./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/loops/invert_string-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_9d635873-5e57-4429-999a-2f20553dc1a3/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_9d635873-5e57-4429-999a-2f20553dc1a3/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_9d635873-5e57-4429-999a-2f20553dc1a3/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_9d635873-5e57-4429-999a-2f20553dc1a3/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/loops/invert_string-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_9d635873-5e57-4429-999a-2f20553dc1a3/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_9d635873-5e57-4429-999a-2f20553dc1a3/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 4335483d0b28de4d854f33f949d3555a767d1bde ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 18:53:04,273 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 18:53:04,275 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 18:53:04,283 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 18:53:04,284 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 18:53:04,284 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 18:53:04,285 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 18:53:04,287 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 18:53:04,289 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 18:53:04,290 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 18:53:04,290 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 18:53:04,292 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 18:53:04,292 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 18:53:04,293 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 18:53:04,294 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 18:53:04,295 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 18:53:04,295 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 18:53:04,296 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 18:53:04,298 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 18:53:04,300 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 18:53:04,301 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 18:53:04,302 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 18:53:04,303 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 18:53:04,304 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 18:53:04,306 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 18:53:04,306 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 18:53:04,306 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 18:53:04,307 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 18:53:04,307 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 18:53:04,308 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 18:53:04,308 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 18:53:04,309 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 18:53:04,309 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 18:53:04,310 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 18:53:04,311 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 18:53:04,311 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 18:53:04,312 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 18:53:04,312 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 18:53:04,312 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 18:53:04,313 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 18:53:04,313 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 18:53:04,314 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_9d635873-5e57-4429-999a-2f20553dc1a3/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2019-12-07 18:53:04,328 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 18:53:04,328 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 18:53:04,329 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 18:53:04,329 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 18:53:04,329 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 18:53:04,329 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-12-07 18:53:04,330 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-12-07 18:53:04,330 INFO L138 SettingsManager]: * Use old map elimination=false [2019-12-07 18:53:04,330 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-12-07 18:53:04,330 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-12-07 18:53:04,330 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-12-07 18:53:04,330 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 18:53:04,331 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 18:53:04,331 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 18:53:04,331 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 18:53:04,331 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 18:53:04,331 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 18:53:04,331 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-12-07 18:53:04,332 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-12-07 18:53:04,332 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-12-07 18:53:04,332 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 18:53:04,332 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 18:53:04,332 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-12-07 18:53:04,332 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 18:53:04,333 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-12-07 18:53:04,333 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 18:53:04,333 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 18:53:04,333 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-12-07 18:53:04,333 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 18:53:04,333 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 18:53:04,333 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 18:53:04,334 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-12-07 18:53:04,334 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-12-07 18:53:04,334 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_9d635873-5e57-4429-999a-2f20553dc1a3/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 -> 4335483d0b28de4d854f33f949d3555a767d1bde [2019-12-07 18:53:04,440 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 18:53:04,449 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 18:53:04,451 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 18:53:04,453 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 18:53:04,453 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 18:53:04,454 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_9d635873-5e57-4429-999a-2f20553dc1a3/bin/uautomizer/../../sv-benchmarks/c/loops/invert_string-1.c [2019-12-07 18:53:04,498 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9d635873-5e57-4429-999a-2f20553dc1a3/bin/uautomizer/data/f63f11b24/c5f0cec0442e4159851231769fdfc504/FLAG3527f5243 [2019-12-07 18:53:04,922 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 18:53:04,922 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_9d635873-5e57-4429-999a-2f20553dc1a3/sv-benchmarks/c/loops/invert_string-1.c [2019-12-07 18:53:04,926 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9d635873-5e57-4429-999a-2f20553dc1a3/bin/uautomizer/data/f63f11b24/c5f0cec0442e4159851231769fdfc504/FLAG3527f5243 [2019-12-07 18:53:04,936 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_9d635873-5e57-4429-999a-2f20553dc1a3/bin/uautomizer/data/f63f11b24/c5f0cec0442e4159851231769fdfc504 [2019-12-07 18:53:04,938 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 18:53:04,939 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 18:53:04,940 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 18:53:04,940 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 18:53:04,942 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 18:53:04,942 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 06:53:04" (1/1) ... [2019-12-07 18:53:04,944 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c8c33a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:53:04, skipping insertion in model container [2019-12-07 18:53:04,944 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 06:53:04" (1/1) ... [2019-12-07 18:53:04,948 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 18:53:04,960 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 18:53:05,081 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 18:53:05,084 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 18:53:05,134 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 18:53:05,146 INFO L208 MainTranslator]: Completed translation [2019-12-07 18:53:05,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:53:05 WrapperNode [2019-12-07 18:53:05,146 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 18:53:05,147 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 18:53:05,147 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 18:53:05,147 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 18:53:05,152 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:53:05" (1/1) ... [2019-12-07 18:53:05,158 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:53:05" (1/1) ... [2019-12-07 18:53:05,171 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 18:53:05,171 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 18:53:05,171 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 18:53:05,171 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 18:53:05,178 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:53:05" (1/1) ... [2019-12-07 18:53:05,178 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:53:05" (1/1) ... [2019-12-07 18:53:05,179 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:53:05" (1/1) ... [2019-12-07 18:53:05,179 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:53:05" (1/1) ... [2019-12-07 18:53:05,183 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:53:05" (1/1) ... [2019-12-07 18:53:05,186 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:53:05" (1/1) ... [2019-12-07 18:53:05,187 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:53:05" (1/1) ... [2019-12-07 18:53:05,188 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 18:53:05,189 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 18:53:05,189 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 18:53:05,189 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 18:53:05,189 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:53:05" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d635873-5e57-4429-999a-2f20553dc1a3/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:53:05,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 18:53:05,232 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 18:53:05,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 18:53:05,232 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-07 18:53:05,232 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 18:53:05,232 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 18:53:05,366 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 18:53:05,366 INFO L287 CfgBuilder]: Removed 9 assume(true) statements. [2019-12-07 18:53:05,367 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:53:05 BoogieIcfgContainer [2019-12-07 18:53:05,367 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 18:53:05,367 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-12-07 18:53:05,367 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-12-07 18:53:05,369 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-12-07 18:53:05,370 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 18:53:05,370 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 07.12 06:53:04" (1/3) ... [2019-12-07 18:53:05,371 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4f2d17d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 06:53:05, skipping insertion in model container [2019-12-07 18:53:05,371 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 18:53:05,371 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:53:05" (2/3) ... [2019-12-07 18:53:05,371 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4f2d17d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 06:53:05, skipping insertion in model container [2019-12-07 18:53:05,371 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 18:53:05,371 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:53:05" (3/3) ... [2019-12-07 18:53:05,372 INFO L371 chiAutomizerObserver]: Analyzing ICFG invert_string-1.c [2019-12-07 18:53:05,401 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-12-07 18:53:05,401 INFO L357 BuchiCegarLoop]: Hoare is false [2019-12-07 18:53:05,401 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-12-07 18:53:05,401 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 18:53:05,401 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 18:53:05,401 INFO L361 BuchiCegarLoop]: Difference is false [2019-12-07 18:53:05,402 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 18:53:05,402 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-12-07 18:53:05,410 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states. [2019-12-07 18:53:05,423 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2019-12-07 18:53:05,423 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 18:53:05,424 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 18:53:05,428 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-12-07 18:53:05,428 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-12-07 18:53:05,428 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-12-07 18:53:05,428 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states. [2019-12-07 18:53:05,429 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2019-12-07 18:53:05,429 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 18:53:05,429 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 18:53:05,430 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-12-07 18:53:05,430 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-12-07 18:53:05,435 INFO L794 eck$LassoCheckResult]: Stem: 12#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 10#L-1true havoc main_#res;havoc main_#t~nondet1, main_#t~nondet3, main_#t~post2, main_#t~mem5, main_#t~post6, main_#t~post4, main_#t~mem8, main_#t~mem9, main_#t~post10, main_#t~post7, main_~MAX~0, main_~#str1~0.base, main_~#str1~0.offset, main_~#str2~0.base, main_~#str2~0.offset, main_~cont~0, main_~i~0, main_~j~0;main_~MAX~0 := (if main_#t~nondet1 % 4294967296 % 4294967296 <= 2147483647 then main_#t~nondet1 % 4294967296 % 4294967296 else main_#t~nondet1 % 4294967296 % 4294967296 - 4294967296);havoc main_#t~nondet1;assume 0 != (if main_~MAX~0 > 0 then 1 else 0);call main_~#str1~0.base, main_~#str1~0.offset := #Ultimate.allocOnStack(main_~MAX~0);call main_~#str2~0.base, main_~#str2~0.offset := #Ultimate.allocOnStack(main_~MAX~0);havoc main_~cont~0;havoc main_~i~0;havoc main_~j~0;main_~cont~0 := 0;main_~i~0 := 0; 6#L20-3true [2019-12-07 18:53:05,435 INFO L796 eck$LassoCheckResult]: Loop: 6#L20-3true assume !!(main_~i~0 < main_~MAX~0);call write~int(main_#t~nondet3, main_~#str1~0.base, main_~#str1~0.offset + main_~i~0, 1);havoc main_#t~nondet3; 7#L20-2true main_#t~post2 := main_~i~0;main_~i~0 := 1 + main_#t~post2;havoc main_#t~post2; 6#L20-3true [2019-12-07 18:53:05,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:53:05,439 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2019-12-07 18:53:05,445 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:53:05,446 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89739997] [2019-12-07 18:53:05,446 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:53:05,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:53:05,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:53:05,538 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:53:05,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:53:05,538 INFO L82 PathProgramCache]: Analyzing trace with hash 1283, now seen corresponding path program 1 times [2019-12-07 18:53:05,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:53:05,539 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734749129] [2019-12-07 18:53:05,539 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:53:05,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:53:05,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:53:05,549 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:53:05,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:53:05,550 INFO L82 PathProgramCache]: Analyzing trace with hash 925765, now seen corresponding path program 1 times [2019-12-07 18:53:05,550 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:53:05,550 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377127675] [2019-12-07 18:53:05,550 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:53:05,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:53:05,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:53:05,584 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:53:05,823 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 18:53:05,824 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 18:53:05,824 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 18:53:05,824 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 18:53:05,824 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 18:53:05,824 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:53:05,824 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 18:53:05,824 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 18:53:05,824 INFO L133 ssoRankerPreferences]: Filename of dumped script: invert_string-1.c_Iteration1_Lasso [2019-12-07 18:53:05,824 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 18:53:05,824 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 18:53:05,839 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:53:05,842 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:53:05,845 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:53:05,847 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:53:05,849 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:53:05,850 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:53:05,851 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:53:05,853 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:53:05,855 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:53:05,856 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:53:05,858 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:53:05,902 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:53:05,903 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:53:05,905 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:53:05,906 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:53:05,907 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:53:06,057 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 18:53:06,061 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d635873-5e57-4429-999a-2f20553dc1a3/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:53:06,065 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:53:06,067 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:53:06,067 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 18:53:06,067 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:53:06,067 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:53:06,067 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:53:06,069 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 18:53:06,069 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 18:53:06,071 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d635873-5e57-4429-999a-2f20553dc1a3/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:53:06,075 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:53:06,076 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:53:06,076 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 18:53:06,076 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:53:06,077 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:53:06,077 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:53:06,077 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 18:53:06,077 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 18:53:06,079 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d635873-5e57-4429-999a-2f20553dc1a3/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:53:06,082 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:53:06,084 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:53:06,084 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:53:06,084 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:53:06,084 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:53:06,086 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 18:53:06,086 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 18:53:06,089 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d635873-5e57-4429-999a-2f20553dc1a3/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:53:06,093 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:53:06,094 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:53:06,094 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 18:53:06,094 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:53:06,094 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:53:06,095 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:53:06,095 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 18:53:06,095 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 18:53:06,096 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d635873-5e57-4429-999a-2f20553dc1a3/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:53:06,100 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:53:06,101 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:53:06,102 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 18:53:06,102 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:53:06,102 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:53:06,102 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:53:06,102 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 18:53:06,102 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 18:53:06,103 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d635873-5e57-4429-999a-2f20553dc1a3/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:53:06,107 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:53:06,108 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:53:06,108 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 18:53:06,108 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:53:06,108 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:53:06,109 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:53:06,109 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 18:53:06,109 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 18:53:06,110 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d635873-5e57-4429-999a-2f20553dc1a3/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:53:06,114 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:53:06,115 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:53:06,115 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:53:06,115 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:53:06,115 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:53:06,118 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 18:53:06,118 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 18:53:06,121 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d635873-5e57-4429-999a-2f20553dc1a3/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:53:06,126 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:53:06,127 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:53:06,128 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 18:53:06,128 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:53:06,128 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:53:06,128 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:53:06,129 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 18:53:06,129 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 18:53:06,130 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d635873-5e57-4429-999a-2f20553dc1a3/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:53:06,135 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:53:06,136 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:53:06,136 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 18:53:06,136 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:53:06,136 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:53:06,137 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:53:06,137 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 18:53:06,137 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 18:53:06,139 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d635873-5e57-4429-999a-2f20553dc1a3/bin/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:53:06,144 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:53:06,145 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:53:06,146 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:53:06,146 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:53:06,146 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:53:06,148 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 18:53:06,148 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 18:53:06,152 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d635873-5e57-4429-999a-2f20553dc1a3/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:53:06,156 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:53:06,157 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:53:06,158 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:53:06,158 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:53:06,158 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:53:06,161 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 18:53:06,161 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 18:53:06,165 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d635873-5e57-4429-999a-2f20553dc1a3/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:53:06,169 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:53:06,171 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:53:06,171 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 18:53:06,171 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:53:06,171 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:53:06,171 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:53:06,172 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 18:53:06,172 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 18:53:06,173 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d635873-5e57-4429-999a-2f20553dc1a3/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:53:06,177 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:53:06,179 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:53:06,179 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:53:06,179 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:53:06,179 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:53:06,184 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 18:53:06,184 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 18:53:06,193 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 18:53:06,210 INFO L443 ModelExtractionUtils]: Simplification made 6 calls to the SMT solver. [2019-12-07 18:53:06,210 INFO L444 ModelExtractionUtils]: 5 out of 19 variables were initially zero. Simplification set additionally 11 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d635873-5e57-4429-999a-2f20553dc1a3/bin/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:53:06,215 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 18:53:06,217 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2019-12-07 18:53:06,217 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 18:53:06,218 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~MAX~0) = -1*ULTIMATE.start_main_~i~0 + 1*ULTIMATE.start_main_~MAX~0 Supporting invariants [] [2019-12-07 18:53:06,228 INFO L297 tatePredicateManager]: 3 out of 3 supporting invariants were superfluous and have been removed [2019-12-07 18:53:06,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:53:06,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:53:06,263 INFO L264 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 18:53:06,264 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:53:06,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:53:06,276 INFO L264 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 18:53:06,277 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:53:06,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:53:06,302 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-12-07 18:53:06,303 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states. Second operand 3 states. [2019-12-07 18:53:06,348 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states.. Second operand 3 states. Result 33 states and 47 transitions. Complement of second has 8 states. [2019-12-07 18:53:06,349 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-12-07 18:53:06,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 18:53:06,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 23 transitions. [2019-12-07 18:53:06,351 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 2 letters. Loop has 2 letters. [2019-12-07 18:53:06,352 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:53:06,352 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 4 letters. Loop has 2 letters. [2019-12-07 18:53:06,352 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:53:06,352 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 2 letters. Loop has 4 letters. [2019-12-07 18:53:06,352 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:53:06,353 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 33 states and 47 transitions. [2019-12-07 18:53:06,355 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2019-12-07 18:53:06,358 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 33 states to 14 states and 19 transitions. [2019-12-07 18:53:06,359 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2019-12-07 18:53:06,359 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2019-12-07 18:53:06,360 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 19 transitions. [2019-12-07 18:53:06,360 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 18:53:06,360 INFO L688 BuchiCegarLoop]: Abstraction has 14 states and 19 transitions. [2019-12-07 18:53:06,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 19 transitions. [2019-12-07 18:53:06,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-12-07 18:53:06,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-12-07 18:53:06,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 19 transitions. [2019-12-07 18:53:06,380 INFO L711 BuchiCegarLoop]: Abstraction has 14 states and 19 transitions. [2019-12-07 18:53:06,380 INFO L591 BuchiCegarLoop]: Abstraction has 14 states and 19 transitions. [2019-12-07 18:53:06,380 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-12-07 18:53:06,380 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 19 transitions. [2019-12-07 18:53:06,380 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2019-12-07 18:53:06,381 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 18:53:06,381 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 18:53:06,381 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-12-07 18:53:06,381 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-12-07 18:53:06,381 INFO L794 eck$LassoCheckResult]: Stem: 113#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 112#L-1 havoc main_#res;havoc main_#t~nondet1, main_#t~nondet3, main_#t~post2, main_#t~mem5, main_#t~post6, main_#t~post4, main_#t~mem8, main_#t~mem9, main_#t~post10, main_#t~post7, main_~MAX~0, main_~#str1~0.base, main_~#str1~0.offset, main_~#str2~0.base, main_~#str2~0.offset, main_~cont~0, main_~i~0, main_~j~0;main_~MAX~0 := (if main_#t~nondet1 % 4294967296 % 4294967296 <= 2147483647 then main_#t~nondet1 % 4294967296 % 4294967296 else main_#t~nondet1 % 4294967296 % 4294967296 - 4294967296);havoc main_#t~nondet1;assume 0 != (if main_~MAX~0 > 0 then 1 else 0);call main_~#str1~0.base, main_~#str1~0.offset := #Ultimate.allocOnStack(main_~MAX~0);call main_~#str2~0.base, main_~#str2~0.offset := #Ultimate.allocOnStack(main_~MAX~0);havoc main_~cont~0;havoc main_~i~0;havoc main_~j~0;main_~cont~0 := 0;main_~i~0 := 0; 107#L20-3 assume !(main_~i~0 < main_~MAX~0); 105#L20-4 call write~int(0, main_~#str1~0.base, main_~#str1~0.offset + (main_~MAX~0 - 1), 1);main_~j~0 := 0;main_~i~0 := main_~MAX~0 - 1; 106#L27-3 [2019-12-07 18:53:06,381 INFO L796 eck$LassoCheckResult]: Loop: 106#L27-3 assume !!(main_~i~0 >= 0);call main_#t~mem5 := read~int(main_~#str1~0.base, main_~#str1~0.offset, 1);call write~int(main_#t~mem5, main_~#str2~0.base, main_~#str2~0.offset + main_~j~0, 1);havoc main_#t~mem5;main_#t~post6 := main_~j~0;main_~j~0 := 1 + main_#t~post6;havoc main_#t~post6; 115#L27-2 main_#t~post4 := main_~i~0;main_~i~0 := main_#t~post4 - 1;havoc main_#t~post4; 106#L27-3 [2019-12-07 18:53:06,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:53:06,382 INFO L82 PathProgramCache]: Analyzing trace with hash 925707, now seen corresponding path program 1 times [2019-12-07 18:53:06,382 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:53:06,382 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056292276] [2019-12-07 18:53:06,382 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:53:06,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:53:06,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:53:06,417 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056292276] [2019-12-07 18:53:06,418 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:53:06,418 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 18:53:06,418 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300772141] [2019-12-07 18:53:06,420 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-12-07 18:53:06,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:53:06,421 INFO L82 PathProgramCache]: Analyzing trace with hash 1731, now seen corresponding path program 1 times [2019-12-07 18:53:06,421 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:53:06,421 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707048831] [2019-12-07 18:53:06,421 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:53:06,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:53:06,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:53:06,430 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:53:06,467 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:53:06,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 18:53:06,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 18:53:06,470 INFO L87 Difference]: Start difference. First operand 14 states and 19 transitions. cyclomatic complexity: 8 Second operand 3 states. [2019-12-07 18:53:06,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:53:06,487 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2019-12-07 18:53:06,487 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 18:53:06,488 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 17 transitions. [2019-12-07 18:53:06,488 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2019-12-07 18:53:06,489 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 14 states and 16 transitions. [2019-12-07 18:53:06,489 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2019-12-07 18:53:06,489 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2019-12-07 18:53:06,489 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 16 transitions. [2019-12-07 18:53:06,489 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 18:53:06,489 INFO L688 BuchiCegarLoop]: Abstraction has 14 states and 16 transitions. [2019-12-07 18:53:06,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 16 transitions. [2019-12-07 18:53:06,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2019-12-07 18:53:06,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-12-07 18:53:06,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2019-12-07 18:53:06,490 INFO L711 BuchiCegarLoop]: Abstraction has 13 states and 15 transitions. [2019-12-07 18:53:06,490 INFO L591 BuchiCegarLoop]: Abstraction has 13 states and 15 transitions. [2019-12-07 18:53:06,490 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-12-07 18:53:06,490 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 15 transitions. [2019-12-07 18:53:06,491 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2019-12-07 18:53:06,491 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 18:53:06,491 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 18:53:06,491 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2019-12-07 18:53:06,491 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-12-07 18:53:06,491 INFO L794 eck$LassoCheckResult]: Stem: 143#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 139#L-1 havoc main_#res;havoc main_#t~nondet1, main_#t~nondet3, main_#t~post2, main_#t~mem5, main_#t~post6, main_#t~post4, main_#t~mem8, main_#t~mem9, main_#t~post10, main_#t~post7, main_~MAX~0, main_~#str1~0.base, main_~#str1~0.offset, main_~#str2~0.base, main_~#str2~0.offset, main_~cont~0, main_~i~0, main_~j~0;main_~MAX~0 := (if main_#t~nondet1 % 4294967296 % 4294967296 <= 2147483647 then main_#t~nondet1 % 4294967296 % 4294967296 else main_#t~nondet1 % 4294967296 % 4294967296 - 4294967296);havoc main_#t~nondet1;assume 0 != (if main_~MAX~0 > 0 then 1 else 0);call main_~#str1~0.base, main_~#str1~0.offset := #Ultimate.allocOnStack(main_~MAX~0);call main_~#str2~0.base, main_~#str2~0.offset := #Ultimate.allocOnStack(main_~MAX~0);havoc main_~cont~0;havoc main_~i~0;havoc main_~j~0;main_~cont~0 := 0;main_~i~0 := 0; 140#L20-3 assume !!(main_~i~0 < main_~MAX~0);call write~int(main_#t~nondet3, main_~#str1~0.base, main_~#str1~0.offset + main_~i~0, 1);havoc main_#t~nondet3; 146#L20-2 main_#t~post2 := main_~i~0;main_~i~0 := 1 + main_#t~post2;havoc main_#t~post2; 147#L20-3 assume !(main_~i~0 < main_~MAX~0); 144#L20-4 call write~int(0, main_~#str1~0.base, main_~#str1~0.offset + (main_~MAX~0 - 1), 1);main_~j~0 := 0;main_~i~0 := main_~MAX~0 - 1; 145#L27-3 [2019-12-07 18:53:06,491 INFO L796 eck$LassoCheckResult]: Loop: 145#L27-3 assume !!(main_~i~0 >= 0);call main_#t~mem5 := read~int(main_~#str1~0.base, main_~#str1~0.offset, 1);call write~int(main_#t~mem5, main_~#str2~0.base, main_~#str2~0.offset + main_~j~0, 1);havoc main_#t~mem5;main_#t~post6 := main_~j~0;main_~j~0 := 1 + main_#t~post6;havoc main_#t~post6; 149#L27-2 main_#t~post4 := main_~i~0;main_~i~0 := main_#t~post4 - 1;havoc main_#t~post4; 145#L27-3 [2019-12-07 18:53:06,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:53:06,492 INFO L82 PathProgramCache]: Analyzing trace with hash 889660429, now seen corresponding path program 1 times [2019-12-07 18:53:06,492 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:53:06,492 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806432328] [2019-12-07 18:53:06,492 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:53:06,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:53:06,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:53:06,517 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:53:06,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:53:06,518 INFO L82 PathProgramCache]: Analyzing trace with hash 1731, now seen corresponding path program 2 times [2019-12-07 18:53:06,518 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:53:06,518 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980274753] [2019-12-07 18:53:06,518 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:53:06,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:53:06,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:53:06,526 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:53:06,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:53:06,526 INFO L82 PathProgramCache]: Analyzing trace with hash 265181135, now seen corresponding path program 1 times [2019-12-07 18:53:06,526 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:53:06,526 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155992626] [2019-12-07 18:53:06,526 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:53:06,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:53:06,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:53:06,555 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:53:06,738 WARN L192 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 74 [2019-12-07 18:53:06,869 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2019-12-07 18:53:06,872 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 18:53:06,872 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 18:53:06,872 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 18:53:06,872 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 18:53:06,872 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 18:53:06,873 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:53:06,873 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 18:53:06,873 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 18:53:06,873 INFO L133 ssoRankerPreferences]: Filename of dumped script: invert_string-1.c_Iteration3_Lasso [2019-12-07 18:53:06,873 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 18:53:06,873 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 18:53:06,891 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:53:06,893 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:53:06,894 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:53:06,897 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:53:06,981 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:53:06,982 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:53:06,984 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:53:06,985 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:53:06,986 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:53:06,987 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:53:06,988 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:53:06,990 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:53:06,991 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:53:06,992 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:53:06,994 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:53:07,180 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 18:53:07,180 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d635873-5e57-4429-999a-2f20553dc1a3/bin/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:53:07,183 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:53:07,184 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:53:07,185 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 18:53:07,185 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:53:07,185 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:53:07,185 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:53:07,185 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 18:53:07,185 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 18:53:07,187 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d635873-5e57-4429-999a-2f20553dc1a3/bin/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:53:07,191 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:53:07,193 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:53:07,193 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 18:53:07,193 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:53:07,193 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:53:07,193 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:53:07,193 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 18:53:07,193 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 18:53:07,194 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d635873-5e57-4429-999a-2f20553dc1a3/bin/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:53:07,198 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:53:07,199 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:53:07,199 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:53:07,199 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:53:07,200 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:53:07,201 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 18:53:07,201 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 18:53:07,204 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d635873-5e57-4429-999a-2f20553dc1a3/bin/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:53:07,209 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:53:07,210 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:53:07,210 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:53:07,210 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:53:07,210 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:53:07,212 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 18:53:07,213 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 18:53:07,216 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d635873-5e57-4429-999a-2f20553dc1a3/bin/uautomizer/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:53:07,220 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:53:07,222 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:53:07,222 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:53:07,222 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:53:07,222 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:53:07,225 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 18:53:07,225 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 18:53:07,229 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d635873-5e57-4429-999a-2f20553dc1a3/bin/uautomizer/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:53:07,234 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:53:07,236 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:53:07,236 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:53:07,236 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:53:07,236 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:53:07,243 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 18:53:07,243 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 18:53:07,255 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 18:53:07,298 INFO L443 ModelExtractionUtils]: Simplification made 24 calls to the SMT solver. [2019-12-07 18:53:07,298 INFO L444 ModelExtractionUtils]: 3 out of 25 variables were initially zero. Simplification set additionally 18 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d635873-5e57-4429-999a-2f20553dc1a3/bin/uautomizer/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:53:07,300 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 18:53:07,303 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2019-12-07 18:53:07,303 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 18:53:07,303 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~#str2~0.offset, ULTIMATE.start_main_~j~0, v_rep(select #length ULTIMATE.start_main_~#str2~0.base)_2) = -1*ULTIMATE.start_main_~#str2~0.offset - 1*ULTIMATE.start_main_~j~0 + 1*v_rep(select #length ULTIMATE.start_main_~#str2~0.base)_2 Supporting invariants [] [2019-12-07 18:53:07,310 INFO L297 tatePredicateManager]: 3 out of 3 supporting invariants were superfluous and have been removed [2019-12-07 18:53:07,311 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2019-12-07 18:53:07,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:53:07,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:53:07,327 INFO L264 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 18:53:07,327 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:53:07,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:53:07,331 INFO L264 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 18:53:07,332 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:53:07,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:53:07,343 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-12-07 18:53:07,343 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 15 transitions. cyclomatic complexity: 5 Second operand 3 states. [2019-12-07 18:53:07,349 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 15 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 17 states and 21 transitions. Complement of second has 5 states. [2019-12-07 18:53:07,350 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-12-07 18:53:07,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 18:53:07,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 11 transitions. [2019-12-07 18:53:07,350 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 6 letters. Loop has 2 letters. [2019-12-07 18:53:07,351 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:53:07,351 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 8 letters. Loop has 2 letters. [2019-12-07 18:53:07,351 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:53:07,351 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 6 letters. Loop has 4 letters. [2019-12-07 18:53:07,351 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:53:07,352 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 21 transitions. [2019-12-07 18:53:07,352 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-12-07 18:53:07,353 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 16 states and 19 transitions. [2019-12-07 18:53:07,353 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2019-12-07 18:53:07,353 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2019-12-07 18:53:07,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 19 transitions. [2019-12-07 18:53:07,353 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 18:53:07,353 INFO L688 BuchiCegarLoop]: Abstraction has 16 states and 19 transitions. [2019-12-07 18:53:07,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states and 19 transitions. [2019-12-07 18:53:07,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2019-12-07 18:53:07,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-12-07 18:53:07,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2019-12-07 18:53:07,355 INFO L711 BuchiCegarLoop]: Abstraction has 15 states and 18 transitions. [2019-12-07 18:53:07,355 INFO L591 BuchiCegarLoop]: Abstraction has 15 states and 18 transitions. [2019-12-07 18:53:07,355 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-12-07 18:53:07,355 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 18 transitions. [2019-12-07 18:53:07,356 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-12-07 18:53:07,356 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 18:53:07,356 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 18:53:07,357 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:53:07,357 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-12-07 18:53:07,357 INFO L794 eck$LassoCheckResult]: Stem: 230#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 224#L-1 havoc main_#res;havoc main_#t~nondet1, main_#t~nondet3, main_#t~post2, main_#t~mem5, main_#t~post6, main_#t~post4, main_#t~mem8, main_#t~mem9, main_#t~post10, main_#t~post7, main_~MAX~0, main_~#str1~0.base, main_~#str1~0.offset, main_~#str2~0.base, main_~#str2~0.offset, main_~cont~0, main_~i~0, main_~j~0;main_~MAX~0 := (if main_#t~nondet1 % 4294967296 % 4294967296 <= 2147483647 then main_#t~nondet1 % 4294967296 % 4294967296 else main_#t~nondet1 % 4294967296 % 4294967296 - 4294967296);havoc main_#t~nondet1;assume 0 != (if main_~MAX~0 > 0 then 1 else 0);call main_~#str1~0.base, main_~#str1~0.offset := #Ultimate.allocOnStack(main_~MAX~0);call main_~#str2~0.base, main_~#str2~0.offset := #Ultimate.allocOnStack(main_~MAX~0);havoc main_~cont~0;havoc main_~i~0;havoc main_~j~0;main_~cont~0 := 0;main_~i~0 := 0; 225#L20-3 assume !!(main_~i~0 < main_~MAX~0);call write~int(main_#t~nondet3, main_~#str1~0.base, main_~#str1~0.offset + main_~i~0, 1);havoc main_#t~nondet3; 233#L20-2 main_#t~post2 := main_~i~0;main_~i~0 := 1 + main_#t~post2;havoc main_#t~post2; 234#L20-3 assume !(main_~i~0 < main_~MAX~0); 231#L20-4 call write~int(0, main_~#str1~0.base, main_~#str1~0.offset + (main_~MAX~0 - 1), 1);main_~j~0 := 0;main_~i~0 := main_~MAX~0 - 1; 232#L27-3 assume !(main_~i~0 >= 0); 235#L27-4 main_~j~0 := main_~MAX~0 - 1;main_~i~0 := 0; 227#L33-3 [2019-12-07 18:53:07,357 INFO L796 eck$LassoCheckResult]: Loop: 227#L33-3 assume !!(main_~i~0 < main_~MAX~0);call main_#t~mem8 := read~int(main_~#str1~0.base, main_~#str1~0.offset + main_~i~0, 1);call main_#t~mem9 := read~int(main_~#str2~0.base, main_~#str2~0.offset + main_~j~0, 1);__VERIFIER_assert_#in~cond := (if main_#t~mem8 == main_#t~mem9 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 228#L5 assume !(0 == __VERIFIER_assert_~cond); 229#L5-2 havoc main_#t~mem8;havoc main_#t~mem9;main_#t~post10 := main_~j~0;main_~j~0 := main_#t~post10 - 1;havoc main_#t~post10; 226#L33-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 227#L33-3 [2019-12-07 18:53:07,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:53:07,357 INFO L82 PathProgramCache]: Analyzing trace with hash 265181077, now seen corresponding path program 1 times [2019-12-07 18:53:07,357 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:53:07,358 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042483292] [2019-12-07 18:53:07,358 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:53:07,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:53:07,381 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-07 18:53:07,382 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042483292] [2019-12-07 18:53:07,382 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:53:07,382 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 18:53:07,382 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290942887] [2019-12-07 18:53:07,382 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-12-07 18:53:07,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:53:07,382 INFO L82 PathProgramCache]: Analyzing trace with hash 2100362, now seen corresponding path program 1 times [2019-12-07 18:53:07,382 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:53:07,383 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467602897] [2019-12-07 18:53:07,383 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:53:07,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:53:07,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:53:07,391 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:53:07,469 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:53:07,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 18:53:07,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 18:53:07,470 INFO L87 Difference]: Start difference. First operand 15 states and 18 transitions. cyclomatic complexity: 6 Second operand 4 states. [2019-12-07 18:53:07,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:53:07,491 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2019-12-07 18:53:07,491 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 18:53:07,491 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 17 transitions. [2019-12-07 18:53:07,492 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-12-07 18:53:07,492 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 15 states and 17 transitions. [2019-12-07 18:53:07,493 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2019-12-07 18:53:07,493 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2019-12-07 18:53:07,493 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 17 transitions. [2019-12-07 18:53:07,493 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 18:53:07,493 INFO L688 BuchiCegarLoop]: Abstraction has 15 states and 17 transitions. [2019-12-07 18:53:07,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 17 transitions. [2019-12-07 18:53:07,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-12-07 18:53:07,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-12-07 18:53:07,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2019-12-07 18:53:07,495 INFO L711 BuchiCegarLoop]: Abstraction has 15 states and 17 transitions. [2019-12-07 18:53:07,495 INFO L591 BuchiCegarLoop]: Abstraction has 15 states and 17 transitions. [2019-12-07 18:53:07,495 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-12-07 18:53:07,495 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 17 transitions. [2019-12-07 18:53:07,495 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-12-07 18:53:07,495 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 18:53:07,496 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 18:53:07,496 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:53:07,496 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-12-07 18:53:07,496 INFO L794 eck$LassoCheckResult]: Stem: 269#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 265#L-1 havoc main_#res;havoc main_#t~nondet1, main_#t~nondet3, main_#t~post2, main_#t~mem5, main_#t~post6, main_#t~post4, main_#t~mem8, main_#t~mem9, main_#t~post10, main_#t~post7, main_~MAX~0, main_~#str1~0.base, main_~#str1~0.offset, main_~#str2~0.base, main_~#str2~0.offset, main_~cont~0, main_~i~0, main_~j~0;main_~MAX~0 := (if main_#t~nondet1 % 4294967296 % 4294967296 <= 2147483647 then main_#t~nondet1 % 4294967296 % 4294967296 else main_#t~nondet1 % 4294967296 % 4294967296 - 4294967296);havoc main_#t~nondet1;assume 0 != (if main_~MAX~0 > 0 then 1 else 0);call main_~#str1~0.base, main_~#str1~0.offset := #Ultimate.allocOnStack(main_~MAX~0);call main_~#str2~0.base, main_~#str2~0.offset := #Ultimate.allocOnStack(main_~MAX~0);havoc main_~cont~0;havoc main_~i~0;havoc main_~j~0;main_~cont~0 := 0;main_~i~0 := 0; 266#L20-3 assume !!(main_~i~0 < main_~MAX~0);call write~int(main_#t~nondet3, main_~#str1~0.base, main_~#str1~0.offset + main_~i~0, 1);havoc main_#t~nondet3; 272#L20-2 main_#t~post2 := main_~i~0;main_~i~0 := 1 + main_#t~post2;havoc main_#t~post2; 273#L20-3 assume !(main_~i~0 < main_~MAX~0); 270#L20-4 call write~int(0, main_~#str1~0.base, main_~#str1~0.offset + (main_~MAX~0 - 1), 1);main_~j~0 := 0;main_~i~0 := main_~MAX~0 - 1; 271#L27-3 assume !!(main_~i~0 >= 0);call main_#t~mem5 := read~int(main_~#str1~0.base, main_~#str1~0.offset, 1);call write~int(main_#t~mem5, main_~#str2~0.base, main_~#str2~0.offset + main_~j~0, 1);havoc main_#t~mem5;main_#t~post6 := main_~j~0;main_~j~0 := 1 + main_#t~post6;havoc main_#t~post6; 277#L27-2 main_#t~post4 := main_~i~0;main_~i~0 := main_#t~post4 - 1;havoc main_#t~post4; 275#L27-3 assume !(main_~i~0 >= 0); 274#L27-4 main_~j~0 := main_~MAX~0 - 1;main_~i~0 := 0; 264#L33-3 [2019-12-07 18:53:07,496 INFO L796 eck$LassoCheckResult]: Loop: 264#L33-3 assume !!(main_~i~0 < main_~MAX~0);call main_#t~mem8 := read~int(main_~#str1~0.base, main_~#str1~0.offset + main_~i~0, 1);call main_#t~mem9 := read~int(main_~#str2~0.base, main_~#str2~0.offset + main_~j~0, 1);__VERIFIER_assert_#in~cond := (if main_#t~mem8 == main_#t~mem9 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 267#L5 assume !(0 == __VERIFIER_assert_~cond); 268#L5-2 havoc main_#t~mem8;havoc main_#t~mem9;main_#t~post10 := main_~j~0;main_~j~0 := main_#t~post10 - 1;havoc main_#t~post10; 263#L33-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 264#L33-3 [2019-12-07 18:53:07,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:53:07,497 INFO L82 PathProgramCache]: Analyzing trace with hash 1436000983, now seen corresponding path program 1 times [2019-12-07 18:53:07,497 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:53:07,497 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075533973] [2019-12-07 18:53:07,497 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:53:07,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:53:07,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:53:07,528 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:53:07,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:53:07,528 INFO L82 PathProgramCache]: Analyzing trace with hash 2100362, now seen corresponding path program 2 times [2019-12-07 18:53:07,528 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:53:07,528 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265762880] [2019-12-07 18:53:07,529 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:53:07,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:53:07,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:53:07,538 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:53:07,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:53:07,539 INFO L82 PathProgramCache]: Analyzing trace with hash -1461824416, now seen corresponding path program 1 times [2019-12-07 18:53:07,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:53:07,539 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725722826] [2019-12-07 18:53:07,539 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:53:07,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:53:07,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:53:07,576 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:53:07,862 WARN L192 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 95 [2019-12-07 18:53:07,995 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2019-12-07 18:53:07,997 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 18:53:07,997 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 18:53:07,997 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 18:53:07,997 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 18:53:07,997 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 18:53:07,997 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:53:07,997 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 18:53:07,997 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 18:53:07,997 INFO L133 ssoRankerPreferences]: Filename of dumped script: invert_string-1.c_Iteration5_Lasso [2019-12-07 18:53:07,997 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 18:53:07,997 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 18:53:07,999 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:53:08,001 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:53:08,002 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:53:08,003 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:53:08,005 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:53:08,006 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:53:08,119 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:53:08,120 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:53:08,123 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:53:08,124 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:53:08,126 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:53:08,127 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:53:08,128 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:53:08,129 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:53:08,130 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:53:08,131 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:53:08,332 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 18:53:08,332 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d635873-5e57-4429-999a-2f20553dc1a3/bin/uautomizer/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:53:08,335 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:53:08,336 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:53:08,336 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 18:53:08,337 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:53:08,337 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:53:08,337 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:53:08,337 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 18:53:08,337 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 18:53:08,338 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d635873-5e57-4429-999a-2f20553dc1a3/bin/uautomizer/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:53:08,342 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:53:08,343 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:53:08,343 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 18:53:08,343 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:53:08,344 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:53:08,344 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:53:08,344 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 18:53:08,344 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 18:53:08,345 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d635873-5e57-4429-999a-2f20553dc1a3/bin/uautomizer/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:53:08,349 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:53:08,350 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:53:08,350 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 18:53:08,350 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:53:08,351 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:53:08,351 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:53:08,351 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 18:53:08,351 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 18:53:08,352 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d635873-5e57-4429-999a-2f20553dc1a3/bin/uautomizer/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:53:08,357 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:53:08,358 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:53:08,358 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:53:08,358 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:53:08,358 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:53:08,359 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 18:53:08,359 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 18:53:08,362 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d635873-5e57-4429-999a-2f20553dc1a3/bin/uautomizer/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:53:08,366 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:53:08,367 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:53:08,368 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 18:53:08,368 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:53:08,368 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:53:08,368 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:53:08,368 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 18:53:08,368 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 18:53:08,370 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d635873-5e57-4429-999a-2f20553dc1a3/bin/uautomizer/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:53:08,374 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:53:08,376 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:53:08,376 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:53:08,376 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:53:08,376 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:53:08,382 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 18:53:08,382 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 18:53:08,393 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 18:53:08,411 INFO L443 ModelExtractionUtils]: Simplification made 16 calls to the SMT solver. [2019-12-07 18:53:08,412 INFO L444 ModelExtractionUtils]: 9 out of 25 variables were initially zero. Simplification set additionally 12 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d635873-5e57-4429-999a-2f20553dc1a3/bin/uautomizer/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:53:08,424 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 18:53:08,426 INFO L438 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2019-12-07 18:53:08,427 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 18:53:08,427 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select #length ULTIMATE.start_main_~#str1~0.base)_3, ULTIMATE.start_main_~j~0) = 1*v_rep(select #length ULTIMATE.start_main_~#str1~0.base)_3 + 2*ULTIMATE.start_main_~j~0 Supporting invariants [-1*ULTIMATE.start_main_~#str2~0.offset >= 0] [2019-12-07 18:53:08,438 INFO L297 tatePredicateManager]: 4 out of 5 supporting invariants were superfluous and have been removed [2019-12-07 18:53:08,440 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2019-12-07 18:53:08,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:53:08,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:53:08,466 INFO L264 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjunts are in the unsatisfiable core [2019-12-07 18:53:08,467 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:53:08,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:53:08,477 INFO L264 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 7 conjunts are in the unsatisfiable core [2019-12-07 18:53:08,478 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:53:08,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:53:08,514 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2019-12-07 18:53:08,514 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 17 transitions. cyclomatic complexity: 5 Second operand 5 states. [2019-12-07 18:53:08,535 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 17 transitions. cyclomatic complexity: 5. Second operand 5 states. Result 20 states and 23 transitions. Complement of second has 7 states. [2019-12-07 18:53:08,536 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2019-12-07 18:53:08,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-12-07 18:53:08,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 15 transitions. [2019-12-07 18:53:08,536 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 10 letters. Loop has 4 letters. [2019-12-07 18:53:08,536 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:53:08,536 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 14 letters. Loop has 4 letters. [2019-12-07 18:53:08,537 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:53:08,537 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 10 letters. Loop has 8 letters. [2019-12-07 18:53:08,537 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:53:08,537 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20 states and 23 transitions. [2019-12-07 18:53:08,538 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-12-07 18:53:08,538 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20 states to 0 states and 0 transitions. [2019-12-07 18:53:08,538 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-12-07 18:53:08,538 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-12-07 18:53:08,538 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-12-07 18:53:08,538 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 18:53:08,538 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 18:53:08,538 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 18:53:08,538 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 18:53:08,538 INFO L424 BuchiCegarLoop]: ======== Iteration 6============ [2019-12-07 18:53:08,538 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-12-07 18:53:08,538 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-12-07 18:53:08,538 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-12-07 18:53:08,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 07.12 06:53:08 BoogieIcfgContainer [2019-12-07 18:53:08,542 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-12-07 18:53:08,543 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 18:53:08,543 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 18:53:08,543 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 18:53:08,543 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:53:05" (3/4) ... [2019-12-07 18:53:08,546 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 18:53:08,546 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 18:53:08,547 INFO L168 Benchmark]: Toolchain (without parser) took 3608.76 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 325.1 MB). Free memory was 946.2 MB in the beginning and 1.3 GB in the end (delta: -364.6 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 18:53:08,548 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 961.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 18:53:08,548 INFO L168 Benchmark]: CACSL2BoogieTranslator took 207.05 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 946.2 MB in the beginning and 1.1 GB in the end (delta: -187.9 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. [2019-12-07 18:53:08,549 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.34 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. [2019-12-07 18:53:08,549 INFO L168 Benchmark]: Boogie Preprocessor took 17.20 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. [2019-12-07 18:53:08,549 INFO L168 Benchmark]: RCFGBuilder took 178.16 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: 21.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 11.5 GB. [2019-12-07 18:53:08,550 INFO L168 Benchmark]: BuchiAutomizer took 3175.24 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 181.9 MB). Free memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: -198.4 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 18:53:08,550 INFO L168 Benchmark]: Witness Printer took 3.59 ms. Allocated memory is still 1.4 GB. Free memory is still 1.3 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 18:53:08,552 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 961.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 207.05 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 946.2 MB in the beginning and 1.1 GB in the end (delta: -187.9 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 24.34 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 17.20 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 178.16 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: 21.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 3175.24 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 181.9 MB). Free memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: -198.4 MB). There was no memory consumed. Max. memory is 11.5 GB. * Witness Printer took 3.59 ms. Allocated memory is still 1.4 GB. Free memory is still 1.3 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #length - 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 5 terminating modules (2 trivial, 3 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -1 * i + MAX and consists of 5 locations. One deterministic module has affine ranking function -1 * str2 + -1 * j + unknown-#length-unknown[str2] and consists of 3 locations. One deterministic module has affine ranking function unknown-#length-unknown[str1] + 2 * j and consists of 5 locations. 2 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.1s and 6 iterations. TraceHistogramMax:1. Analysis of lassos took 2.7s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 15 states and ocurred in iteration 3. Nontrivial modules had stage [3, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 40 SDtfs, 36 SDslu, 12 SDs, 0 SdLazy, 40 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU2 SILI0 SILT0 lasso3 LassoPreprocessingBenchmarks: Lassos: inital164 mio100 ax100 hnf100 lsp92 ukn60 mio100 lsp68 div160 bol100 ite100 ukn100 eq158 hnf69 smp94 dnf100 smp100 tf100 neg100 sie102 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 9ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...