./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-libowfat/strcspn_true-termination.c.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_d9a45ee4-c7dc-4d65-a51e-2147ce3f81ae/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_d9a45ee4-c7dc-4d65-a51e-2147ce3f81ae/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_d9a45ee4-c7dc-4d65-a51e-2147ce3f81ae/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_d9a45ee4-c7dc-4d65-a51e-2147ce3f81ae/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-libowfat/strcspn_true-termination.c.i -s /tmp/vcloud-vcloud-master/worker/working_dir_d9a45ee4-c7dc-4d65-a51e-2147ce3f81ae/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_d9a45ee4-c7dc-4d65-a51e-2147ce3f81ae/bin-2019/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 0.1.23-635dfa2 [2018-12-08 09:19:57,518 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-08 09:19:57,519 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-08 09:19:57,525 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-08 09:19:57,525 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-08 09:19:57,526 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-08 09:19:57,526 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-08 09:19:57,527 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-08 09:19:57,528 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-08 09:19:57,528 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-08 09:19:57,528 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-08 09:19:57,529 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-08 09:19:57,529 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-08 09:19:57,529 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-08 09:19:57,530 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-08 09:19:57,530 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-08 09:19:57,531 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-08 09:19:57,531 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-08 09:19:57,532 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-08 09:19:57,533 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-08 09:19:57,533 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-08 09:19:57,534 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-08 09:19:57,535 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-08 09:19:57,535 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-08 09:19:57,535 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-08 09:19:57,536 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-08 09:19:57,536 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-08 09:19:57,536 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-08 09:19:57,537 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-08 09:19:57,537 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-08 09:19:57,537 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-08 09:19:57,538 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-08 09:19:57,538 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-08 09:19:57,538 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-08 09:19:57,538 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-08 09:19:57,539 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-08 09:19:57,539 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_d9a45ee4-c7dc-4d65-a51e-2147ce3f81ae/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-12-08 09:19:57,546 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-08 09:19:57,546 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-08 09:19:57,547 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-08 09:19:57,547 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-08 09:19:57,547 INFO L133 SettingsManager]: * Use SBE=true [2018-12-08 09:19:57,547 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-12-08 09:19:57,547 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-12-08 09:19:57,547 INFO L133 SettingsManager]: * Use old map elimination=false [2018-12-08 09:19:57,547 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-12-08 09:19:57,547 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-12-08 09:19:57,548 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-12-08 09:19:57,548 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-08 09:19:57,548 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-08 09:19:57,548 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-08 09:19:57,548 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-08 09:19:57,548 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-12-08 09:19:57,548 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-12-08 09:19:57,548 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-12-08 09:19:57,548 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-08 09:19:57,548 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-12-08 09:19:57,548 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-08 09:19:57,549 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-12-08 09:19:57,549 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-08 09:19:57,549 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-08 09:19:57,549 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-12-08 09:19:57,549 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-08 09:19:57,549 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-08 09:19:57,549 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-12-08 09:19:57,550 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-12-08 09:19:57,550 INFO L133 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/working_dir_d9a45ee4-c7dc-4d65-a51e-2147ce3f81ae/bin-2019/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 [2018-12-08 09:19:57,567 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-08 09:19:57,575 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-08 09:19:57,578 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-08 09:19:57,579 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-08 09:19:57,579 INFO L276 PluginConnector]: CDTParser initialized [2018-12-08 09:19:57,580 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_d9a45ee4-c7dc-4d65-a51e-2147ce3f81ae/bin-2019/uautomizer/../../sv-benchmarks/c/termination-libowfat/strcspn_true-termination.c.i [2018-12-08 09:19:57,615 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d9a45ee4-c7dc-4d65-a51e-2147ce3f81ae/bin-2019/uautomizer/data/8b79ef232/1990c0c94bec401eab8ec8ce5654c82b/FLAGe725510eb [2018-12-08 09:19:57,938 INFO L307 CDTParser]: Found 1 translation units. [2018-12-08 09:19:57,939 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_d9a45ee4-c7dc-4d65-a51e-2147ce3f81ae/sv-benchmarks/c/termination-libowfat/strcspn_true-termination.c.i [2018-12-08 09:19:57,944 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d9a45ee4-c7dc-4d65-a51e-2147ce3f81ae/bin-2019/uautomizer/data/8b79ef232/1990c0c94bec401eab8ec8ce5654c82b/FLAGe725510eb [2018-12-08 09:19:58,346 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_d9a45ee4-c7dc-4d65-a51e-2147ce3f81ae/bin-2019/uautomizer/data/8b79ef232/1990c0c94bec401eab8ec8ce5654c82b [2018-12-08 09:19:58,348 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-08 09:19:58,349 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-08 09:19:58,350 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-08 09:19:58,350 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-08 09:19:58,353 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-08 09:19:58,353 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 09:19:58" (1/1) ... [2018-12-08 09:19:58,355 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67726c0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 09:19:58, skipping insertion in model container [2018-12-08 09:19:58,355 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 09:19:58" (1/1) ... [2018-12-08 09:19:58,361 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-08 09:19:58,386 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-08 09:19:58,525 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 09:19:58,531 INFO L191 MainTranslator]: Completed pre-run [2018-12-08 09:19:58,590 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 09:19:58,610 INFO L195 MainTranslator]: Completed translation [2018-12-08 09:19:58,610 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 09:19:58 WrapperNode [2018-12-08 09:19:58,610 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-08 09:19:58,611 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-08 09:19:58,611 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-08 09:19:58,611 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-08 09:19:58,616 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 09:19:58" (1/1) ... [2018-12-08 09:19:58,624 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 09:19:58" (1/1) ... [2018-12-08 09:19:58,636 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-08 09:19:58,636 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-08 09:19:58,636 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-08 09:19:58,637 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-08 09:19:58,642 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 09:19:58" (1/1) ... [2018-12-08 09:19:58,642 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 09:19:58" (1/1) ... [2018-12-08 09:19:58,643 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 09:19:58" (1/1) ... [2018-12-08 09:19:58,644 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 09:19:58" (1/1) ... [2018-12-08 09:19:58,647 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 09:19:58" (1/1) ... [2018-12-08 09:19:58,649 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 09:19:58" (1/1) ... [2018-12-08 09:19:58,650 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 09:19:58" (1/1) ... [2018-12-08 09:19:58,651 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-08 09:19:58,651 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-08 09:19:58,652 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-08 09:19:58,652 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-08 09:19:58,652 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 09:19:58" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d9a45ee4-c7dc-4d65-a51e-2147ce3f81ae/bin-2019/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 [2018-12-08 09:19:58,684 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-08 09:19:58,684 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-08 09:19:58,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-08 09:19:58,684 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-08 09:19:58,684 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-08 09:19:58,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-08 09:19:58,805 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-08 09:19:58,805 INFO L280 CfgBuilder]: Removed 8 assue(true) statements. [2018-12-08 09:19:58,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 09:19:58 BoogieIcfgContainer [2018-12-08 09:19:58,806 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-08 09:19:58,806 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-12-08 09:19:58,806 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-12-08 09:19:58,808 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-12-08 09:19:58,809 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-08 09:19:58,809 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 08.12 09:19:58" (1/3) ... [2018-12-08 09:19:58,810 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@16f97a12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 08.12 09:19:58, skipping insertion in model container [2018-12-08 09:19:58,810 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-08 09:19:58,810 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 09:19:58" (2/3) ... [2018-12-08 09:19:58,810 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@16f97a12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 08.12 09:19:58, skipping insertion in model container [2018-12-08 09:19:58,810 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-08 09:19:58,810 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 09:19:58" (3/3) ... [2018-12-08 09:19:58,811 INFO L375 chiAutomizerObserver]: Analyzing ICFG strcspn_true-termination.c.i [2018-12-08 09:19:58,843 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-08 09:19:58,844 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-12-08 09:19:58,844 INFO L375 BuchiCegarLoop]: Hoare is false [2018-12-08 09:19:58,844 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-12-08 09:19:58,844 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-08 09:19:58,844 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-08 09:19:58,844 INFO L379 BuchiCegarLoop]: Difference is false [2018-12-08 09:19:58,844 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-08 09:19:58,844 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-12-08 09:19:58,852 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states. [2018-12-08 09:19:58,866 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2018-12-08 09:19:58,866 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-08 09:19:58,866 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-08 09:19:58,870 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2018-12-08 09:19:58,870 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2018-12-08 09:19:58,870 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-12-08 09:19:58,870 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states. [2018-12-08 09:19:58,871 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2018-12-08 09:19:58,871 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-08 09:19:58,871 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-08 09:19:58,871 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2018-12-08 09:19:58,871 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2018-12-08 09:19:58,876 INFO L794 eck$LassoCheckResult]: Stem: 10#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0]; 8#L-1true havoc main_#res;havoc main_#t~nondet9, main_#t~malloc10.base, main_#t~malloc10.offset, main_#t~nondet11, main_#t~malloc12.base, main_#t~malloc12.offset, main_#t~ret13, main_~in_len~0, main_~in~0.base, main_~in~0.offset, main_~out_len~0, main_~out~0.base, main_~out~0.offset;main_~in_len~0 := main_#t~nondet9;havoc main_#t~nondet9; 12#L519true assume !(main_~in_len~0 < 1);call main_#t~malloc10.base, main_#t~malloc10.offset := #Ultimate.alloc(main_~in_len~0);main_~in~0.base, main_~in~0.offset := main_#t~malloc10.base, main_#t~malloc10.offset;call write~int(0, main_~in~0.base, main_~in~0.offset + (main_~in_len~0 - 1), 1);main_~out_len~0 := main_#t~nondet11;havoc main_#t~nondet11; 6#L523true assume !(main_~out_len~0 < 1);call main_#t~malloc12.base, main_#t~malloc12.offset := #Ultimate.alloc(main_~out_len~0);main_~out~0.base, main_~out~0.offset := main_#t~malloc12.base, main_#t~malloc12.offset;call write~int(0, main_~out~0.base, main_~out~0.offset + (main_~out_len~0 - 1), 1);strcspn_#in~s.base, strcspn_#in~s.offset, strcspn_#in~reject.base, strcspn_#in~reject.offset := main_~in~0.base, main_~in~0.offset, main_~out~0.base, main_~out~0.offset;havoc strcspn_#res;havoc strcspn_#t~mem4, strcspn_#t~mem5, strcspn_#t~pre3, strcspn_#t~mem6, strcspn_#t~pre7, strcspn_#t~pre2.base, strcspn_#t~pre2.offset, strcspn_#t~mem8, strcspn_~s.base, strcspn_~s.offset, strcspn_~reject.base, strcspn_~reject.offset, strcspn_~l~0, strcspn_~i~0;strcspn_~s.base, strcspn_~s.offset := strcspn_#in~s.base, strcspn_#in~s.offset;strcspn_~reject.base, strcspn_~reject.offset := strcspn_#in~reject.base, strcspn_#in~reject.offset;strcspn_~l~0 := 0;havoc strcspn_~i~0; 18#L510-4true [2018-12-08 09:19:58,876 INFO L796 eck$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 [2018-12-08 09:19:58,879 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 09:19:58,880 INFO L82 PathProgramCache]: Analyzing trace with hash 925672, now seen corresponding path program 1 times [2018-12-08 09:19:58,881 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 09:19:58,881 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 09:19:58,909 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 09:19:58,909 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 09:19:58,909 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 09:19:58,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 09:19:58,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 09:19:58,960 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 09:19:58,960 INFO L82 PathProgramCache]: Analyzing trace with hash 44069891, now seen corresponding path program 1 times [2018-12-08 09:19:58,960 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 09:19:58,960 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 09:19:58,961 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 09:19:58,961 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 09:19:58,961 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 09:19:58,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 09:19:58,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 09:19:58,979 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 09:19:58,979 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-08 09:19:58,981 INFO L811 eck$LassoCheckResult]: loop already infeasible [2018-12-08 09:19:58,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-08 09:19:58,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-08 09:19:58,991 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 2 states. [2018-12-08 09:19:58,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 09:19:58,995 INFO L93 Difference]: Finished difference Result 17 states and 21 transitions. [2018-12-08 09:19:58,995 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-08 09:19:58,996 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 21 transitions. [2018-12-08 09:19:58,997 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2018-12-08 09:19:58,999 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 12 states and 13 transitions. [2018-12-08 09:19:59,000 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2018-12-08 09:19:59,000 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2018-12-08 09:19:59,000 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 13 transitions. [2018-12-08 09:19:59,001 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-12-08 09:19:59,001 INFO L705 BuchiCegarLoop]: Abstraction has 12 states and 13 transitions. [2018-12-08 09:19:59,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 13 transitions. [2018-12-08 09:19:59,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-12-08 09:19:59,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-12-08 09:19:59,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2018-12-08 09:19:59,017 INFO L728 BuchiCegarLoop]: Abstraction has 12 states and 13 transitions. [2018-12-08 09:19:59,017 INFO L608 BuchiCegarLoop]: Abstraction has 12 states and 13 transitions. [2018-12-08 09:19:59,017 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-12-08 09:19:59,017 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 13 transitions. [2018-12-08 09:19:59,017 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2018-12-08 09:19:59,018 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-08 09:19:59,018 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-08 09:19:59,018 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2018-12-08 09:19:59,018 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2018-12-08 09:19:59,018 INFO L794 eck$LassoCheckResult]: Stem: 47#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0]; 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.alloc(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.alloc(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 [2018-12-08 09:19:59,018 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 [2018-12-08 09:19:59,018 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 09:19:59,018 INFO L82 PathProgramCache]: Analyzing trace with hash 925672, now seen corresponding path program 2 times [2018-12-08 09:19:59,018 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 09:19:59,018 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 09:19:59,019 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 09:19:59,019 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 09:19:59,019 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 09:19:59,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 09:19:59,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 09:19:59,036 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 09:19:59,036 INFO L82 PathProgramCache]: Analyzing trace with hash 1365737035, now seen corresponding path program 1 times [2018-12-08 09:19:59,036 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 09:19:59,036 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 09:19:59,037 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 09:19:59,037 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 09:19:59,037 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 09:19:59,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 09:19:59,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 09:19:59,045 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 09:19:59,045 INFO L82 PathProgramCache]: Analyzing trace with hash 736220402, now seen corresponding path program 1 times [2018-12-08 09:19:59,045 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 09:19:59,045 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 09:19:59,045 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 09:19:59,045 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 09:19:59,045 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 09:19:59,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 09:19:59,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 09:19:59,321 WARN L180 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 88 [2018-12-08 09:19:59,387 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 09:19:59,387 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 09:19:59,387 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 09:19:59,388 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 09:19:59,388 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-08 09:19:59,388 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 09:19:59,388 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 09:19:59,388 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 09:19:59,388 INFO L131 ssoRankerPreferences]: Filename of dumped script: strcspn_true-termination.c.i_Iteration2_Lasso [2018-12-08 09:19:59,388 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 09:19:59,388 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 09:19:59,403 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:19:59,600 WARN L180 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64 [2018-12-08 09:19:59,665 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:19:59,667 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:19:59,668 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:19:59,670 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:19:59,672 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:19:59,674 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:19:59,675 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:19:59,677 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:19:59,678 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:19:59,681 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:19:59,682 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:19:59,683 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:19:59,685 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:19:59,686 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:19:59,687 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:19:59,688 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:19:59,968 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 09:19:59,971 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-08 09:19:59,972 INFO L122 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 [2018-12-08 09:19:59,974 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 09:19:59,974 INFO L205 nArgumentSynthesizer]: 2 stem disjuncts [2018-12-08 09:19:59,974 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 09:19:59,974 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 09:19:59,978 INFO L402 nArgumentSynthesizer]: We have 8 Motzkin's Theorem applications. [2018-12-08 09:19:59,978 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-08 09:19:59,992 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 09:19:59,992 INFO L122 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 [2018-12-08 09:19:59,992 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 09:19:59,993 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 09:19:59,993 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 09:19:59,993 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 09:19:59,994 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-08 09:19:59,994 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-08 09:19:59,996 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 09:19:59,996 INFO L122 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 [2018-12-08 09:19:59,996 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 09:19:59,997 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 09:19:59,997 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 09:19:59,997 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 09:19:59,999 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-08 09:19:59,999 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-08 09:20:00,021 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-08 09:20:00,035 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2018-12-08 09:20:00,036 INFO L444 ModelExtractionUtils]: 18 out of 25 variables were initially zero. Simplification set additionally 4 variables to zero. [2018-12-08 09:20:00,037 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-08 09:20:00,038 INFO L440 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2018-12-08 09:20:00,038 INFO L518 LassoAnalysis]: Proved termination. [2018-12-08 09:20:00,039 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select #length ULTIMATE.start_main_#t~malloc10.base)_1, ULTIMATE.start_strcspn_~s.offset) = 1*v_rep(select #length ULTIMATE.start_main_#t~malloc10.base)_1 - 1*ULTIMATE.start_strcspn_~s.offset Supporting invariants [] [2018-12-08 09:20:00,081 INFO L297 tatePredicateManager]: 14 out of 15 supporting invariants were superfluous and have been removed [2018-12-08 09:20:00,089 WARN L1298 BoogieBacktranslator]: unknown boogie variable #length [2018-12-08 09:20:00,123 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 09:20:00,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 09:20:00,138 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 09:20:00,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 09:20:00,156 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 09:20:00,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 09:20:00,170 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 [2018-12-08 09:20:00,171 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 13 transitions. cyclomatic complexity: 2 Second operand 4 states. [2018-12-08 09:20:00,214 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 13 transitions. cyclomatic complexity: 2. Second operand 4 states. Result 20 states and 23 transitions. Complement of second has 5 states. [2018-12-08 09:20:00,215 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 [2018-12-08 09:20:00,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-12-08 09:20:00,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2018-12-08 09:20:00,216 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 4 letters. Loop has 6 letters. [2018-12-08 09:20:00,217 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 09:20:00,217 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 10 letters. Loop has 6 letters. [2018-12-08 09:20:00,217 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 09:20:00,217 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 4 letters. Loop has 12 letters. [2018-12-08 09:20:00,218 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 09:20:00,218 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20 states and 23 transitions. [2018-12-08 09:20:00,218 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-12-08 09:20:00,219 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20 states to 18 states and 21 transitions. [2018-12-08 09:20:00,219 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2018-12-08 09:20:00,219 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2018-12-08 09:20:00,219 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 21 transitions. [2018-12-08 09:20:00,219 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-08 09:20:00,219 INFO L705 BuchiCegarLoop]: Abstraction has 18 states and 21 transitions. [2018-12-08 09:20:00,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 21 transitions. [2018-12-08 09:20:00,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-12-08 09:20:00,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-12-08 09:20:00,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2018-12-08 09:20:00,220 INFO L728 BuchiCegarLoop]: Abstraction has 18 states and 21 transitions. [2018-12-08 09:20:00,220 INFO L608 BuchiCegarLoop]: Abstraction has 18 states and 21 transitions. [2018-12-08 09:20:00,221 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-12-08 09:20:00,221 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 21 transitions. [2018-12-08 09:20:00,221 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-12-08 09:20:00,221 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-08 09:20:00,221 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-08 09:20:00,221 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2018-12-08 09:20:00,221 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-12-08 09:20:00,222 INFO L794 eck$LassoCheckResult]: Stem: 199#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0]; 192#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; 193#L519 assume !(main_~in_len~0 < 1);call main_#t~malloc10.base, main_#t~malloc10.offset := #Ultimate.alloc(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; 204#L523 assume !(main_~out_len~0 < 1);call main_#t~malloc12.base, main_#t~malloc12.offset := #Ultimate.alloc(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; 207#L510-4 call strcspn_#t~mem8 := read~int(strcspn_~s.base, strcspn_~s.offset, 1); 200#L510-1 assume !!(0 != strcspn_#t~mem8);havoc strcspn_#t~mem8;strcspn_~i~0 := 0; 201#L511-4 [2018-12-08 09:20:00,222 INFO L796 eck$LassoCheckResult]: Loop: 201#L511-4 call strcspn_#t~mem6 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 194#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); 195#L512 assume !(strcspn_#t~mem4 == strcspn_#t~mem5);havoc strcspn_#t~mem4;havoc strcspn_#t~mem5; 205#L511-3 strcspn_#t~pre3 := 1 + strcspn_~i~0;strcspn_~i~0 := 1 + strcspn_~i~0;havoc strcspn_#t~pre3; 201#L511-4 [2018-12-08 09:20:00,222 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 09:20:00,222 INFO L82 PathProgramCache]: Analyzing trace with hash 889571309, now seen corresponding path program 1 times [2018-12-08 09:20:00,222 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 09:20:00,222 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 09:20:00,222 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 09:20:00,223 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 09:20:00,223 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 09:20:00,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 09:20:00,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 09:20:00,239 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 09:20:00,239 INFO L82 PathProgramCache]: Analyzing trace with hash 1698248, now seen corresponding path program 1 times [2018-12-08 09:20:00,239 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 09:20:00,239 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 09:20:00,240 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 09:20:00,240 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 09:20:00,240 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 09:20:00,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 09:20:00,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 09:20:00,261 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 09:20:00,261 INFO L82 PathProgramCache]: Analyzing trace with hash 736222132, now seen corresponding path program 1 times [2018-12-08 09:20:00,261 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 09:20:00,262 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 09:20:00,262 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 09:20:00,262 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 09:20:00,262 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 09:20:00,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 09:20:00,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 09:20:00,481 WARN L180 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 97 [2018-12-08 09:20:00,546 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 09:20:00,546 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 09:20:00,546 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 09:20:00,546 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 09:20:00,546 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-08 09:20:00,546 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 09:20:00,547 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 09:20:00,547 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 09:20:00,547 INFO L131 ssoRankerPreferences]: Filename of dumped script: strcspn_true-termination.c.i_Iteration3_Lasso [2018-12-08 09:20:00,547 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 09:20:00,547 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 09:20:00,549 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:20:00,550 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:20:00,551 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:20:00,553 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:20:00,554 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:20:00,555 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:20:00,556 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:20:00,557 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:20:00,558 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:20:00,559 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:20:00,561 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:20:00,729 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:20:00,730 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:20:00,731 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:20:00,732 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:20:00,733 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:20:00,734 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:20:00,941 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 09:20:00,941 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-08 09:20:00,941 INFO L122 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 [2018-12-08 09:20:00,942 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 09:20:00,942 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 09:20:00,942 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 09:20:00,942 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 09:20:00,942 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 09:20:00,942 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 09:20:00,942 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 09:20:00,943 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 09:20:00,943 INFO L122 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 [2018-12-08 09:20:00,943 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 09:20:00,943 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 09:20:00,944 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 09:20:00,944 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 09:20:00,944 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 09:20:00,944 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 09:20:00,944 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 09:20:00,944 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 09:20:00,944 INFO L122 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 [2018-12-08 09:20:00,945 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 09:20:00,945 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 09:20:00,945 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 09:20:00,945 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 09:20:00,945 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-08 09:20:00,945 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-08 09:20:00,947 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 09:20:00,947 INFO L122 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 [2018-12-08 09:20:00,947 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 09:20:00,947 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 09:20:00,947 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 09:20:00,947 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 09:20:00,947 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 09:20:00,947 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 09:20:00,947 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 09:20:00,948 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 09:20:00,948 INFO L122 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 [2018-12-08 09:20:00,948 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 09:20:00,948 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 09:20:00,948 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 09:20:00,948 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 09:20:00,949 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-08 09:20:00,949 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-08 09:20:00,950 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 09:20:00,950 INFO L122 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 [2018-12-08 09:20:00,950 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 09:20:00,950 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 09:20:00,950 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 09:20:00,950 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 09:20:00,950 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 09:20:00,951 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 09:20:00,951 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 09:20:00,951 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 09:20:00,951 INFO L122 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 [2018-12-08 09:20:00,952 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 09:20:00,952 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 09:20:00,952 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 09:20:00,952 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 09:20:00,952 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 09:20:00,952 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 09:20:00,952 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 09:20:00,953 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 09:20:00,953 INFO L122 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 [2018-12-08 09:20:00,953 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 09:20:00,953 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 09:20:00,953 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 09:20:00,954 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 09:20:00,954 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 09:20:00,954 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 09:20:00,954 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 09:20:00,954 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 09:20:00,955 INFO L122 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 [2018-12-08 09:20:00,955 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 09:20:00,955 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 09:20:00,955 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 09:20:00,955 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 09:20:00,955 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 09:20:00,955 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 09:20:00,955 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 09:20:00,956 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 09:20:00,956 INFO L122 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 [2018-12-08 09:20:00,956 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 09:20:00,956 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 09:20:00,956 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 09:20:00,956 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 09:20:00,957 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-08 09:20:00,957 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-08 09:20:00,957 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 09:20:00,958 INFO L122 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 [2018-12-08 09:20:00,958 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 09:20:00,958 INFO L205 nArgumentSynthesizer]: 2 stem disjuncts [2018-12-08 09:20:00,958 INFO L206 nArgumentSynthesizer]: 4 loop disjuncts [2018-12-08 09:20:00,958 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 09:20:00,963 INFO L402 nArgumentSynthesizer]: We have 56 Motzkin's Theorem applications. [2018-12-08 09:20:00,963 INFO L403 nArgumentSynthesizer]: A total of 8 supporting invariants were added. [2018-12-08 09:20:00,993 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 09:20:00,993 INFO L122 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 [2018-12-08 09:20:00,994 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 09:20:00,994 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 09:20:00,994 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 09:20:00,994 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 09:20:00,995 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-08 09:20:00,995 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-08 09:20:00,998 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 09:20:00,999 INFO L122 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 [2018-12-08 09:20:00,999 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 09:20:00,999 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 09:20:00,999 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 09:20:01,000 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 09:20:01,001 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-08 09:20:01,001 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-08 09:20:01,010 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-08 09:20:01,022 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2018-12-08 09:20:01,022 INFO L444 ModelExtractionUtils]: 23 out of 28 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-12-08 09:20:01,022 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-08 09:20:01,023 INFO L440 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2018-12-08 09:20:01,023 INFO L518 LassoAnalysis]: Proved termination. [2018-12-08 09:20:01,023 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select #length ULTIMATE.start_strcspn_~reject.base)_2, ULTIMATE.start_strcspn_~reject.offset, ULTIMATE.start_strcspn_~i~0) = 1*v_rep(select #length ULTIMATE.start_strcspn_~reject.base)_2 - 1*ULTIMATE.start_strcspn_~reject.offset - 1*ULTIMATE.start_strcspn_~i~0 Supporting invariants [] [2018-12-08 09:20:01,055 INFO L297 tatePredicateManager]: 16 out of 16 supporting invariants were superfluous and have been removed [2018-12-08 09:20:01,056 WARN L1298 BoogieBacktranslator]: unknown boogie variable #length [2018-12-08 09:20:01,069 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 09:20:01,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 09:20:01,078 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 09:20:01,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 09:20:01,083 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 09:20:01,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 09:20:01,092 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 [2018-12-08 09:20:01,092 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 21 transitions. cyclomatic complexity: 5 Second operand 3 states. [2018-12-08 09:20:01,108 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 21 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 45 states and 51 transitions. Complement of second has 5 states. [2018-12-08 09:20:01,108 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 [2018-12-08 09:20:01,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-08 09:20:01,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 14 transitions. [2018-12-08 09:20:01,109 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 6 letters. Loop has 4 letters. [2018-12-08 09:20:01,109 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 09:20:01,109 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 10 letters. Loop has 4 letters. [2018-12-08 09:20:01,109 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 09:20:01,109 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 6 letters. Loop has 8 letters. [2018-12-08 09:20:01,110 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 09:20:01,110 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 45 states and 51 transitions. [2018-12-08 09:20:01,111 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-12-08 09:20:01,112 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 45 states to 29 states and 33 transitions. [2018-12-08 09:20:01,112 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2018-12-08 09:20:01,112 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2018-12-08 09:20:01,112 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 33 transitions. [2018-12-08 09:20:01,112 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-08 09:20:01,112 INFO L705 BuchiCegarLoop]: Abstraction has 29 states and 33 transitions. [2018-12-08 09:20:01,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states and 33 transitions. [2018-12-08 09:20:01,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 24. [2018-12-08 09:20:01,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-12-08 09:20:01,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2018-12-08 09:20:01,114 INFO L728 BuchiCegarLoop]: Abstraction has 24 states and 27 transitions. [2018-12-08 09:20:01,114 INFO L608 BuchiCegarLoop]: Abstraction has 24 states and 27 transitions. [2018-12-08 09:20:01,115 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-12-08 09:20:01,115 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 27 transitions. [2018-12-08 09:20:01,115 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-12-08 09:20:01,115 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-08 09:20:01,115 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-08 09:20:01,116 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 09:20:01,116 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-12-08 09:20:01,116 INFO L794 eck$LassoCheckResult]: Stem: 376#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0]; 370#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; 371#L519 assume !(main_~in_len~0 < 1);call main_#t~malloc10.base, main_#t~malloc10.offset := #Ultimate.alloc(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; 381#L523 assume !(main_~out_len~0 < 1);call main_#t~malloc12.base, main_#t~malloc12.offset := #Ultimate.alloc(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; 384#L510-4 call strcspn_#t~mem8 := read~int(strcspn_~s.base, strcspn_~s.offset, 1); 379#L510-1 assume !!(0 != strcspn_#t~mem8);havoc strcspn_#t~mem8;strcspn_~i~0 := 0; 380#L511-4 call strcspn_#t~mem6 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 393#L511-1 assume !(0 != strcspn_#t~mem6);havoc strcspn_#t~mem6; 392#L511-5 strcspn_#t~pre7 := 1 + strcspn_~l~0;strcspn_~l~0 := 1 + strcspn_~l~0;havoc strcspn_#t~pre7; 387#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; 388#L510-4 call strcspn_#t~mem8 := read~int(strcspn_~s.base, strcspn_~s.offset, 1); 377#L510-1 assume !!(0 != strcspn_#t~mem8);havoc strcspn_#t~mem8;strcspn_~i~0 := 0; 378#L511-4 [2018-12-08 09:20:01,116 INFO L796 eck$LassoCheckResult]: Loop: 378#L511-4 call strcspn_#t~mem6 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 372#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); 373#L512 assume !(strcspn_#t~mem4 == strcspn_#t~mem5);havoc strcspn_#t~mem4;havoc strcspn_#t~mem5; 382#L511-3 strcspn_#t~pre3 := 1 + strcspn_~i~0;strcspn_~i~0 := 1 + strcspn_~i~0;havoc strcspn_#t~pre3; 378#L511-4 [2018-12-08 09:20:01,116 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 09:20:01,116 INFO L82 PathProgramCache]: Analyzing trace with hash -1161797001, now seen corresponding path program 2 times [2018-12-08 09:20:01,116 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 09:20:01,116 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 09:20:01,117 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 09:20:01,117 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 09:20:01,117 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 09:20:01,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 09:20:01,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 09:20:01,133 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 09:20:01,133 INFO L82 PathProgramCache]: Analyzing trace with hash 1698248, now seen corresponding path program 2 times [2018-12-08 09:20:01,133 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 09:20:01,133 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 09:20:01,134 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 09:20:01,134 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 09:20:01,134 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 09:20:01,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 09:20:01,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 09:20:01,139 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 09:20:01,139 INFO L82 PathProgramCache]: Analyzing trace with hash -967302850, now seen corresponding path program 1 times [2018-12-08 09:20:01,139 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 09:20:01,139 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 09:20:01,140 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 09:20:01,140 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 09:20:01,140 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 09:20:01,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 09:20:01,245 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 09:20:01,245 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 09:20:01,245 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d9a45ee4-c7dc-4d65-a51e-2147ce3f81ae/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-08 09:20:01,253 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 09:20:01,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 09:20:01,266 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 09:20:01,311 INFO L478 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 11 [2018-12-08 09:20:01,313 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2018-12-08 09:20:01,313 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-08 09:20:01,314 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-08 09:20:01,315 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-08 09:20:01,315 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2018-12-08 09:20:01,320 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 09:20:01,336 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-08 09:20:01,337 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2018-12-08 09:20:01,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-12-08 09:20:01,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2018-12-08 09:20:01,368 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. cyclomatic complexity: 6 Second operand 13 states. [2018-12-08 09:20:01,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 09:20:01,433 INFO L93 Difference]: Finished difference Result 46 states and 51 transitions. [2018-12-08 09:20:01,433 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-08 09:20:01,434 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 46 states and 51 transitions. [2018-12-08 09:20:01,434 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-12-08 09:20:01,435 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 46 states to 36 states and 39 transitions. [2018-12-08 09:20:01,435 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2018-12-08 09:20:01,435 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2018-12-08 09:20:01,435 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 39 transitions. [2018-12-08 09:20:01,435 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-08 09:20:01,435 INFO L705 BuchiCegarLoop]: Abstraction has 36 states and 39 transitions. [2018-12-08 09:20:01,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states and 39 transitions. [2018-12-08 09:20:01,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 27. [2018-12-08 09:20:01,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-12-08 09:20:01,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2018-12-08 09:20:01,436 INFO L728 BuchiCegarLoop]: Abstraction has 27 states and 30 transitions. [2018-12-08 09:20:01,436 INFO L608 BuchiCegarLoop]: Abstraction has 27 states and 30 transitions. [2018-12-08 09:20:01,436 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-12-08 09:20:01,436 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27 states and 30 transitions. [2018-12-08 09:20:01,437 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-12-08 09:20:01,437 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-08 09:20:01,437 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-08 09:20:01,437 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 09:20:01,437 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-12-08 09:20:01,437 INFO L794 eck$LassoCheckResult]: Stem: 513#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0]; 507#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; 508#L519 assume !(main_~in_len~0 < 1);call main_#t~malloc10.base, main_#t~malloc10.offset := #Ultimate.alloc(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; 518#L523 assume !(main_~out_len~0 < 1);call main_#t~malloc12.base, main_#t~malloc12.offset := #Ultimate.alloc(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; 522#L510-4 call strcspn_#t~mem8 := read~int(strcspn_~s.base, strcspn_~s.offset, 1); 516#L510-1 assume !!(0 != strcspn_#t~mem8);havoc strcspn_#t~mem8;strcspn_~i~0 := 0; 517#L511-4 call strcspn_#t~mem6 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 511#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); 512#L512 assume !(strcspn_#t~mem4 == strcspn_#t~mem5);havoc strcspn_#t~mem4;havoc strcspn_#t~mem5; 520#L511-3 strcspn_#t~pre3 := 1 + strcspn_~i~0;strcspn_~i~0 := 1 + strcspn_~i~0;havoc strcspn_#t~pre3; 521#L511-4 call strcspn_#t~mem6 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 527#L511-1 assume !(0 != strcspn_#t~mem6);havoc strcspn_#t~mem6; 526#L511-5 strcspn_#t~pre7 := 1 + strcspn_~l~0;strcspn_~l~0 := 1 + strcspn_~l~0;havoc strcspn_#t~pre7; 523#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; 524#L510-4 call strcspn_#t~mem8 := read~int(strcspn_~s.base, strcspn_~s.offset, 1); 514#L510-1 assume !!(0 != strcspn_#t~mem8);havoc strcspn_#t~mem8;strcspn_~i~0 := 0; 515#L511-4 [2018-12-08 09:20:01,437 INFO L796 eck$LassoCheckResult]: Loop: 515#L511-4 call strcspn_#t~mem6 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 509#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); 510#L512 assume !(strcspn_#t~mem4 == strcspn_#t~mem5);havoc strcspn_#t~mem4;havoc strcspn_#t~mem5; 519#L511-3 strcspn_#t~pre3 := 1 + strcspn_~i~0;strcspn_~i~0 := 1 + strcspn_~i~0;havoc strcspn_#t~pre3; 515#L511-4 [2018-12-08 09:20:01,437 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 09:20:01,437 INFO L82 PathProgramCache]: Analyzing trace with hash 1375356158, now seen corresponding path program 2 times [2018-12-08 09:20:01,437 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 09:20:01,438 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 09:20:01,438 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 09:20:01,438 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 09:20:01,438 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 09:20:01,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 09:20:01,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 09:20:01,454 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 09:20:01,455 INFO L82 PathProgramCache]: Analyzing trace with hash 1698248, now seen corresponding path program 3 times [2018-12-08 09:20:01,455 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 09:20:01,455 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 09:20:01,455 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 09:20:01,456 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 09:20:01,456 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 09:20:01,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 09:20:01,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 09:20:01,460 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 09:20:01,460 INFO L82 PathProgramCache]: Analyzing trace with hash -1858115515, now seen corresponding path program 3 times [2018-12-08 09:20:01,460 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 09:20:01,460 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 09:20:01,461 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 09:20:01,461 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 09:20:01,461 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 09:20:01,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 09:20:01,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 09:20:01,887 WARN L180 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 138 [2018-12-08 09:20:01,973 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 09:20:01,973 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 09:20:01,973 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 09:20:01,973 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 09:20:01,973 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-08 09:20:01,973 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 09:20:01,974 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 09:20:01,974 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 09:20:01,974 INFO L131 ssoRankerPreferences]: Filename of dumped script: strcspn_true-termination.c.i_Iteration5_Lasso [2018-12-08 09:20:01,974 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 09:20:01,974 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 09:20:01,977 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:20:01,979 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:20:01,979 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:20:01,980 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:20:01,981 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:20:01,985 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:20:01,986 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:20:01,987 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:20:01,988 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:20:01,989 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:20:01,990 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:20:01,991 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:20:01,992 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:20:01,993 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:20:01,994 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:20:01,994 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:20:01,995 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:20:01,997 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:20:02,256 WARN L180 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 85 [2018-12-08 09:20:02,321 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:20:02,643 WARN L180 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 36 [2018-12-08 09:20:02,735 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 09:20:02,735 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-08 09:20:02,735 INFO L122 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 [2018-12-08 09:20:02,736 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 09:20:02,736 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 09:20:02,736 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 09:20:02,736 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 09:20:02,736 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-08 09:20:02,737 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-08 09:20:02,738 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 09:20:02,738 INFO L122 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 [2018-12-08 09:20:02,738 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 09:20:02,738 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 09:20:02,739 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 09:20:02,739 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 09:20:02,739 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 09:20:02,739 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 09:20:02,739 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 09:20:02,739 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 09:20:02,740 INFO L122 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 [2018-12-08 09:20:02,740 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 09:20:02,740 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 09:20:02,740 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 09:20:02,740 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 09:20:02,740 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 09:20:02,740 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 09:20:02,740 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 09:20:02,741 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 09:20:02,741 INFO L122 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 [2018-12-08 09:20:02,741 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 09:20:02,741 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 09:20:02,741 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 09:20:02,741 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 09:20:02,741 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 09:20:02,742 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 09:20:02,742 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 09:20:02,742 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 09:20:02,742 INFO L122 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 [2018-12-08 09:20:02,742 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 09:20:02,742 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 09:20:02,743 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 09:20:02,743 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 09:20:02,743 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 09:20:02,743 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 09:20:02,743 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 09:20:02,743 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 09:20:02,743 INFO L122 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 [2018-12-08 09:20:02,744 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 09:20:02,744 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 09:20:02,744 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 09:20:02,744 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 09:20:02,744 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-08 09:20:02,744 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-08 09:20:02,745 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 09:20:02,745 INFO L122 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 [2018-12-08 09:20:02,746 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 09:20:02,746 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 09:20:02,746 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 09:20:02,746 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 09:20:02,746 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-08 09:20:02,747 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-08 09:20:02,747 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 09:20:02,747 INFO L122 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 [2018-12-08 09:20:02,748 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 09:20:02,748 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 09:20:02,748 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 09:20:02,748 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 09:20:02,748 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 09:20:02,748 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 09:20:02,748 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 09:20:02,749 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 09:20:02,749 INFO L122 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 [2018-12-08 09:20:02,749 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 09:20:02,749 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 09:20:02,749 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 09:20:02,749 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 09:20:02,750 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-08 09:20:02,750 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-08 09:20:02,751 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 09:20:02,751 INFO L122 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 [2018-12-08 09:20:02,751 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 09:20:02,751 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 09:20:02,751 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 09:20:02,752 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 09:20:02,752 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 09:20:02,752 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 09:20:02,752 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 09:20:02,752 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 09:20:02,752 INFO L122 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 [2018-12-08 09:20:02,753 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 09:20:02,753 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 09:20:02,753 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 09:20:02,753 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 09:20:02,753 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 09:20:02,753 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 09:20:02,753 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 09:20:02,754 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 09:20:02,754 INFO L122 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 [2018-12-08 09:20:02,754 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 09:20:02,754 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 09:20:02,754 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 09:20:02,755 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 09:20:02,755 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 09:20:02,755 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 09:20:02,755 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 09:20:02,755 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 09:20:02,756 INFO L122 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 [2018-12-08 09:20:02,756 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 09:20:02,756 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 09:20:02,756 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 09:20:02,756 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 09:20:02,756 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 09:20:02,756 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 09:20:02,757 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 09:20:02,757 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 09:20:02,757 INFO L122 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 [2018-12-08 09:20:02,757 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 09:20:02,757 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 09:20:02,758 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 09:20:02,758 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 09:20:02,758 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 09:20:02,758 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 09:20:02,758 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 09:20:02,758 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 09:20:02,759 INFO L122 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 [2018-12-08 09:20:02,759 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 09:20:02,759 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 09:20:02,759 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 09:20:02,759 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 09:20:02,759 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 09:20:02,759 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 09:20:02,759 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 09:20:02,760 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 09:20:02,760 INFO L122 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 [2018-12-08 09:20:02,760 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 09:20:02,760 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 09:20:02,761 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 09:20:02,761 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 09:20:02,761 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 09:20:02,761 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 09:20:02,761 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 09:20:02,761 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 09:20:02,762 INFO L122 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 [2018-12-08 09:20:02,762 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 09:20:02,762 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 09:20:02,762 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 09:20:02,762 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 09:20:02,763 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-08 09:20:02,763 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-08 09:20:02,764 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 09:20:02,764 INFO L122 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 [2018-12-08 09:20:02,765 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 09:20:02,765 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 09:20:02,765 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 09:20:02,765 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 09:20:02,765 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-08 09:20:02,765 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-08 09:20:02,766 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 09:20:02,767 INFO L122 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 [2018-12-08 09:20:02,767 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 09:20:02,767 INFO L205 nArgumentSynthesizer]: 2 stem disjuncts [2018-12-08 09:20:02,767 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 09:20:02,767 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 09:20:02,768 INFO L402 nArgumentSynthesizer]: We have 8 Motzkin's Theorem applications. [2018-12-08 09:20:02,768 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-08 09:20:02,772 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 09:20:02,773 INFO L122 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 [2018-12-08 09:20:02,773 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 09:20:02,773 INFO L205 nArgumentSynthesizer]: 12 stem disjuncts [2018-12-08 09:20:02,773 INFO L206 nArgumentSynthesizer]: 4 loop disjuncts [2018-12-08 09:20:02,773 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 09:20:02,783 INFO L402 nArgumentSynthesizer]: We have 136 Motzkin's Theorem applications. [2018-12-08 09:20:02,783 INFO L403 nArgumentSynthesizer]: A total of 8 supporting invariants were added. [2018-12-08 09:20:02,821 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 09:20:02,822 INFO L122 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 [2018-12-08 09:20:02,822 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 09:20:02,822 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 09:20:02,822 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 09:20:02,822 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 09:20:02,825 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-08 09:20:02,825 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-08 09:20:02,836 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-08 09:20:02,850 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2018-12-08 09:20:02,850 INFO L444 ModelExtractionUtils]: 42 out of 49 variables were initially zero. Simplification set additionally 4 variables to zero. [2018-12-08 09:20:02,850 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-08 09:20:02,851 INFO L440 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2018-12-08 09:20:02,851 INFO L518 LassoAnalysis]: Proved termination. [2018-12-08 09:20:02,851 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_strcspn_~i~0, v_rep(select #length ULTIMATE.start_strcspn_~reject.base)_3) = -2*ULTIMATE.start_strcspn_~i~0 + 3*v_rep(select #length ULTIMATE.start_strcspn_~reject.base)_3 Supporting invariants [] [2018-12-08 09:20:02,943 INFO L297 tatePredicateManager]: 34 out of 35 supporting invariants were superfluous and have been removed [2018-12-08 09:20:02,945 WARN L1298 BoogieBacktranslator]: unknown boogie variable #length [2018-12-08 09:20:02,959 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 09:20:02,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 09:20:02,969 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 09:20:02,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 09:20:02,994 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 09:20:03,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 09:20:03,020 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 [2018-12-08 09:20:03,020 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27 states and 30 transitions. cyclomatic complexity: 6 Second operand 7 states. [2018-12-08 09:20:03,046 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. [2018-12-08 09:20:03,047 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 [2018-12-08 09:20:03,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-12-08 09:20:03,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 6 transitions. [2018-12-08 09:20:03,047 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 16 letters. Loop has 4 letters. [2018-12-08 09:20:03,047 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 09:20:03,047 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-12-08 09:20:03,065 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 09:20:03,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 09:20:03,076 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 09:20:03,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 09:20:03,103 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 09:20:03,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 09:20:03,131 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 [2018-12-08 09:20:03,131 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27 states and 30 transitions. cyclomatic complexity: 6 Second operand 7 states. [2018-12-08 09:20:03,156 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. [2018-12-08 09:20:03,156 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 [2018-12-08 09:20:03,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-12-08 09:20:03,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 6 transitions. [2018-12-08 09:20:03,157 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 16 letters. Loop has 4 letters. [2018-12-08 09:20:03,157 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 09:20:03,157 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-12-08 09:20:03,176 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 09:20:03,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 09:20:03,187 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 09:20:03,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 09:20:03,217 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 09:20:03,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 09:20:03,249 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 [2018-12-08 09:20:03,249 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27 states and 30 transitions. cyclomatic complexity: 6 Second operand 7 states. [2018-12-08 09:20:03,336 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. [2018-12-08 09:20:03,336 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 [2018-12-08 09:20:03,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-12-08 09:20:03,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 40 transitions. [2018-12-08 09:20:03,337 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 40 transitions. Stem has 16 letters. Loop has 4 letters. [2018-12-08 09:20:03,337 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 09:20:03,337 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 40 transitions. Stem has 20 letters. Loop has 4 letters. [2018-12-08 09:20:03,337 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 09:20:03,337 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 40 transitions. Stem has 16 letters. Loop has 8 letters. [2018-12-08 09:20:03,337 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 09:20:03,337 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 56 states and 63 transitions. [2018-12-08 09:20:03,338 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-12-08 09:20:03,338 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 56 states to 42 states and 46 transitions. [2018-12-08 09:20:03,338 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2018-12-08 09:20:03,338 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2018-12-08 09:20:03,338 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 46 transitions. [2018-12-08 09:20:03,338 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-08 09:20:03,338 INFO L705 BuchiCegarLoop]: Abstraction has 42 states and 46 transitions. [2018-12-08 09:20:03,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states and 46 transitions. [2018-12-08 09:20:03,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 37. [2018-12-08 09:20:03,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-12-08 09:20:03,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2018-12-08 09:20:03,340 INFO L728 BuchiCegarLoop]: Abstraction has 37 states and 41 transitions. [2018-12-08 09:20:03,340 INFO L608 BuchiCegarLoop]: Abstraction has 37 states and 41 transitions. [2018-12-08 09:20:03,340 INFO L442 BuchiCegarLoop]: ======== Iteration 6============ [2018-12-08 09:20:03,340 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 37 states and 41 transitions. [2018-12-08 09:20:03,341 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-12-08 09:20:03,341 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-08 09:20:03,341 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-08 09:20:03,341 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2018-12-08 09:20:03,341 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-12-08 09:20:03,341 INFO L794 eck$LassoCheckResult]: Stem: 1044#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0]; 1038#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; 1039#L519 assume !(main_~in_len~0 < 1);call main_#t~malloc10.base, main_#t~malloc10.offset := #Ultimate.alloc(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; 1049#L523 assume !(main_~out_len~0 < 1);call main_#t~malloc12.base, main_#t~malloc12.offset := #Ultimate.alloc(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; 1053#L510-4 call strcspn_#t~mem8 := read~int(strcspn_~s.base, strcspn_~s.offset, 1); 1058#L510-1 assume !!(0 != strcspn_#t~mem8);havoc strcspn_#t~mem8;strcspn_~i~0 := 0; 1069#L511-4 call strcspn_#t~mem6 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 1066#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); 1068#L512 assume !(strcspn_#t~mem4 == strcspn_#t~mem5);havoc strcspn_#t~mem4;havoc strcspn_#t~mem5; 1067#L511-3 strcspn_#t~pre3 := 1 + strcspn_~i~0;strcspn_~i~0 := 1 + strcspn_~i~0;havoc strcspn_#t~pre3; 1065#L511-4 call strcspn_#t~mem6 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 1064#L511-1 assume !(0 != strcspn_#t~mem6);havoc strcspn_#t~mem6; 1063#L511-5 strcspn_#t~pre7 := 1 + strcspn_~l~0;strcspn_~l~0 := 1 + strcspn_~l~0;havoc strcspn_#t~pre7; 1054#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; 1055#L510-4 call strcspn_#t~mem8 := read~int(strcspn_~s.base, strcspn_~s.offset, 1); 1047#L510-1 assume !!(0 != strcspn_#t~mem8);havoc strcspn_#t~mem8;strcspn_~i~0 := 0; 1048#L511-4 call strcspn_#t~mem6 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 1042#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); 1043#L512 assume !(strcspn_#t~mem4 == strcspn_#t~mem5);havoc strcspn_#t~mem4;havoc strcspn_#t~mem5; 1051#L511-3 strcspn_#t~pre3 := 1 + strcspn_~i~0;strcspn_~i~0 := 1 + strcspn_~i~0;havoc strcspn_#t~pre3; 1052#L511-4 call strcspn_#t~mem6 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 1070#L511-1 assume !(0 != strcspn_#t~mem6);havoc strcspn_#t~mem6; 1059#L511-5 strcspn_#t~pre7 := 1 + strcspn_~l~0;strcspn_~l~0 := 1 + strcspn_~l~0;havoc strcspn_#t~pre7; 1060#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; 1061#L510-4 call strcspn_#t~mem8 := read~int(strcspn_~s.base, strcspn_~s.offset, 1); 1045#L510-1 assume !!(0 != strcspn_#t~mem8);havoc strcspn_#t~mem8;strcspn_~i~0 := 0; 1046#L511-4 [2018-12-08 09:20:03,341 INFO L796 eck$LassoCheckResult]: Loop: 1046#L511-4 call strcspn_#t~mem6 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 1040#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); 1041#L512 assume !(strcspn_#t~mem4 == strcspn_#t~mem5);havoc strcspn_#t~mem4;havoc strcspn_#t~mem5; 1050#L511-3 strcspn_#t~pre3 := 1 + strcspn_~i~0;strcspn_~i~0 := 1 + strcspn_~i~0;havoc strcspn_#t~pre3; 1046#L511-4 [2018-12-08 09:20:03,341 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 09:20:03,341 INFO L82 PathProgramCache]: Analyzing trace with hash 1550213327, now seen corresponding path program 4 times [2018-12-08 09:20:03,341 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 09:20:03,341 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 09:20:03,342 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 09:20:03,342 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 09:20:03,342 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 09:20:03,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 09:20:03,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 09:20:03,353 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 09:20:03,353 INFO L82 PathProgramCache]: Analyzing trace with hash 1698248, now seen corresponding path program 4 times [2018-12-08 09:20:03,354 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 09:20:03,354 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 09:20:03,354 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 09:20:03,354 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 09:20:03,354 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 09:20:03,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 09:20:03,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 09:20:03,357 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 09:20:03,357 INFO L82 PathProgramCache]: Analyzing trace with hash 229061526, now seen corresponding path program 5 times [2018-12-08 09:20:03,357 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 09:20:03,357 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 09:20:03,357 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 09:20:03,358 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 09:20:03,358 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 09:20:03,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 09:20:03,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 09:20:03,855 WARN L180 SmtUtils]: Spent 453.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 171 [2018-12-08 09:20:03,951 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 09:20:03,952 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 09:20:03,952 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 09:20:03,952 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 09:20:03,952 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-08 09:20:03,952 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 09:20:03,952 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 09:20:03,952 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 09:20:03,952 INFO L131 ssoRankerPreferences]: Filename of dumped script: strcspn_true-termination.c.i_Iteration6_Lasso [2018-12-08 09:20:03,952 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 09:20:03,952 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 09:20:03,954 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:20:04,240 WARN L180 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 90 [2018-12-08 09:20:04,303 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:20:04,304 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:20:04,306 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:20:04,306 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:20:04,307 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:20:04,308 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:20:04,309 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:20:04,310 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:20:04,311 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:20:04,312 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:20:04,312 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:20:04,313 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:20:04,315 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:20:04,316 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:20:04,316 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:20:04,317 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:20:04,318 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:20:04,319 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 09:20:04,489 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-12-08 09:20:05,280 WARN L180 SmtUtils]: Spent 675.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 69 [2018-12-08 09:20:05,312 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 09:20:05,312 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-08 09:20:05,312 INFO L122 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 [2018-12-08 09:20:05,312 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 09:20:05,312 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 09:20:05,312 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 09:20:05,312 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 09:20:05,313 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-08 09:20:05,313 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-08 09:20:05,313 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 09:20:05,314 INFO L122 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 [2018-12-08 09:20:05,314 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 09:20:05,314 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 09:20:05,314 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 09:20:05,314 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 09:20:05,314 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-08 09:20:05,314 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-08 09:20:05,316 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 09:20:05,316 INFO L122 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 [2018-12-08 09:20:05,316 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 09:20:05,316 INFO L205 nArgumentSynthesizer]: 2 stem disjuncts [2018-12-08 09:20:05,316 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 09:20:05,316 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 09:20:05,317 INFO L402 nArgumentSynthesizer]: We have 8 Motzkin's Theorem applications. [2018-12-08 09:20:05,317 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-08 09:20:05,319 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 09:20:05,319 INFO L122 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 [2018-12-08 09:20:05,320 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 09:20:05,320 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 09:20:05,320 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 09:20:05,320 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 09:20:05,320 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-08 09:20:05,320 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-08 09:20:05,321 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 09:20:05,321 INFO L122 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 [2018-12-08 09:20:05,321 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 09:20:05,321 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 09:20:05,321 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 09:20:05,321 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 09:20:05,322 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-08 09:20:05,323 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-08 09:20:05,332 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-08 09:20:05,343 INFO L443 ModelExtractionUtils]: Simplification made 6 calls to the SMT solver. [2018-12-08 09:20:05,343 INFO L444 ModelExtractionUtils]: 42 out of 49 variables were initially zero. Simplification set additionally 3 variables to zero. [2018-12-08 09:20:05,344 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-08 09:20:05,344 INFO L440 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2018-12-08 09:20:05,344 INFO L518 LassoAnalysis]: Proved termination. [2018-12-08 09:20:05,344 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_strcspn_~i~0, ULTIMATE.start_strcspn_~reject.offset, v_rep(select #length ULTIMATE.start_strcspn_~reject.base)_4) = -1*ULTIMATE.start_strcspn_~i~0 - 1*ULTIMATE.start_strcspn_~reject.offset + 1*v_rep(select #length ULTIMATE.start_strcspn_~reject.base)_4 Supporting invariants [] [2018-12-08 09:20:05,421 INFO L297 tatePredicateManager]: 36 out of 36 supporting invariants were superfluous and have been removed [2018-12-08 09:20:05,422 WARN L1298 BoogieBacktranslator]: unknown boogie variable #length [2018-12-08 09:20:05,428 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 09:20:05,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 09:20:05,440 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 09:20:05,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 09:20:05,444 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 09:20:05,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 09:20:05,454 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 [2018-12-08 09:20:05,454 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 37 states and 41 transitions. cyclomatic complexity: 8 Second operand 3 states. [2018-12-08 09:20:05,464 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 37 states and 41 transitions. cyclomatic complexity: 8. Second operand 3 states. Result 45 states and 50 transitions. Complement of second has 5 states. [2018-12-08 09:20:05,465 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 [2018-12-08 09:20:05,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-08 09:20:05,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 14 transitions. [2018-12-08 09:20:05,465 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 26 letters. Loop has 4 letters. [2018-12-08 09:20:05,465 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 09:20:05,465 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-12-08 09:20:05,473 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 09:20:05,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 09:20:05,487 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 09:20:05,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 09:20:05,492 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 09:20:05,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 09:20:05,501 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2018-12-08 09:20:05,501 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 37 states and 41 transitions. cyclomatic complexity: 8 Second operand 3 states. [2018-12-08 09:20:05,509 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 37 states and 41 transitions. cyclomatic complexity: 8. Second operand 3 states. Result 45 states and 50 transitions. Complement of second has 5 states. [2018-12-08 09:20:05,509 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 [2018-12-08 09:20:05,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-08 09:20:05,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 14 transitions. [2018-12-08 09:20:05,510 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 26 letters. Loop has 4 letters. [2018-12-08 09:20:05,510 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 09:20:05,510 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-12-08 09:20:05,517 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 09:20:05,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 09:20:05,529 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 09:20:05,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 09:20:05,534 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 09:20:05,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 09:20:05,540 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-12-08 09:20:05,540 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 37 states and 41 transitions. cyclomatic complexity: 8 Second operand 3 states. [2018-12-08 09:20:05,548 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 37 states and 41 transitions. cyclomatic complexity: 8. Second operand 3 states. Result 62 states and 71 transitions. Complement of second has 4 states. [2018-12-08 09:20:05,549 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 [2018-12-08 09:20:05,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-08 09:20:05,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 22 transitions. [2018-12-08 09:20:05,549 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 22 transitions. Stem has 26 letters. Loop has 4 letters. [2018-12-08 09:20:05,549 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 09:20:05,550 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 22 transitions. Stem has 30 letters. Loop has 4 letters. [2018-12-08 09:20:05,550 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 09:20:05,550 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 22 transitions. Stem has 26 letters. Loop has 8 letters. [2018-12-08 09:20:05,550 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 09:20:05,550 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 62 states and 71 transitions. [2018-12-08 09:20:05,552 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-12-08 09:20:05,552 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 62 states to 0 states and 0 transitions. [2018-12-08 09:20:05,552 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-12-08 09:20:05,552 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-12-08 09:20:05,552 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-12-08 09:20:05,552 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-12-08 09:20:05,552 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-08 09:20:05,552 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-08 09:20:05,552 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-08 09:20:05,552 INFO L442 BuchiCegarLoop]: ======== Iteration 7============ [2018-12-08 09:20:05,552 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-12-08 09:20:05,552 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-12-08 09:20:05,552 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-12-08 09:20:05,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 08.12 09:20:05 BoogieIcfgContainer [2018-12-08 09:20:05,556 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-12-08 09:20:05,556 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-08 09:20:05,556 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-08 09:20:05,557 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-08 09:20:05,557 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 09:19:58" (3/4) ... [2018-12-08 09:20:05,559 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-08 09:20:05,559 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-08 09:20:05,560 INFO L168 Benchmark]: Toolchain (without parser) took 7211.17 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 384.3 MB). Free memory was 950.6 MB in the beginning and 1.1 GB in the end (delta: -110.9 MB). Peak memory consumption was 273.4 MB. Max. memory is 11.5 GB. [2018-12-08 09:20:05,560 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 976.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 09:20:05,560 INFO L168 Benchmark]: CACSL2BoogieTranslator took 260.34 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 125.8 MB). Free memory was 950.6 MB in the beginning and 1.1 GB in the end (delta: -159.1 MB). Peak memory consumption was 24.9 MB. Max. memory is 11.5 GB. [2018-12-08 09:20:05,561 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.68 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 11.5 GB. [2018-12-08 09:20:05,561 INFO L168 Benchmark]: Boogie Preprocessor took 14.95 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 09:20:05,561 INFO L168 Benchmark]: RCFGBuilder took 154.20 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.4 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. [2018-12-08 09:20:05,562 INFO L168 Benchmark]: BuchiAutomizer took 6750.30 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 258.5 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.3 MB). Peak memory consumption was 284.8 MB. Max. memory is 11.5 GB. [2018-12-08 09:20:05,562 INFO L168 Benchmark]: Witness Printer took 2.84 ms. Allocated memory is still 1.4 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 09:20:05,564 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 976.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 260.34 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 125.8 MB). Free memory was 950.6 MB in the beginning and 1.1 GB in the end (delta: -159.1 MB). Peak memory consumption was 24.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 25.68 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 14.95 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 154.20 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.4 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 6750.30 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 258.5 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.3 MB). Peak memory consumption was 284.8 MB. Max. memory is 11.5 GB. * Witness Printer took 2.84 ms. Allocated memory is still 1.4 GB. Free memory is still 1.1 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 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 6 terminating modules (2 trivial, 2 deterministic, 2 nondeterministic). One deterministic module has affine ranking function unknown-#length-unknown[__builtin_alloca (in_len)] + -1 * s and consists of 4 locations. One deterministic module has affine ranking function unknown-#length-unknown[reject] + -1 * reject + -1 * i and consists of 3 locations. One nondeterministic module has affine ranking function -2 * i + 3 * unknown-#length-unknown[reject] and consists of 8 locations. One nondeterministic module has affine ranking function -1 * i + -1 * reject + unknown-#length-unknown[reject] and consists of 3 locations. 2 modules have a trivial ranking function, the largest among these consists of 13 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 6.7s and 7 iterations. TraceHistogramMax:4. Analysis of lassos took 5.8s. Construction of modules took 0.0s. Büchi inclusion checks took 0.6s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 19 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 37 states and ocurred in iteration 5. Nontrivial modules had stage [2, 0, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 114 SDtfs, 168 SDslu, 100 SDs, 0 SdLazy, 136 SolverSat, 32 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT0 conc1 concLT0 SILN0 SILU0 SILI0 SILT0 lasso4 LassoPreprocessingBenchmarks: Lassos: inital252 mio100 ax100 hnf99 lsp94 ukn78 mio100 lsp37 div100 bol100 ite100 ukn100 eq183 hnf89 smp96 dnf466 smp77 tf100 neg91 sie120 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 48ms VariablesStem: 4 VariablesLoop: 2 DisjunctsStem: 12 DisjunctsLoop: 4 SupportingInvariants: 8 MotzkinApplications: 136 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...