./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-libowfat/strcspn.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_a97cb40e-a93e-44ac-a90e-e2c6b003b058/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_a97cb40e-a93e-44ac-a90e-e2c6b003b058/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a97cb40e-a93e-44ac-a90e-e2c6b003b058/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a97cb40e-a93e-44ac-a90e-e2c6b003b058/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-libowfat/strcspn.i -s /tmp/vcloud-vcloud-master/worker/run_dir_a97cb40e-a93e-44ac-a90e-e2c6b003b058/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a97cb40e-a93e-44ac-a90e-e2c6b003b058/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash eaca3e09b762fe94634aa0b3e6a04213782212a5 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-6b5699a [2019-11-25 08:57:40,235 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:57:40,237 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:57:40,252 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:57:40,252 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:57:40,254 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:57:40,256 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:57:40,264 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:57:40,269 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:57:40,273 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:57:40,274 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:57:40,275 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:57:40,275 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:57:40,277 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:57:40,278 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:57:40,279 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:57:40,280 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:57:40,280 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:57:40,283 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:57:40,286 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:57:40,290 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:57:40,293 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:57:40,295 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:57:40,295 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:57:40,297 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:57:40,297 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:57:40,298 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:57:40,299 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:57:40,299 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:57:40,301 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:57:40,301 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:57:40,302 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:57:40,303 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:57:40,304 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:57:40,304 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:57:40,305 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:57:40,305 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:57:40,305 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:57:40,306 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:57:40,306 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:57:40,307 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:57:40,308 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a97cb40e-a93e-44ac-a90e-e2c6b003b058/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-11-25 08:57:40,333 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:57:40,342 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:57:40,343 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:57:40,343 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:57:40,344 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:57:40,344 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-25 08:57:40,344 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-25 08:57:40,344 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-25 08:57:40,344 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-25 08:57:40,345 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-25 08:57:40,345 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-25 08:57:40,345 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:57:40,346 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-25 08:57:40,346 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-25 08:57:40,346 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:57:40,347 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-25 08:57:40,347 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-25 08:57:40,347 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-25 08:57:40,347 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-25 08:57:40,347 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-25 08:57:40,348 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:57:40,348 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-25 08:57:40,348 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:57:40,348 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:57:40,348 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-25 08:57:40,349 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:57:40,349 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-25 08:57:40,349 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-25 08:57:40,350 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-25 08:57:40,351 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_a97cb40e-a93e-44ac-a90e-e2c6b003b058/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eaca3e09b762fe94634aa0b3e6a04213782212a5 [2019-11-25 08:57:40,513 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:57:40,528 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:57:40,530 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:57:40,532 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:57:40,533 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:57:40,534 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a97cb40e-a93e-44ac-a90e-e2c6b003b058/bin/uautomizer/../../sv-benchmarks/c/termination-libowfat/strcspn.i [2019-11-25 08:57:40,582 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a97cb40e-a93e-44ac-a90e-e2c6b003b058/bin/uautomizer/data/5d94b64d5/4794915e87b345828c9489bf5687b26b/FLAG7058293d7 [2019-11-25 08:57:41,056 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:57:41,057 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a97cb40e-a93e-44ac-a90e-e2c6b003b058/sv-benchmarks/c/termination-libowfat/strcspn.i [2019-11-25 08:57:41,083 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a97cb40e-a93e-44ac-a90e-e2c6b003b058/bin/uautomizer/data/5d94b64d5/4794915e87b345828c9489bf5687b26b/FLAG7058293d7 [2019-11-25 08:57:41,555 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a97cb40e-a93e-44ac-a90e-e2c6b003b058/bin/uautomizer/data/5d94b64d5/4794915e87b345828c9489bf5687b26b [2019-11-25 08:57:41,557 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:57:41,559 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-25 08:57:41,559 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:57:41,560 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:57:41,565 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:57:41,566 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:57:41" (1/1) ... [2019-11-25 08:57:41,568 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6744b18c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:57:41, skipping insertion in model container [2019-11-25 08:57:41,568 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:57:41" (1/1) ... [2019-11-25 08:57:41,573 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:57:41,612 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:57:41,913 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:57:41,922 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:57:41,957 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:57:42,003 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:57:42,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:57:42 WrapperNode [2019-11-25 08:57:42,003 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:57:42,004 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-25 08:57:42,004 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-25 08:57:42,004 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-25 08:57:42,012 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:57:42" (1/1) ... [2019-11-25 08:57:42,029 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:57:42" (1/1) ... [2019-11-25 08:57:42,047 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-25 08:57:42,047 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:57:42,048 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:57:42,048 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:57:42,056 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:57:42" (1/1) ... [2019-11-25 08:57:42,056 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:57:42" (1/1) ... [2019-11-25 08:57:42,059 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:57:42" (1/1) ... [2019-11-25 08:57:42,059 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:57:42" (1/1) ... [2019-11-25 08:57:42,065 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:57:42" (1/1) ... [2019-11-25 08:57:42,068 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:57:42" (1/1) ... [2019-11-25 08:57:42,070 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:57:42" (1/1) ... [2019-11-25 08:57:42,072 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:57:42,073 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:57:42,073 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:57:42,073 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:57:42,074 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:57:42" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a97cb40e-a93e-44ac-a90e-e2c6b003b058/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:57:42,146 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-25 08:57:42,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-25 08:57:42,147 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-25 08:57:42,147 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-25 08:57:42,147 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:57:42,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:57:42,454 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:57:42,454 INFO L284 CfgBuilder]: Removed 8 assume(true) statements. [2019-11-25 08:57:42,455 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:57:42 BoogieIcfgContainer [2019-11-25 08:57:42,455 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:57:42,456 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-25 08:57:42,456 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-25 08:57:42,459 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-25 08:57:42,459 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-25 08:57:42,460 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 25.11 08:57:41" (1/3) ... [2019-11-25 08:57:42,461 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4f97b3d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 25.11 08:57:42, skipping insertion in model container [2019-11-25 08:57:42,461 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-25 08:57:42,461 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:57:42" (2/3) ... [2019-11-25 08:57:42,461 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4f97b3d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 25.11 08:57:42, skipping insertion in model container [2019-11-25 08:57:42,461 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-25 08:57:42,461 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:57:42" (3/3) ... [2019-11-25 08:57:42,463 INFO L371 chiAutomizerObserver]: Analyzing ICFG strcspn.i [2019-11-25 08:57:42,502 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-25 08:57:42,502 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-25 08:57:42,503 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-25 08:57:42,503 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:57:42,503 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:57:42,503 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-25 08:57:42,503 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:57:42,503 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-25 08:57:42,516 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states. [2019-11-25 08:57:42,535 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2019-11-25 08:57:42,535 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:57:42,535 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:57:42,541 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-11-25 08:57:42,541 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2019-11-25 08:57:42,541 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-25 08:57:42,542 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states. [2019-11-25 08:57:42,543 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2019-11-25 08:57:42,543 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:57:42,543 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:57:42,544 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-11-25 08:57:42,544 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2019-11-25 08:57:42,551 INFO L794 eck$LassoCheckResult]: Stem: 10#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 8#L-1true havoc main_#res;havoc main_#t~nondet9, main_#t~malloc10.base, main_#t~malloc10.offset, main_#t~nondet11, main_#t~malloc12.base, main_#t~malloc12.offset, main_#t~ret13, main_~in_len~0, main_~in~0.base, main_~in~0.offset, main_~out_len~0, main_~out~0.base, main_~out~0.offset;main_~in_len~0 := main_#t~nondet9;havoc main_#t~nondet9; 12#L519true assume !(main_~in_len~0 < 1);call main_#t~malloc10.base, main_#t~malloc10.offset := #Ultimate.allocOnStack(main_~in_len~0);main_~in~0.base, main_~in~0.offset := main_#t~malloc10.base, main_#t~malloc10.offset;call write~int(0, main_~in~0.base, main_~in~0.offset + (main_~in_len~0 - 1), 1);main_~out_len~0 := main_#t~nondet11;havoc main_#t~nondet11; 6#L523true assume !(main_~out_len~0 < 1);call main_#t~malloc12.base, main_#t~malloc12.offset := #Ultimate.allocOnStack(main_~out_len~0);main_~out~0.base, main_~out~0.offset := main_#t~malloc12.base, main_#t~malloc12.offset;call write~int(0, main_~out~0.base, main_~out~0.offset + (main_~out_len~0 - 1), 1);strcspn_#in~s.base, strcspn_#in~s.offset, strcspn_#in~reject.base, strcspn_#in~reject.offset := main_~in~0.base, main_~in~0.offset, main_~out~0.base, main_~out~0.offset;havoc strcspn_#res;havoc strcspn_#t~mem4, strcspn_#t~mem5, strcspn_#t~pre3, strcspn_#t~mem6, strcspn_#t~pre7, strcspn_#t~pre2.base, strcspn_#t~pre2.offset, strcspn_#t~mem8, strcspn_~s.base, strcspn_~s.offset, strcspn_~reject.base, strcspn_~reject.offset, strcspn_~l~0, strcspn_~i~0;strcspn_~s.base, strcspn_~s.offset := strcspn_#in~s.base, strcspn_#in~s.offset;strcspn_~reject.base, strcspn_~reject.offset := strcspn_#in~reject.base, strcspn_#in~reject.offset;strcspn_~l~0 := 0;havoc strcspn_~i~0; 18#L510-4true [2019-11-25 08:57:42,551 INFO L796 eck$LassoCheckResult]: Loop: 18#L510-4true call strcspn_#t~mem8 := read~int(strcspn_~s.base, strcspn_~s.offset, 1); 11#L510-1true assume !!(0 != strcspn_#t~mem8);havoc strcspn_#t~mem8;strcspn_~i~0 := 0; 15#L511-4true assume !true; 19#L511-5true strcspn_#t~pre7 := 1 + strcspn_~l~0;strcspn_~l~0 := 1 + strcspn_~l~0;havoc strcspn_#t~pre7; 16#L510-3true strcspn_#t~pre2.base, strcspn_#t~pre2.offset := strcspn_~s.base, 1 + strcspn_~s.offset;strcspn_~s.base, strcspn_~s.offset := strcspn_~s.base, 1 + strcspn_~s.offset;havoc strcspn_#t~pre2.base, strcspn_#t~pre2.offset; 18#L510-4true [2019-11-25 08:57:42,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:57:42,557 INFO L82 PathProgramCache]: Analyzing trace with hash 925672, now seen corresponding path program 1 times [2019-11-25 08:57:42,565 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:57:42,565 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467092484] [2019-11-25 08:57:42,565 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:57:42,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:57:42,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:57:42,690 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:57:42,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:57:42,691 INFO L82 PathProgramCache]: Analyzing trace with hash 44069891, now seen corresponding path program 1 times [2019-11-25 08:57:42,691 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:57:42,691 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542095861] [2019-11-25 08:57:42,692 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:57:42,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:57:42,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:57:42,719 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542095861] [2019-11-25 08:57:42,720 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:57:42,720 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-25 08:57:42,720 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032427329] [2019-11-25 08:57:42,724 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-11-25 08:57:42,725 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:57:42,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-25 08:57:42,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-25 08:57:42,741 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 2 states. [2019-11-25 08:57:42,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:57:42,747 INFO L93 Difference]: Finished difference Result 17 states and 21 transitions. [2019-11-25 08:57:42,747 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-25 08:57:42,748 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 21 transitions. [2019-11-25 08:57:42,750 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2019-11-25 08:57:42,752 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 12 states and 13 transitions. [2019-11-25 08:57:42,753 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2019-11-25 08:57:42,754 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2019-11-25 08:57:42,754 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 13 transitions. [2019-11-25 08:57:42,754 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-25 08:57:42,754 INFO L688 BuchiCegarLoop]: Abstraction has 12 states and 13 transitions. [2019-11-25 08:57:42,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 13 transitions. [2019-11-25 08:57:42,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-11-25 08:57:42,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-25 08:57:42,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2019-11-25 08:57:42,776 INFO L711 BuchiCegarLoop]: Abstraction has 12 states and 13 transitions. [2019-11-25 08:57:42,776 INFO L591 BuchiCegarLoop]: Abstraction has 12 states and 13 transitions. [2019-11-25 08:57:42,776 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-25 08:57:42,777 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 13 transitions. [2019-11-25 08:57:42,777 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2019-11-25 08:57:42,777 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:57:42,777 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:57:42,778 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-11-25 08:57:42,778 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2019-11-25 08:57:42,778 INFO L794 eck$LassoCheckResult]: Stem: 47#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 42#L-1 havoc main_#res;havoc main_#t~nondet9, main_#t~malloc10.base, main_#t~malloc10.offset, main_#t~nondet11, main_#t~malloc12.base, main_#t~malloc12.offset, main_#t~ret13, main_~in_len~0, main_~in~0.base, main_~in~0.offset, main_~out_len~0, main_~out~0.base, main_~out~0.offset;main_~in_len~0 := main_#t~nondet9;havoc main_#t~nondet9; 43#L519 assume !(main_~in_len~0 < 1);call main_#t~malloc10.base, main_#t~malloc10.offset := #Ultimate.allocOnStack(main_~in_len~0);main_~in~0.base, main_~in~0.offset := main_#t~malloc10.base, main_#t~malloc10.offset;call write~int(0, main_~in~0.base, main_~in~0.offset + (main_~in_len~0 - 1), 1);main_~out_len~0 := main_#t~nondet11;havoc main_#t~nondet11; 50#L523 assume !(main_~out_len~0 < 1);call main_#t~malloc12.base, main_#t~malloc12.offset := #Ultimate.allocOnStack(main_~out_len~0);main_~out~0.base, main_~out~0.offset := main_#t~malloc12.base, main_#t~malloc12.offset;call write~int(0, main_~out~0.base, main_~out~0.offset + (main_~out_len~0 - 1), 1);strcspn_#in~s.base, strcspn_#in~s.offset, strcspn_#in~reject.base, strcspn_#in~reject.offset := main_~in~0.base, main_~in~0.offset, main_~out~0.base, main_~out~0.offset;havoc strcspn_#res;havoc strcspn_#t~mem4, strcspn_#t~mem5, strcspn_#t~pre3, strcspn_#t~mem6, strcspn_#t~pre7, strcspn_#t~pre2.base, strcspn_#t~pre2.offset, strcspn_#t~mem8, strcspn_~s.base, strcspn_~s.offset, strcspn_~reject.base, strcspn_~reject.offset, strcspn_~l~0, strcspn_~i~0;strcspn_~s.base, strcspn_~s.offset := strcspn_#in~s.base, strcspn_#in~s.offset;strcspn_~reject.base, strcspn_~reject.offset := strcspn_#in~reject.base, strcspn_#in~reject.offset;strcspn_~l~0 := 0;havoc strcspn_~i~0; 53#L510-4 [2019-11-25 08:57:42,778 INFO L796 eck$LassoCheckResult]: Loop: 53#L510-4 call strcspn_#t~mem8 := read~int(strcspn_~s.base, strcspn_~s.offset, 1); 48#L510-1 assume !!(0 != strcspn_#t~mem8);havoc strcspn_#t~mem8;strcspn_~i~0 := 0; 49#L511-4 call strcspn_#t~mem6 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 44#L511-1 assume !(0 != strcspn_#t~mem6);havoc strcspn_#t~mem6; 45#L511-5 strcspn_#t~pre7 := 1 + strcspn_~l~0;strcspn_~l~0 := 1 + strcspn_~l~0;havoc strcspn_#t~pre7; 52#L510-3 strcspn_#t~pre2.base, strcspn_#t~pre2.offset := strcspn_~s.base, 1 + strcspn_~s.offset;strcspn_~s.base, strcspn_~s.offset := strcspn_~s.base, 1 + strcspn_~s.offset;havoc strcspn_#t~pre2.base, strcspn_#t~pre2.offset; 53#L510-4 [2019-11-25 08:57:42,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:57:42,779 INFO L82 PathProgramCache]: Analyzing trace with hash 925672, now seen corresponding path program 2 times [2019-11-25 08:57:42,779 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:57:42,779 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632554258] [2019-11-25 08:57:42,779 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:57:42,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:57:42,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:57:42,817 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:57:42,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:57:42,817 INFO L82 PathProgramCache]: Analyzing trace with hash 1365737035, now seen corresponding path program 1 times [2019-11-25 08:57:42,817 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:57:42,818 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555414295] [2019-11-25 08:57:42,818 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:57:42,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:57:42,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:57:42,835 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:57:42,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:57:42,835 INFO L82 PathProgramCache]: Analyzing trace with hash 736220402, now seen corresponding path program 1 times [2019-11-25 08:57:42,836 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:57:42,836 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389485128] [2019-11-25 08:57:42,836 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:57:42,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:57:42,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:57:42,935 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:57:43,525 WARN L192 SmtUtils]: Spent 481.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 88 [2019-11-25 08:57:43,680 WARN L192 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2019-11-25 08:57:43,692 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:57:43,693 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:57:43,693 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:57:43,693 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:57:43,693 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:57:43,694 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:57:43,694 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:57:43,694 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:57:43,694 INFO L133 ssoRankerPreferences]: Filename of dumped script: strcspn.i_Iteration2_Lasso [2019-11-25 08:57:43,694 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:57:43,694 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:57:43,735 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:57:43,746 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:57:43,751 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:57:43,754 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:57:43,758 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:57:44,088 WARN L192 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64 [2019-11-25 08:57:44,229 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2019-11-25 08:57:44,231 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:57:44,235 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:57:44,237 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:57:44,240 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:57:44,243 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:57:44,248 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:57:44,251 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:57:44,253 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:57:44,256 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:57:44,258 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:57:44,261 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:57:44,263 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:57:44,816 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:57:44,821 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a97cb40e-a93e-44ac-a90e-e2c6b003b058/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:57:44,827 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:57:44,829 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:57:44,829 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:57:44,830 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:57:44,830 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:57:44,830 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:57:44,833 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:57:44,833 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:57:44,835 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a97cb40e-a93e-44ac-a90e-e2c6b003b058/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:57:44,855 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:57:44,857 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:57:44,857 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:57:44,857 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:57:44,857 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:57:44,862 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:57:44,862 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:57:44,867 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a97cb40e-a93e-44ac-a90e-e2c6b003b058/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:57:44,882 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 Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:57:44,884 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:57:44,884 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:57:44,884 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:57:44,884 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:57:44,884 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:57:44,885 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:57:44,885 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:57:44,886 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a97cb40e-a93e-44ac-a90e-e2c6b003b058/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 [2019-11-25 08:57:44,894 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:57:44,896 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:57:44,896 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:57:44,896 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:57:44,896 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:57:44,899 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:57:44,899 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-25 08:57:44,903 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a97cb40e-a93e-44ac-a90e-e2c6b003b058/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 [2019-11-25 08:57:44,917 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:57:44,918 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:57:44,919 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:57:44,919 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:57:44,919 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:57:44,922 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:57:44,922 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-25 08:57:44,925 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a97cb40e-a93e-44ac-a90e-e2c6b003b058/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:57:44,934 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:57:44,936 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:57:44,936 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:57:44,937 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:57:44,937 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:57:44,947 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:57:44,947 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-25 08:57:44,963 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:57:45,098 INFO L443 ModelExtractionUtils]: Simplification made 12 calls to the SMT solver. [2019-11-25 08:57:45,098 INFO L444 ModelExtractionUtils]: 13 out of 25 variables were initially zero. Simplification set additionally 9 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a97cb40e-a93e-44ac-a90e-e2c6b003b058/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:57:45,110 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-25 08:57:45,116 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2019-11-25 08:57:45,117 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:57:45,117 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select #length ULTIMATE.start_strcspn_~s.base)_1, ULTIMATE.start_strcspn_~s.offset) = 1*v_rep(select #length ULTIMATE.start_strcspn_~s.base)_1 - 1*ULTIMATE.start_strcspn_~s.offset Supporting invariants [] [2019-11-25 08:57:45,207 INFO L297 tatePredicateManager]: 15 out of 15 supporting invariants were superfluous and have been removed [2019-11-25 08:57:45,214 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2019-11-25 08:57:45,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:57:45,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:57:45,266 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:57:45,267 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:57:45,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:57:45,282 INFO L255 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-25 08:57:45,282 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:57:45,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:57:45,298 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-25 08:57:45,299 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 13 transitions. cyclomatic complexity: 2 Second operand 3 states. [2019-11-25 08:57:45,351 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 13 transitions. cyclomatic complexity: 2. Second operand 3 states. Result 20 states and 23 transitions. Complement of second has 4 states. [2019-11-25 08:57:45,353 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 [2019-11-25 08:57:45,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-25 08:57:45,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 13 transitions. [2019-11-25 08:57:45,356 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 13 transitions. Stem has 4 letters. Loop has 6 letters. [2019-11-25 08:57:45,357 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:57:45,357 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 13 transitions. Stem has 10 letters. Loop has 6 letters. [2019-11-25 08:57:45,357 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:57:45,357 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 13 transitions. Stem has 4 letters. Loop has 12 letters. [2019-11-25 08:57:45,358 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:57:45,358 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20 states and 23 transitions. [2019-11-25 08:57:45,359 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-25 08:57:45,360 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20 states to 18 states and 21 transitions. [2019-11-25 08:57:45,360 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2019-11-25 08:57:45,360 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2019-11-25 08:57:45,360 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 21 transitions. [2019-11-25 08:57:45,360 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:57:45,360 INFO L688 BuchiCegarLoop]: Abstraction has 18 states and 21 transitions. [2019-11-25 08:57:45,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 21 transitions. [2019-11-25 08:57:45,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-11-25 08:57:45,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-25 08:57:45,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2019-11-25 08:57:45,366 INFO L711 BuchiCegarLoop]: Abstraction has 18 states and 21 transitions. [2019-11-25 08:57:45,366 INFO L591 BuchiCegarLoop]: Abstraction has 18 states and 21 transitions. [2019-11-25 08:57:45,367 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-25 08:57:45,367 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 21 transitions. [2019-11-25 08:57:45,371 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-25 08:57:45,371 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:57:45,371 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:57:45,372 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2019-11-25 08:57:45,372 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-11-25 08:57:45,373 INFO L794 eck$LassoCheckResult]: Stem: 191#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 184#L-1 havoc main_#res;havoc main_#t~nondet9, main_#t~malloc10.base, main_#t~malloc10.offset, main_#t~nondet11, main_#t~malloc12.base, main_#t~malloc12.offset, main_#t~ret13, main_~in_len~0, main_~in~0.base, main_~in~0.offset, main_~out_len~0, main_~out~0.base, main_~out~0.offset;main_~in_len~0 := main_#t~nondet9;havoc main_#t~nondet9; 185#L519 assume !(main_~in_len~0 < 1);call main_#t~malloc10.base, main_#t~malloc10.offset := #Ultimate.allocOnStack(main_~in_len~0);main_~in~0.base, main_~in~0.offset := main_#t~malloc10.base, main_#t~malloc10.offset;call write~int(0, main_~in~0.base, main_~in~0.offset + (main_~in_len~0 - 1), 1);main_~out_len~0 := main_#t~nondet11;havoc main_#t~nondet11; 196#L523 assume !(main_~out_len~0 < 1);call main_#t~malloc12.base, main_#t~malloc12.offset := #Ultimate.allocOnStack(main_~out_len~0);main_~out~0.base, main_~out~0.offset := main_#t~malloc12.base, main_#t~malloc12.offset;call write~int(0, main_~out~0.base, main_~out~0.offset + (main_~out_len~0 - 1), 1);strcspn_#in~s.base, strcspn_#in~s.offset, strcspn_#in~reject.base, strcspn_#in~reject.offset := main_~in~0.base, main_~in~0.offset, main_~out~0.base, main_~out~0.offset;havoc strcspn_#res;havoc strcspn_#t~mem4, strcspn_#t~mem5, strcspn_#t~pre3, strcspn_#t~mem6, strcspn_#t~pre7, strcspn_#t~pre2.base, strcspn_#t~pre2.offset, strcspn_#t~mem8, strcspn_~s.base, strcspn_~s.offset, strcspn_~reject.base, strcspn_~reject.offset, strcspn_~l~0, strcspn_~i~0;strcspn_~s.base, strcspn_~s.offset := strcspn_#in~s.base, strcspn_#in~s.offset;strcspn_~reject.base, strcspn_~reject.offset := strcspn_#in~reject.base, strcspn_#in~reject.offset;strcspn_~l~0 := 0;havoc strcspn_~i~0; 199#L510-4 call strcspn_#t~mem8 := read~int(strcspn_~s.base, strcspn_~s.offset, 1); 192#L510-1 assume !!(0 != strcspn_#t~mem8);havoc strcspn_#t~mem8;strcspn_~i~0 := 0; 193#L511-4 [2019-11-25 08:57:45,373 INFO L796 eck$LassoCheckResult]: Loop: 193#L511-4 call strcspn_#t~mem6 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 186#L511-1 assume !!(0 != strcspn_#t~mem6);havoc strcspn_#t~mem6;call strcspn_#t~mem4 := read~int(strcspn_~s.base, strcspn_~s.offset, 1);call strcspn_#t~mem5 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 187#L512 assume !(strcspn_#t~mem4 == strcspn_#t~mem5);havoc strcspn_#t~mem4;havoc strcspn_#t~mem5; 197#L511-3 strcspn_#t~pre3 := 1 + strcspn_~i~0;strcspn_~i~0 := 1 + strcspn_~i~0;havoc strcspn_#t~pre3; 193#L511-4 [2019-11-25 08:57:45,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:57:45,373 INFO L82 PathProgramCache]: Analyzing trace with hash 889571309, now seen corresponding path program 1 times [2019-11-25 08:57:45,373 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:57:45,374 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995757058] [2019-11-25 08:57:45,374 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:57:45,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:57:45,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:57:45,433 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:57:45,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:57:45,434 INFO L82 PathProgramCache]: Analyzing trace with hash 1698248, now seen corresponding path program 1 times [2019-11-25 08:57:45,434 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:57:45,434 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430820668] [2019-11-25 08:57:45,434 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:57:45,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:57:45,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:57:45,444 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:57:45,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:57:45,445 INFO L82 PathProgramCache]: Analyzing trace with hash 736222132, now seen corresponding path program 1 times [2019-11-25 08:57:45,445 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:57:45,445 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004883452] [2019-11-25 08:57:45,445 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:57:45,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:57:45,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:57:45,500 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:57:45,943 WARN L192 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 97 [2019-11-25 08:57:46,085 WARN L192 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2019-11-25 08:57:46,088 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:57:46,088 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:57:46,088 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:57:46,088 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:57:46,088 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:57:46,088 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:57:46,089 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:57:46,089 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:57:46,089 INFO L133 ssoRankerPreferences]: Filename of dumped script: strcspn.i_Iteration3_Lasso [2019-11-25 08:57:46,089 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:57:46,089 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:57:46,093 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:57:46,100 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:57:46,103 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:57:46,105 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:57:46,107 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:57:46,111 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:57:46,439 WARN L192 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 70 [2019-11-25 08:57:46,497 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:57:46,500 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:57:46,502 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:57:46,505 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:57:46,507 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:57:46,509 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:57:46,512 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:57:46,514 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:57:46,515 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:57:46,518 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:57:46,533 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:57:46,963 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:57:46,963 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a97cb40e-a93e-44ac-a90e-e2c6b003b058/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:57:46,979 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:57:46,981 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:57:46,981 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:57:46,981 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:57:46,981 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:57:46,981 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:57:46,982 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:57:46,982 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:57:46,986 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a97cb40e-a93e-44ac-a90e-e2c6b003b058/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 [2019-11-25 08:57:46,994 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:57:46,996 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:57:46,996 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:57:46,996 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:57:46,996 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:57:46,996 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:57:46,997 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:57:46,997 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:57:47,002 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a97cb40e-a93e-44ac-a90e-e2c6b003b058/bin/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:57:47,019 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:57:47,021 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:57:47,021 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:57:47,021 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:57:47,021 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:57:47,023 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:57:47,023 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:57:47,027 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a97cb40e-a93e-44ac-a90e-e2c6b003b058/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:57:47,042 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:57:47,044 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:57:47,044 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:57:47,044 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:57:47,044 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:57:47,044 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:57:47,045 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:57:47,045 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:57:47,046 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a97cb40e-a93e-44ac-a90e-e2c6b003b058/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:57:47,056 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:57:47,057 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:57:47,057 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:57:47,057 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:57:47,058 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:57:47,060 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:57:47,060 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-25 08:57:47,066 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a97cb40e-a93e-44ac-a90e-e2c6b003b058/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:57:47,074 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:57:47,075 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:57:47,075 INFO L203 nArgumentSynthesizer]: 2 stem disjuncts [2019-11-25 08:57:47,075 INFO L204 nArgumentSynthesizer]: 4 loop disjuncts [2019-11-25 08:57:47,075 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:57:47,099 INFO L401 nArgumentSynthesizer]: We have 56 Motzkin's Theorem applications. [2019-11-25 08:57:47,099 INFO L402 nArgumentSynthesizer]: A total of 8 supporting invariants were added. [2019-11-25 08:57:47,136 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a97cb40e-a93e-44ac-a90e-e2c6b003b058/bin/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:57:47,141 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:57:47,143 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:57:47,143 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:57:47,143 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:57:47,143 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:57:47,147 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:57:47,147 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-25 08:57:47,154 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a97cb40e-a93e-44ac-a90e-e2c6b003b058/bin/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:57:47,159 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:57:47,160 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:57:47,160 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:57:47,160 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:57:47,160 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:57:47,167 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:57:47,167 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-25 08:57:47,182 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a97cb40e-a93e-44ac-a90e-e2c6b003b058/bin/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:57:47,194 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 Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:57:47,196 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:57:47,196 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:57:47,197 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:57:47,197 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:57:47,203 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:57:47,203 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-25 08:57:47,218 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:57:47,250 INFO L443 ModelExtractionUtils]: Simplification made 18 calls to the SMT solver. [2019-11-25 08:57:47,250 INFO L444 ModelExtractionUtils]: 16 out of 28 variables were initially zero. Simplification set additionally 8 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a97cb40e-a93e-44ac-a90e-e2c6b003b058/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) [2019-11-25 08:57:47,262 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:57:47,269 INFO L438 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2019-11-25 08:57:47,270 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:57:47,270 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_strcspn_~i~0, v_rep(select #length ULTIMATE.start_main_#t~malloc12.base)_2) = -1*ULTIMATE.start_strcspn_~i~0 + 1*v_rep(select #length ULTIMATE.start_main_#t~malloc12.base)_2 Supporting invariants [1*ULTIMATE.start_strcspn_~reject.offset >= 0] [2019-11-25 08:57:47,332 INFO L297 tatePredicateManager]: 15 out of 17 supporting invariants were superfluous and have been removed [2019-11-25 08:57:47,344 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2019-11-25 08:57:47,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:57:47,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:57:47,392 INFO L255 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-25 08:57:47,393 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:57:47,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:57:47,418 INFO L255 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-25 08:57:47,419 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:57:47,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:57:47,438 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 2 loop predicates [2019-11-25 08:57:47,438 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 21 transitions. cyclomatic complexity: 5 Second operand 4 states. [2019-11-25 08:57:47,484 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 21 transitions. cyclomatic complexity: 5. Second operand 4 states. Result 45 states and 51 transitions. Complement of second has 6 states. [2019-11-25 08:57:47,485 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-25 08:57:47,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-25 08:57:47,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2019-11-25 08:57:47,486 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 6 letters. Loop has 4 letters. [2019-11-25 08:57:47,486 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:57:47,487 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 10 letters. Loop has 4 letters. [2019-11-25 08:57:47,487 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:57:47,487 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 6 letters. Loop has 8 letters. [2019-11-25 08:57:47,487 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:57:47,487 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 45 states and 51 transitions. [2019-11-25 08:57:47,489 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-25 08:57:47,490 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 45 states to 29 states and 33 transitions. [2019-11-25 08:57:47,490 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2019-11-25 08:57:47,490 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2019-11-25 08:57:47,490 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 33 transitions. [2019-11-25 08:57:47,490 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:57:47,490 INFO L688 BuchiCegarLoop]: Abstraction has 29 states and 33 transitions. [2019-11-25 08:57:47,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states and 33 transitions. [2019-11-25 08:57:47,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 24. [2019-11-25 08:57:47,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-11-25 08:57:47,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2019-11-25 08:57:47,493 INFO L711 BuchiCegarLoop]: Abstraction has 24 states and 27 transitions. [2019-11-25 08:57:47,493 INFO L591 BuchiCegarLoop]: Abstraction has 24 states and 27 transitions. [2019-11-25 08:57:47,493 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-25 08:57:47,493 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 27 transitions. [2019-11-25 08:57:47,496 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-25 08:57:47,496 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:57:47,497 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:57:47,497 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:57:47,497 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-11-25 08:57:47,498 INFO L794 eck$LassoCheckResult]: Stem: 379#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 373#L-1 havoc main_#res;havoc main_#t~nondet9, main_#t~malloc10.base, main_#t~malloc10.offset, main_#t~nondet11, main_#t~malloc12.base, main_#t~malloc12.offset, main_#t~ret13, main_~in_len~0, main_~in~0.base, main_~in~0.offset, main_~out_len~0, main_~out~0.base, main_~out~0.offset;main_~in_len~0 := main_#t~nondet9;havoc main_#t~nondet9; 374#L519 assume !(main_~in_len~0 < 1);call main_#t~malloc10.base, main_#t~malloc10.offset := #Ultimate.allocOnStack(main_~in_len~0);main_~in~0.base, main_~in~0.offset := main_#t~malloc10.base, main_#t~malloc10.offset;call write~int(0, main_~in~0.base, main_~in~0.offset + (main_~in_len~0 - 1), 1);main_~out_len~0 := main_#t~nondet11;havoc main_#t~nondet11; 384#L523 assume !(main_~out_len~0 < 1);call main_#t~malloc12.base, main_#t~malloc12.offset := #Ultimate.allocOnStack(main_~out_len~0);main_~out~0.base, main_~out~0.offset := main_#t~malloc12.base, main_#t~malloc12.offset;call write~int(0, main_~out~0.base, main_~out~0.offset + (main_~out_len~0 - 1), 1);strcspn_#in~s.base, strcspn_#in~s.offset, strcspn_#in~reject.base, strcspn_#in~reject.offset := main_~in~0.base, main_~in~0.offset, main_~out~0.base, main_~out~0.offset;havoc strcspn_#res;havoc strcspn_#t~mem4, strcspn_#t~mem5, strcspn_#t~pre3, strcspn_#t~mem6, strcspn_#t~pre7, strcspn_#t~pre2.base, strcspn_#t~pre2.offset, strcspn_#t~mem8, strcspn_~s.base, strcspn_~s.offset, strcspn_~reject.base, strcspn_~reject.offset, strcspn_~l~0, strcspn_~i~0;strcspn_~s.base, strcspn_~s.offset := strcspn_#in~s.base, strcspn_#in~s.offset;strcspn_~reject.base, strcspn_~reject.offset := strcspn_#in~reject.base, strcspn_#in~reject.offset;strcspn_~l~0 := 0;havoc strcspn_~i~0; 387#L510-4 call strcspn_#t~mem8 := read~int(strcspn_~s.base, strcspn_~s.offset, 1); 382#L510-1 assume !!(0 != strcspn_#t~mem8);havoc strcspn_#t~mem8;strcspn_~i~0 := 0; 383#L511-4 call strcspn_#t~mem6 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 396#L511-1 assume !(0 != strcspn_#t~mem6);havoc strcspn_#t~mem6; 395#L511-5 strcspn_#t~pre7 := 1 + strcspn_~l~0;strcspn_~l~0 := 1 + strcspn_~l~0;havoc strcspn_#t~pre7; 390#L510-3 strcspn_#t~pre2.base, strcspn_#t~pre2.offset := strcspn_~s.base, 1 + strcspn_~s.offset;strcspn_~s.base, strcspn_~s.offset := strcspn_~s.base, 1 + strcspn_~s.offset;havoc strcspn_#t~pre2.base, strcspn_#t~pre2.offset; 391#L510-4 call strcspn_#t~mem8 := read~int(strcspn_~s.base, strcspn_~s.offset, 1); 380#L510-1 assume !!(0 != strcspn_#t~mem8);havoc strcspn_#t~mem8;strcspn_~i~0 := 0; 381#L511-4 [2019-11-25 08:57:47,498 INFO L796 eck$LassoCheckResult]: Loop: 381#L511-4 call strcspn_#t~mem6 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 375#L511-1 assume !!(0 != strcspn_#t~mem6);havoc strcspn_#t~mem6;call strcspn_#t~mem4 := read~int(strcspn_~s.base, strcspn_~s.offset, 1);call strcspn_#t~mem5 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 376#L512 assume !(strcspn_#t~mem4 == strcspn_#t~mem5);havoc strcspn_#t~mem4;havoc strcspn_#t~mem5; 385#L511-3 strcspn_#t~pre3 := 1 + strcspn_~i~0;strcspn_~i~0 := 1 + strcspn_~i~0;havoc strcspn_#t~pre3; 381#L511-4 [2019-11-25 08:57:47,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:57:47,498 INFO L82 PathProgramCache]: Analyzing trace with hash -1161797001, now seen corresponding path program 2 times [2019-11-25 08:57:47,498 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:57:47,498 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321176364] [2019-11-25 08:57:47,498 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:57:47,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:57:47,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:57:47,564 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:57:47,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:57:47,565 INFO L82 PathProgramCache]: Analyzing trace with hash 1698248, now seen corresponding path program 2 times [2019-11-25 08:57:47,565 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:57:47,565 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111948297] [2019-11-25 08:57:47,565 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:57:47,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:57:47,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:57:47,584 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:57:47,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:57:47,584 INFO L82 PathProgramCache]: Analyzing trace with hash -967302850, now seen corresponding path program 1 times [2019-11-25 08:57:47,584 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:57:47,584 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332726274] [2019-11-25 08:57:47,584 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:57:47,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:57:47,776 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:57:47,776 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332726274] [2019-11-25 08:57:47,776 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [201082287] [2019-11-25 08:57:47,776 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a97cb40e-a93e-44ac-a90e-e2c6b003b058/bin/uautomizer/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:57:47,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:57:47,837 INFO L255 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-25 08:57:47,838 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:57:47,908 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-11-25 08:57:47,909 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:57:47,911 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:57:47,911 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-25 08:57:47,911 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2019-11-25 08:57:47,922 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:57:47,922 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:57:47,922 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2019-11-25 08:57:47,922 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725841717] [2019-11-25 08:57:47,972 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:57:47,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-25 08:57:47,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2019-11-25 08:57:47,973 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. cyclomatic complexity: 6 Second operand 13 states. [2019-11-25 08:57:48,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:57:48,126 INFO L93 Difference]: Finished difference Result 46 states and 51 transitions. [2019-11-25 08:57:48,127 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-25 08:57:48,127 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 46 states and 51 transitions. [2019-11-25 08:57:48,129 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-25 08:57:48,130 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 46 states to 36 states and 39 transitions. [2019-11-25 08:57:48,130 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2019-11-25 08:57:48,130 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2019-11-25 08:57:48,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 39 transitions. [2019-11-25 08:57:48,130 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:57:48,130 INFO L688 BuchiCegarLoop]: Abstraction has 36 states and 39 transitions. [2019-11-25 08:57:48,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states and 39 transitions. [2019-11-25 08:57:48,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 27. [2019-11-25 08:57:48,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-11-25 08:57:48,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2019-11-25 08:57:48,133 INFO L711 BuchiCegarLoop]: Abstraction has 27 states and 30 transitions. [2019-11-25 08:57:48,133 INFO L591 BuchiCegarLoop]: Abstraction has 27 states and 30 transitions. [2019-11-25 08:57:48,133 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-11-25 08:57:48,134 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27 states and 30 transitions. [2019-11-25 08:57:48,134 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-25 08:57:48,134 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:57:48,134 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:57:48,135 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:57:48,135 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-11-25 08:57:48,135 INFO L794 eck$LassoCheckResult]: Stem: 519#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 513#L-1 havoc main_#res;havoc main_#t~nondet9, main_#t~malloc10.base, main_#t~malloc10.offset, main_#t~nondet11, main_#t~malloc12.base, main_#t~malloc12.offset, main_#t~ret13, main_~in_len~0, main_~in~0.base, main_~in~0.offset, main_~out_len~0, main_~out~0.base, main_~out~0.offset;main_~in_len~0 := main_#t~nondet9;havoc main_#t~nondet9; 514#L519 assume !(main_~in_len~0 < 1);call main_#t~malloc10.base, main_#t~malloc10.offset := #Ultimate.allocOnStack(main_~in_len~0);main_~in~0.base, main_~in~0.offset := main_#t~malloc10.base, main_#t~malloc10.offset;call write~int(0, main_~in~0.base, main_~in~0.offset + (main_~in_len~0 - 1), 1);main_~out_len~0 := main_#t~nondet11;havoc main_#t~nondet11; 524#L523 assume !(main_~out_len~0 < 1);call main_#t~malloc12.base, main_#t~malloc12.offset := #Ultimate.allocOnStack(main_~out_len~0);main_~out~0.base, main_~out~0.offset := main_#t~malloc12.base, main_#t~malloc12.offset;call write~int(0, main_~out~0.base, main_~out~0.offset + (main_~out_len~0 - 1), 1);strcspn_#in~s.base, strcspn_#in~s.offset, strcspn_#in~reject.base, strcspn_#in~reject.offset := main_~in~0.base, main_~in~0.offset, main_~out~0.base, main_~out~0.offset;havoc strcspn_#res;havoc strcspn_#t~mem4, strcspn_#t~mem5, strcspn_#t~pre3, strcspn_#t~mem6, strcspn_#t~pre7, strcspn_#t~pre2.base, strcspn_#t~pre2.offset, strcspn_#t~mem8, strcspn_~s.base, strcspn_~s.offset, strcspn_~reject.base, strcspn_~reject.offset, strcspn_~l~0, strcspn_~i~0;strcspn_~s.base, strcspn_~s.offset := strcspn_#in~s.base, strcspn_#in~s.offset;strcspn_~reject.base, strcspn_~reject.offset := strcspn_#in~reject.base, strcspn_#in~reject.offset;strcspn_~l~0 := 0;havoc strcspn_~i~0; 528#L510-4 call strcspn_#t~mem8 := read~int(strcspn_~s.base, strcspn_~s.offset, 1); 532#L510-1 assume !!(0 != strcspn_#t~mem8);havoc strcspn_#t~mem8;strcspn_~i~0 := 0; 529#L511-4 call strcspn_#t~mem6 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 517#L511-1 assume !!(0 != strcspn_#t~mem6);havoc strcspn_#t~mem6;call strcspn_#t~mem4 := read~int(strcspn_~s.base, strcspn_~s.offset, 1);call strcspn_#t~mem5 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 518#L512 assume !(strcspn_#t~mem4 == strcspn_#t~mem5);havoc strcspn_#t~mem4;havoc strcspn_#t~mem5; 526#L511-3 strcspn_#t~pre3 := 1 + strcspn_~i~0;strcspn_~i~0 := 1 + strcspn_~i~0;havoc strcspn_#t~pre3; 527#L511-4 call strcspn_#t~mem6 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 534#L511-1 assume !(0 != strcspn_#t~mem6);havoc strcspn_#t~mem6; 533#L511-5 strcspn_#t~pre7 := 1 + strcspn_~l~0;strcspn_~l~0 := 1 + strcspn_~l~0;havoc strcspn_#t~pre7; 530#L510-3 strcspn_#t~pre2.base, strcspn_#t~pre2.offset := strcspn_~s.base, 1 + strcspn_~s.offset;strcspn_~s.base, strcspn_~s.offset := strcspn_~s.base, 1 + strcspn_~s.offset;havoc strcspn_#t~pre2.base, strcspn_#t~pre2.offset; 531#L510-4 call strcspn_#t~mem8 := read~int(strcspn_~s.base, strcspn_~s.offset, 1); 520#L510-1 assume !!(0 != strcspn_#t~mem8);havoc strcspn_#t~mem8;strcspn_~i~0 := 0; 521#L511-4 [2019-11-25 08:57:48,135 INFO L796 eck$LassoCheckResult]: Loop: 521#L511-4 call strcspn_#t~mem6 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 515#L511-1 assume !!(0 != strcspn_#t~mem6);havoc strcspn_#t~mem6;call strcspn_#t~mem4 := read~int(strcspn_~s.base, strcspn_~s.offset, 1);call strcspn_#t~mem5 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 516#L512 assume !(strcspn_#t~mem4 == strcspn_#t~mem5);havoc strcspn_#t~mem4;havoc strcspn_#t~mem5; 525#L511-3 strcspn_#t~pre3 := 1 + strcspn_~i~0;strcspn_~i~0 := 1 + strcspn_~i~0;havoc strcspn_#t~pre3; 521#L511-4 [2019-11-25 08:57:48,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:57:48,136 INFO L82 PathProgramCache]: Analyzing trace with hash 1375356158, now seen corresponding path program 2 times [2019-11-25 08:57:48,136 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:57:48,136 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623315980] [2019-11-25 08:57:48,136 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:57:48,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:57:48,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:57:48,187 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:57:48,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:57:48,187 INFO L82 PathProgramCache]: Analyzing trace with hash 1698248, now seen corresponding path program 3 times [2019-11-25 08:57:48,188 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:57:48,188 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994031184] [2019-11-25 08:57:48,188 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:57:48,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:57:48,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:57:48,201 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:57:48,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:57:48,203 INFO L82 PathProgramCache]: Analyzing trace with hash -1858115515, now seen corresponding path program 3 times [2019-11-25 08:57:48,204 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:57:48,204 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463944339] [2019-11-25 08:57:48,204 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:57:48,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:57:48,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:57:48,235 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:57:48,880 WARN L192 SmtUtils]: Spent 596.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 138 [2019-11-25 08:57:49,033 WARN L192 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2019-11-25 08:57:49,038 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:57:49,038 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:57:49,038 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:57:49,038 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:57:49,038 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:57:49,039 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:57:49,039 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:57:49,039 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:57:49,039 INFO L133 ssoRankerPreferences]: Filename of dumped script: strcspn.i_Iteration5_Lasso [2019-11-25 08:57:49,039 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:57:49,039 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:57:49,042 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:57:49,051 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:57:49,053 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:57:49,058 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:57:49,059 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:57:49,061 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:57:49,064 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:57:49,066 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:57:49,068 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:57:49,543 WARN L192 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 87 [2019-11-25 08:57:49,648 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:57:49,650 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:57:49,652 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:57:49,655 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:57:49,656 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:57:49,658 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:57:49,659 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:57:49,667 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:57:49,669 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:57:49,671 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:57:49,898 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2019-11-25 08:57:50,379 WARN L192 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 36 [2019-11-25 08:57:50,412 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:57:50,412 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a97cb40e-a93e-44ac-a90e-e2c6b003b058/bin/uautomizer/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:57:50,426 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:57:50,428 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:57:50,428 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:57:50,428 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:57:50,428 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:57:50,429 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:57:50,429 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-25 08:57:50,434 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a97cb40e-a93e-44ac-a90e-e2c6b003b058/bin/uautomizer/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:57:50,439 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:57:50,441 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:57:50,441 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:57:50,441 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:57:50,441 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:57:50,441 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:57:50,442 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:57:50,442 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:57:50,443 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a97cb40e-a93e-44ac-a90e-e2c6b003b058/bin/uautomizer/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:57:50,448 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:57:50,449 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:57:50,449 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:57:50,449 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:57:50,449 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:57:50,449 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:57:50,449 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:57:50,450 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:57:50,451 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a97cb40e-a93e-44ac-a90e-e2c6b003b058/bin/uautomizer/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:57:50,455 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:57:50,456 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:57:50,457 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:57:50,457 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:57:50,457 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:57:50,457 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:57:50,457 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:57:50,457 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:57:50,458 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a97cb40e-a93e-44ac-a90e-e2c6b003b058/bin/uautomizer/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:57:50,462 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:57:50,463 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:57:50,463 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:57:50,463 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:57:50,463 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:57:50,463 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:57:50,464 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:57:50,464 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:57:50,465 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a97cb40e-a93e-44ac-a90e-e2c6b003b058/bin/uautomizer/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:57:50,482 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:57:50,484 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:57:50,484 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:57:50,484 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:57:50,484 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:57:50,485 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:57:50,486 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:57:50,489 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a97cb40e-a93e-44ac-a90e-e2c6b003b058/bin/uautomizer/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:57:50,496 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:57:50,497 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:57:50,497 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:57:50,497 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:57:50,497 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:57:50,500 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:57:50,500 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:57:50,504 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a97cb40e-a93e-44ac-a90e-e2c6b003b058/bin/uautomizer/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:57:50,511 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:57:50,512 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:57:50,512 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:57:50,512 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:57:50,512 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:57:50,512 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:57:50,513 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:57:50,513 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:57:50,514 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a97cb40e-a93e-44ac-a90e-e2c6b003b058/bin/uautomizer/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:57:50,522 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:57:50,523 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:57:50,524 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:57:50,524 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:57:50,524 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:57:50,527 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:57:50,527 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-25 08:57:50,530 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a97cb40e-a93e-44ac-a90e-e2c6b003b058/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) [2019-11-25 08:57:50,536 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:57:50,537 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:57:50,537 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:57:50,537 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:57:50,537 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:57:50,539 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:57:50,539 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:57:50,543 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a97cb40e-a93e-44ac-a90e-e2c6b003b058/bin/uautomizer/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:57:50,548 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:57:50,550 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:57:50,550 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:57:50,550 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:57:50,550 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:57:50,553 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:57:50,553 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:57:50,559 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a97cb40e-a93e-44ac-a90e-e2c6b003b058/bin/uautomizer/z3 Starting monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:57:50,566 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:57:50,568 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:57:50,568 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:57:50,568 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:57:50,568 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:57:50,576 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:57:50,576 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:57:50,590 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a97cb40e-a93e-44ac-a90e-e2c6b003b058/bin/uautomizer/z3 Starting monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:57:50,598 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:57:50,599 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:57:50,599 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:57:50,599 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:57:50,599 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:57:50,606 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:57:50,606 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-25 08:57:50,609 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a97cb40e-a93e-44ac-a90e-e2c6b003b058/bin/uautomizer/z3 Starting monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:57:50,613 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:57:50,614 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:57:50,614 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:57:50,614 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:57:50,614 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:57:50,616 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:57:50,616 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-25 08:57:50,620 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a97cb40e-a93e-44ac-a90e-e2c6b003b058/bin/uautomizer/z3 Starting monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:57:50,624 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:57:50,626 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:57:50,626 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:57:50,626 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:57:50,626 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:57:50,643 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:57:50,644 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-25 08:57:50,662 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:57:50,700 INFO L443 ModelExtractionUtils]: Simplification made 12 calls to the SMT solver. [2019-11-25 08:57:50,700 INFO L444 ModelExtractionUtils]: 21 out of 49 variables were initially zero. Simplification set additionally 25 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a97cb40e-a93e-44ac-a90e-e2c6b003b058/bin/uautomizer/z3 Starting monitored process 35 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 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:57:50,704 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-25 08:57:50,706 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2019-11-25 08:57:50,707 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:57:50,707 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select #length ULTIMATE.start_strcspn_~reject.base)_3, ULTIMATE.start_strcspn_~i~0) = 3*v_rep(select #length ULTIMATE.start_strcspn_~reject.base)_3 - 2*ULTIMATE.start_strcspn_~i~0 Supporting invariants [] [2019-11-25 08:57:50,814 INFO L297 tatePredicateManager]: 34 out of 35 supporting invariants were superfluous and have been removed [2019-11-25 08:57:50,816 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2019-11-25 08:57:50,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:57:50,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:57:50,875 INFO L255 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 22 conjunts are in the unsatisfiable core [2019-11-25 08:57:50,876 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:57:50,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:57:50,943 INFO L255 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-25 08:57:50,943 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:57:50,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:57:50,985 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.4 stem predicates 3 loop predicates [2019-11-25 08:57:50,985 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27 states and 30 transitions. cyclomatic complexity: 6 Second operand 7 states. [2019-11-25 08:57:51,025 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 27 states and 30 transitions. cyclomatic complexity: 6. Second operand 7 states. Result 27 states and 30 transitions. Complement of second has 5 states. [2019-11-25 08:57:51,026 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 3 stem states 0 non-accepting loop states 1 accepting loop states [2019-11-25 08:57:51,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-11-25 08:57:51,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 6 transitions. [2019-11-25 08:57:51,026 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 16 letters. Loop has 4 letters. [2019-11-25 08:57:51,027 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:57:51,027 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-25 08:57:51,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:57:51,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:57:51,063 INFO L255 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 22 conjunts are in the unsatisfiable core [2019-11-25 08:57:51,064 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:57:51,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:57:51,116 INFO L255 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-25 08:57:51,117 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:57:51,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:57:51,151 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.4 stem predicates 3 loop predicates [2019-11-25 08:57:51,151 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27 states and 30 transitions. cyclomatic complexity: 6 Second operand 7 states. [2019-11-25 08:57:51,194 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 27 states and 30 transitions. cyclomatic complexity: 6. Second operand 7 states. Result 27 states and 30 transitions. Complement of second has 5 states. [2019-11-25 08:57:51,198 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 3 stem states 0 non-accepting loop states 1 accepting loop states [2019-11-25 08:57:51,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-11-25 08:57:51,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 6 transitions. [2019-11-25 08:57:51,198 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 16 letters. Loop has 4 letters. [2019-11-25 08:57:51,198 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:57:51,199 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-25 08:57:51,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:57:51,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:57:51,237 INFO L255 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 22 conjunts are in the unsatisfiable core [2019-11-25 08:57:51,238 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:57:51,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:57:51,293 INFO L255 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-25 08:57:51,293 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:57:51,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:57:51,326 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.4 stem predicates 3 loop predicates [2019-11-25 08:57:51,326 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27 states and 30 transitions. cyclomatic complexity: 6 Second operand 7 states. [2019-11-25 08:57:51,459 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 27 states and 30 transitions. cyclomatic complexity: 6. Second operand 7 states. Result 56 states and 63 transitions. Complement of second has 11 states. [2019-11-25 08:57:51,460 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 4 stem states 2 non-accepting loop states 2 accepting loop states [2019-11-25 08:57:51,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-11-25 08:57:51,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 40 transitions. [2019-11-25 08:57:51,460 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 40 transitions. Stem has 16 letters. Loop has 4 letters. [2019-11-25 08:57:51,460 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:57:51,461 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 40 transitions. Stem has 20 letters. Loop has 4 letters. [2019-11-25 08:57:51,461 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:57:51,461 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 40 transitions. Stem has 16 letters. Loop has 8 letters. [2019-11-25 08:57:51,461 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:57:51,461 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 56 states and 63 transitions. [2019-11-25 08:57:51,465 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-25 08:57:51,465 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 56 states to 42 states and 46 transitions. [2019-11-25 08:57:51,466 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2019-11-25 08:57:51,466 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2019-11-25 08:57:51,466 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 46 transitions. [2019-11-25 08:57:51,466 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:57:51,466 INFO L688 BuchiCegarLoop]: Abstraction has 42 states and 46 transitions. [2019-11-25 08:57:51,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states and 46 transitions. [2019-11-25 08:57:51,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 37. [2019-11-25 08:57:51,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-11-25 08:57:51,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2019-11-25 08:57:51,470 INFO L711 BuchiCegarLoop]: Abstraction has 37 states and 41 transitions. [2019-11-25 08:57:51,470 INFO L591 BuchiCegarLoop]: Abstraction has 37 states and 41 transitions. [2019-11-25 08:57:51,470 INFO L424 BuchiCegarLoop]: ======== Iteration 6============ [2019-11-25 08:57:51,470 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 37 states and 41 transitions. [2019-11-25 08:57:51,472 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-25 08:57:51,472 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:57:51,472 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:57:51,473 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2019-11-25 08:57:51,473 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-11-25 08:57:51,473 INFO L794 eck$LassoCheckResult]: Stem: 1050#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 1044#L-1 havoc main_#res;havoc main_#t~nondet9, main_#t~malloc10.base, main_#t~malloc10.offset, main_#t~nondet11, main_#t~malloc12.base, main_#t~malloc12.offset, main_#t~ret13, main_~in_len~0, main_~in~0.base, main_~in~0.offset, main_~out_len~0, main_~out~0.base, main_~out~0.offset;main_~in_len~0 := main_#t~nondet9;havoc main_#t~nondet9; 1045#L519 assume !(main_~in_len~0 < 1);call main_#t~malloc10.base, main_#t~malloc10.offset := #Ultimate.allocOnStack(main_~in_len~0);main_~in~0.base, main_~in~0.offset := main_#t~malloc10.base, main_#t~malloc10.offset;call write~int(0, main_~in~0.base, main_~in~0.offset + (main_~in_len~0 - 1), 1);main_~out_len~0 := main_#t~nondet11;havoc main_#t~nondet11; 1055#L523 assume !(main_~out_len~0 < 1);call main_#t~malloc12.base, main_#t~malloc12.offset := #Ultimate.allocOnStack(main_~out_len~0);main_~out~0.base, main_~out~0.offset := main_#t~malloc12.base, main_#t~malloc12.offset;call write~int(0, main_~out~0.base, main_~out~0.offset + (main_~out_len~0 - 1), 1);strcspn_#in~s.base, strcspn_#in~s.offset, strcspn_#in~reject.base, strcspn_#in~reject.offset := main_~in~0.base, main_~in~0.offset, main_~out~0.base, main_~out~0.offset;havoc strcspn_#res;havoc strcspn_#t~mem4, strcspn_#t~mem5, strcspn_#t~pre3, strcspn_#t~mem6, strcspn_#t~pre7, strcspn_#t~pre2.base, strcspn_#t~pre2.offset, strcspn_#t~mem8, strcspn_~s.base, strcspn_~s.offset, strcspn_~reject.base, strcspn_~reject.offset, strcspn_~l~0, strcspn_~i~0;strcspn_~s.base, strcspn_~s.offset := strcspn_#in~s.base, strcspn_#in~s.offset;strcspn_~reject.base, strcspn_~reject.offset := strcspn_#in~reject.base, strcspn_#in~reject.offset;strcspn_~l~0 := 0;havoc strcspn_~i~0; 1062#L510-4 call strcspn_#t~mem8 := read~int(strcspn_~s.base, strcspn_~s.offset, 1); 1063#L510-1 assume !!(0 != strcspn_#t~mem8);havoc strcspn_#t~mem8;strcspn_~i~0 := 0; 1074#L511-4 call strcspn_#t~mem6 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 1071#L511-1 assume !!(0 != strcspn_#t~mem6);havoc strcspn_#t~mem6;call strcspn_#t~mem4 := read~int(strcspn_~s.base, strcspn_~s.offset, 1);call strcspn_#t~mem5 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 1073#L512 assume !(strcspn_#t~mem4 == strcspn_#t~mem5);havoc strcspn_#t~mem4;havoc strcspn_#t~mem5; 1072#L511-3 strcspn_#t~pre3 := 1 + strcspn_~i~0;strcspn_~i~0 := 1 + strcspn_~i~0;havoc strcspn_#t~pre3; 1070#L511-4 call strcspn_#t~mem6 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 1069#L511-1 assume !(0 != strcspn_#t~mem6);havoc strcspn_#t~mem6; 1068#L511-5 strcspn_#t~pre7 := 1 + strcspn_~l~0;strcspn_~l~0 := 1 + strcspn_~l~0;havoc strcspn_#t~pre7; 1059#L510-3 strcspn_#t~pre2.base, strcspn_#t~pre2.offset := strcspn_~s.base, 1 + strcspn_~s.offset;strcspn_~s.base, strcspn_~s.offset := strcspn_~s.base, 1 + strcspn_~s.offset;havoc strcspn_#t~pre2.base, strcspn_#t~pre2.offset; 1060#L510-4 call strcspn_#t~mem8 := read~int(strcspn_~s.base, strcspn_~s.offset, 1); 1064#L510-1 assume !!(0 != strcspn_#t~mem8);havoc strcspn_#t~mem8;strcspn_~i~0 := 0; 1061#L511-4 call strcspn_#t~mem6 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 1048#L511-1 assume !!(0 != strcspn_#t~mem6);havoc strcspn_#t~mem6;call strcspn_#t~mem4 := read~int(strcspn_~s.base, strcspn_~s.offset, 1);call strcspn_#t~mem5 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 1049#L512 assume !(strcspn_#t~mem4 == strcspn_#t~mem5);havoc strcspn_#t~mem4;havoc strcspn_#t~mem5; 1057#L511-3 strcspn_#t~pre3 := 1 + strcspn_~i~0;strcspn_~i~0 := 1 + strcspn_~i~0;havoc strcspn_#t~pre3; 1058#L511-4 call strcspn_#t~mem6 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 1075#L511-1 assume !(0 != strcspn_#t~mem6);havoc strcspn_#t~mem6; 1065#L511-5 strcspn_#t~pre7 := 1 + strcspn_~l~0;strcspn_~l~0 := 1 + strcspn_~l~0;havoc strcspn_#t~pre7; 1066#L510-3 strcspn_#t~pre2.base, strcspn_#t~pre2.offset := strcspn_~s.base, 1 + strcspn_~s.offset;strcspn_~s.base, strcspn_~s.offset := strcspn_~s.base, 1 + strcspn_~s.offset;havoc strcspn_#t~pre2.base, strcspn_#t~pre2.offset; 1067#L510-4 call strcspn_#t~mem8 := read~int(strcspn_~s.base, strcspn_~s.offset, 1); 1051#L510-1 assume !!(0 != strcspn_#t~mem8);havoc strcspn_#t~mem8;strcspn_~i~0 := 0; 1052#L511-4 [2019-11-25 08:57:51,473 INFO L796 eck$LassoCheckResult]: Loop: 1052#L511-4 call strcspn_#t~mem6 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 1046#L511-1 assume !!(0 != strcspn_#t~mem6);havoc strcspn_#t~mem6;call strcspn_#t~mem4 := read~int(strcspn_~s.base, strcspn_~s.offset, 1);call strcspn_#t~mem5 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 1047#L512 assume !(strcspn_#t~mem4 == strcspn_#t~mem5);havoc strcspn_#t~mem4;havoc strcspn_#t~mem5; 1056#L511-3 strcspn_#t~pre3 := 1 + strcspn_~i~0;strcspn_~i~0 := 1 + strcspn_~i~0;havoc strcspn_#t~pre3; 1052#L511-4 [2019-11-25 08:57:51,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:57:51,473 INFO L82 PathProgramCache]: Analyzing trace with hash 1550213327, now seen corresponding path program 4 times [2019-11-25 08:57:51,474 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:57:51,474 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623732409] [2019-11-25 08:57:51,474 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:57:51,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:57:51,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:57:51,522 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:57:51,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:57:51,525 INFO L82 PathProgramCache]: Analyzing trace with hash 1698248, now seen corresponding path program 4 times [2019-11-25 08:57:51,526 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:57:51,526 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683844661] [2019-11-25 08:57:51,526 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:57:51,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:57:51,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:57:51,538 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:57:51,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:57:51,541 INFO L82 PathProgramCache]: Analyzing trace with hash 229061526, now seen corresponding path program 5 times [2019-11-25 08:57:51,542 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:57:51,542 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546928936] [2019-11-25 08:57:51,542 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:57:51,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:57:51,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:57:51,598 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:57:52,395 WARN L192 SmtUtils]: Spent 740.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 167 [2019-11-25 08:57:52,552 WARN L192 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2019-11-25 08:57:52,553 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:57:52,553 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:57:52,553 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:57:52,553 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:57:52,554 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:57:52,554 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:57:52,554 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:57:52,554 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:57:52,554 INFO L133 ssoRankerPreferences]: Filename of dumped script: strcspn.i_Iteration6_Lasso [2019-11-25 08:57:52,554 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:57:52,554 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:57:52,556 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:57:52,568 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:57:52,570 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:57:52,579 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:57:52,581 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:57:52,583 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:57:52,585 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:57:52,586 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:57:52,588 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:57:52,589 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:57:52,591 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:57:52,595 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:57:52,597 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:57:53,004 WARN L192 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 88 [2019-11-25 08:57:53,102 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:57:53,104 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:57:53,105 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:57:53,107 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:57:53,108 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:57:53,344 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-11-25 08:57:54,570 WARN L192 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 97 DAG size of output: 69 [2019-11-25 08:57:54,640 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:57:54,640 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a97cb40e-a93e-44ac-a90e-e2c6b003b058/bin/uautomizer/z3 Starting monitored process 36 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 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:57:54,644 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:57:54,645 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:57:54,645 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:57:54,645 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:57:54,645 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:57:54,646 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:57:54,646 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-25 08:57:54,648 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a97cb40e-a93e-44ac-a90e-e2c6b003b058/bin/uautomizer/z3 Starting monitored process 37 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 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:57:54,652 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:57:54,654 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:57:54,654 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:57:54,654 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:57:54,654 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:57:54,654 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:57:54,654 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:57:54,654 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:57:54,655 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a97cb40e-a93e-44ac-a90e-e2c6b003b058/bin/uautomizer/z3 Starting monitored process 38 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 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:57:54,659 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:57:54,660 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:57:54,660 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:57:54,661 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:57:54,661 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:57:54,661 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:57:54,661 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:57:54,661 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:57:54,662 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a97cb40e-a93e-44ac-a90e-e2c6b003b058/bin/uautomizer/z3 Starting monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:57:54,666 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:57:54,667 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:57:54,667 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:57:54,667 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:57:54,668 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:57:54,669 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:57:54,669 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:57:54,672 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a97cb40e-a93e-44ac-a90e-e2c6b003b058/bin/uautomizer/z3 Starting monitored process 40 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 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:57:54,678 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:57:54,679 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:57:54,679 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:57:54,679 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:57:54,679 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:57:54,679 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:57:54,680 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:57:54,680 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:57:54,681 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a97cb40e-a93e-44ac-a90e-e2c6b003b058/bin/uautomizer/z3 Starting monitored process 41 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 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:57:54,686 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:57:54,687 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:57:54,687 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:57:54,687 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:57:54,687 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:57:54,688 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:57:54,689 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-25 08:57:54,691 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a97cb40e-a93e-44ac-a90e-e2c6b003b058/bin/uautomizer/z3 Starting monitored process 42 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 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:57:54,695 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:57:54,697 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:57:54,697 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:57:54,697 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:57:54,697 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:57:54,697 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:57:54,698 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:57:54,698 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:57:54,699 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a97cb40e-a93e-44ac-a90e-e2c6b003b058/bin/uautomizer/z3 Starting monitored process 43 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 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:57:54,704 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:57:54,705 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:57:54,705 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:57:54,705 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:57:54,705 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:57:54,705 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:57:54,705 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:57:54,706 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:57:54,710 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a97cb40e-a93e-44ac-a90e-e2c6b003b058/bin/uautomizer/z3 Starting monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:57:54,718 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:57:54,720 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:57:54,720 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:57:54,720 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:57:54,720 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:57:54,721 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:57:54,721 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:57:54,721 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:57:54,723 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a97cb40e-a93e-44ac-a90e-e2c6b003b058/bin/uautomizer/z3 Starting monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:57:54,730 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:57:54,732 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:57:54,732 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:57:54,732 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:57:54,733 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:57:54,733 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:57:54,733 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:57:54,733 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:57:54,735 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a97cb40e-a93e-44ac-a90e-e2c6b003b058/bin/uautomizer/z3 Starting monitored process 46 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 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:57:54,743 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:57:54,744 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:57:54,744 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:57:54,745 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:57:54,745 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:57:54,745 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:57:54,745 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:57:54,745 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:57:54,747 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a97cb40e-a93e-44ac-a90e-e2c6b003b058/bin/uautomizer/z3 Starting monitored process 47 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 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:57:54,751 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:57:54,752 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:57:54,753 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:57:54,753 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:57:54,753 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:57:54,754 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:57:54,754 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-25 08:57:54,757 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a97cb40e-a93e-44ac-a90e-e2c6b003b058/bin/uautomizer/z3 Starting monitored process 48 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 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:57:54,762 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:57:54,763 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:57:54,763 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:57:54,764 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:57:54,764 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:57:54,765 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:57:54,765 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-25 08:57:54,767 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a97cb40e-a93e-44ac-a90e-e2c6b003b058/bin/uautomizer/z3 Starting monitored process 49 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 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:57:54,771 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:57:54,773 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:57:54,773 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:57:54,773 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:57:54,773 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:57:54,776 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:57:54,776 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-25 08:57:54,782 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a97cb40e-a93e-44ac-a90e-e2c6b003b058/bin/uautomizer/z3 Starting monitored process 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:57:54,806 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:57:54,808 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:57:54,808 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:57:54,808 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:57:54,808 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:57:54,809 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:57:54,810 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:57:54,813 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a97cb40e-a93e-44ac-a90e-e2c6b003b058/bin/uautomizer/z3 Starting monitored process 51 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:57:54,818 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:57:54,820 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:57:54,820 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:57:54,820 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:57:54,820 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:57:54,822 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:57:54,822 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 51 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:57:54,827 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a97cb40e-a93e-44ac-a90e-e2c6b003b058/bin/uautomizer/z3 Starting monitored process 52 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:57:54,832 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:57:54,834 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:57:54,834 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:57:54,834 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:57:54,834 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:57:54,835 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:57:54,836 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 52 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:57:54,839 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a97cb40e-a93e-44ac-a90e-e2c6b003b058/bin/uautomizer/z3 Starting monitored process 53 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:57:54,847 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:57:54,849 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:57:54,850 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:57:54,850 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:57:54,850 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:57:54,862 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:57:54,862 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 53 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:57:54,884 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:57:54,924 INFO L443 ModelExtractionUtils]: Simplification made 16 calls to the SMT solver. [2019-11-25 08:57:54,925 INFO L444 ModelExtractionUtils]: 10 out of 40 variables were initially zero. Simplification set additionally 27 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a97cb40e-a93e-44ac-a90e-e2c6b003b058/bin/uautomizer/z3 Starting monitored process 54 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:57:54,928 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 54 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:57:54,929 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2019-11-25 08:57:54,930 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:57:54,930 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_strcspn_~i~0, v_rep(select #length ULTIMATE.start_strcspn_~reject.base)_4) = -2*ULTIMATE.start_strcspn_~i~0 + 5*v_rep(select #length ULTIMATE.start_strcspn_~reject.base)_4 Supporting invariants [] [2019-11-25 08:57:55,015 INFO L297 tatePredicateManager]: 33 out of 34 supporting invariants were superfluous and have been removed [2019-11-25 08:57:55,017 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2019-11-25 08:57:55,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:57:55,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:57:55,064 INFO L255 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 24 conjunts are in the unsatisfiable core [2019-11-25 08:57:55,065 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:57:55,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:57:55,169 INFO L255 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-25 08:57:55,170 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:57:55,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:57:55,218 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.5 stem predicates 3 loop predicates [2019-11-25 08:57:55,218 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 37 states and 41 transitions. cyclomatic complexity: 8 Second operand 8 states. [2019-11-25 08:57:55,279 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 37 states and 41 transitions. cyclomatic complexity: 8. Second operand 8 states. Result 37 states and 41 transitions. Complement of second has 5 states. [2019-11-25 08:57:55,281 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 3 stem states 0 non-accepting loop states 1 accepting loop states [2019-11-25 08:57:55,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-11-25 08:57:55,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 6 transitions. [2019-11-25 08:57:55,281 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 26 letters. Loop has 4 letters. [2019-11-25 08:57:55,281 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:57:55,281 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-25 08:57:55,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:57:55,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:57:55,339 INFO L255 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 24 conjunts are in the unsatisfiable core [2019-11-25 08:57:55,341 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:57:55,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:57:55,410 INFO L255 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-25 08:57:55,411 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:57:55,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:57:55,455 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.5 stem predicates 3 loop predicates [2019-11-25 08:57:55,455 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 37 states and 41 transitions. cyclomatic complexity: 8 Second operand 8 states. [2019-11-25 08:57:55,492 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 37 states and 41 transitions. cyclomatic complexity: 8. Second operand 8 states. Result 37 states and 41 transitions. Complement of second has 5 states. [2019-11-25 08:57:55,494 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 3 stem states 0 non-accepting loop states 1 accepting loop states [2019-11-25 08:57:55,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-11-25 08:57:55,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 6 transitions. [2019-11-25 08:57:55,494 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 26 letters. Loop has 4 letters. [2019-11-25 08:57:55,495 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:57:55,495 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-25 08:57:55,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:57:55,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:57:55,545 INFO L255 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 24 conjunts are in the unsatisfiable core [2019-11-25 08:57:55,546 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:57:55,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:57:55,602 INFO L255 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-25 08:57:55,603 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:57:55,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:57:55,637 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.5 stem predicates 3 loop predicates [2019-11-25 08:57:55,637 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 37 states and 41 transitions. cyclomatic complexity: 8 Second operand 8 states. [2019-11-25 08:57:55,777 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 37 states and 41 transitions. cyclomatic complexity: 8. Second operand 8 states. Result 66 states and 74 transitions. Complement of second has 13 states. [2019-11-25 08:57:55,790 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 9 states 5 stem states 2 non-accepting loop states 2 accepting loop states [2019-11-25 08:57:55,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-11-25 08:57:55,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 50 transitions. [2019-11-25 08:57:55,790 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 50 transitions. Stem has 26 letters. Loop has 4 letters. [2019-11-25 08:57:55,791 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:57:55,791 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 50 transitions. Stem has 30 letters. Loop has 4 letters. [2019-11-25 08:57:55,791 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:57:55,791 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 50 transitions. Stem has 26 letters. Loop has 8 letters. [2019-11-25 08:57:55,792 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:57:55,792 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 66 states and 74 transitions. [2019-11-25 08:57:55,793 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-25 08:57:55,794 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 66 states to 52 states and 57 transitions. [2019-11-25 08:57:55,794 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2019-11-25 08:57:55,794 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2019-11-25 08:57:55,794 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 57 transitions. [2019-11-25 08:57:55,794 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:57:55,794 INFO L688 BuchiCegarLoop]: Abstraction has 52 states and 57 transitions. [2019-11-25 08:57:55,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states and 57 transitions. [2019-11-25 08:57:55,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 47. [2019-11-25 08:57:55,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2019-11-25 08:57:55,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 52 transitions. [2019-11-25 08:57:55,799 INFO L711 BuchiCegarLoop]: Abstraction has 47 states and 52 transitions. [2019-11-25 08:57:55,799 INFO L591 BuchiCegarLoop]: Abstraction has 47 states and 52 transitions. [2019-11-25 08:57:55,799 INFO L424 BuchiCegarLoop]: ======== Iteration 7============ [2019-11-25 08:57:55,799 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 47 states and 52 transitions. [2019-11-25 08:57:55,800 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-25 08:57:55,800 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:57:55,800 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:57:55,801 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [6, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1] [2019-11-25 08:57:55,801 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-11-25 08:57:55,806 INFO L794 eck$LassoCheckResult]: Stem: 1714#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 1708#L-1 havoc main_#res;havoc main_#t~nondet9, main_#t~malloc10.base, main_#t~malloc10.offset, main_#t~nondet11, main_#t~malloc12.base, main_#t~malloc12.offset, main_#t~ret13, main_~in_len~0, main_~in~0.base, main_~in~0.offset, main_~out_len~0, main_~out~0.base, main_~out~0.offset;main_~in_len~0 := main_#t~nondet9;havoc main_#t~nondet9; 1709#L519 assume !(main_~in_len~0 < 1);call main_#t~malloc10.base, main_#t~malloc10.offset := #Ultimate.allocOnStack(main_~in_len~0);main_~in~0.base, main_~in~0.offset := main_#t~malloc10.base, main_#t~malloc10.offset;call write~int(0, main_~in~0.base, main_~in~0.offset + (main_~in_len~0 - 1), 1);main_~out_len~0 := main_#t~nondet11;havoc main_#t~nondet11; 1719#L523 assume !(main_~out_len~0 < 1);call main_#t~malloc12.base, main_#t~malloc12.offset := #Ultimate.allocOnStack(main_~out_len~0);main_~out~0.base, main_~out~0.offset := main_#t~malloc12.base, main_#t~malloc12.offset;call write~int(0, main_~out~0.base, main_~out~0.offset + (main_~out_len~0 - 1), 1);strcspn_#in~s.base, strcspn_#in~s.offset, strcspn_#in~reject.base, strcspn_#in~reject.offset := main_~in~0.base, main_~in~0.offset, main_~out~0.base, main_~out~0.offset;havoc strcspn_#res;havoc strcspn_#t~mem4, strcspn_#t~mem5, strcspn_#t~pre3, strcspn_#t~mem6, strcspn_#t~pre7, strcspn_#t~pre2.base, strcspn_#t~pre2.offset, strcspn_#t~mem8, strcspn_~s.base, strcspn_~s.offset, strcspn_~reject.base, strcspn_~reject.offset, strcspn_~l~0, strcspn_~i~0;strcspn_~s.base, strcspn_~s.offset := strcspn_#in~s.base, strcspn_#in~s.offset;strcspn_~reject.base, strcspn_~reject.offset := strcspn_#in~reject.base, strcspn_#in~reject.offset;strcspn_~l~0 := 0;havoc strcspn_~i~0; 1727#L510-4 call strcspn_#t~mem8 := read~int(strcspn_~s.base, strcspn_~s.offset, 1); 1730#L510-1 assume !!(0 != strcspn_#t~mem8);havoc strcspn_#t~mem8;strcspn_~i~0 := 0; 1754#L511-4 call strcspn_#t~mem6 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 1751#L511-1 assume !!(0 != strcspn_#t~mem6);havoc strcspn_#t~mem6;call strcspn_#t~mem4 := read~int(strcspn_~s.base, strcspn_~s.offset, 1);call strcspn_#t~mem5 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 1753#L512 assume !(strcspn_#t~mem4 == strcspn_#t~mem5);havoc strcspn_#t~mem4;havoc strcspn_#t~mem5; 1752#L511-3 strcspn_#t~pre3 := 1 + strcspn_~i~0;strcspn_~i~0 := 1 + strcspn_~i~0;havoc strcspn_#t~pre3; 1750#L511-4 call strcspn_#t~mem6 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 1749#L511-1 assume !(0 != strcspn_#t~mem6);havoc strcspn_#t~mem6; 1748#L511-5 strcspn_#t~pre7 := 1 + strcspn_~l~0;strcspn_~l~0 := 1 + strcspn_~l~0;havoc strcspn_#t~pre7; 1747#L510-3 strcspn_#t~pre2.base, strcspn_#t~pre2.offset := strcspn_~s.base, 1 + strcspn_~s.offset;strcspn_~s.base, strcspn_~s.offset := strcspn_~s.base, 1 + strcspn_~s.offset;havoc strcspn_#t~pre2.base, strcspn_#t~pre2.offset; 1731#L510-4 call strcspn_#t~mem8 := read~int(strcspn_~s.base, strcspn_~s.offset, 1); 1717#L510-1 assume !!(0 != strcspn_#t~mem8);havoc strcspn_#t~mem8;strcspn_~i~0 := 0; 1718#L511-4 call strcspn_#t~mem6 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 1740#L511-1 assume !!(0 != strcspn_#t~mem6);havoc strcspn_#t~mem6;call strcspn_#t~mem4 := read~int(strcspn_~s.base, strcspn_~s.offset, 1);call strcspn_#t~mem5 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 1741#L512 assume !(strcspn_#t~mem4 == strcspn_#t~mem5);havoc strcspn_#t~mem4;havoc strcspn_#t~mem5; 1721#L511-3 strcspn_#t~pre3 := 1 + strcspn_~i~0;strcspn_~i~0 := 1 + strcspn_~i~0;havoc strcspn_#t~pre3; 1722#L511-4 call strcspn_#t~mem6 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 1737#L511-1 assume !(0 != strcspn_#t~mem6);havoc strcspn_#t~mem6; 1729#L511-5 strcspn_#t~pre7 := 1 + strcspn_~l~0;strcspn_~l~0 := 1 + strcspn_~l~0;havoc strcspn_#t~pre7; 1725#L510-3 strcspn_#t~pre2.base, strcspn_#t~pre2.offset := strcspn_~s.base, 1 + strcspn_~s.offset;strcspn_~s.base, strcspn_~s.offset := strcspn_~s.base, 1 + strcspn_~s.offset;havoc strcspn_#t~pre2.base, strcspn_#t~pre2.offset; 1726#L510-4 call strcspn_#t~mem8 := read~int(strcspn_~s.base, strcspn_~s.offset, 1); 1746#L510-1 assume !!(0 != strcspn_#t~mem8);havoc strcspn_#t~mem8;strcspn_~i~0 := 0; 1723#L511-4 call strcspn_#t~mem6 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 1724#L511-1 assume !!(0 != strcspn_#t~mem6);havoc strcspn_#t~mem6;call strcspn_#t~mem4 := read~int(strcspn_~s.base, strcspn_~s.offset, 1);call strcspn_#t~mem5 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 1744#L512 assume !(strcspn_#t~mem4 == strcspn_#t~mem5);havoc strcspn_#t~mem4;havoc strcspn_#t~mem5; 1743#L511-3 strcspn_#t~pre3 := 1 + strcspn_~i~0;strcspn_~i~0 := 1 + strcspn_~i~0;havoc strcspn_#t~pre3; 1742#L511-4 call strcspn_#t~mem6 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 1736#L511-1 assume !(0 != strcspn_#t~mem6);havoc strcspn_#t~mem6; 1735#L511-5 strcspn_#t~pre7 := 1 + strcspn_~l~0;strcspn_~l~0 := 1 + strcspn_~l~0;havoc strcspn_#t~pre7; 1734#L510-3 strcspn_#t~pre2.base, strcspn_#t~pre2.offset := strcspn_~s.base, 1 + strcspn_~s.offset;strcspn_~s.base, strcspn_~s.offset := strcspn_~s.base, 1 + strcspn_~s.offset;havoc strcspn_#t~pre2.base, strcspn_#t~pre2.offset; 1732#L510-4 call strcspn_#t~mem8 := read~int(strcspn_~s.base, strcspn_~s.offset, 1); 1715#L510-1 assume !!(0 != strcspn_#t~mem8);havoc strcspn_#t~mem8;strcspn_~i~0 := 0; 1716#L511-4 [2019-11-25 08:57:55,806 INFO L796 eck$LassoCheckResult]: Loop: 1716#L511-4 call strcspn_#t~mem6 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 1710#L511-1 assume !!(0 != strcspn_#t~mem6);havoc strcspn_#t~mem6;call strcspn_#t~mem4 := read~int(strcspn_~s.base, strcspn_~s.offset, 1);call strcspn_#t~mem5 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 1711#L512 assume !(strcspn_#t~mem4 == strcspn_#t~mem5);havoc strcspn_#t~mem4;havoc strcspn_#t~mem5; 1720#L511-3 strcspn_#t~pre3 := 1 + strcspn_~i~0;strcspn_~i~0 := 1 + strcspn_~i~0;havoc strcspn_#t~pre3; 1716#L511-4 [2019-11-25 08:57:55,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:57:55,806 INFO L82 PathProgramCache]: Analyzing trace with hash -43865248, now seen corresponding path program 6 times [2019-11-25 08:57:55,806 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:57:55,807 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433022918] [2019-11-25 08:57:55,807 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:57:55,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:57:55,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:57:55,853 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:57:55,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:57:55,854 INFO L82 PathProgramCache]: Analyzing trace with hash 1698248, now seen corresponding path program 5 times [2019-11-25 08:57:55,854 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:57:55,854 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566013004] [2019-11-25 08:57:55,854 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:57:55,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:57:55,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:57:55,866 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:57:55,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:57:55,867 INFO L82 PathProgramCache]: Analyzing trace with hash -345387609, now seen corresponding path program 7 times [2019-11-25 08:57:55,867 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:57:55,867 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330005454] [2019-11-25 08:57:55,868 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:57:55,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:57:55,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:57:55,903 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:57:56,987 WARN L192 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 263 DAG size of output: 200 [2019-11-25 08:57:57,139 WARN L192 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2019-11-25 08:57:57,141 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:57:57,141 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:57:57,141 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:57:57,141 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:57:57,141 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:57:57,141 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:57:57,142 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:57:57,142 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:57:57,142 INFO L133 ssoRankerPreferences]: Filename of dumped script: strcspn.i_Iteration7_Lasso [2019-11-25 08:57:57,142 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:57:57,142 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:57:57,144 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:57:57,146 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:57:57,148 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:57:57,149 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:57:57,151 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:57:57,152 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:57:57,153 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:57:57,155 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:57:57,157 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:57:57,158 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:57:57,160 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:57:57,575 WARN L192 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 96 [2019-11-25 08:57:57,665 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:57:57,667 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:57:57,668 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:57:57,670 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:57:57,672 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:57:57,674 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:57:57,878 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 8 [2019-11-25 08:58:05,163 WARN L192 SmtUtils]: Spent 7.24 s on a formula simplification. DAG size of input: 298 DAG size of output: 150 [2019-11-25 08:58:05,327 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:58:05,327 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a97cb40e-a93e-44ac-a90e-e2c6b003b058/bin/uautomizer/z3 Starting monitored process 55 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 55 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:58:05,331 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:58:05,332 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:58:05,332 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:58:05,332 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:58:05,332 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:58:05,332 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:58:05,333 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:58:05,333 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:58:05,338 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a97cb40e-a93e-44ac-a90e-e2c6b003b058/bin/uautomizer/z3 Starting monitored process 56 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:58:05,346 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:58:05,347 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:58:05,347 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:58:05,347 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:58:05,347 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:58:05,349 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:58:05,349 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 56 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:58:05,352 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a97cb40e-a93e-44ac-a90e-e2c6b003b058/bin/uautomizer/z3 Starting monitored process 57 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 57 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:58:05,356 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:58:05,357 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:58:05,357 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:58:05,357 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:58:05,357 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:58:05,357 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:58:05,357 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:58:05,357 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:58:05,358 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a97cb40e-a93e-44ac-a90e-e2c6b003b058/bin/uautomizer/z3 Starting monitored process 58 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 58 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:58:05,363 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:58:05,364 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:58:05,364 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:58:05,364 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:58:05,364 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:58:05,364 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:58:05,364 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:58:05,364 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:58:05,365 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a97cb40e-a93e-44ac-a90e-e2c6b003b058/bin/uautomizer/z3 Starting monitored process 59 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 59 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:58:05,369 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:58:05,370 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:58:05,370 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:58:05,370 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:58:05,370 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:58:05,370 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:58:05,370 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:58:05,370 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:58:05,371 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a97cb40e-a93e-44ac-a90e-e2c6b003b058/bin/uautomizer/z3 Starting monitored process 60 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 60 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:58:05,375 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:58:05,376 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:58:05,376 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:58:05,376 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:58:05,376 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:58:05,376 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:58:05,376 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:58:05,376 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:58:05,377 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a97cb40e-a93e-44ac-a90e-e2c6b003b058/bin/uautomizer/z3 Starting monitored process 61 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 61 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:58:05,383 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:58:05,384 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:58:05,384 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:58:05,384 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:58:05,384 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:58:05,385 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:58:05,386 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-25 08:58:05,388 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a97cb40e-a93e-44ac-a90e-e2c6b003b058/bin/uautomizer/z3 Starting monitored process 62 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 62 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:58:05,391 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:58:05,392 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:58:05,393 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:58:05,393 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:58:05,393 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:58:05,393 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:58:05,393 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:58:05,393 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:58:05,394 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a97cb40e-a93e-44ac-a90e-e2c6b003b058/bin/uautomizer/z3 Starting monitored process 63 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 63 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:58:05,398 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:58:05,399 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:58:05,400 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:58:05,400 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:58:05,400 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:58:05,400 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:58:05,400 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:58:05,400 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:58:05,401 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a97cb40e-a93e-44ac-a90e-e2c6b003b058/bin/uautomizer/z3 Starting monitored process 64 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:58:05,409 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 Waiting until toolchain timeout for monitored process 64 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:58:05,410 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:58:05,410 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:58:05,410 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:58:05,411 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:58:05,411 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:58:05,411 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:58:05,411 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:58:05,412 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a97cb40e-a93e-44ac-a90e-e2c6b003b058/bin/uautomizer/z3 Starting monitored process 65 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 65 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:58:05,415 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:58:05,417 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:58:05,417 INFO L203 nArgumentSynthesizer]: 108 stem disjuncts [2019-11-25 08:58:05,417 INFO L204 nArgumentSynthesizer]: 4 loop disjuncts [2019-11-25 08:58:05,417 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:58:05,778 INFO L401 nArgumentSynthesizer]: We have 904 Motzkin's Theorem applications. [2019-11-25 08:58:05,778 INFO L402 nArgumentSynthesizer]: A total of 8 supporting invariants were added. [2019-11-25 08:58:06,826 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a97cb40e-a93e-44ac-a90e-e2c6b003b058/bin/uautomizer/z3 Starting monitored process 66 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:58:06,841 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:58:06,842 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:58:06,843 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:58:06,843 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:58:06,843 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:58:06,845 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:58:06,845 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 66 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:58:06,854 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a97cb40e-a93e-44ac-a90e-e2c6b003b058/bin/uautomizer/z3 Starting monitored process 67 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:58:06,862 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:58:06,864 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:58:06,864 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:58:06,864 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:58:06,864 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:58:06,873 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:58:06,873 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 67 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:58:06,896 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:58:06,939 INFO L443 ModelExtractionUtils]: Simplification made 14 calls to the SMT solver. [2019-11-25 08:58:06,939 INFO L444 ModelExtractionUtils]: 23 out of 49 variables were initially zero. Simplification set additionally 22 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a97cb40e-a93e-44ac-a90e-e2c6b003b058/bin/uautomizer/z3 Starting monitored process 68 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 68 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:58:06,981 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-25 08:58:06,984 INFO L438 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2019-11-25 08:58:06,984 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:58:06,984 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_strcspn_~i~0, v_rep(select #length ULTIMATE.start_main_#t~malloc12.base)_5) = -1*ULTIMATE.start_strcspn_~i~0 + 1*v_rep(select #length ULTIMATE.start_main_#t~malloc12.base)_5 Supporting invariants [1*ULTIMATE.start_strcspn_~reject.offset >= 0] [2019-11-25 08:58:07,109 INFO L297 tatePredicateManager]: 37 out of 39 supporting invariants were superfluous and have been removed [2019-11-25 08:58:07,113 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2019-11-25 08:58:07,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:58:07,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:58:07,171 INFO L255 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-25 08:58:07,172 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:58:07,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:58:07,243 INFO L255 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-25 08:58:07,244 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:58:07,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:58:07,268 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.4 stem predicates 2 loop predicates [2019-11-25 08:58:07,268 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 47 states and 52 transitions. cyclomatic complexity: 10 Second operand 6 states. [2019-11-25 08:58:07,310 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 47 states and 52 transitions. cyclomatic complexity: 10. Second operand 6 states. Result 55 states and 61 transitions. Complement of second has 6 states. [2019-11-25 08:58:07,313 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-25 08:58:07,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-11-25 08:58:07,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2019-11-25 08:58:07,313 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 36 letters. Loop has 4 letters. [2019-11-25 08:58:07,314 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:58:07,314 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-25 08:58:07,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:58:07,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:58:07,386 INFO L255 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-25 08:58:07,390 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:58:07,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:58:07,457 INFO L255 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-25 08:58:07,457 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:58:07,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:58:07,474 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.4 stem predicates 2 loop predicates [2019-11-25 08:58:07,474 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 47 states and 52 transitions. cyclomatic complexity: 10 Second operand 6 states. [2019-11-25 08:58:07,510 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 47 states and 52 transitions. cyclomatic complexity: 10. Second operand 6 states. Result 55 states and 61 transitions. Complement of second has 6 states. [2019-11-25 08:58:07,511 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-25 08:58:07,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-11-25 08:58:07,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2019-11-25 08:58:07,511 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 36 letters. Loop has 4 letters. [2019-11-25 08:58:07,511 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:58:07,512 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-25 08:58:07,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:58:07,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:58:07,570 INFO L255 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-25 08:58:07,572 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:58:07,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:58:07,629 INFO L255 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-25 08:58:07,629 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:58:07,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:58:07,642 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.4 stem predicates 2 loop predicates [2019-11-25 08:58:07,643 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 47 states and 52 transitions. cyclomatic complexity: 10 Second operand 6 states. [2019-11-25 08:58:07,730 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 47 states and 52 transitions. cyclomatic complexity: 10. Second operand 6 states. Result 108 states and 114 transitions. Complement of second has 8 states. [2019-11-25 08:58:07,730 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 3 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-25 08:58:07,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-11-25 08:58:07,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 26 transitions. [2019-11-25 08:58:07,731 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 26 transitions. Stem has 36 letters. Loop has 4 letters. [2019-11-25 08:58:07,731 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:58:07,731 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 26 transitions. Stem has 40 letters. Loop has 4 letters. [2019-11-25 08:58:07,731 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:58:07,731 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 26 transitions. Stem has 36 letters. Loop has 8 letters. [2019-11-25 08:58:07,732 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:58:07,732 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 108 states and 114 transitions. [2019-11-25 08:58:07,733 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-25 08:58:07,733 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 108 states to 0 states and 0 transitions. [2019-11-25 08:58:07,734 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-25 08:58:07,734 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-25 08:58:07,734 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-25 08:58:07,734 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-25 08:58:07,734 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-25 08:58:07,734 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-25 08:58:07,734 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-25 08:58:07,734 INFO L424 BuchiCegarLoop]: ======== Iteration 8============ [2019-11-25 08:58:07,734 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-25 08:58:07,734 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-25 08:58:07,734 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-25 08:58:07,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 25.11 08:58:07 BoogieIcfgContainer [2019-11-25 08:58:07,739 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-25 08:58:07,740 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:58:07,740 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:58:07,740 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:58:07,740 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:57:42" (3/4) ... [2019-11-25 08:58:07,743 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-25 08:58:07,743 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:58:07,745 INFO L168 Benchmark]: Toolchain (without parser) took 26186.30 ms. Allocated memory was 1.0 GB in the beginning and 1.5 GB in the end (delta: 504.4 MB). Free memory was 940.7 MB in the beginning and 1.4 GB in the end (delta: -418.4 MB). Peak memory consumption was 86.0 MB. Max. memory is 11.5 GB. [2019-11-25 08:58:07,745 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:58:07,745 INFO L168 Benchmark]: CACSL2BoogieTranslator took 444.44 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 198.2 MB). Free memory was 940.7 MB in the beginning and 1.2 GB in the end (delta: -241.3 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. [2019-11-25 08:58:07,746 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.10 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. [2019-11-25 08:58:07,746 INFO L168 Benchmark]: Boogie Preprocessor took 25.05 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-25 08:58:07,747 INFO L168 Benchmark]: RCFGBuilder took 382.44 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. [2019-11-25 08:58:07,747 INFO L168 Benchmark]: BuchiAutomizer took 25283.81 ms. Allocated memory was 1.2 GB in the beginning and 1.5 GB in the end (delta: 306.2 MB). Free memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: -206.1 MB). Peak memory consumption was 100.0 MB. Max. memory is 11.5 GB. [2019-11-25 08:58:07,747 INFO L168 Benchmark]: Witness Printer took 3.88 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:58:07,749 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 444.44 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 198.2 MB). Free memory was 940.7 MB in the beginning and 1.2 GB in the end (delta: -241.3 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 43.10 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 25.05 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 382.44 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 25283.81 ms. Allocated memory was 1.2 GB in the beginning and 1.5 GB in the end (delta: 306.2 MB). Free memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: -206.1 MB). Peak memory consumption was 100.0 MB. Max. memory is 11.5 GB. * Witness Printer took 3.88 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 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 - GenericResult: Unfinished Backtranslation unknown boogie variable #length - 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 7 terminating modules (2 trivial, 2 deterministic, 3 nondeterministic). One deterministic module has affine ranking function unknown-#length-unknown[s] + -1 * s and consists of 3 locations. One deterministic module has affine ranking function -1 * i + unknown-#length-unknown[__builtin_alloca (out_len)] and consists of 4 locations. One nondeterministic module has affine ranking function 3 * unknown-#length-unknown[reject] + -2 * i and consists of 8 locations. One nondeterministic module has affine ranking function -2 * i + 5 * unknown-#length-unknown[reject] and consists of 9 locations. One nondeterministic module has affine ranking function -1 * i + unknown-#length-unknown[__builtin_alloca (out_len)] and consists of 5 locations. 2 modules have a trivial ranking function, the largest among these consists of 13 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 25.2s and 8 iterations. TraceHistogramMax:6. Analysis of lassos took 22.5s. Construction of modules took 0.2s. Büchi inclusion checks took 2.2s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 5. Automata minimization 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 24 StatesRemovedByMinimization, 4 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 47 states and ocurred in iteration 6. Nontrivial modules had stage [2, 0, 3, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 141 SDtfs, 350 SDslu, 192 SDs, 0 SdLazy, 228 SolverSat, 61 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT0 conc1 concLT0 SILN0 SILU0 SILI0 SILT0 lasso5 LassoPreprocessingBenchmarks: Lassos: inital264 mio100 ax100 hnf99 lsp95 ukn76 mio100 lsp38 div100 bol100 ite100 ukn100 eq185 hnf87 smp98 dnf1781 smp67 tf100 neg89 sie127 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 1412ms VariablesStem: 6 VariablesLoop: 2 DisjunctsStem: 108 DisjunctsLoop: 4 SupportingInvariants: 8 MotzkinApplications: 904 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...