./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 f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_730e1fb0-89e8-4f42-b5d5-99d9f2d11de0/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_730e1fb0-89e8-4f42-b5d5-99d9f2d11de0/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_730e1fb0-89e8-4f42-b5d5-99d9f2d11de0/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_730e1fb0-89e8-4f42-b5d5-99d9f2d11de0/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/array-memsafety/rec_strlen-alloca-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_730e1fb0-89e8-4f42-b5d5-99d9f2d11de0/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_730e1fb0-89e8-4f42-b5d5-99d9f2d11de0/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 0.1.25-f470102 [2019-12-07 17:15:31,079 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 17:15:31,080 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 17:15:31,087 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 17:15:31,088 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 17:15:31,088 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 17:15:31,089 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 17:15:31,091 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 17:15:31,092 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 17:15:31,092 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 17:15:31,093 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 17:15:31,094 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 17:15:31,094 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 17:15:31,095 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 17:15:31,095 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 17:15:31,096 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 17:15:31,097 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 17:15:31,097 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 17:15:31,099 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 17:15:31,101 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 17:15:31,102 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 17:15:31,102 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 17:15:31,103 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 17:15:31,104 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 17:15:31,105 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 17:15:31,105 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 17:15:31,106 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 17:15:31,106 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 17:15:31,106 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 17:15:31,107 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 17:15:31,107 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 17:15:31,107 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 17:15:31,108 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 17:15:31,108 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 17:15:31,109 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 17:15:31,109 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 17:15:31,109 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 17:15:31,110 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 17:15:31,110 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 17:15:31,110 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 17:15:31,111 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 17:15:31,111 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_730e1fb0-89e8-4f42-b5d5-99d9f2d11de0/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2019-12-07 17:15:31,122 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 17:15:31,122 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 17:15:31,123 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 17:15:31,123 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 17:15:31,123 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 17:15:31,123 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-12-07 17:15:31,123 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-12-07 17:15:31,123 INFO L138 SettingsManager]: * Use old map elimination=false [2019-12-07 17:15:31,123 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-12-07 17:15:31,123 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-12-07 17:15:31,124 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-12-07 17:15:31,124 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 17:15:31,124 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 17:15:31,124 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 17:15:31,124 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 17:15:31,124 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 17:15:31,124 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 17:15:31,124 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-12-07 17:15:31,124 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-12-07 17:15:31,125 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-12-07 17:15:31,125 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 17:15:31,125 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 17:15:31,125 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-12-07 17:15:31,125 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 17:15:31,125 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-12-07 17:15:31,125 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 17:15:31,125 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 17:15:31,125 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-12-07 17:15:31,126 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 17:15:31,126 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 17:15:31,126 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 17:15:31,126 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-12-07 17:15:31,127 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-12-07 17:15:31,127 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR 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_730e1fb0-89e8-4f42-b5d5-99d9f2d11de0/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 [2019-12-07 17:15:31,226 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 17:15:31,233 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 17:15:31,236 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 17:15:31,236 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 17:15:31,237 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 17:15:31,237 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_730e1fb0-89e8-4f42-b5d5-99d9f2d11de0/bin/uautomizer/../../sv-benchmarks/c/array-memsafety/rec_strlen-alloca-1.i [2019-12-07 17:15:31,274 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_730e1fb0-89e8-4f42-b5d5-99d9f2d11de0/bin/uautomizer/data/e8bfbb344/0ced42e0b19f44ae87564682f2c77b61/FLAG934fce92a [2019-12-07 17:15:31,650 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 17:15:31,650 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_730e1fb0-89e8-4f42-b5d5-99d9f2d11de0/sv-benchmarks/c/array-memsafety/rec_strlen-alloca-1.i [2019-12-07 17:15:31,661 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_730e1fb0-89e8-4f42-b5d5-99d9f2d11de0/bin/uautomizer/data/e8bfbb344/0ced42e0b19f44ae87564682f2c77b61/FLAG934fce92a [2019-12-07 17:15:31,673 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_730e1fb0-89e8-4f42-b5d5-99d9f2d11de0/bin/uautomizer/data/e8bfbb344/0ced42e0b19f44ae87564682f2c77b61 [2019-12-07 17:15:31,675 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 17:15:31,677 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 17:15:31,677 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 17:15:31,678 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 17:15:31,680 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 17:15:31,681 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 05:15:31" (1/1) ... [2019-12-07 17:15:31,683 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17b95e74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:15:31, skipping insertion in model container [2019-12-07 17:15:31,683 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 05:15:31" (1/1) ... [2019-12-07 17:15:31,688 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 17:15:31,709 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 17:15:31,915 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 17:15:31,921 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 17:15:31,947 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 17:15:31,978 INFO L208 MainTranslator]: Completed translation [2019-12-07 17:15:31,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:15:31 WrapperNode [2019-12-07 17:15:31,978 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 17:15:31,979 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 17:15:31,979 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 17:15:31,979 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 17:15:31,984 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:15:31" (1/1) ... [2019-12-07 17:15:31,994 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:15:31" (1/1) ... [2019-12-07 17:15:32,005 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 17:15:32,006 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 17:15:32,006 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 17:15:32,006 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 17:15:32,012 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:15:31" (1/1) ... [2019-12-07 17:15:32,012 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:15:31" (1/1) ... [2019-12-07 17:15:32,014 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:15:31" (1/1) ... [2019-12-07 17:15:32,014 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:15:31" (1/1) ... [2019-12-07 17:15:32,017 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:15:31" (1/1) ... [2019-12-07 17:15:32,020 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:15:31" (1/1) ... [2019-12-07 17:15:32,021 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:15:31" (1/1) ... [2019-12-07 17:15:32,022 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 17:15:32,022 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 17:15:32,023 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 17:15:32,023 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 17:15:32,023 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:15:31" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_730e1fb0-89e8-4f42-b5d5-99d9f2d11de0/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 [2019-12-07 17:15:32,063 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-07 17:15:32,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 17:15:32,063 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 17:15:32,063 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 17:15:32,063 INFO L130 BoogieDeclarations]: Found specification of procedure strlen_rec [2019-12-07 17:15:32,063 INFO L138 BoogieDeclarations]: Found implementation of procedure strlen_rec [2019-12-07 17:15:32,063 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 17:15:32,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 17:15:32,191 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 17:15:32,191 INFO L287 CfgBuilder]: Removed 5 assume(true) statements. [2019-12-07 17:15:32,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:15:32 BoogieIcfgContainer [2019-12-07 17:15:32,192 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 17:15:32,193 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-12-07 17:15:32,193 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-12-07 17:15:32,195 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-12-07 17:15:32,195 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 17:15:32,195 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 07.12 05:15:31" (1/3) ... [2019-12-07 17:15:32,196 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4a5c201e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 05:15:32, skipping insertion in model container [2019-12-07 17:15:32,196 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 17:15:32,196 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:15:31" (2/3) ... [2019-12-07 17:15:32,196 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4a5c201e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 05:15:32, skipping insertion in model container [2019-12-07 17:15:32,197 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 17:15:32,197 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:15:32" (3/3) ... [2019-12-07 17:15:32,198 INFO L371 chiAutomizerObserver]: Analyzing ICFG rec_strlen-alloca-1.i [2019-12-07 17:15:32,227 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-12-07 17:15:32,227 INFO L357 BuchiCegarLoop]: Hoare is false [2019-12-07 17:15:32,228 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-12-07 17:15:32,228 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 17:15:32,228 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 17:15:32,228 INFO L361 BuchiCegarLoop]: Difference is false [2019-12-07 17:15:32,228 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 17:15:32,228 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-12-07 17:15:32,238 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states. [2019-12-07 17:15:32,255 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 5 [2019-12-07 17:15:32,255 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 17:15:32,255 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 17:15:32,259 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-12-07 17:15:32,259 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-12-07 17:15:32,260 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-12-07 17:15:32,260 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states. [2019-12-07 17:15:32,261 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 5 [2019-12-07 17:15:32,261 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 17:15:32,261 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 17:15:32,261 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-12-07 17:15:32,261 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-12-07 17:15:32,266 INFO L794 eck$LassoCheckResult]: Stem: 15#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 12#L-1true havoc main_#res;havoc main_#t~nondet4, main_#t~malloc5.base, main_#t~malloc5.offset, main_#t~nondet7, main_#t~post6, main_~i~0, main_#t~ret8, main_~length1~0, main_~nondetString1~0.base, main_~nondetString1~0.offset;main_~length1~0 := main_#t~nondet4;havoc main_#t~nondet4; 11#L522true assume !(main_~length1~0 < 1); 16#L522-2true call main_#t~malloc5.base, main_#t~malloc5.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc5.base, main_#t~malloc5.offset;main_~i~0 := 0; 5#L527-3true [2019-12-07 17:15:32,267 INFO L796 eck$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 [2019-12-07 17:15:32,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:15:32,271 INFO L82 PathProgramCache]: Analyzing trace with hash 925669, now seen corresponding path program 1 times [2019-12-07 17:15:32,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:15:32,277 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644420671] [2019-12-07 17:15:32,277 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:15:32,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:15:32,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:15:32,361 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:15:32,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:15:32,362 INFO L82 PathProgramCache]: Analyzing trace with hash 1507, now seen corresponding path program 1 times [2019-12-07 17:15:32,363 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:15:32,363 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917206313] [2019-12-07 17:15:32,363 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:15:32,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:15:32,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:15:32,380 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:15:32,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:15:32,382 INFO L82 PathProgramCache]: Analyzing trace with hash 889568455, now seen corresponding path program 1 times [2019-12-07 17:15:32,382 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:15:32,382 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653253813] [2019-12-07 17:15:32,382 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:15:32,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:15:32,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:15:32,415 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:15:32,559 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 17:15:32,559 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 17:15:32,559 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 17:15:32,559 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 17:15:32,559 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 17:15:32,559 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:15:32,560 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 17:15:32,560 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 17:15:32,560 INFO L133 ssoRankerPreferences]: Filename of dumped script: rec_strlen-alloca-1.i_Iteration1_Lasso [2019-12-07 17:15:32,560 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 17:15:32,560 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 17:15:32,579 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:15:32,583 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:15:32,585 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:15:32,586 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:15:32,589 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:15:32,591 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:15:32,593 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:15:32,596 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:15:32,598 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:15:32,599 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:15:32,794 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 17:15:32,797 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_730e1fb0-89e8-4f42-b5d5-99d9f2d11de0/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 [2019-12-07 17:15:32,801 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 [2019-12-07 17:15:32,803 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:15:32,803 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:15:32,804 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:15:32,804 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:15:32,804 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:15:32,805 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 17:15:32,805 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:15:32,807 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_730e1fb0-89e8-4f42-b5d5-99d9f2d11de0/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 [2019-12-07 17:15:32,811 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 [2019-12-07 17:15:32,812 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:15:32,812 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:15:32,812 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:15:32,812 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:15:32,812 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:15:32,813 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 17:15:32,813 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:15:32,814 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_730e1fb0-89e8-4f42-b5d5-99d9f2d11de0/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 [2019-12-07 17:15:32,819 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 [2019-12-07 17:15:32,820 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:15:32,820 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:15:32,820 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:15:32,820 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:15:32,820 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:15:32,821 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 17:15:32,821 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:15:32,822 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_730e1fb0-89e8-4f42-b5d5-99d9f2d11de0/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 [2019-12-07 17:15:32,826 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 17:15:32,827 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:15:32,827 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:15:32,827 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:15:32,828 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:15:32,830 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 17:15:32,830 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 17:15:32,833 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_730e1fb0-89e8-4f42-b5d5-99d9f2d11de0/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:15:32,837 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 [2019-12-07 17:15:32,838 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:15:32,838 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:15:32,838 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:15:32,838 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:15:32,840 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 17:15:32,840 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 17:15:32,843 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_730e1fb0-89e8-4f42-b5d5-99d9f2d11de0/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:15:32,848 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 [2019-12-07 17:15:32,849 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:15:32,849 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:15:32,849 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:15:32,849 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:15:32,851 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 17:15:32,851 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 17:15:32,854 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_730e1fb0-89e8-4f42-b5d5-99d9f2d11de0/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:15:32,857 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 [2019-12-07 17:15:32,858 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:15:32,858 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:15:32,858 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:15:32,859 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:15:32,860 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 17:15:32,860 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 17:15:32,863 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_730e1fb0-89e8-4f42-b5d5-99d9f2d11de0/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:15:32,868 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 [2019-12-07 17:15:32,869 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:15:32,869 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:15:32,869 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:15:32,869 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:15:32,871 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 17:15:32,872 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 17:15:32,875 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_730e1fb0-89e8-4f42-b5d5-99d9f2d11de0/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:15:32,883 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 [2019-12-07 17:15:32,885 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:15:32,885 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:15:32,885 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:15:32,885 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:15:32,885 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:15:32,886 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 17:15:32,886 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:15:32,887 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_730e1fb0-89e8-4f42-b5d5-99d9f2d11de0/bin/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:15:32,891 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 [2019-12-07 17:15:32,892 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:15:32,892 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:15:32,893 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:15:32,893 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:15:32,896 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 17:15:32,896 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 17:15:32,902 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_730e1fb0-89e8-4f42-b5d5-99d9f2d11de0/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 [2019-12-07 17:15:32,906 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 [2019-12-07 17:15:32,907 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:15:32,907 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:15:32,907 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:15:32,907 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:15:32,907 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:15:32,908 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 17:15:32,908 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:15:32,909 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_730e1fb0-89e8-4f42-b5d5-99d9f2d11de0/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:15:32,913 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 17:15:32,914 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:15:32,914 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:15:32,914 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:15:32,915 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:15:32,920 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 17:15:32,920 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 17:15:32,929 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 17:15:32,967 INFO L443 ModelExtractionUtils]: Simplification made 17 calls to the SMT solver. [2019-12-07 17:15:32,968 INFO L444 ModelExtractionUtils]: 6 out of 22 variables were initially zero. Simplification set additionally 13 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_730e1fb0-89e8-4f42-b5d5-99d9f2d11de0/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:15:32,975 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 17:15:32,978 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2019-12-07 17:15:32,979 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 17:15:32,979 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 [] [2019-12-07 17:15:32,991 INFO L297 tatePredicateManager]: 3 out of 3 supporting invariants were superfluous and have been removed [2019-12-07 17:15:33,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:15:33,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:15:33,033 INFO L264 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 17:15:33,035 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:15:33,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:15:33,046 INFO L264 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 17:15:33,047 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:15:33,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:15:33,073 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 [2019-12-07 17:15:33,074 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states. Second operand 3 states. [2019-12-07 17:15:33,120 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states.. Second operand 3 states. Result 34 states and 43 transitions. Complement of second has 9 states. [2019-12-07 17:15:33,121 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-12-07 17:15:33,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 17:15:33,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 23 transitions. [2019-12-07 17:15:33,124 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 4 letters. Loop has 2 letters. [2019-12-07 17:15:33,125 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:15:33,125 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 6 letters. Loop has 2 letters. [2019-12-07 17:15:33,125 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:15:33,125 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 4 letters. Loop has 4 letters. [2019-12-07 17:15:33,126 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:15:33,126 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 34 states and 43 transitions. [2019-12-07 17:15:33,129 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-12-07 17:15:33,132 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 34 states to 12 states and 15 transitions. [2019-12-07 17:15:33,133 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2019-12-07 17:15:33,133 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2019-12-07 17:15:33,134 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 15 transitions. [2019-12-07 17:15:33,134 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 17:15:33,134 INFO L688 BuchiCegarLoop]: Abstraction has 12 states and 15 transitions. [2019-12-07 17:15:33,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 15 transitions. [2019-12-07 17:15:33,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-12-07 17:15:33,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-12-07 17:15:33,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 15 transitions. [2019-12-07 17:15:33,153 INFO L711 BuchiCegarLoop]: Abstraction has 12 states and 15 transitions. [2019-12-07 17:15:33,153 INFO L591 BuchiCegarLoop]: Abstraction has 12 states and 15 transitions. [2019-12-07 17:15:33,153 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-12-07 17:15:33,153 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 15 transitions. [2019-12-07 17:15:33,153 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-12-07 17:15:33,153 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 17:15:33,153 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 17:15:33,154 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:15:33,154 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-12-07 17:15:33,154 INFO L794 eck$LassoCheckResult]: Stem: 116#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 111#L-1 havoc main_#res;havoc main_#t~nondet4, main_#t~malloc5.base, main_#t~malloc5.offset, main_#t~nondet7, main_#t~post6, main_~i~0, main_#t~ret8, main_~length1~0, main_~nondetString1~0.base, main_~nondetString1~0.offset;main_~length1~0 := main_#t~nondet4;havoc main_#t~nondet4; 112#L522 assume !(main_~length1~0 < 1); 118#L522-2 call main_#t~malloc5.base, main_#t~malloc5.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc5.base, main_#t~malloc5.offset;main_~i~0 := 0; 119#L527-3 assume !(main_~i~0 < main_~length1~0 - 1); 122#L527-4 call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1), 1); 114#L533 call main_#t~ret8 := strlen_rec(main_~nondetString1~0.base, main_~nondetString1~0.offset);< 115#strlen_recENTRY [2019-12-07 17:15:33,154 INFO L796 eck$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 [2019-12-07 17:15:33,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:15:33,154 INFO L82 PathProgramCache]: Analyzing trace with hash 1806816568, now seen corresponding path program 1 times [2019-12-07 17:15:33,155 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:15:33,155 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327613779] [2019-12-07 17:15:33,155 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:15:33,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:15:33,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:15:33,179 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:15:33,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:15:33,180 INFO L82 PathProgramCache]: Analyzing trace with hash 58722, now seen corresponding path program 1 times [2019-12-07 17:15:33,180 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:15:33,181 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073301390] [2019-12-07 17:15:33,181 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:15:33,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:15:33,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:15:33,190 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:15:33,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:15:33,190 INFO L82 PathProgramCache]: Analyzing trace with hash -1952714549, now seen corresponding path program 1 times [2019-12-07 17:15:33,190 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:15:33,191 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109642567] [2019-12-07 17:15:33,191 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:15:33,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:15:33,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:15:33,309 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109642567] [2019-12-07 17:15:33,310 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 17:15:33,310 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-12-07 17:15:33,310 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393802127] [2019-12-07 17:15:33,362 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:15:33,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-07 17:15:33,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-12-07 17:15:33,365 INFO L87 Difference]: Start difference. First operand 12 states and 15 transitions. cyclomatic complexity: 5 Second operand 8 states. [2019-12-07 17:15:33,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:15:33,426 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2019-12-07 17:15:33,426 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-12-07 17:15:33,426 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 19 transitions. [2019-12-07 17:15:33,427 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-12-07 17:15:33,428 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 13 states and 15 transitions. [2019-12-07 17:15:33,428 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2019-12-07 17:15:33,428 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2019-12-07 17:15:33,428 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 15 transitions. [2019-12-07 17:15:33,428 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 17:15:33,428 INFO L688 BuchiCegarLoop]: Abstraction has 13 states and 15 transitions. [2019-12-07 17:15:33,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 15 transitions. [2019-12-07 17:15:33,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2019-12-07 17:15:33,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-12-07 17:15:33,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2019-12-07 17:15:33,430 INFO L711 BuchiCegarLoop]: Abstraction has 12 states and 14 transitions. [2019-12-07 17:15:33,430 INFO L591 BuchiCegarLoop]: Abstraction has 12 states and 14 transitions. [2019-12-07 17:15:33,430 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-12-07 17:15:33,430 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 14 transitions. [2019-12-07 17:15:33,430 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-12-07 17:15:33,430 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 17:15:33,430 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 17:15:33,431 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:15:33,431 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-12-07 17:15:33,431 INFO L794 eck$LassoCheckResult]: Stem: 162#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 157#L-1 havoc main_#res;havoc main_#t~nondet4, main_#t~malloc5.base, main_#t~malloc5.offset, main_#t~nondet7, main_#t~post6, main_~i~0, main_#t~ret8, main_~length1~0, main_~nondetString1~0.base, main_~nondetString1~0.offset;main_~length1~0 := main_#t~nondet4;havoc main_#t~nondet4; 158#L522 assume !(main_~length1~0 < 1); 164#L522-2 call main_#t~malloc5.base, main_#t~malloc5.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc5.base, main_#t~malloc5.offset;main_~i~0 := 0; 165#L527-3 assume !!(main_~i~0 < main_~length1~0 - 1);call write~int(main_#t~nondet7, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet7; 166#L527-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 167#L527-3 assume !(main_~i~0 < main_~length1~0 - 1); 168#L527-4 call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1), 1); 160#L533 call main_#t~ret8 := strlen_rec(main_~nondetString1~0.base, main_~nondetString1~0.offset);< 161#strlen_recENTRY [2019-12-07 17:15:33,431 INFO L796 eck$LassoCheckResult]: Loop: 161#strlen_recENTRY ~p.base, ~p.offset := #in~p.base, #in~p.offset;call #t~mem2 := read~int(~p.base, ~p.offset, 1); 163#L515 assume !(0 == #t~mem2);havoc #t~mem2; 159#L518 call #t~ret3 := strlen_rec(~p.base, 1 + ~p.offset);< 161#strlen_recENTRY [2019-12-07 17:15:33,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:15:33,431 INFO L82 PathProgramCache]: Analyzing trace with hash 1185641750, now seen corresponding path program 1 times [2019-12-07 17:15:33,431 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:15:33,431 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110427904] [2019-12-07 17:15:33,432 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:15:33,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:15:33,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:15:33,449 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:15:33,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:15:33,449 INFO L82 PathProgramCache]: Analyzing trace with hash 58722, now seen corresponding path program 2 times [2019-12-07 17:15:33,449 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:15:33,450 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376225396] [2019-12-07 17:15:33,450 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:15:33,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:15:33,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:15:33,455 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:15:33,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:15:33,456 INFO L82 PathProgramCache]: Analyzing trace with hash -357639123, now seen corresponding path program 1 times [2019-12-07 17:15:33,456 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:15:33,456 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712103527] [2019-12-07 17:15:33,456 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:15:33,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:15:33,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:15:33,483 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:15:33,644 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2019-12-07 17:15:33,744 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 17:15:33,744 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 17:15:33,744 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 17:15:33,744 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 17:15:33,744 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 17:15:33,744 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:15:33,745 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 17:15:33,745 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 17:15:33,745 INFO L133 ssoRankerPreferences]: Filename of dumped script: rec_strlen-alloca-1.i_Iteration3_Lasso [2019-12-07 17:15:33,745 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 17:15:33,745 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 17:15:33,747 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:15:33,749 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:15:33,750 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:15:33,751 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:15:33,752 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:15:33,753 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:15:33,755 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:15:33,756 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:15:33,757 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:15:33,759 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:15:33,760 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:15:33,761 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:15:33,762 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:15:33,763 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:15:33,764 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:15:33,765 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:15:33,766 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:15:33,791 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:15:33,793 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:15:33,794 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:15:33,795 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:15:33,796 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:15:33,797 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:15:33,798 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:15:33,799 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:15:33,800 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:15:33,801 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:15:33,802 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:15:33,928 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 17:15:33,928 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_730e1fb0-89e8-4f42-b5d5-99d9f2d11de0/bin/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:15:33,931 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 [2019-12-07 17:15:33,932 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:15:33,933 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:15:33,933 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:15:33,933 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:15:33,933 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:15:33,933 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 17:15:33,933 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:15:33,934 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_730e1fb0-89e8-4f42-b5d5-99d9f2d11de0/bin/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:15:33,938 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 [2019-12-07 17:15:33,939 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:15:33,939 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:15:33,939 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:15:33,939 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:15:33,940 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:15:33,940 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 17:15:33,940 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:15:33,941 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_730e1fb0-89e8-4f42-b5d5-99d9f2d11de0/bin/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:15:33,945 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 [2019-12-07 17:15:33,946 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:15:33,946 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:15:33,946 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:15:33,946 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:15:33,946 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:15:33,946 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 17:15:33,946 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:15:33,947 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_730e1fb0-89e8-4f42-b5d5-99d9f2d11de0/bin/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:15:33,952 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 [2019-12-07 17:15:33,953 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:15:33,953 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:15:33,954 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:15:33,954 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:15:33,954 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:15:33,954 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 17:15:33,954 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:15:33,955 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_730e1fb0-89e8-4f42-b5d5-99d9f2d11de0/bin/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:15:33,959 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 [2019-12-07 17:15:33,960 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:15:33,961 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:15:33,961 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:15:33,961 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:15:33,962 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 17:15:33,962 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 17:15:33,964 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_730e1fb0-89e8-4f42-b5d5-99d9f2d11de0/bin/uautomizer/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:15:33,968 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 [2019-12-07 17:15:33,969 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:15:33,969 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:15:33,970 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:15:33,970 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:15:33,970 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:15:33,970 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 17:15:33,970 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:15:33,971 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_730e1fb0-89e8-4f42-b5d5-99d9f2d11de0/bin/uautomizer/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:15:33,975 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 [2019-12-07 17:15:33,976 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:15:33,976 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:15:33,977 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:15:33,977 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:15:33,977 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:15:33,977 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 17:15:33,977 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:15:33,978 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_730e1fb0-89e8-4f42-b5d5-99d9f2d11de0/bin/uautomizer/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:15:33,982 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 17:15:33,983 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:15:33,983 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:15:33,983 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:15:33,983 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:15:33,984 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:15:33,984 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 17:15:33,984 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:15:33,985 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_730e1fb0-89e8-4f42-b5d5-99d9f2d11de0/bin/uautomizer/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:15:33,992 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 [2019-12-07 17:15:33,993 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:15:33,993 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:15:33,993 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:15:33,993 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:15:33,993 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:15:33,994 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 17:15:33,994 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:15:33,995 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_730e1fb0-89e8-4f42-b5d5-99d9f2d11de0/bin/uautomizer/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:15:33,999 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 [2019-12-07 17:15:34,000 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:15:34,000 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:15:34,000 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:15:34,000 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:15:34,001 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 17:15:34,001 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 17:15:34,004 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_730e1fb0-89e8-4f42-b5d5-99d9f2d11de0/bin/uautomizer/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:15:34,008 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 [2019-12-07 17:15:34,009 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:15:34,009 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:15:34,009 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:15:34,009 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:15:34,009 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:15:34,010 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 17:15:34,010 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:15:34,011 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_730e1fb0-89e8-4f42-b5d5-99d9f2d11de0/bin/uautomizer/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:15:34,015 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 [2019-12-07 17:15:34,016 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:15:34,016 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:15:34,016 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:15:34,017 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:15:34,017 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:15:34,017 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 17:15:34,017 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:15:34,018 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_730e1fb0-89e8-4f42-b5d5-99d9f2d11de0/bin/uautomizer/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:15:34,021 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 [2019-12-07 17:15:34,022 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:15:34,022 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:15:34,022 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:15:34,022 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:15:34,022 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:15:34,023 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 17:15:34,023 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:15:34,024 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_730e1fb0-89e8-4f42-b5d5-99d9f2d11de0/bin/uautomizer/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:15:34,028 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 [2019-12-07 17:15:34,029 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:15:34,029 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:15:34,029 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:15:34,029 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:15:34,029 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:15:34,030 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 17:15:34,030 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:15:34,031 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_730e1fb0-89e8-4f42-b5d5-99d9f2d11de0/bin/uautomizer/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:15:34,034 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 [2019-12-07 17:15:34,036 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:15:34,036 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:15:34,036 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:15:34,036 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:15:34,036 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:15:34,036 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 17:15:34,036 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:15:34,038 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_730e1fb0-89e8-4f42-b5d5-99d9f2d11de0/bin/uautomizer/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:15:34,041 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 [2019-12-07 17:15:34,042 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:15:34,042 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:15:34,042 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:15:34,042 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2019-12-07 17:15:34,043 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:15:34,043 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2019-12-07 17:15:34,043 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:15:34,045 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_730e1fb0-89e8-4f42-b5d5-99d9f2d11de0/bin/uautomizer/z3 Starting monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:15:34,048 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 [2019-12-07 17:15:34,049 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:15:34,049 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:15:34,050 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:15:34,050 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:15:34,051 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 17:15:34,051 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 17:15:34,053 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_730e1fb0-89e8-4f42-b5d5-99d9f2d11de0/bin/uautomizer/z3 Starting monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:15:34,057 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 [2019-12-07 17:15:34,058 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:15:34,058 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:15:34,058 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:15:34,058 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:15:34,060 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 17:15:34,060 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 17:15:34,064 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_730e1fb0-89e8-4f42-b5d5-99d9f2d11de0/bin/uautomizer/z3 Starting monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:15:34,068 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 [2019-12-07 17:15:34,069 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:15:34,069 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:15:34,070 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:15:34,070 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:15:34,072 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 17:15:34,072 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 17:15:34,077 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 17:15:34,088 INFO L443 ModelExtractionUtils]: Simplification made 10 calls to the SMT solver. [2019-12-07 17:15:34,088 INFO L444 ModelExtractionUtils]: 2 out of 10 variables were initially zero. Simplification set additionally 5 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_730e1fb0-89e8-4f42-b5d5-99d9f2d11de0/bin/uautomizer/z3 Starting monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:15:34,090 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 17:15:34,093 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2019-12-07 17:15:34,093 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 17:15:34,093 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 [] [2019-12-07 17:15:34,097 INFO L297 tatePredicateManager]: 1 out of 1 supporting invariants were superfluous and have been removed [2019-12-07 17:15:34,098 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2019-12-07 17:15:34,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:15:34,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:15:34,116 INFO L264 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 17:15:34,117 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:15:34,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:15:34,123 INFO L264 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 11 conjunts are in the unsatisfiable core [2019-12-07 17:15:34,123 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:15:34,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:15:34,135 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 [2019-12-07 17:15:34,135 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 14 transitions. cyclomatic complexity: 4 Second operand 3 states. [2019-12-07 17:15:34,151 INFO L76 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. [2019-12-07 17:15:34,151 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-12-07 17:15:34,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 17:15:34,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 13 transitions. [2019-12-07 17:15:34,152 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 13 transitions. Stem has 9 letters. Loop has 3 letters. [2019-12-07 17:15:34,152 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:15:34,152 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 13 transitions. Stem has 12 letters. Loop has 3 letters. [2019-12-07 17:15:34,153 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:15:34,153 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 13 transitions. Stem has 9 letters. Loop has 6 letters. [2019-12-07 17:15:34,153 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:15:34,153 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 19 states and 21 transitions. [2019-12-07 17:15:34,154 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-12-07 17:15:34,154 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 19 states to 0 states and 0 transitions. [2019-12-07 17:15:34,154 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-12-07 17:15:34,154 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-12-07 17:15:34,154 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-12-07 17:15:34,154 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 17:15:34,154 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 17:15:34,154 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 17:15:34,155 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 17:15:34,155 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-12-07 17:15:34,155 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-12-07 17:15:34,155 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-12-07 17:15:34,155 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-12-07 17:15:34,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 07.12 05:15:34 BoogieIcfgContainer [2019-12-07 17:15:34,159 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-12-07 17:15:34,160 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 17:15:34,160 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 17:15:34,160 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 17:15:34,160 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:15:32" (3/4) ... [2019-12-07 17:15:34,162 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 17:15:34,163 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 17:15:34,164 INFO L168 Benchmark]: Toolchain (without parser) took 2487.22 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 95.4 MB). Free memory was 936.6 MB in the beginning and 867.4 MB in the end (delta: 69.2 MB). Peak memory consumption was 164.6 MB. Max. memory is 11.5 GB. [2019-12-07 17:15:34,164 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 954.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 17:15:34,165 INFO L168 Benchmark]: CACSL2BoogieTranslator took 301.01 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 95.4 MB). Free memory was 935.2 MB in the beginning and 1.1 GB in the end (delta: -144.1 MB). Peak memory consumption was 20.9 MB. Max. memory is 11.5 GB. [2019-12-07 17:15:34,165 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.97 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. [2019-12-07 17:15:34,166 INFO L168 Benchmark]: Boogie Preprocessor took 16.50 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. [2019-12-07 17:15:34,166 INFO L168 Benchmark]: RCFGBuilder took 169.88 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.8 MB). Peak memory consumption was 19.8 MB. Max. memory is 11.5 GB. [2019-12-07 17:15:34,167 INFO L168 Benchmark]: BuchiAutomizer took 1966.83 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 870.0 MB in the end (delta: 186.9 MB). Peak memory consumption was 186.9 MB. Max. memory is 11.5 GB. [2019-12-07 17:15:34,167 INFO L168 Benchmark]: Witness Printer took 2.96 ms. Allocated memory is still 1.1 GB. Free memory was 870.0 MB in the beginning and 867.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 11.5 GB. [2019-12-07 17:15:34,170 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 954.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 301.01 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 95.4 MB). Free memory was 935.2 MB in the beginning and 1.1 GB in the end (delta: -144.1 MB). Peak memory consumption was 20.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 26.97 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 16.50 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. * RCFGBuilder took 169.88 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.8 MB). Peak memory consumption was 19.8 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 1966.83 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 870.0 MB in the end (delta: 186.9 MB). Peak memory consumption was 186.9 MB. Max. memory is 11.5 GB. * Witness Printer took 2.96 ms. Allocated memory is still 1.1 GB. Free memory was 870.0 MB in the beginning and 867.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 11.5 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 1.9s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 1.6s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. 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, 53 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc1 concLT0 SILN0 SILU0 SILI0 SILT0 lasso2 LassoPreprocessingBenchmarks: Lassos: inital97 mio100 ax118 hnf99 lsp79 ukn71 mio100 lsp59 div100 bol100 ite100 ukn100 eq155 hnf92 smp96 dnf100 smp100 tf100 neg100 sie103 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 9ms 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...