704.74 ms. Allocated memory is still 92.3 MB. Free memory was 56.7 MB in the beginning and 57.7 MB in the end (delta: -1.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 60.68 ms. Allocated memory is still 92.3 MB. Free memory was 57.7 MB in the beginning and 56.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 31.30 ms. Allocated memory is still 92.3 MB. Free memory was 56.1 MB in the beginning and 55.1 MB in the end (delta: 995.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 381.09 ms. Allocated memory is still 92.3 MB. Free memory was 55.1 MB in the beginning and 41.4 MB in the end (delta: 13.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 4494.09 ms. Allocated memory was 92.3 MB in the beginning and 138.4 MB in the end (delta: 46.1 MB). Free memory was 41.4 MB in the beginning and 61.5 MB in the end (delta: -20.1 MB). Peak memory consumption was 27.0 MB. Max. memory is 16.1 GB. * Witness Printer took 4.80 ms. Allocated memory is still 138.4 MB. Free memory was 61.5 MB in the beginning and 60.4 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 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (1 trivial, 2 deterministic, 0 nondeterministic). One deterministic module has affine ranking function length1 + -1 * i and consists of 5 locations. One deterministic module has affine ranking function -1 * p + unknown-#length-unknown[p] and consists of 3 locations. 1 modules have a trivial ranking function, the largest among these consists of 8 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.4s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 3.7s. Construction of modules took 0.0s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 12 states and ocurred in iteration 1. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 25 SDtfs, 31 SDslu, 21 SDs, 0 SdLazy, 58 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc1 concLT0 SILN0 SILU0 SILI0 SILT0 lasso2 LassoPreprocessingBenchmarks: Lassos: inital98 mio100 ax118 hnf99 lsp79 ukn72 mio100 lsp60 div100 bol100 ite100 ukn100 eq154 hnf92 smp96 dnf100 smp100 tf100 neg100 sie103 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 32ms VariablesStem: 3 VariablesLoop: 2 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...