./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/cstrlen.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_bc7dc667-62c4-45ff-82a9-c5d679725960/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_bc7dc667-62c4-45ff-82a9-c5d679725960/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_bc7dc667-62c4-45ff-82a9-c5d679725960/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_bc7dc667-62c4-45ff-82a9-c5d679725960/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/cstrlen.c -s /tmp/vcloud-vcloud-master/worker/run_dir_bc7dc667-62c4-45ff-82a9-c5d679725960/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_bc7dc667-62c4-45ff-82a9-c5d679725960/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 1e3ef20869762bcfb9d8151d96b8065864cd760e .................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 21:59:54,105 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 21:59:54,108 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 21:59:54,176 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 21:59:54,177 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 21:59:54,184 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 21:59:54,187 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 21:59:54,192 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 21:59:54,195 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 21:59:54,214 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 21:59:54,215 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 21:59:54,218 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 21:59:54,219 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 21:59:54,223 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 21:59:54,225 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 21:59:54,229 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 21:59:54,230 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 21:59:54,236 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 21:59:54,241 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 21:59:54,251 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 21:59:54,255 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 21:59:54,257 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 21:59:54,259 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 21:59:54,261 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 21:59:54,265 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 21:59:54,265 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 21:59:54,266 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 21:59:54,269 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 21:59:54,269 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 21:59:54,272 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 21:59:54,272 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 21:59:54,274 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 21:59:54,276 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 21:59:54,278 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 21:59:54,279 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 21:59:54,280 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 21:59:54,281 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 21:59:54,281 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 21:59:54,281 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 21:59:54,283 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 21:59:54,283 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 21:59:54,287 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_bc7dc667-62c4-45ff-82a9-c5d679725960/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-11-29 21:59:54,330 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 21:59:54,331 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 21:59:54,332 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 21:59:54,333 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 21:59:54,333 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 21:59:54,333 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-29 21:59:54,333 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-29 21:59:54,334 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-29 21:59:54,334 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-29 21:59:54,334 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-29 21:59:54,334 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-29 21:59:54,335 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 21:59:54,335 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 21:59:54,335 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 21:59:54,336 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 21:59:54,336 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-29 21:59:54,336 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-29 21:59:54,336 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-29 21:59:54,337 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 21:59:54,337 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-29 21:59:54,337 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 21:59:54,337 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-29 21:59:54,338 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 21:59:54,338 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 21:59:54,338 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-29 21:59:54,339 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 21:59:54,339 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 21:59:54,339 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 21:59:54,340 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-29 21:59:54,341 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-29 21:59:54,341 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_bc7dc667-62c4-45ff-82a9-c5d679725960/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_bc7dc667-62c4-45ff-82a9-c5d679725960/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1e3ef20869762bcfb9d8151d96b8065864cd760e [2020-11-29 21:59:54,633 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 21:59:54,662 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 21:59:54,665 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 21:59:54,667 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 21:59:54,668 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 21:59:54,669 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_bc7dc667-62c4-45ff-82a9-c5d679725960/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/cstrlen.c [2020-11-29 21:59:54,751 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_bc7dc667-62c4-45ff-82a9-c5d679725960/bin/uautomizer/data/09817587c/05ec50b8b71749c2a7ee51424c4c71d6/FLAG1ff30bcb5 [2020-11-29 21:59:55,448 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 21:59:55,449 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_bc7dc667-62c4-45ff-82a9-c5d679725960/sv-benchmarks/c/termination-crafted-lit/cstrlen.c [2020-11-29 21:59:55,462 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_bc7dc667-62c4-45ff-82a9-c5d679725960/bin/uautomizer/data/09817587c/05ec50b8b71749c2a7ee51424c4c71d6/FLAG1ff30bcb5 [2020-11-29 21:59:55,799 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_bc7dc667-62c4-45ff-82a9-c5d679725960/bin/uautomizer/data/09817587c/05ec50b8b71749c2a7ee51424c4c71d6 [2020-11-29 21:59:55,802 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 21:59:55,804 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 21:59:55,806 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 21:59:55,806 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 21:59:55,815 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 21:59:55,816 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 09:59:55" (1/1) ... [2020-11-29 21:59:55,820 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@396c1d6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:59:55, skipping insertion in model container [2020-11-29 21:59:55,821 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 09:59:55" (1/1) ... [2020-11-29 21:59:55,829 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 21:59:55,846 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 21:59:56,073 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 21:59:56,085 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 21:59:56,101 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 21:59:56,118 INFO L208 MainTranslator]: Completed translation [2020-11-29 21:59:56,118 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:59:56 WrapperNode [2020-11-29 21:59:56,119 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 21:59:56,120 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 21:59:56,120 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 21:59:56,120 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 21:59:56,130 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:59:56" (1/1) ... [2020-11-29 21:59:56,138 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:59:56" (1/1) ... [2020-11-29 21:59:56,160 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 21:59:56,161 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 21:59:56,162 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 21:59:56,162 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 21:59:56,169 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:59:56" (1/1) ... [2020-11-29 21:59:56,169 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:59:56" (1/1) ... [2020-11-29 21:59:56,172 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:59:56" (1/1) ... [2020-11-29 21:59:56,172 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:59:56" (1/1) ... [2020-11-29 21:59:56,179 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:59:56" (1/1) ... [2020-11-29 21:59:56,183 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:59:56" (1/1) ... [2020-11-29 21:59:56,185 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:59:56" (1/1) ... [2020-11-29 21:59:56,187 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 21:59:56,188 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 21:59:56,188 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 21:59:56,189 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 21:59:56,192 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:59:56" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bc7dc667-62c4-45ff-82a9-c5d679725960/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 21:59:56,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-29 21:59:56,289 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-29 21:59:56,290 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 21:59:56,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 21:59:56,291 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-29 21:59:56,761 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 21:59:56,761 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-29 21:59:56,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 09:59:56 BoogieIcfgContainer [2020-11-29 21:59:56,763 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 21:59:56,766 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-29 21:59:56,766 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-29 21:59:56,770 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-29 21:59:56,771 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 21:59:56,771 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 09:59:55" (1/3) ... [2020-11-29 21:59:56,772 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3b1332a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 09:59:56, skipping insertion in model container [2020-11-29 21:59:56,773 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 21:59:56,773 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:59:56" (2/3) ... [2020-11-29 21:59:56,773 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3b1332a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 09:59:56, skipping insertion in model container [2020-11-29 21:59:56,773 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 21:59:56,773 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 09:59:56" (3/3) ... [2020-11-29 21:59:56,776 INFO L373 chiAutomizerObserver]: Analyzing ICFG cstrlen.c [2020-11-29 21:59:56,848 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-29 21:59:56,848 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-29 21:59:56,849 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-29 21:59:56,849 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 21:59:56,849 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 21:59:56,849 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-29 21:59:56,849 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 21:59:56,850 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-29 21:59:56,867 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states. [2020-11-29 21:59:56,888 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-29 21:59:56,889 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 21:59:56,889 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 21:59:56,897 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2020-11-29 21:59:56,897 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-29 21:59:56,898 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-29 21:59:56,898 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states. [2020-11-29 21:59:56,901 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-29 21:59:56,901 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 21:59:56,901 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 21:59:56,902 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2020-11-29 21:59:56,902 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-29 21:59:56,912 INFO L794 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 3#L-1true havoc main_#res;havoc main_#t~ret4.base, main_#t~ret4.offset, main_#t~ret5;havoc build_nondet_String_#res.base, build_nondet_String_#res.offset;havoc build_nondet_String_#t~nondet0, build_nondet_String_#t~malloc1.base, build_nondet_String_#t~malloc1.offset, build_nondet_String_~length~0, build_nondet_String_~nondetString~0.base, build_nondet_String_~nondetString~0.offset;build_nondet_String_~length~0 := build_nondet_String_#t~nondet0;havoc build_nondet_String_#t~nondet0; 13#L14true assume !(build_nondet_String_~length~0 < 1); 8#L14-2true call build_nondet_String_#t~malloc1.base, build_nondet_String_#t~malloc1.offset := #Ultimate.allocOnHeap(build_nondet_String_~length~0);build_nondet_String_~nondetString~0.base, build_nondet_String_~nondetString~0.offset := build_nondet_String_#t~malloc1.base, build_nondet_String_#t~malloc1.offset;call write~int(0, build_nondet_String_~nondetString~0.base, build_nondet_String_~nondetString~0.offset + (build_nondet_String_~length~0 - 1), 1);build_nondet_String_#res.base, build_nondet_String_#res.offset := build_nondet_String_~nondetString~0.base, build_nondet_String_~nondetString~0.offset; 11#L19true main_#t~ret4.base, main_#t~ret4.offset := build_nondet_String_#res.base, build_nondet_String_#res.offset;cstrlen_#in~s.base, cstrlen_#in~s.offset := main_#t~ret4.base, main_#t~ret4.offset;havoc cstrlen_#res;havoc cstrlen_#t~post3.base, cstrlen_#t~post3.offset, cstrlen_#t~mem2, cstrlen_~s.base, cstrlen_~s.offset, cstrlen_~p~0.base, cstrlen_~p~0.offset;cstrlen_~s.base, cstrlen_~s.offset := cstrlen_#in~s.base, cstrlen_#in~s.offset;cstrlen_~p~0.base, cstrlen_~p~0.offset := cstrlen_~s.base, cstrlen_~s.offset; 7#L30-3true [2020-11-29 21:59:56,912 INFO L796 eck$LassoCheckResult]: Loop: 7#L30-3true call cstrlen_#t~mem2 := read~int(cstrlen_~p~0.base, cstrlen_~p~0.offset, 1); 10#L30-1true assume !!(0 != cstrlen_#t~mem2);havoc cstrlen_#t~mem2;cstrlen_#t~post3.base, cstrlen_#t~post3.offset := cstrlen_~p~0.base, cstrlen_~p~0.offset;cstrlen_~p~0.base, cstrlen_~p~0.offset := cstrlen_#t~post3.base, 1 + cstrlen_#t~post3.offset;havoc cstrlen_#t~post3.base, cstrlen_#t~post3.offset; 7#L30-3true [2020-11-29 21:59:56,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:59:56,922 INFO L82 PathProgramCache]: Analyzing trace with hash 28695750, now seen corresponding path program 1 times [2020-11-29 21:59:56,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:59:56,931 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095391598] [2020-11-29 21:59:56,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:59:57,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:59:57,081 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:59:57,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:59:57,128 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:59:57,158 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 21:59:57,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:59:57,163 INFO L82 PathProgramCache]: Analyzing trace with hash 1478, now seen corresponding path program 1 times [2020-11-29 21:59:57,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:59:57,164 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432661729] [2020-11-29 21:59:57,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:59:57,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:59:57,197 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:59:57,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:59:57,216 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:59:57,218 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 21:59:57,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:59:57,234 INFO L82 PathProgramCache]: Analyzing trace with hash 1806812491, now seen corresponding path program 1 times [2020-11-29 21:59:57,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:59:57,235 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330922365] [2020-11-29 21:59:57,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:59:57,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:59:57,278 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:59:57,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:59:57,331 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:59:57,338 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 21:59:57,830 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 65 [2020-11-29 21:59:57,993 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-11-29 21:59:58,021 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 21:59:58,022 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 21:59:58,022 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 21:59:58,023 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 21:59:58,023 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 21:59:58,023 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:59:58,023 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 21:59:58,023 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 21:59:58,024 INFO L133 ssoRankerPreferences]: Filename of dumped script: cstrlen.c_Iteration1_Lasso [2020-11-29 21:59:58,024 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 21:59:58,024 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 21:59:58,058 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 21:59:58,067 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 21:59:58,072 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:59:58,077 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 21:59:58,084 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:59:58,091 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 21:59:58,365 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2020-11-29 21:59:58,468 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 21:59:58,475 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 21:59:58,488 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 21:59:58,492 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 21:59:59,225 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 30 [2020-11-29 21:59:59,299 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 21:59:59,307 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bc7dc667-62c4-45ff-82a9-c5d679725960/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:59:59,322 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 21:59:59,325 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:59:59,325 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 21:59:59,326 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:59:59,326 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:59:59,326 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:59:59,328 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 21:59:59,329 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 21:59:59,331 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bc7dc667-62c4-45ff-82a9-c5d679725960/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:59:59,368 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 21:59:59,370 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:59:59,370 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 21:59:59,371 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:59:59,371 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:59:59,371 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:59:59,372 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 21:59:59,372 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 21:59:59,374 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bc7dc667-62c4-45ff-82a9-c5d679725960/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 21:59:59,428 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 21:59:59,430 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:59:59,430 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:59:59,430 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:59:59,430 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:59:59,435 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 21:59:59,435 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 21:59:59,440 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bc7dc667-62c4-45ff-82a9-c5d679725960/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 [2020-11-29 21:59:59,485 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 [2020-11-29 21:59:59,487 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:59:59,487 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 21:59:59,488 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:59:59,488 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:59:59,488 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:59:59,489 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 21:59:59,489 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 21:59:59,491 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bc7dc667-62c4-45ff-82a9-c5d679725960/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) [2020-11-29 21:59:59,536 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 21:59:59,538 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:59:59,538 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 21:59:59,538 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:59:59,538 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:59:59,539 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:59:59,539 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 21:59:59,540 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:59:59,542 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bc7dc667-62c4-45ff-82a9-c5d679725960/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 21:59:59,588 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 21:59:59,591 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:59:59,591 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:59:59,591 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:59:59,592 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:59:59,610 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 21:59:59,610 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 21:59:59,628 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 21:59:59,736 INFO L443 ModelExtractionUtils]: Simplification made 6 calls to the SMT solver. [2020-11-29 21:59:59,737 INFO L444 ModelExtractionUtils]: 9 out of 34 variables were initially zero. Simplification set additionally 22 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bc7dc667-62c4-45ff-82a9-c5d679725960/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) [2020-11-29 21:59:59,746 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:59:59,751 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-11-29 21:59:59,751 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 21:59:59,752 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_cstrlen_~p~0.offset, v_rep(select #length ULTIMATE.start_build_nondet_String_#t~malloc1.base)_1) = -1*ULTIMATE.start_cstrlen_~p~0.offset + 1*v_rep(select #length ULTIMATE.start_build_nondet_String_#t~malloc1.base)_1 Supporting invariants [] [2020-11-29 21:59:59,946 INFO L297 tatePredicateManager]: 3 out of 4 supporting invariants were superfluous and have been removed [2020-11-29 21:59:59,956 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-29 22:00:00,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:00:00,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:00,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-29 22:00:00,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:00:00,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:00:00,091 WARN L261 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-29 22:00:00,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:00:00,116 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 22:00:00,133 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 22:00:00,135 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states. Second operand 4 states. [2020-11-29 22:00:00,227 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states.. Second operand 4 states. Result 24 states and 27 transitions. Complement of second has 6 states. [2020-11-29 22:00:00,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-29 22:00:00,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-29 22:00:00,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 18 transitions. [2020-11-29 22:00:00,234 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 5 letters. Loop has 2 letters. [2020-11-29 22:00:00,235 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 22:00:00,236 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 7 letters. Loop has 2 letters. [2020-11-29 22:00:00,236 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 22:00:00,236 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 5 letters. Loop has 4 letters. [2020-11-29 22:00:00,236 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 22:00:00,237 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 27 transitions. [2020-11-29 22:00:00,240 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 22:00:00,243 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 0 states and 0 transitions. [2020-11-29 22:00:00,244 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-29 22:00:00,244 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-29 22:00:00,245 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-29 22:00:00,245 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 22:00:00,245 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 22:00:00,245 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 22:00:00,245 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 22:00:00,245 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-29 22:00:00,246 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-11-29 22:00:00,246 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 22:00:00,246 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-11-29 22:00:00,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.11 10:00:00 BoogieIcfgContainer [2020-11-29 22:00:00,252 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-29 22:00:00,253 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 22:00:00,253 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 22:00:00,253 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 22:00:00,254 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 09:59:56" (3/4) ... [2020-11-29 22:00:00,257 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 22:00:00,257 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 22:00:00,259 INFO L168 Benchmark]: Toolchain (without parser) took 4454.37 ms. Allocated memory was 96.5 MB in the beginning and 134.2 MB in the end (delta: 37.7 MB). Free memory was 70.1 MB in the beginning and 51.8 MB in the end (delta: 18.2 MB). Peak memory consumption was 55.3 MB. Max. memory is 16.1 GB. [2020-11-29 22:00:00,264 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 96.5 MB. Free memory is still 56.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 22:00:00,266 INFO L168 Benchmark]: CACSL2BoogieTranslator took 313.19 ms. Allocated memory is still 96.5 MB. Free memory was 69.8 MB in the beginning and 74.5 MB in the end (delta: -4.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 22:00:00,269 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.57 ms. Allocated memory is still 96.5 MB. Free memory was 74.5 MB in the beginning and 72.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 22:00:00,270 INFO L168 Benchmark]: Boogie Preprocessor took 26.05 ms. Allocated memory is still 96.5 MB. Free memory was 72.9 MB in the beginning and 71.8 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 22:00:00,271 INFO L168 Benchmark]: RCFGBuilder took 574.81 ms. Allocated memory is still 96.5 MB. Free memory was 71.6 MB in the beginning and 60.3 MB in the end (delta: 11.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-29 22:00:00,274 INFO L168 Benchmark]: BuchiAutomizer took 3486.59 ms. Allocated memory was 96.5 MB in the beginning and 134.2 MB in the end (delta: 37.7 MB). Free memory was 60.3 MB in the beginning and 52.9 MB in the end (delta: 7.4 MB). Peak memory consumption was 46.5 MB. Max. memory is 16.1 GB. [2020-11-29 22:00:00,282 INFO L168 Benchmark]: Witness Printer took 4.66 ms. Allocated memory is still 134.2 MB. Free memory was 52.9 MB in the beginning and 51.8 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 22:00:00,288 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 96.5 MB. Free memory is still 56.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 313.19 ms. Allocated memory is still 96.5 MB. Free memory was 69.8 MB in the beginning and 74.5 MB in the end (delta: -4.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 40.57 ms. Allocated memory is still 96.5 MB. Free memory was 74.5 MB in the beginning and 72.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.05 ms. Allocated memory is still 96.5 MB. Free memory was 72.9 MB in the beginning and 71.8 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 574.81 ms. Allocated memory is still 96.5 MB. Free memory was 71.6 MB in the beginning and 60.3 MB in the end (delta: 11.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 3486.59 ms. Allocated memory was 96.5 MB in the beginning and 134.2 MB in the end (delta: 37.7 MB). Free memory was 60.3 MB in the beginning and 52.9 MB in the end (delta: 7.4 MB). Peak memory consumption was 46.5 MB. Max. memory is 16.1 GB. * Witness Printer took 4.66 ms. Allocated memory is still 134.2 MB. Free memory was 52.9 MB in the beginning and 51.8 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.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 1 terminating modules (0 trivial, 1 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -1 * p + unknown-#length-unknown[malloc(length * sizeof(char))] and consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.4s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 3.0s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 0 states and ocurred in iteration 1. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 9 SDtfs, 10 SDslu, 7 SDs, 0 SdLazy, 7 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital129 mio100 ax100 hnf99 lsp95 ukn92 mio100 lsp45 div100 bol100 ite100 ukn100 eq198 hnf88 smp100 dnf128 smp94 tf100 neg98 sie107 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 26ms 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...