./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 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_3a3dc497-a5cd-4cc7-bda9-2745d917611f/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_3a3dc497-a5cd-4cc7-bda9-2745d917611f/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_3a3dc497-a5cd-4cc7-bda9-2745d917611f/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_3a3dc497-a5cd-4cc7-bda9-2745d917611f/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/array-memsafety/openbsd_cstrlen-alloca-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_3a3dc497-a5cd-4cc7-bda9-2745d917611f/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_3a3dc497-a5cd-4cc7-bda9-2745d917611f/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 0.1.24-678e011 [2019-11-20 09:45:38,193 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 09:45:38,194 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 09:45:38,208 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 09:45:38,209 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 09:45:38,210 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 09:45:38,212 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 09:45:38,220 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 09:45:38,224 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 09:45:38,228 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 09:45:38,229 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 09:45:38,230 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 09:45:38,231 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 09:45:38,233 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 09:45:38,234 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 09:45:38,235 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 09:45:38,240 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 09:45:38,240 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 09:45:38,242 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 09:45:38,243 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 09:45:38,247 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 09:45:38,249 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 09:45:38,251 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 09:45:38,252 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 09:45:38,254 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 09:45:38,255 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 09:45:38,255 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 09:45:38,257 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 09:45:38,257 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 09:45:38,259 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 09:45:38,259 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 09:45:38,259 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 09:45:38,260 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 09:45:38,261 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 09:45:38,262 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 09:45:38,262 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 09:45:38,262 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 09:45:38,263 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 09:45:38,263 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 09:45:38,264 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 09:45:38,265 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 09:45:38,266 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_3a3dc497-a5cd-4cc7-bda9-2745d917611f/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2019-11-20 09:45:38,292 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 09:45:38,303 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 09:45:38,304 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 09:45:38,304 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 09:45:38,304 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 09:45:38,305 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-20 09:45:38,305 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-20 09:45:38,305 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-20 09:45:38,305 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-20 09:45:38,306 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-20 09:45:38,306 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-20 09:45:38,306 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 09:45:38,306 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 09:45:38,307 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-20 09:45:38,307 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 09:45:38,307 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 09:45:38,307 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 09:45:38,307 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-20 09:45:38,308 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-20 09:45:38,309 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-20 09:45:38,309 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 09:45:38,309 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 09:45:38,309 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-20 09:45:38,310 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 09:45:38,310 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-20 09:45:38,310 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 09:45:38,310 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 09:45:38,311 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-20 09:45:38,311 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 09:45:38,312 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 09:45:38,312 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-20 09:45:38,313 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-20 09:45:38,313 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_3a3dc497-a5cd-4cc7-bda9-2745d917611f/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 [2019-11-20 09:45:38,489 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 09:45:38,502 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 09:45:38,506 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 09:45:38,507 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 09:45:38,507 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 09:45:38,508 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_3a3dc497-a5cd-4cc7-bda9-2745d917611f/bin/uautomizer/../../sv-benchmarks/c/array-memsafety/openbsd_cstrlen-alloca-1.i [2019-11-20 09:45:38,572 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3a3dc497-a5cd-4cc7-bda9-2745d917611f/bin/uautomizer/data/566cc1fe7/775094914dec4568807c09c1270eabad/FLAG8a8f8b115 [2019-11-20 09:45:39,147 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 09:45:39,148 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_3a3dc497-a5cd-4cc7-bda9-2745d917611f/sv-benchmarks/c/array-memsafety/openbsd_cstrlen-alloca-1.i [2019-11-20 09:45:39,166 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3a3dc497-a5cd-4cc7-bda9-2745d917611f/bin/uautomizer/data/566cc1fe7/775094914dec4568807c09c1270eabad/FLAG8a8f8b115 [2019-11-20 09:45:39,535 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_3a3dc497-a5cd-4cc7-bda9-2745d917611f/bin/uautomizer/data/566cc1fe7/775094914dec4568807c09c1270eabad [2019-11-20 09:45:39,538 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 09:45:39,539 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 09:45:39,540 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 09:45:39,540 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 09:45:39,544 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 09:45:39,545 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:45:39" (1/1) ... [2019-11-20 09:45:39,548 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78eebf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:45:39, skipping insertion in model container [2019-11-20 09:45:39,548 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:45:39" (1/1) ... [2019-11-20 09:45:39,556 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 09:45:39,599 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 09:45:40,028 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 09:45:40,043 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 09:45:40,112 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 09:45:40,168 INFO L192 MainTranslator]: Completed translation [2019-11-20 09:45:40,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:45:40 WrapperNode [2019-11-20 09:45:40,169 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 09:45:40,170 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 09:45:40,170 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 09:45:40,170 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 09:45:40,179 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:45:40" (1/1) ... [2019-11-20 09:45:40,192 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:45:40" (1/1) ... [2019-11-20 09:45:40,215 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 09:45:40,215 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 09:45:40,215 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 09:45:40,216 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 09:45:40,225 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:45:40" (1/1) ... [2019-11-20 09:45:40,225 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:45:40" (1/1) ... [2019-11-20 09:45:40,244 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:45:40" (1/1) ... [2019-11-20 09:45:40,244 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:45:40" (1/1) ... [2019-11-20 09:45:40,250 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:45:40" (1/1) ... [2019-11-20 09:45:40,253 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:45:40" (1/1) ... [2019-11-20 09:45:40,255 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:45:40" (1/1) ... [2019-11-20 09:45:40,257 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 09:45:40,258 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 09:45:40,258 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 09:45:40,258 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 09:45:40,259 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:45:40" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3a3dc497-a5cd-4cc7-bda9-2745d917611f/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 [2019-11-20 09:45:40,317 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-20 09:45:40,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-20 09:45:40,317 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-20 09:45:40,317 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-20 09:45:40,317 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 09:45:40,317 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 09:45:40,629 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 09:45:40,629 INFO L285 CfgBuilder]: Removed 8 assume(true) statements. [2019-11-20 09:45:40,630 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:45:40 BoogieIcfgContainer [2019-11-20 09:45:40,631 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 09:45:40,631 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-20 09:45:40,631 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-20 09:45:40,634 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-20 09:45:40,635 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-20 09:45:40,635 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.11 09:45:39" (1/3) ... [2019-11-20 09:45:40,636 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3c6d174a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 09:45:40, skipping insertion in model container [2019-11-20 09:45:40,636 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-20 09:45:40,636 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:45:40" (2/3) ... [2019-11-20 09:45:40,637 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3c6d174a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 09:45:40, skipping insertion in model container [2019-11-20 09:45:40,637 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-20 09:45:40,637 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:45:40" (3/3) ... [2019-11-20 09:45:40,638 INFO L371 chiAutomizerObserver]: Analyzing ICFG openbsd_cstrlen-alloca-1.i [2019-11-20 09:45:40,689 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-20 09:45:40,689 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-20 09:45:40,689 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-20 09:45:40,689 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 09:45:40,690 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 09:45:40,690 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-20 09:45:40,690 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 09:45:40,690 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-20 09:45:40,704 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states. [2019-11-20 09:45:40,725 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 5 [2019-11-20 09:45:40,725 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 09:45:40,725 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 09:45:40,732 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-11-20 09:45:40,732 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-20 09:45:40,732 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-20 09:45:40,732 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states. [2019-11-20 09:45:40,735 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 5 [2019-11-20 09:45:40,735 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 09:45:40,735 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 09:45:40,735 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-11-20 09:45:40,736 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-20 09:45:40,743 INFO L794 eck$LassoCheckResult]: Stem: 13#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 12#L-1true havoc main_#res;havoc main_#t~nondet4, main_#t~malloc5.base, main_#t~malloc5.offset, main_#t~nondet7, main_#t~post6, main_~i~0, main_#t~ret8, main_~length1~0, main_~nondetString1~0.base, main_~nondetString1~0.offset;main_~length1~0 := main_#t~nondet4;havoc main_#t~nondet4; 7#L524true assume !(main_~length1~0 < 1); 11#L524-2true call main_#t~malloc5.base, main_#t~malloc5.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc5.base, main_#t~malloc5.offset;main_~i~0 := 0; 5#L528-3true [2019-11-20 09:45:40,743 INFO L796 eck$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 [2019-11-20 09:45:40,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 09:45:40,749 INFO L82 PathProgramCache]: Analyzing trace with hash 925669, now seen corresponding path program 1 times [2019-11-20 09:45:40,757 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 09:45:40,758 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312074269] [2019-11-20 09:45:40,758 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 09:45:40,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 09:45:40,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 09:45:40,869 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 09:45:40,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 09:45:40,870 INFO L82 PathProgramCache]: Analyzing trace with hash 1507, now seen corresponding path program 1 times [2019-11-20 09:45:40,870 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 09:45:40,871 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378739684] [2019-11-20 09:45:40,871 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 09:45:40,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 09:45:40,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 09:45:40,887 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 09:45:40,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 09:45:40,888 INFO L82 PathProgramCache]: Analyzing trace with hash 889568455, now seen corresponding path program 1 times [2019-11-20 09:45:40,889 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 09:45:40,889 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152483343] [2019-11-20 09:45:40,889 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 09:45:40,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 09:45:40,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 09:45:40,926 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 09:45:41,107 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2019-11-20 09:45:41,197 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 09:45:41,198 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 09:45:41,198 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 09:45:41,198 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 09:45:41,198 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 09:45:41,198 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 09:45:41,198 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 09:45:41,198 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 09:45:41,199 INFO L133 ssoRankerPreferences]: Filename of dumped script: openbsd_cstrlen-alloca-1.i_Iteration1_Lasso [2019-11-20 09:45:41,199 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 09:45:41,199 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 09:45:41,235 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 09:45:41,248 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 09:45:41,259 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 09:45:41,271 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 09:45:41,275 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 09:45:41,281 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 09:45:41,285 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 09:45:41,417 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 09:45:41,424 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 09:45:41,429 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 09:45:41,707 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 09:45:41,711 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3a3dc497-a5cd-4cc7-bda9-2745d917611f/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 09:45:41,719 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 [2019-11-20 09:45:41,721 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 09:45:41,721 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 09:45:41,721 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 09:45:41,722 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 09:45:41,722 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 09:45:41,723 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 09:45:41,724 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 09:45:41,727 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3a3dc497-a5cd-4cc7-bda9-2745d917611f/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 09:45:41,735 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 [2019-11-20 09:45:41,737 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 09:45:41,737 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 09:45:41,737 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 09:45:41,737 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 09:45:41,738 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 09:45:41,738 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 09:45:41,738 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 09:45:41,740 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3a3dc497-a5cd-4cc7-bda9-2745d917611f/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 09:45:41,745 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 [2019-11-20 09:45:41,746 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 09:45:41,746 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 09:45:41,747 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 09:45:41,747 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 09:45:41,747 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 09:45:41,750 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 09:45:41,750 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 09:45:41,755 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3a3dc497-a5cd-4cc7-bda9-2745d917611f/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) [2019-11-20 09:45:41,775 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 09:45:41,778 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 09:45:41,778 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 09:45:41,778 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 09:45:41,778 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 09:45:41,788 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 09:45:41,788 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 [2019-11-20 09:45:41,796 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3a3dc497-a5cd-4cc7-bda9-2745d917611f/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) [2019-11-20 09:45:41,804 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 [2019-11-20 09:45:41,806 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 09:45:41,806 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 09:45:41,806 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 09:45:41,806 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 09:45:41,809 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 09:45:41,810 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 09:45:41,815 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3a3dc497-a5cd-4cc7-bda9-2745d917611f/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 09:45:41,828 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 [2019-11-20 09:45:41,829 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 09:45:41,829 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 09:45:41,829 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 09:45:41,830 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 09:45:41,832 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 09:45:41,833 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 09:45:41,837 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3a3dc497-a5cd-4cc7-bda9-2745d917611f/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 09:45:41,856 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 09:45:41,857 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 09:45:41,857 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 09:45:41,858 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 09:45:41,858 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 09:45:41,858 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 09:45:41,858 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 09:45:41,859 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 09:45:41,861 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3a3dc497-a5cd-4cc7-bda9-2745d917611f/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 09:45:41,866 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 [2019-11-20 09:45:41,868 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 09:45:41,869 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 09:45:41,869 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 09:45:41,869 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 09:45:41,879 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 09:45:41,879 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 09:45:41,894 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 09:45:41,917 INFO L443 ModelExtractionUtils]: Simplification made 7 calls to the SMT solver. [2019-11-20 09:45:41,917 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_3a3dc497-a5cd-4cc7-bda9-2745d917611f/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) [2019-11-20 09:45:41,936 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 [2019-11-20 09:45:41,944 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2019-11-20 09:45:41,944 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 09:45:41,945 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 [] [2019-11-20 09:45:41,965 INFO L297 tatePredicateManager]: 3 out of 3 supporting invariants were superfluous and have been removed [2019-11-20 09:45:41,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 09:45:42,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 09:45:42,017 INFO L255 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 09:45:42,019 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 09:45:42,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 09:45:42,036 INFO L255 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 09:45:42,038 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 09:45:42,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 09:45:42,070 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 [2019-11-20 09:45:42,072 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states. Second operand 3 states. [2019-11-20 09:45:42,132 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. [2019-11-20 09:45:42,137 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 [2019-11-20 09:45:42,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-20 09:45:42,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 29 transitions. [2019-11-20 09:45:42,142 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 29 transitions. Stem has 4 letters. Loop has 2 letters. [2019-11-20 09:45:42,148 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 09:45:42,148 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 29 transitions. Stem has 6 letters. Loop has 2 letters. [2019-11-20 09:45:42,149 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 09:45:42,149 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 29 transitions. Stem has 4 letters. Loop has 4 letters. [2019-11-20 09:45:42,149 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 09:45:42,150 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 45 transitions. [2019-11-20 09:45:42,155 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-20 09:45:42,160 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 11 states and 14 transitions. [2019-11-20 09:45:42,162 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2019-11-20 09:45:42,162 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2019-11-20 09:45:42,163 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 14 transitions. [2019-11-20 09:45:42,163 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-20 09:45:42,164 INFO L688 BuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2019-11-20 09:45:42,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 14 transitions. [2019-11-20 09:45:42,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2019-11-20 09:45:42,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-11-20 09:45:42,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 14 transitions. [2019-11-20 09:45:42,193 INFO L711 BuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2019-11-20 09:45:42,193 INFO L591 BuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2019-11-20 09:45:42,194 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-20 09:45:42,194 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 14 transitions. [2019-11-20 09:45:42,197 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-20 09:45:42,197 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 09:45:42,197 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 09:45:42,198 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2019-11-20 09:45:42,198 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-20 09:45:42,199 INFO L794 eck$LassoCheckResult]: Stem: 111#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 107#L-1 havoc main_#res;havoc main_#t~nondet4, main_#t~malloc5.base, main_#t~malloc5.offset, main_#t~nondet7, main_#t~post6, main_~i~0, main_#t~ret8, main_~length1~0, main_~nondetString1~0.base, main_~nondetString1~0.offset;main_~length1~0 := main_#t~nondet4;havoc main_#t~nondet4; 108#L524 assume !(main_~length1~0 < 1); 117#L524-2 call main_#t~malloc5.base, main_#t~malloc5.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc5.base, main_#t~malloc5.offset;main_~i~0 := 0; 114#L528-3 assume !(main_~i~0 < main_~length1~0 - 1); 115#L528-4 call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1), 1);cstrlen_#in~str.base, cstrlen_#in~str.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset;havoc cstrlen_#res;havoc cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset, cstrlen_#t~mem3, cstrlen_~str.base, cstrlen_~str.offset, cstrlen_~s~0.base, cstrlen_~s~0.offset;cstrlen_~str.base, cstrlen_~str.offset := cstrlen_#in~str.base, cstrlen_#in~str.offset;havoc cstrlen_~s~0.base, cstrlen_~s~0.offset;cstrlen_~s~0.base, cstrlen_~s~0.offset := cstrlen_~str.base, cstrlen_~str.offset; 113#L518-4 [2019-11-20 09:45:42,200 INFO L796 eck$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 [2019-11-20 09:45:42,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 09:45:42,201 INFO L82 PathProgramCache]: Analyzing trace with hash 889568397, now seen corresponding path program 1 times [2019-11-20 09:45:42,201 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 09:45:42,202 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782029273] [2019-11-20 09:45:42,202 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 09:45:42,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 09:45:42,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 09:45:42,290 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 09:45:42,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 09:45:42,293 INFO L82 PathProgramCache]: Analyzing trace with hash 56764, now seen corresponding path program 1 times [2019-11-20 09:45:42,293 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 09:45:42,294 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139820805] [2019-11-20 09:45:42,297 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 09:45:42,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 09:45:42,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 09:45:42,307 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 09:45:42,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 09:45:42,308 INFO L82 PathProgramCache]: Analyzing trace with hash 1183925680, now seen corresponding path program 1 times [2019-11-20 09:45:42,308 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 09:45:42,309 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271678368] [2019-11-20 09:45:42,309 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 09:45:42,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 09:45:42,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 09:45:42,477 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271678368] [2019-11-20 09:45:42,478 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 09:45:42,478 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-20 09:45:42,479 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502100744] [2019-11-20 09:45:42,524 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 09:45:42,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-20 09:45:42,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-11-20 09:45:42,528 INFO L87 Difference]: Start difference. First operand 11 states and 14 transitions. cyclomatic complexity: 5 Second operand 7 states. [2019-11-20 09:45:42,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 09:45:42,629 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2019-11-20 09:45:42,630 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-20 09:45:42,630 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 17 transitions. [2019-11-20 09:45:42,631 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-20 09:45:42,632 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 12 states and 14 transitions. [2019-11-20 09:45:42,632 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2019-11-20 09:45:42,632 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2019-11-20 09:45:42,632 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 14 transitions. [2019-11-20 09:45:42,633 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-20 09:45:42,633 INFO L688 BuchiCegarLoop]: Abstraction has 12 states and 14 transitions. [2019-11-20 09:45:42,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 14 transitions. [2019-11-20 09:45:42,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2019-11-20 09:45:42,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-11-20 09:45:42,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2019-11-20 09:45:42,635 INFO L711 BuchiCegarLoop]: Abstraction has 11 states and 13 transitions. [2019-11-20 09:45:42,635 INFO L591 BuchiCegarLoop]: Abstraction has 11 states and 13 transitions. [2019-11-20 09:45:42,635 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-20 09:45:42,635 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 13 transitions. [2019-11-20 09:45:42,636 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-20 09:45:42,636 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 09:45:42,636 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 09:45:42,636 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 09:45:42,637 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-20 09:45:42,637 INFO L794 eck$LassoCheckResult]: Stem: 153#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 149#L-1 havoc main_#res;havoc main_#t~nondet4, main_#t~malloc5.base, main_#t~malloc5.offset, main_#t~nondet7, main_#t~post6, main_~i~0, main_#t~ret8, main_~length1~0, main_~nondetString1~0.base, main_~nondetString1~0.offset;main_~length1~0 := main_#t~nondet4;havoc main_#t~nondet4; 150#L524 assume !(main_~length1~0 < 1); 159#L524-2 call main_#t~malloc5.base, main_#t~malloc5.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc5.base, main_#t~malloc5.offset;main_~i~0 := 0; 156#L528-3 assume !!(main_~i~0 < main_~length1~0 - 1);call write~int(main_#t~nondet7, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet7; 151#L528-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 152#L528-3 assume !(main_~i~0 < main_~length1~0 - 1); 157#L528-4 call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1), 1);cstrlen_#in~str.base, cstrlen_#in~str.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset;havoc cstrlen_#res;havoc cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset, cstrlen_#t~mem3, cstrlen_~str.base, cstrlen_~str.offset, cstrlen_~s~0.base, cstrlen_~s~0.offset;cstrlen_~str.base, cstrlen_~str.offset := cstrlen_#in~str.base, cstrlen_#in~str.offset;havoc cstrlen_~s~0.base, cstrlen_~s~0.offset;cstrlen_~s~0.base, cstrlen_~s~0.offset := cstrlen_~str.base, cstrlen_~str.offset; 155#L518-4 [2019-11-20 09:45:42,637 INFO L796 eck$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 [2019-11-20 09:45:42,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 09:45:42,637 INFO L82 PathProgramCache]: Analyzing trace with hash 176793839, now seen corresponding path program 1 times [2019-11-20 09:45:42,638 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 09:45:42,638 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9307237] [2019-11-20 09:45:42,638 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 09:45:42,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 09:45:42,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 09:45:42,682 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 09:45:42,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 09:45:42,685 INFO L82 PathProgramCache]: Analyzing trace with hash 56764, now seen corresponding path program 2 times [2019-11-20 09:45:42,685 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 09:45:42,686 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979833398] [2019-11-20 09:45:42,686 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 09:45:42,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 09:45:42,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 09:45:42,710 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 09:45:42,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 09:45:42,710 INFO L82 PathProgramCache]: Analyzing trace with hash 1235379726, now seen corresponding path program 1 times [2019-11-20 09:45:42,711 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 09:45:42,711 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051889051] [2019-11-20 09:45:42,711 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 09:45:42,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 09:45:42,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 09:45:42,778 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 09:45:43,085 WARN L191 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2019-11-20 09:45:43,186 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 09:45:43,186 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 09:45:43,186 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 09:45:43,187 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 09:45:43,187 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 09:45:43,187 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 09:45:43,187 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 09:45:43,187 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 09:45:43,187 INFO L133 ssoRankerPreferences]: Filename of dumped script: openbsd_cstrlen-alloca-1.i_Iteration3_Lasso [2019-11-20 09:45:43,187 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 09:45:43,187 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 09:45:43,190 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 09:45:43,202 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 09:45:43,204 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 09:45:43,208 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 09:45:43,211 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 09:45:43,214 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 09:45:43,378 WARN L191 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 43 [2019-11-20 09:45:43,494 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 32 [2019-11-20 09:45:43,495 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 09:45:43,497 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 09:45:43,499 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 09:45:43,501 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 09:45:43,504 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 09:45:43,506 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 09:45:43,515 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 09:45:43,519 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 09:45:43,521 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 09:45:43,529 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 09:45:43,900 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 09:45:43,901 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3a3dc497-a5cd-4cc7-bda9-2745d917611f/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) [2019-11-20 09:45:43,914 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 [2019-11-20 09:45:43,916 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 09:45:43,916 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 09:45:43,916 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 09:45:43,916 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 09:45:43,917 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 09:45:43,917 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 09:45:43,917 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 09:45:43,923 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3a3dc497-a5cd-4cc7-bda9-2745d917611f/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) [2019-11-20 09:45:43,938 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 09:45:43,940 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 09:45:43,940 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 09:45:43,940 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 09:45:43,940 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 09:45:43,940 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 09:45:43,941 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 09:45:43,941 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 09:45:43,943 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3a3dc497-a5cd-4cc7-bda9-2745d917611f/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) [2019-11-20 09:45:43,961 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 [2019-11-20 09:45:43,971 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 09:45:43,971 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 09:45:43,971 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 09:45:43,971 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 09:45:43,972 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 09:45:43,972 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 09:45:43,972 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 09:45:43,976 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3a3dc497-a5cd-4cc7-bda9-2745d917611f/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 [2019-11-20 09:45:43,986 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 [2019-11-20 09:45:43,987 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 09:45:43,988 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 09:45:43,988 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 09:45:43,988 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 09:45:43,988 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 09:45:43,989 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 09:45:43,989 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 09:45:43,990 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3a3dc497-a5cd-4cc7-bda9-2745d917611f/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 [2019-11-20 09:45:43,997 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 [2019-11-20 09:45:43,999 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 09:45:43,999 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 09:45:43,999 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 09:45:43,999 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 09:45:44,003 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 09:45:44,003 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 09:45:44,007 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3a3dc497-a5cd-4cc7-bda9-2745d917611f/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) [2019-11-20 09:45:44,016 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 [2019-11-20 09:45:44,018 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 09:45:44,019 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 09:45:44,019 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 09:45:44,019 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 09:45:44,030 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 09:45:44,030 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 09:45:44,047 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 09:45:44,204 INFO L443 ModelExtractionUtils]: Simplification made 14 calls to the SMT solver. [2019-11-20 09:45:44,204 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_3a3dc497-a5cd-4cc7-bda9-2745d917611f/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) [2019-11-20 09:45:44,221 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 [2019-11-20 09:45:44,225 INFO L438 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2019-11-20 09:45:44,226 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 09:45:44,226 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] [2019-11-20 09:45:44,249 INFO L297 tatePredicateManager]: 4 out of 6 supporting invariants were superfluous and have been removed [2019-11-20 09:45:44,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 09:45:44,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 09:45:44,317 INFO L255 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 14 conjunts are in the unsatisfiable core [2019-11-20 09:45:44,318 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 09:45:44,348 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 [2019-11-20 09:45:44,349 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 09:45:44,361 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 09:45:44,361 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 09:45:44,362 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:10 [2019-11-20 09:45:44,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 09:45:44,436 WARN L253 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-20 09:45:44,437 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 09:45:44,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 09:45:44,471 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 [2019-11-20 09:45:44,471 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 13 transitions. cyclomatic complexity: 4 Second operand 6 states. [2019-11-20 09:45:44,624 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. [2019-11-20 09:45:44,625 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 [2019-11-20 09:45:44,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-11-20 09:45:44,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 18 transitions. [2019-11-20 09:45:44,626 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 18 transitions. Stem has 8 letters. Loop has 3 letters. [2019-11-20 09:45:44,626 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 09:45:44,626 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 18 transitions. Stem has 11 letters. Loop has 3 letters. [2019-11-20 09:45:44,626 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 09:45:44,626 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 18 transitions. Stem has 8 letters. Loop has 6 letters. [2019-11-20 09:45:44,626 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 09:45:44,626 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 27 transitions. [2019-11-20 09:45:44,627 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-20 09:45:44,628 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 16 states and 18 transitions. [2019-11-20 09:45:44,628 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2019-11-20 09:45:44,628 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2019-11-20 09:45:44,629 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 18 transitions. [2019-11-20 09:45:44,629 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-20 09:45:44,629 INFO L688 BuchiCegarLoop]: Abstraction has 16 states and 18 transitions. [2019-11-20 09:45:44,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states and 18 transitions. [2019-11-20 09:45:44,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 13. [2019-11-20 09:45:44,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-11-20 09:45:44,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2019-11-20 09:45:44,631 INFO L711 BuchiCegarLoop]: Abstraction has 13 states and 15 transitions. [2019-11-20 09:45:44,631 INFO L591 BuchiCegarLoop]: Abstraction has 13 states and 15 transitions. [2019-11-20 09:45:44,631 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-20 09:45:44,631 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 15 transitions. [2019-11-20 09:45:44,631 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-20 09:45:44,632 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 09:45:44,632 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 09:45:44,632 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1] [2019-11-20 09:45:44,632 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-20 09:45:44,632 INFO L794 eck$LassoCheckResult]: Stem: 285#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 281#L-1 havoc main_#res;havoc main_#t~nondet4, main_#t~malloc5.base, main_#t~malloc5.offset, main_#t~nondet7, main_#t~post6, main_~i~0, main_#t~ret8, main_~length1~0, main_~nondetString1~0.base, main_~nondetString1~0.offset;main_~length1~0 := main_#t~nondet4;havoc main_#t~nondet4; 282#L524 assume !(main_~length1~0 < 1); 292#L524-2 call main_#t~malloc5.base, main_#t~malloc5.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc5.base, main_#t~malloc5.offset;main_~i~0 := 0; 288#L528-3 assume !!(main_~i~0 < main_~length1~0 - 1);call write~int(main_#t~nondet7, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet7; 283#L528-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 284#L528-3 assume !!(main_~i~0 < main_~length1~0 - 1);call write~int(main_#t~nondet7, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet7; 289#L528-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 293#L528-3 assume !(main_~i~0 < main_~length1~0 - 1); 291#L528-4 call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1), 1);cstrlen_#in~str.base, cstrlen_#in~str.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset;havoc cstrlen_#res;havoc cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset, cstrlen_#t~mem3, cstrlen_~str.base, cstrlen_~str.offset, cstrlen_~s~0.base, cstrlen_~s~0.offset;cstrlen_~str.base, cstrlen_~str.offset := cstrlen_#in~str.base, cstrlen_#in~str.offset;havoc cstrlen_~s~0.base, cstrlen_~s~0.offset;cstrlen_~s~0.base, cstrlen_~s~0.offset := cstrlen_~str.base, cstrlen_~str.offset; 287#L518-4 [2019-11-20 09:45:44,633 INFO L796 eck$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 [2019-11-20 09:45:44,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 09:45:44,633 INFO L82 PathProgramCache]: Analyzing trace with hash -1899756335, now seen corresponding path program 2 times [2019-11-20 09:45:44,633 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 09:45:44,633 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550684265] [2019-11-20 09:45:44,633 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 09:45:44,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 09:45:44,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 09:45:44,659 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 09:45:44,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 09:45:44,660 INFO L82 PathProgramCache]: Analyzing trace with hash 56764, now seen corresponding path program 3 times [2019-11-20 09:45:44,660 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 09:45:44,660 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705903591] [2019-11-20 09:45:44,660 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 09:45:44,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 09:45:44,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 09:45:44,667 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 09:45:44,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 09:45:44,668 INFO L82 PathProgramCache]: Analyzing trace with hash -856889620, now seen corresponding path program 2 times [2019-11-20 09:45:44,668 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 09:45:44,669 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128468746] [2019-11-20 09:45:44,669 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 09:45:44,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 09:45:44,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 09:45:44,698 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 09:45:45,052 WARN L191 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 79 [2019-11-20 09:45:45,140 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 09:45:45,140 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 09:45:45,140 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 09:45:45,140 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 09:45:45,140 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 09:45:45,140 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 09:45:45,140 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 09:45:45,140 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 09:45:45,141 INFO L133 ssoRankerPreferences]: Filename of dumped script: openbsd_cstrlen-alloca-1.i_Iteration4_Lasso [2019-11-20 09:45:45,141 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 09:45:45,141 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 09:45:45,144 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 09:45:45,152 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 09:45:45,154 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 09:45:45,157 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 09:45:45,160 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 09:45:45,165 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 09:45:45,169 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 09:45:45,175 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 09:45:45,178 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 09:45:45,183 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 09:45:45,187 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 09:45:45,189 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 09:45:45,317 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 42 [2019-11-20 09:45:45,375 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 09:45:45,378 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 09:45:45,380 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 09:45:45,655 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 09:45:45,655 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3a3dc497-a5cd-4cc7-bda9-2745d917611f/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 [2019-11-20 09:45:45,660 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 [2019-11-20 09:45:45,662 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 09:45:45,662 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 09:45:45,662 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 09:45:45,662 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 09:45:45,662 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 09:45:45,662 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 09:45:45,662 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 09:45:45,663 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3a3dc497-a5cd-4cc7-bda9-2745d917611f/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 [2019-11-20 09:45:45,668 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 [2019-11-20 09:45:45,669 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 09:45:45,669 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 09:45:45,669 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 09:45:45,669 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 09:45:45,669 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 09:45:45,670 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 09:45:45,670 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 09:45:45,671 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3a3dc497-a5cd-4cc7-bda9-2745d917611f/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 [2019-11-20 09:45:45,680 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 [2019-11-20 09:45:45,682 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 09:45:45,682 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 09:45:45,682 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 09:45:45,682 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 09:45:45,684 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 09:45:45,684 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 09:45:45,691 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3a3dc497-a5cd-4cc7-bda9-2745d917611f/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 [2019-11-20 09:45:45,712 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 [2019-11-20 09:45:45,715 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 09:45:45,715 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 09:45:45,715 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 09:45:45,715 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 09:45:45,715 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 09:45:45,716 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 09:45:45,716 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 09:45:45,718 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3a3dc497-a5cd-4cc7-bda9-2745d917611f/bin/uautomizer/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 09:45:45,737 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 [2019-11-20 09:45:45,738 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 09:45:45,739 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 09:45:45,739 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 09:45:45,739 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 09:45:45,743 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 09:45:45,743 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 09:45:45,746 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3a3dc497-a5cd-4cc7-bda9-2745d917611f/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) [2019-11-20 09:45:45,757 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 [2019-11-20 09:45:45,759 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 09:45:45,759 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 09:45:45,759 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 09:45:45,759 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 09:45:45,759 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 09:45:45,760 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 09:45:45,760 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 09:45:45,762 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3a3dc497-a5cd-4cc7-bda9-2745d917611f/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) [2019-11-20 09:45:45,767 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 [2019-11-20 09:45:45,769 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 09:45:45,769 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 09:45:45,769 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 09:45:45,769 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 09:45:45,777 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 09:45:45,777 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 09:45:45,781 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3a3dc497-a5cd-4cc7-bda9-2745d917611f/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) [2019-11-20 09:45:45,788 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 [2019-11-20 09:45:45,789 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 09:45:45,790 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 09:45:45,790 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 09:45:45,790 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 09:45:45,790 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 09:45:45,791 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 09:45:45,791 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 09:45:45,793 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3a3dc497-a5cd-4cc7-bda9-2745d917611f/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) [2019-11-20 09:45:45,799 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 [2019-11-20 09:45:45,803 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 09:45:45,804 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 09:45:45,804 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 09:45:45,804 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 09:45:45,804 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 09:45:45,805 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 09:45:45,805 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 09:45:45,807 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3a3dc497-a5cd-4cc7-bda9-2745d917611f/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) [2019-11-20 09:45:45,813 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 [2019-11-20 09:45:45,815 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 09:45:45,815 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 09:45:45,816 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 09:45:45,816 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 09:45:45,816 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 09:45:45,816 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 09:45:45,817 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 09:45:45,818 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3a3dc497-a5cd-4cc7-bda9-2745d917611f/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) [2019-11-20 09:45:45,829 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 [2019-11-20 09:45:45,831 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 09:45:45,831 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 09:45:45,831 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 09:45:45,831 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 09:45:45,831 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 09:45:45,832 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 09:45:45,832 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 09:45:45,833 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3a3dc497-a5cd-4cc7-bda9-2745d917611f/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 [2019-11-20 09:45:45,838 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 [2019-11-20 09:45:45,839 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 09:45:45,839 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 09:45:45,839 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 09:45:45,839 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 09:45:45,844 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 09:45:45,844 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 09:45:45,849 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3a3dc497-a5cd-4cc7-bda9-2745d917611f/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 [2019-11-20 09:45:45,854 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 [2019-11-20 09:45:45,855 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 09:45:45,856 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 09:45:45,856 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 09:45:45,856 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 09:45:45,865 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 09:45:45,866 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 09:45:45,875 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3a3dc497-a5cd-4cc7-bda9-2745d917611f/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 [2019-11-20 09:45:45,883 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 09:45:45,884 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 09:45:45,885 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 09:45:45,885 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 09:45:45,885 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 09:45:45,893 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 09:45:45,893 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 09:45:45,911 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 09:45:45,958 INFO L443 ModelExtractionUtils]: Simplification made 17 calls to the SMT solver. [2019-11-20 09:45:45,959 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_3a3dc497-a5cd-4cc7-bda9-2745d917611f/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) [2019-11-20 09:45:45,967 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 [2019-11-20 09:45:45,970 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2019-11-20 09:45:45,970 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 09:45:45,970 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 [] [2019-11-20 09:45:45,980 INFO L297 tatePredicateManager]: 2 out of 3 supporting invariants were superfluous and have been removed [2019-11-20 09:45:45,983 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2019-11-20 09:45:46,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 09:45:46,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [MP z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Exception during sending of exit command (exit): Broken pipe [2019-11-20 09:45:46,036 INFO L255 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-20 09:45:46,040 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 09:45:46,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 09:45:46,060 WARN L253 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-20 09:45:46,060 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 09:45:46,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 09:45:46,076 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 [2019-11-20 09:45:46,077 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 15 transitions. cyclomatic complexity: 4 Second operand 4 states. [2019-11-20 09:45:46,109 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. [2019-11-20 09:45:46,109 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 [2019-11-20 09:45:46,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-20 09:45:46,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2019-11-20 09:45:46,110 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 10 letters. Loop has 3 letters. [2019-11-20 09:45:46,110 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 09:45:46,110 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 13 letters. Loop has 3 letters. [2019-11-20 09:45:46,110 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 09:45:46,111 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 10 letters. Loop has 6 letters. [2019-11-20 09:45:46,111 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 09:45:46,111 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 19 transitions. [2019-11-20 09:45:46,112 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-20 09:45:46,112 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 0 states and 0 transitions. [2019-11-20 09:45:46,112 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-20 09:45:46,112 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-20 09:45:46,112 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-20 09:45:46,112 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-20 09:45:46,112 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 09:45:46,113 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 09:45:46,113 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 09:45:46,113 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-11-20 09:45:46,113 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-20 09:45:46,113 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-20 09:45:46,113 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-20 09:45:46,118 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.11 09:45:46 BoogieIcfgContainer [2019-11-20 09:45:46,119 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-20 09:45:46,119 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 09:45:46,119 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 09:45:46,120 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 09:45:46,120 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:45:40" (3/4) ... [2019-11-20 09:45:46,123 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-20 09:45:46,123 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 09:45:46,125 INFO L168 Benchmark]: Toolchain (without parser) took 6585.58 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 291.0 MB). Free memory was 942.0 MB in the beginning and 1.3 GB in the end (delta: -323.9 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 09:45:46,125 INFO L168 Benchmark]: CDTParser took 0.18 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. [2019-11-20 09:45:46,126 INFO L168 Benchmark]: CACSL2BoogieTranslator took 629.31 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 155.2 MB). Free memory was 942.0 MB in the beginning and 1.1 GB in the end (delta: -189.9 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. [2019-11-20 09:45:46,126 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.23 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. [2019-11-20 09:45:46,126 INFO L168 Benchmark]: Boogie Preprocessor took 42.38 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. [2019-11-20 09:45:46,127 INFO L168 Benchmark]: RCFGBuilder took 372.88 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: 20.9 MB). Peak memory consumption was 20.9 MB. Max. memory is 11.5 GB. [2019-11-20 09:45:46,127 INFO L168 Benchmark]: BuchiAutomizer took 5487.46 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 135.8 MB). Free memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: -156.9 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 09:45:46,128 INFO L168 Benchmark]: Witness Printer took 4.47 ms. Allocated memory is still 1.3 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 11.5 GB. [2019-11-20 09:45:46,137 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 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 629.31 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 155.2 MB). Free memory was 942.0 MB in the beginning and 1.1 GB in the end (delta: -189.9 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 45.23 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 42.38 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 372.88 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: 20.9 MB). Peak memory consumption was 20.9 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 5487.46 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 135.8 MB). Free memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: -156.9 MB). There was no memory consumed. Max. memory is 11.5 GB. * Witness Printer took 4.47 ms. Allocated memory is still 1.3 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #length * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 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 5.4s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 4.5s. Construction of modules took 0.1s. Büchi inclusion checks took 0.6s. 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, 0.1s 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: 36ms 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...