./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/array-memsafety/openbsd_cstrlen-alloca-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_0d2a7bbb-4fcb-485d-ae2b-5909ab95595d/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_0d2a7bbb-4fcb-485d-ae2b-5909ab95595d/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_0d2a7bbb-4fcb-485d-ae2b-5909ab95595d/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_0d2a7bbb-4fcb-485d-ae2b-5909ab95595d/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/array-memsafety/openbsd_cstrlen-alloca-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_0d2a7bbb-4fcb-485d-ae2b-5909ab95595d/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_0d2a7bbb-4fcb-485d-ae2b-5909ab95595d/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 b812e7d14425eea3a24125f5e2db40eadfc6c14c ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-6b5699a [2019-11-25 08:56:16,260 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:56:16,262 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:56:16,278 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:56:16,278 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:56:16,279 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:56:16,281 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:56:16,289 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:56:16,293 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:56:16,297 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:56:16,299 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:56:16,300 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:56:16,301 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:56:16,302 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:56:16,303 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:56:16,304 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:56:16,305 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:56:16,306 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:56:16,308 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:56:16,311 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:56:16,315 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:56:16,318 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:56:16,319 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:56:16,319 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:56:16,322 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:56:16,323 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:56:16,323 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:56:16,324 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:56:16,324 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:56:16,325 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:56:16,325 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:56:16,326 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:56:16,327 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:56:16,327 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:56:16,328 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:56:16,328 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:56:16,329 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:56:16,329 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:56:16,329 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:56:16,330 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:56:16,331 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:56:16,332 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_0d2a7bbb-4fcb-485d-ae2b-5909ab95595d/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2019-11-25 08:56:16,356 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:56:16,357 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:56:16,367 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:56:16,367 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:56:16,367 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:56:16,367 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-25 08:56:16,368 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-25 08:56:16,368 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-25 08:56:16,368 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-25 08:56:16,368 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-25 08:56:16,368 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-25 08:56:16,369 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:56:16,369 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-25 08:56:16,369 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-25 08:56:16,369 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-25 08:56:16,369 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-25 08:56:16,369 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:56:16,370 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-25 08:56:16,370 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-25 08:56:16,370 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-25 08:56:16,370 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-25 08:56:16,370 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-25 08:56:16,370 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-25 08:56:16,371 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:56:16,371 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-25 08:56:16,371 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:56:16,371 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:56:16,371 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-25 08:56:16,372 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:56:16,372 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-25 08:56:16,372 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-25 08:56:16,373 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-25 08:56:16,373 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_0d2a7bbb-4fcb-485d-ae2b-5909ab95595d/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 -> b812e7d14425eea3a24125f5e2db40eadfc6c14c [2019-11-25 08:56:16,539 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:56:16,547 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:56:16,550 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:56:16,551 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:56:16,551 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:56:16,552 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_0d2a7bbb-4fcb-485d-ae2b-5909ab95595d/bin/uautomizer/../../sv-benchmarks/c/array-memsafety/openbsd_cstrlen-alloca-1.i [2019-11-25 08:56:16,599 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0d2a7bbb-4fcb-485d-ae2b-5909ab95595d/bin/uautomizer/data/f2490fb5d/a9bea665951d43c683802d031845c6e0/FLAG8ca4f5721 [2019-11-25 08:56:17,029 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:56:17,030 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_0d2a7bbb-4fcb-485d-ae2b-5909ab95595d/sv-benchmarks/c/array-memsafety/openbsd_cstrlen-alloca-1.i [2019-11-25 08:56:17,048 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0d2a7bbb-4fcb-485d-ae2b-5909ab95595d/bin/uautomizer/data/f2490fb5d/a9bea665951d43c683802d031845c6e0/FLAG8ca4f5721 [2019-11-25 08:56:17,331 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_0d2a7bbb-4fcb-485d-ae2b-5909ab95595d/bin/uautomizer/data/f2490fb5d/a9bea665951d43c683802d031845c6e0 [2019-11-25 08:56:17,338 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:56:17,339 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-25 08:56:17,346 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:56:17,346 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:56:17,349 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:56:17,350 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:56:17" (1/1) ... [2019-11-25 08:56:17,356 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45bc1592 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:17, skipping insertion in model container [2019-11-25 08:56:17,356 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:56:17" (1/1) ... [2019-11-25 08:56:17,361 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:56:17,395 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:56:17,734 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:56:17,742 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:56:17,779 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:56:17,825 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:56:17,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:17 WrapperNode [2019-11-25 08:56:17,825 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:56:17,826 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-25 08:56:17,826 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-25 08:56:17,826 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-25 08:56:17,834 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:17" (1/1) ... [2019-11-25 08:56:17,847 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:17" (1/1) ... [2019-11-25 08:56:17,866 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-25 08:56:17,866 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:56:17,866 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:56:17,866 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:56:17,874 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:17" (1/1) ... [2019-11-25 08:56:17,875 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:17" (1/1) ... [2019-11-25 08:56:17,877 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:17" (1/1) ... [2019-11-25 08:56:17,878 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:17" (1/1) ... [2019-11-25 08:56:17,883 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:17" (1/1) ... [2019-11-25 08:56:17,887 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:17" (1/1) ... [2019-11-25 08:56:17,888 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:17" (1/1) ... [2019-11-25 08:56:17,890 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:56:17,891 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:56:17,891 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:56:17,891 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:56:17,892 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:17" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0d2a7bbb-4fcb-485d-ae2b-5909ab95595d/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 [2019-11-25 08:56:17,953 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-25 08:56:17,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-25 08:56:17,953 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-25 08:56:17,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-25 08:56:17,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:56:17,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:56:18,260 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:56:18,260 INFO L284 CfgBuilder]: Removed 8 assume(true) statements. [2019-11-25 08:56:18,261 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:56:18 BoogieIcfgContainer [2019-11-25 08:56:18,262 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:56:18,262 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-25 08:56:18,262 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-25 08:56:18,265 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-25 08:56:18,266 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-25 08:56:18,266 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 25.11 08:56:17" (1/3) ... [2019-11-25 08:56:18,267 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1c198f98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 25.11 08:56:18, skipping insertion in model container [2019-11-25 08:56:18,268 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-25 08:56:18,268 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:17" (2/3) ... [2019-11-25 08:56:18,268 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1c198f98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 25.11 08:56:18, skipping insertion in model container [2019-11-25 08:56:18,268 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-25 08:56:18,269 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:56:18" (3/3) ... [2019-11-25 08:56:18,271 INFO L371 chiAutomizerObserver]: Analyzing ICFG openbsd_cstrlen-alloca-1.i [2019-11-25 08:56:18,321 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-25 08:56:18,321 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-25 08:56:18,321 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-25 08:56:18,322 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:56:18,322 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:56:18,322 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-25 08:56:18,322 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:56:18,322 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-25 08:56:18,337 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states. [2019-11-25 08:56:18,360 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 5 [2019-11-25 08:56:18,360 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:56:18,360 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:56:18,366 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-11-25 08:56:18,366 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-25 08:56:18,366 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-25 08:56:18,366 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states. [2019-11-25 08:56:18,368 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 5 [2019-11-25 08:56:18,368 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:56:18,368 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:56:18,368 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-11-25 08:56:18,368 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-25 08:56:18,375 INFO L794 eck$LassoCheckResult]: Stem: 13#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 12#L-1true havoc main_#res;havoc main_#t~nondet4, main_#t~malloc5.base, main_#t~malloc5.offset, main_#t~nondet7, main_#t~post6, main_~i~0, main_#t~ret8, main_~length1~0, main_~nondetString1~0.base, main_~nondetString1~0.offset;main_~length1~0 := main_#t~nondet4;havoc main_#t~nondet4; 7#L524true assume !(main_~length1~0 < 1); 11#L524-2true call main_#t~malloc5.base, main_#t~malloc5.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc5.base, main_#t~malloc5.offset;main_~i~0 := 0; 5#L528-3true [2019-11-25 08:56:18,376 INFO L796 eck$LassoCheckResult]: Loop: 5#L528-3true 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; 3#L528-2true main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 5#L528-3true [2019-11-25 08:56:18,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:18,381 INFO L82 PathProgramCache]: Analyzing trace with hash 925669, now seen corresponding path program 1 times [2019-11-25 08:56:18,388 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:56:18,388 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147161523] [2019-11-25 08:56:18,388 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:56:18,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:18,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:18,497 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:56:18,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:18,499 INFO L82 PathProgramCache]: Analyzing trace with hash 1507, now seen corresponding path program 1 times [2019-11-25 08:56:18,499 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:56:18,499 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846321109] [2019-11-25 08:56:18,499 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:56:18,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:18,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:18,516 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:56:18,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:18,518 INFO L82 PathProgramCache]: Analyzing trace with hash 889568455, now seen corresponding path program 1 times [2019-11-25 08:56:18,518 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:56:18,519 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471887253] [2019-11-25 08:56:18,519 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:56:18,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:18,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:18,551 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:56:18,785 WARN L192 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2019-11-25 08:56:18,864 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:56:18,864 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:56:18,864 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:56:18,864 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:56:18,865 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:56:18,865 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:18,865 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:56:18,865 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:56:18,865 INFO L133 ssoRankerPreferences]: Filename of dumped script: openbsd_cstrlen-alloca-1.i_Iteration1_Lasso [2019-11-25 08:56:18,865 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:56:18,865 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:56:18,884 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:18,893 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:18,901 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:18,904 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:18,908 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:18,911 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:18,915 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:19,061 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:19,066 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:19,071 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:19,316 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:56:19,322 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0d2a7bbb-4fcb-485d-ae2b-5909ab95595d/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) [2019-11-25 08:56:19,338 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 [2019-11-25 08:56:19,340 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:56:19,340 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:56:19,341 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:56:19,341 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:56:19,341 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:56:19,345 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:56:19,345 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:19,350 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0d2a7bbb-4fcb-485d-ae2b-5909ab95595d/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) [2019-11-25 08:56:19,365 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 [2019-11-25 08:56:19,367 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:56:19,367 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:56:19,368 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:56:19,368 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:56:19,368 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:56:19,369 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:56:19,369 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:19,377 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0d2a7bbb-4fcb-485d-ae2b-5909ab95595d/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) [2019-11-25 08:56:19,396 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 [2019-11-25 08:56:19,398 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:56:19,398 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:56:19,398 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:56:19,398 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:56:19,399 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:56:19,402 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:56:19,403 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:19,406 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0d2a7bbb-4fcb-485d-ae2b-5909ab95595d/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) [2019-11-25 08:56:19,420 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 [2019-11-25 08:56:19,422 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:56:19,422 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:56:19,422 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:56:19,422 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:56:19,432 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:56:19,432 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:19,436 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0d2a7bbb-4fcb-485d-ae2b-5909ab95595d/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) [2019-11-25 08:56:19,441 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 [2019-11-25 08:56:19,443 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:56:19,443 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:56:19,443 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:56:19,444 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:56:19,446 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:56:19,447 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:19,450 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0d2a7bbb-4fcb-485d-ae2b-5909ab95595d/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) [2019-11-25 08:56:19,467 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 [2019-11-25 08:56:19,469 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:56:19,469 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:56:19,469 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:56:19,470 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:56:19,472 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:56:19,472 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:19,476 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0d2a7bbb-4fcb-485d-ae2b-5909ab95595d/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) [2019-11-25 08:56:19,492 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 [2019-11-25 08:56:19,494 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:56:19,494 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:56:19,494 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:56:19,494 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:56:19,495 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:56:19,495 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:56:19,495 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:56:19,501 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0d2a7bbb-4fcb-485d-ae2b-5909ab95595d/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) [2019-11-25 08:56:19,515 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 [2019-11-25 08:56:19,516 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:56:19,517 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:56:19,517 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:56:19,517 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:56:19,525 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:56:19,525 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:19,539 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:56:19,574 INFO L443 ModelExtractionUtils]: Simplification made 7 calls to the SMT solver. [2019-11-25 08:56:19,574 INFO L444 ModelExtractionUtils]: 8 out of 22 variables were initially zero. Simplification set additionally 11 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0d2a7bbb-4fcb-485d-ae2b-5909ab95595d/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) [2019-11-25 08:56:19,585 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:19,589 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2019-11-25 08:56:19,590 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:56:19,590 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 [] [2019-11-25 08:56:19,610 INFO L297 tatePredicateManager]: 3 out of 3 supporting invariants were superfluous and have been removed [2019-11-25 08:56:19,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:19,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:19,657 INFO L255 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:56:19,658 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:56:19,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:19,673 INFO L255 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:56:19,674 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:56:19,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:56:19,700 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 [2019-11-25 08:56:19,702 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states. Second operand 3 states. [2019-11-25 08:56:19,747 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states.. Second operand 3 states. Result 35 states and 45 transitions. Complement of second has 7 states. [2019-11-25 08:56:19,747 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 [2019-11-25 08:56:19,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-25 08:56:19,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 29 transitions. [2019-11-25 08:56:19,751 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 29 transitions. Stem has 4 letters. Loop has 2 letters. [2019-11-25 08:56:19,752 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:56:19,752 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 29 transitions. Stem has 6 letters. Loop has 2 letters. [2019-11-25 08:56:19,752 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:56:19,752 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 29 transitions. Stem has 4 letters. Loop has 4 letters. [2019-11-25 08:56:19,753 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:56:19,753 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 45 transitions. [2019-11-25 08:56:19,761 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-25 08:56:19,765 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 11 states and 14 transitions. [2019-11-25 08:56:19,766 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2019-11-25 08:56:19,767 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2019-11-25 08:56:19,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 14 transitions. [2019-11-25 08:56:19,768 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-25 08:56:19,768 INFO L688 BuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2019-11-25 08:56:19,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 14 transitions. [2019-11-25 08:56:19,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2019-11-25 08:56:19,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-11-25 08:56:19,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 14 transitions. [2019-11-25 08:56:19,794 INFO L711 BuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2019-11-25 08:56:19,794 INFO L591 BuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2019-11-25 08:56:19,794 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-25 08:56:19,794 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 14 transitions. [2019-11-25 08:56:19,796 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-25 08:56:19,796 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:56:19,796 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:56:19,797 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2019-11-25 08:56:19,797 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-25 08:56:19,798 INFO L794 eck$LassoCheckResult]: Stem: 111#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 107#L-1 havoc main_#res;havoc main_#t~nondet4, main_#t~malloc5.base, main_#t~malloc5.offset, main_#t~nondet7, main_#t~post6, main_~i~0, main_#t~ret8, main_~length1~0, main_~nondetString1~0.base, main_~nondetString1~0.offset;main_~length1~0 := main_#t~nondet4;havoc main_#t~nondet4; 108#L524 assume !(main_~length1~0 < 1); 117#L524-2 call main_#t~malloc5.base, main_#t~malloc5.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc5.base, main_#t~malloc5.offset;main_~i~0 := 0; 114#L528-3 assume !(main_~i~0 < main_~length1~0 - 1); 115#L528-4 call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1), 1);cstrlen_#in~str.base, cstrlen_#in~str.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset;havoc cstrlen_#res;havoc cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset, cstrlen_#t~mem3, cstrlen_~str.base, cstrlen_~str.offset, cstrlen_~s~0.base, cstrlen_~s~0.offset;cstrlen_~str.base, cstrlen_~str.offset := cstrlen_#in~str.base, cstrlen_#in~str.offset;havoc cstrlen_~s~0.base, cstrlen_~s~0.offset;cstrlen_~s~0.base, cstrlen_~s~0.offset := cstrlen_~str.base, cstrlen_~str.offset; 113#L518-4 [2019-11-25 08:56:19,798 INFO L796 eck$LassoCheckResult]: Loop: 113#L518-4 call cstrlen_#t~mem3 := read~int(cstrlen_~s~0.base, cstrlen_~s~0.offset, 1); 116#L518-1 assume !!(0 != cstrlen_#t~mem3);havoc cstrlen_#t~mem3; 112#L518-3 cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset := cstrlen_~s~0.base, 1 + cstrlen_~s~0.offset;cstrlen_~s~0.base, cstrlen_~s~0.offset := cstrlen_~s~0.base, 1 + cstrlen_~s~0.offset;havoc cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset; 113#L518-4 [2019-11-25 08:56:19,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:19,798 INFO L82 PathProgramCache]: Analyzing trace with hash 889568397, now seen corresponding path program 1 times [2019-11-25 08:56:19,799 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:56:19,799 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711550696] [2019-11-25 08:56:19,799 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:56:19,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:19,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:19,863 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:56:19,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:19,866 INFO L82 PathProgramCache]: Analyzing trace with hash 56764, now seen corresponding path program 1 times [2019-11-25 08:56:19,867 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:56:19,867 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090707618] [2019-11-25 08:56:19,870 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:56:19,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:19,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:19,886 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:56:19,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:19,890 INFO L82 PathProgramCache]: Analyzing trace with hash 1183925680, now seen corresponding path program 1 times [2019-11-25 08:56:19,891 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:56:19,891 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130837744] [2019-11-25 08:56:19,892 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:56:19,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:20,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:56:20,072 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130837744] [2019-11-25 08:56:20,073 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:56:20,073 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-25 08:56:20,073 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465332293] [2019-11-25 08:56:20,109 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:56:20,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-25 08:56:20,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-11-25 08:56:20,112 INFO L87 Difference]: Start difference. First operand 11 states and 14 transitions. cyclomatic complexity: 5 Second operand 7 states. [2019-11-25 08:56:20,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:56:20,190 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2019-11-25 08:56:20,191 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-25 08:56:20,191 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 17 transitions. [2019-11-25 08:56:20,192 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-25 08:56:20,193 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 12 states and 14 transitions. [2019-11-25 08:56:20,193 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2019-11-25 08:56:20,193 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2019-11-25 08:56:20,193 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 14 transitions. [2019-11-25 08:56:20,193 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-25 08:56:20,194 INFO L688 BuchiCegarLoop]: Abstraction has 12 states and 14 transitions. [2019-11-25 08:56:20,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 14 transitions. [2019-11-25 08:56:20,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2019-11-25 08:56:20,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-11-25 08:56:20,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2019-11-25 08:56:20,195 INFO L711 BuchiCegarLoop]: Abstraction has 11 states and 13 transitions. [2019-11-25 08:56:20,195 INFO L591 BuchiCegarLoop]: Abstraction has 11 states and 13 transitions. [2019-11-25 08:56:20,195 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-25 08:56:20,196 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 13 transitions. [2019-11-25 08:56:20,196 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-25 08:56:20,196 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:56:20,196 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:56:20,197 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:56:20,197 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-25 08:56:20,197 INFO L794 eck$LassoCheckResult]: Stem: 153#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 149#L-1 havoc main_#res;havoc main_#t~nondet4, main_#t~malloc5.base, main_#t~malloc5.offset, main_#t~nondet7, main_#t~post6, main_~i~0, main_#t~ret8, main_~length1~0, main_~nondetString1~0.base, main_~nondetString1~0.offset;main_~length1~0 := main_#t~nondet4;havoc main_#t~nondet4; 150#L524 assume !(main_~length1~0 < 1); 159#L524-2 call main_#t~malloc5.base, main_#t~malloc5.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc5.base, main_#t~malloc5.offset;main_~i~0 := 0; 156#L528-3 assume !!(main_~i~0 < main_~length1~0 - 1);call write~int(main_#t~nondet7, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet7; 151#L528-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 152#L528-3 assume !(main_~i~0 < main_~length1~0 - 1); 157#L528-4 call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1), 1);cstrlen_#in~str.base, cstrlen_#in~str.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset;havoc cstrlen_#res;havoc cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset, cstrlen_#t~mem3, cstrlen_~str.base, cstrlen_~str.offset, cstrlen_~s~0.base, cstrlen_~s~0.offset;cstrlen_~str.base, cstrlen_~str.offset := cstrlen_#in~str.base, cstrlen_#in~str.offset;havoc cstrlen_~s~0.base, cstrlen_~s~0.offset;cstrlen_~s~0.base, cstrlen_~s~0.offset := cstrlen_~str.base, cstrlen_~str.offset; 155#L518-4 [2019-11-25 08:56:20,197 INFO L796 eck$LassoCheckResult]: Loop: 155#L518-4 call cstrlen_#t~mem3 := read~int(cstrlen_~s~0.base, cstrlen_~s~0.offset, 1); 158#L518-1 assume !!(0 != cstrlen_#t~mem3);havoc cstrlen_#t~mem3; 154#L518-3 cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset := cstrlen_~s~0.base, 1 + cstrlen_~s~0.offset;cstrlen_~s~0.base, cstrlen_~s~0.offset := cstrlen_~s~0.base, 1 + cstrlen_~s~0.offset;havoc cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset; 155#L518-4 [2019-11-25 08:56:20,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:20,198 INFO L82 PathProgramCache]: Analyzing trace with hash 176793839, now seen corresponding path program 1 times [2019-11-25 08:56:20,198 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:56:20,198 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926562945] [2019-11-25 08:56:20,198 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:56:20,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:20,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:20,227 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:56:20,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:20,228 INFO L82 PathProgramCache]: Analyzing trace with hash 56764, now seen corresponding path program 2 times [2019-11-25 08:56:20,228 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:56:20,228 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631615268] [2019-11-25 08:56:20,228 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:56:20,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:20,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:20,240 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:56:20,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:20,242 INFO L82 PathProgramCache]: Analyzing trace with hash 1235379726, now seen corresponding path program 1 times [2019-11-25 08:56:20,242 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:56:20,242 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402624875] [2019-11-25 08:56:20,242 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:56:20,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:20,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:20,305 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:56:20,609 WARN L192 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2019-11-25 08:56:20,705 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:56:20,705 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:56:20,706 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:56:20,706 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:56:20,706 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:56:20,706 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:20,706 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:56:20,706 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:56:20,706 INFO L133 ssoRankerPreferences]: Filename of dumped script: openbsd_cstrlen-alloca-1.i_Iteration3_Lasso [2019-11-25 08:56:20,706 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:56:20,706 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:56:20,709 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:20,713 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:20,718 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:20,720 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:20,722 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:20,725 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:20,889 WARN L192 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 43 [2019-11-25 08:56:20,947 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:20,953 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:20,955 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:20,966 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:20,969 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:20,971 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:20,974 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:20,977 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:20,979 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:20,982 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:21,341 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:56:21,341 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0d2a7bbb-4fcb-485d-ae2b-5909ab95595d/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 [2019-11-25 08:56:21,349 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 [2019-11-25 08:56:21,350 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:56:21,351 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:56:21,351 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:56:21,351 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:56:21,351 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:56:21,351 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:56:21,351 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:56:21,352 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0d2a7bbb-4fcb-485d-ae2b-5909ab95595d/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 [2019-11-25 08:56:21,357 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:56:21,358 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:56:21,358 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:56:21,358 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:56:21,358 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:56:21,358 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:56:21,358 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:56:21,358 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:56:21,359 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0d2a7bbb-4fcb-485d-ae2b-5909ab95595d/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 [2019-11-25 08:56:21,368 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:56:21,369 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:56:21,369 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:56:21,369 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:56:21,369 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:56:21,369 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:56:21,370 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:56:21,370 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:56:21,371 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0d2a7bbb-4fcb-485d-ae2b-5909ab95595d/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 [2019-11-25 08:56:21,377 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:56:21,378 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:56:21,378 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:56:21,379 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:56:21,379 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:56:21,379 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:56:21,379 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:56:21,379 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:56:21,380 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0d2a7bbb-4fcb-485d-ae2b-5909ab95595d/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 [2019-11-25 08:56:21,384 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 [2019-11-25 08:56:21,385 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:56:21,385 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:56:21,385 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:56:21,385 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:56:21,387 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:56:21,387 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-25 08:56:21,390 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0d2a7bbb-4fcb-485d-ae2b-5909ab95595d/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 [2019-11-25 08:56:21,394 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 [2019-11-25 08:56:21,396 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:56:21,396 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:56:21,396 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:56:21,397 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:56:21,409 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:56:21,410 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-25 08:56:21,425 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:56:21,566 INFO L443 ModelExtractionUtils]: Simplification made 14 calls to the SMT solver. [2019-11-25 08:56:21,566 INFO L444 ModelExtractionUtils]: 16 out of 31 variables were initially zero. Simplification set additionally 10 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0d2a7bbb-4fcb-485d-ae2b-5909ab95595d/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) [2019-11-25 08:56:21,582 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:21,585 INFO L438 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2019-11-25 08:56:21,585 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:56:21,585 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_cstrlen_~s~0.offset) = -2*ULTIMATE.start_cstrlen_~s~0.offset + 3 Supporting invariants [-1*v_rep(select #length ULTIMATE.start_main_~nondetString1~0.base)_2 + 2 >= 0] [2019-11-25 08:56:21,600 INFO L297 tatePredicateManager]: 4 out of 6 supporting invariants were superfluous and have been removed [2019-11-25 08:56:21,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:21,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:21,656 INFO L255 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 14 conjunts are in the unsatisfiable core [2019-11-25 08:56:21,657 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:56:21,689 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-25 08:56:21,690 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:56:21,700 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:56:21,700 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-25 08:56:21,700 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:10 [2019-11-25 08:56:21,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:21,767 WARN L253 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-25 08:56:21,767 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:56:21,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:56:21,787 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.4 stem predicates 2 loop predicates [2019-11-25 08:56:21,788 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 13 transitions. cyclomatic complexity: 4 Second operand 6 states. [2019-11-25 08:56:21,919 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 13 transitions. cyclomatic complexity: 4. Second operand 6 states. Result 23 states and 27 transitions. Complement of second has 9 states. [2019-11-25 08:56:21,920 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 4 stem states 1 non-accepting loop states 2 accepting loop states [2019-11-25 08:56:21,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-11-25 08:56:21,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 18 transitions. [2019-11-25 08:56:21,921 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 18 transitions. Stem has 8 letters. Loop has 3 letters. [2019-11-25 08:56:21,921 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:56:21,921 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 18 transitions. Stem has 11 letters. Loop has 3 letters. [2019-11-25 08:56:21,921 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:56:21,921 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 18 transitions. Stem has 8 letters. Loop has 6 letters. [2019-11-25 08:56:21,922 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:56:21,922 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 27 transitions. [2019-11-25 08:56:21,923 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-25 08:56:21,923 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 16 states and 18 transitions. [2019-11-25 08:56:21,923 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2019-11-25 08:56:21,923 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2019-11-25 08:56:21,924 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 18 transitions. [2019-11-25 08:56:21,924 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-25 08:56:21,924 INFO L688 BuchiCegarLoop]: Abstraction has 16 states and 18 transitions. [2019-11-25 08:56:21,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states and 18 transitions. [2019-11-25 08:56:21,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 13. [2019-11-25 08:56:21,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-11-25 08:56:21,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2019-11-25 08:56:21,925 INFO L711 BuchiCegarLoop]: Abstraction has 13 states and 15 transitions. [2019-11-25 08:56:21,925 INFO L591 BuchiCegarLoop]: Abstraction has 13 states and 15 transitions. [2019-11-25 08:56:21,926 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-25 08:56:21,926 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 15 transitions. [2019-11-25 08:56:21,926 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-25 08:56:21,926 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:56:21,926 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:56:21,927 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1] [2019-11-25 08:56:21,927 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-25 08:56:21,927 INFO L794 eck$LassoCheckResult]: Stem: 285#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 281#L-1 havoc main_#res;havoc main_#t~nondet4, main_#t~malloc5.base, main_#t~malloc5.offset, main_#t~nondet7, main_#t~post6, main_~i~0, main_#t~ret8, main_~length1~0, main_~nondetString1~0.base, main_~nondetString1~0.offset;main_~length1~0 := main_#t~nondet4;havoc main_#t~nondet4; 282#L524 assume !(main_~length1~0 < 1); 292#L524-2 call main_#t~malloc5.base, main_#t~malloc5.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc5.base, main_#t~malloc5.offset;main_~i~0 := 0; 288#L528-3 assume !!(main_~i~0 < main_~length1~0 - 1);call write~int(main_#t~nondet7, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet7; 283#L528-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 284#L528-3 assume !!(main_~i~0 < main_~length1~0 - 1);call write~int(main_#t~nondet7, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet7; 289#L528-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 293#L528-3 assume !(main_~i~0 < main_~length1~0 - 1); 291#L528-4 call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1), 1);cstrlen_#in~str.base, cstrlen_#in~str.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset;havoc cstrlen_#res;havoc cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset, cstrlen_#t~mem3, cstrlen_~str.base, cstrlen_~str.offset, cstrlen_~s~0.base, cstrlen_~s~0.offset;cstrlen_~str.base, cstrlen_~str.offset := cstrlen_#in~str.base, cstrlen_#in~str.offset;havoc cstrlen_~s~0.base, cstrlen_~s~0.offset;cstrlen_~s~0.base, cstrlen_~s~0.offset := cstrlen_~str.base, cstrlen_~str.offset; 287#L518-4 [2019-11-25 08:56:21,927 INFO L796 eck$LassoCheckResult]: Loop: 287#L518-4 call cstrlen_#t~mem3 := read~int(cstrlen_~s~0.base, cstrlen_~s~0.offset, 1); 290#L518-1 assume !!(0 != cstrlen_#t~mem3);havoc cstrlen_#t~mem3; 286#L518-3 cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset := cstrlen_~s~0.base, 1 + cstrlen_~s~0.offset;cstrlen_~s~0.base, cstrlen_~s~0.offset := cstrlen_~s~0.base, 1 + cstrlen_~s~0.offset;havoc cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset; 287#L518-4 [2019-11-25 08:56:21,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:21,927 INFO L82 PathProgramCache]: Analyzing trace with hash -1899756335, now seen corresponding path program 2 times [2019-11-25 08:56:21,927 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:56:21,928 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809033001] [2019-11-25 08:56:21,928 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:56:21,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:21,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:21,960 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:56:21,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:21,960 INFO L82 PathProgramCache]: Analyzing trace with hash 56764, now seen corresponding path program 3 times [2019-11-25 08:56:21,961 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:56:21,961 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575728004] [2019-11-25 08:56:21,961 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:56:21,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:21,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:21,972 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:56:21,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:21,972 INFO L82 PathProgramCache]: Analyzing trace with hash -856889620, now seen corresponding path program 2 times [2019-11-25 08:56:21,973 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:56:21,973 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061121443] [2019-11-25 08:56:21,973 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:56:21,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:22,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:22,019 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:56:22,394 WARN L192 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 79 [2019-11-25 08:56:22,479 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:56:22,479 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:56:22,479 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:56:22,479 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:56:22,480 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:56:22,480 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:22,480 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:56:22,480 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:56:22,480 INFO L133 ssoRankerPreferences]: Filename of dumped script: openbsd_cstrlen-alloca-1.i_Iteration4_Lasso [2019-11-25 08:56:22,480 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:56:22,480 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:56:22,483 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:22,488 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:22,490 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:22,493 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:22,495 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:22,497 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:22,499 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:22,502 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:22,503 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:22,505 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:22,508 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:22,509 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:22,632 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 42 [2019-11-25 08:56:22,670 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:22,673 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:22,682 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:22,938 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:56:22,938 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0d2a7bbb-4fcb-485d-ae2b-5909ab95595d/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 [2019-11-25 08:56:22,945 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 [2019-11-25 08:56:22,946 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:56:22,946 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:56:22,946 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:56:22,946 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:56:22,947 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:56:22,947 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:56:22,947 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:56:22,948 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0d2a7bbb-4fcb-485d-ae2b-5909ab95595d/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 [2019-11-25 08:56:22,953 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:56:22,954 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:56:22,954 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:56:22,954 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:56:22,954 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:56:22,955 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:56:22,955 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:56:22,955 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:56:22,956 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0d2a7bbb-4fcb-485d-ae2b-5909ab95595d/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 [2019-11-25 08:56:22,969 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 [2019-11-25 08:56:22,971 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:56:22,971 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:56:22,971 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:56:22,971 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:56:22,974 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:56:22,974 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-25 08:56:22,978 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0d2a7bbb-4fcb-485d-ae2b-5909ab95595d/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 [2019-11-25 08:56:22,985 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 [2019-11-25 08:56:22,990 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:56:22,990 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:56:22,990 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:56:22,990 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:56:22,990 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:56:22,991 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:56:22,991 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:56:23,001 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0d2a7bbb-4fcb-485d-ae2b-5909ab95595d/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) [2019-11-25 08:56:23,018 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 [2019-11-25 08:56:23,020 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:56:23,020 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:56:23,021 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:56:23,021 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:56:23,023 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:56:23,023 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:23,026 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0d2a7bbb-4fcb-485d-ae2b-5909ab95595d/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 [2019-11-25 08:56:23,035 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 [2019-11-25 08:56:23,036 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:56:23,036 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:56:23,036 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:56:23,036 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:56:23,036 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:56:23,037 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:56:23,037 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:56:23,038 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0d2a7bbb-4fcb-485d-ae2b-5909ab95595d/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 [2019-11-25 08:56:23,042 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 [2019-11-25 08:56:23,043 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:56:23,043 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:56:23,043 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:56:23,043 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:56:23,045 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:56:23,045 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-25 08:56:23,050 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0d2a7bbb-4fcb-485d-ae2b-5909ab95595d/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 [2019-11-25 08:56:23,054 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 [2019-11-25 08:56:23,055 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:56:23,055 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:56:23,055 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:56:23,055 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:56:23,055 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:56:23,056 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:56:23,056 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:56:23,057 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0d2a7bbb-4fcb-485d-ae2b-5909ab95595d/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 [2019-11-25 08:56:23,065 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 [2019-11-25 08:56:23,068 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:56:23,068 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:56:23,069 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:56:23,069 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:56:23,069 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:56:23,069 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:56:23,069 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:56:23,070 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0d2a7bbb-4fcb-485d-ae2b-5909ab95595d/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 [2019-11-25 08:56:23,074 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 [2019-11-25 08:56:23,076 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:56:23,076 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:56:23,076 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:56:23,076 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:56:23,076 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:56:23,077 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:56:23,077 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:56:23,078 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0d2a7bbb-4fcb-485d-ae2b-5909ab95595d/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 [2019-11-25 08:56:23,084 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:56:23,085 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:56:23,085 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:56:23,086 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:56:23,086 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:56:23,086 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:56:23,086 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:56:23,086 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:56:23,088 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0d2a7bbb-4fcb-485d-ae2b-5909ab95595d/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 [2019-11-25 08:56:23,092 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 [2019-11-25 08:56:23,093 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:56:23,093 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:56:23,093 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:56:23,094 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:56:23,097 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:56:23,097 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-25 08:56:23,103 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0d2a7bbb-4fcb-485d-ae2b-5909ab95595d/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 [2019-11-25 08:56:23,107 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 [2019-11-25 08:56:23,108 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:56:23,108 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:56:23,108 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:56:23,109 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:56:23,113 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:56:23,113 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-25 08:56:23,122 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0d2a7bbb-4fcb-485d-ae2b-5909ab95595d/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 [2019-11-25 08:56:23,149 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:56:23,151 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:56:23,151 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:56:23,151 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:56:23,151 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:56:23,158 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:56:23,158 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-25 08:56:23,172 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:56:23,209 INFO L443 ModelExtractionUtils]: Simplification made 17 calls to the SMT solver. [2019-11-25 08:56:23,209 INFO L444 ModelExtractionUtils]: 8 out of 31 variables were initially zero. Simplification set additionally 20 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0d2a7bbb-4fcb-485d-ae2b-5909ab95595d/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) [2019-11-25 08:56:23,213 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:23,215 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2019-11-25 08:56:23,216 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:56:23,216 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select #length ULTIMATE.start_main_#t~malloc5.base)_3, ULTIMATE.start_cstrlen_~s~0.offset) = 1*v_rep(select #length ULTIMATE.start_main_#t~malloc5.base)_3 - 1*ULTIMATE.start_cstrlen_~s~0.offset Supporting invariants [] [2019-11-25 08:56:23,233 INFO L297 tatePredicateManager]: 2 out of 3 supporting invariants were superfluous and have been removed [2019-11-25 08:56:23,235 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2019-11-25 08:56:23,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:23,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:23,281 INFO L255 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-25 08:56:23,281 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:56:23,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:23,302 WARN L253 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-25 08:56:23,302 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:56:23,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:56:23,322 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 2 loop predicates [2019-11-25 08:56:23,322 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 15 transitions. cyclomatic complexity: 4 Second operand 4 states. [2019-11-25 08:56:23,353 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 15 transitions. cyclomatic complexity: 4. Second operand 4 states. Result 16 states and 19 transitions. Complement of second has 5 states. [2019-11-25 08:56:23,354 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-25 08:56:23,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-25 08:56:23,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2019-11-25 08:56:23,355 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 10 letters. Loop has 3 letters. [2019-11-25 08:56:23,355 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:56:23,355 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 13 letters. Loop has 3 letters. [2019-11-25 08:56:23,355 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:56:23,355 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 10 letters. Loop has 6 letters. [2019-11-25 08:56:23,355 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:56:23,356 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 19 transitions. [2019-11-25 08:56:23,356 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-25 08:56:23,356 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 0 states and 0 transitions. [2019-11-25 08:56:23,356 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-25 08:56:23,357 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-25 08:56:23,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-25 08:56:23,357 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-25 08:56:23,357 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-25 08:56:23,357 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-25 08:56:23,357 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-25 08:56:23,357 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-11-25 08:56:23,357 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-25 08:56:23,357 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-25 08:56:23,357 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-25 08:56:23,363 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 25.11 08:56:23 BoogieIcfgContainer [2019-11-25 08:56:23,363 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-25 08:56:23,363 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:56:23,363 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:56:23,364 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:56:23,364 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:56:18" (3/4) ... [2019-11-25 08:56:23,367 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-25 08:56:23,367 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:56:23,368 INFO L168 Benchmark]: Toolchain (without parser) took 6029.36 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 291.0 MB). Free memory was 939.3 MB in the beginning and 1.2 GB in the end (delta: -305.6 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:56:23,369 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:56:23,369 INFO L168 Benchmark]: CACSL2BoogieTranslator took 479.68 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 166.2 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -204.3 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. [2019-11-25 08:56:23,370 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.99 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:56:23,370 INFO L168 Benchmark]: Boogie Preprocessor took 24.12 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:56:23,370 INFO L168 Benchmark]: RCFGBuilder took 371.20 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.4 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. [2019-11-25 08:56:23,371 INFO L168 Benchmark]: BuchiAutomizer took 5100.61 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 124.8 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -121.7 MB). Peak memory consumption was 3.1 MB. Max. memory is 11.5 GB. [2019-11-25 08:56:23,371 INFO L168 Benchmark]: Witness Printer took 4.20 ms. Allocated memory is still 1.3 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:56:23,374 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 479.68 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 166.2 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -204.3 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 39.99 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 24.12 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 371.20 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.4 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 5100.61 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 124.8 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -121.7 MB). Peak memory consumption was 3.1 MB. Max. memory is 11.5 GB. * Witness Printer took 4.20 ms. Allocated memory is still 1.3 GB. Free memory is still 1.2 GB. There was no memory consumed. 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 4 terminating modules (1 trivial, 3 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 -2 * s + 3 and consists of 7 locations. One deterministic module has affine ranking function unknown-#length-unknown[__builtin_alloca (length1 * sizeof(char))] + -1 * s and consists of 4 locations. 1 modules have a trivial ranking function, the largest among these consists of 7 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 5.0s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 4.2s. Construction of modules took 0.0s. Büchi inclusion checks took 0.5s. Highest rank in rank-based complementation 3. Minimization of det autom 4. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 13 states and ocurred in iteration 3. Nontrivial modules had stage [3, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 33 SDtfs, 57 SDslu, 41 SDs, 0 SdLazy, 70 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc1 concLT0 SILN0 SILU0 SILI0 SILT0 lasso3 LassoPreprocessingBenchmarks: Lassos: inital118 mio100 ax115 hnf99 lsp81 ukn84 mio100 lsp56 div100 bol100 ite100 ukn100 eq176 hnf89 smp97 dnf100 smp100 tf100 neg100 sie102 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 27ms 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...