./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/array-memsafety/openbsd_cstrnlen-alloca-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/array-memsafety/openbsd_cstrnlen-alloca-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7ac509d7b3f1ef173e01ced3ce9249a58ee1c04d .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 08:18:46,227 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 08:18:46,230 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 08:18:46,254 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 08:18:46,254 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 08:18:46,256 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 08:18:46,257 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 08:18:46,259 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 08:18:46,261 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 08:18:46,261 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 08:18:46,262 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 08:18:46,264 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 08:18:46,264 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 08:18:46,265 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 08:18:46,267 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 08:18:46,268 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 08:18:46,270 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 08:18:46,271 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 08:18:46,276 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 08:18:46,281 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 08:18:46,284 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 08:18:46,293 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 08:18:46,294 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 08:18:46,295 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 08:18:46,301 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 08:18:46,302 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 08:18:46,303 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 08:18:46,304 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 08:18:46,304 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 08:18:46,306 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 08:18:46,306 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 08:18:46,307 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 08:18:46,308 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 08:18:46,309 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 08:18:46,311 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 08:18:46,311 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 08:18:46,312 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 08:18:46,312 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 08:18:46,312 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 08:18:46,320 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 08:18:46,321 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 08:18:46,325 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-10-20 08:18:46,369 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 08:18:46,370 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 08:18:46,377 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 08:18:46,378 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 08:18:46,378 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 08:18:46,378 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-20 08:18:46,378 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-20 08:18:46,379 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-20 08:18:46,379 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-20 08:18:46,379 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-20 08:18:46,379 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-20 08:18:46,380 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 08:18:46,380 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 08:18:46,380 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 08:18:46,380 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 08:18:46,381 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 08:18:46,381 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 08:18:46,381 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-20 08:18:46,381 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-20 08:18:46,382 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-20 08:18:46,382 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 08:18:46,382 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 08:18:46,382 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-20 08:18:46,383 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 08:18:46,383 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-20 08:18:46,383 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 08:18:46,383 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 08:18:46,384 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-20 08:18:46,384 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 08:18:46,384 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 08:18:46,384 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 08:18:46,385 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-20 08:18:46,386 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-20 08:18:46,386 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7ac509d7b3f1ef173e01ced3ce9249a58ee1c04d [2020-10-20 08:18:46,577 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 08:18:46,598 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 08:18:46,603 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 08:18:46,605 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 08:18:46,607 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 08:18:46,608 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/openbsd_cstrnlen-alloca-1.i [2020-10-20 08:18:46,697 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf4e7a2dc/62a4482af5d243d5b3f1d71d24b4bafd/FLAG19b4d1a6f [2020-10-20 08:18:47,192 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 08:18:47,193 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/openbsd_cstrnlen-alloca-1.i [2020-10-20 08:18:47,210 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf4e7a2dc/62a4482af5d243d5b3f1d71d24b4bafd/FLAG19b4d1a6f [2020-10-20 08:18:47,513 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf4e7a2dc/62a4482af5d243d5b3f1d71d24b4bafd [2020-10-20 08:18:47,517 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 08:18:47,523 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 08:18:47,524 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 08:18:47,525 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 08:18:47,528 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 08:18:47,529 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 08:18:47" (1/1) ... [2020-10-20 08:18:47,532 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7db9ba7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 08:18:47, skipping insertion in model container [2020-10-20 08:18:47,533 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 08:18:47" (1/1) ... [2020-10-20 08:18:47,540 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 08:18:47,579 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 08:18:47,958 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 08:18:47,970 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 08:18:48,030 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 08:18:48,090 INFO L208 MainTranslator]: Completed translation [2020-10-20 08:18:48,091 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 08:18:48 WrapperNode [2020-10-20 08:18:48,091 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 08:18:48,092 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 08:18:48,092 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 08:18:48,093 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 08:18:48,102 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 08:18:48" (1/1) ... [2020-10-20 08:18:48,118 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 08:18:48" (1/1) ... [2020-10-20 08:18:48,143 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 08:18:48,143 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 08:18:48,144 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 08:18:48,144 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 08:18:48,154 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 08:18:48" (1/1) ... [2020-10-20 08:18:48,154 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 08:18:48" (1/1) ... [2020-10-20 08:18:48,157 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 08:18:48" (1/1) ... [2020-10-20 08:18:48,158 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 08:18:48" (1/1) ... [2020-10-20 08:18:48,165 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 08:18:48" (1/1) ... [2020-10-20 08:18:48,170 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 08:18:48" (1/1) ... [2020-10-20 08:18:48,172 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 08:18:48" (1/1) ... [2020-10-20 08:18:48,175 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 08:18:48,176 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 08:18:48,176 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 08:18:48,176 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 08:18:48,177 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 08:18:48" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-20 08:18:48,243 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-20 08:18:48,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 08:18:48,243 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 08:18:48,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 08:18:48,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 08:18:48,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 08:18:48,576 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 08:18:48,576 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-20 08:18:48,581 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 08:18:48 BoogieIcfgContainer [2020-10-20 08:18:48,581 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 08:18:48,582 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-20 08:18:48,585 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-20 08:18:48,589 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-20 08:18:48,593 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 08:18:48,594 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.10 08:18:47" (1/3) ... [2020-10-20 08:18:48,595 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6f9eddf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.10 08:18:48, skipping insertion in model container [2020-10-20 08:18:48,595 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 08:18:48,596 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 08:18:48" (2/3) ... [2020-10-20 08:18:48,596 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6f9eddf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.10 08:18:48, skipping insertion in model container [2020-10-20 08:18:48,596 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 08:18:48,596 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 08:18:48" (3/3) ... [2020-10-20 08:18:48,603 INFO L373 chiAutomizerObserver]: Analyzing ICFG openbsd_cstrnlen-alloca-1.i [2020-10-20 08:18:48,661 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-20 08:18:48,661 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-20 08:18:48,662 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-20 08:18:48,662 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 08:18:48,662 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 08:18:48,662 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-20 08:18:48,662 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 08:18:48,663 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-20 08:18:48,677 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states. [2020-10-20 08:18:48,699 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2020-10-20 08:18:48,700 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 08:18:48,700 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 08:18:48,707 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2020-10-20 08:18:48,707 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-20 08:18:48,707 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-10-20 08:18:48,708 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states. [2020-10-20 08:18:48,709 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2020-10-20 08:18:48,710 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 08:18:48,710 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 08:18:48,710 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2020-10-20 08:18:48,710 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-20 08:18:48,717 INFO L794 eck$LassoCheckResult]: Stem: 12#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 10#L-1true havoc main_#res;havoc main_#t~nondet6, main_#t~nondet7, main_#t~malloc8.base, main_#t~malloc8.offset, main_#t~nondet10, main_#t~post9, main_~i~0, main_#t~ret11, main_~length1~0, main_~n~0, main_~nondetString1~0.base, main_~nondetString1~0.offset;main_~length1~0 := main_#t~nondet6;havoc main_#t~nondet6;main_~n~0 := main_#t~nondet7;havoc main_#t~nondet7; 6#L524true assume !(main_~length1~0 < 1); 8#L524-2true assume !(main_~n~0 < 1); 4#L527-1true call main_#t~malloc8.base, main_#t~malloc8.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc8.base, main_#t~malloc8.offset;main_~i~0 := 0; 16#L532-3true [2020-10-20 08:18:48,717 INFO L796 eck$LassoCheckResult]: Loop: 16#L532-3true assume !!(main_~i~0 < main_~length1~0 - 1);call write~int(main_#t~nondet10, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet10; 13#L532-2true main_#t~post9 := main_~i~0;main_~i~0 := 1 + main_#t~post9;havoc main_#t~post9; 16#L532-3true [2020-10-20 08:18:48,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 08:18:48,724 INFO L82 PathProgramCache]: Analyzing trace with hash 28695878, now seen corresponding path program 1 times [2020-10-20 08:18:48,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 08:18:48,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329003896] [2020-10-20 08:18:48,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 08:18:48,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:18:48,835 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:18:48,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:18:48,848 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:18:48,870 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 08:18:48,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 08:18:48,872 INFO L82 PathProgramCache]: Analyzing trace with hash 1699, now seen corresponding path program 1 times [2020-10-20 08:18:48,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 08:18:48,872 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388999459] [2020-10-20 08:18:48,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 08:18:48,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:18:48,883 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:18:48,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:18:48,891 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:18:48,894 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 08:18:48,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 08:18:48,896 INFO L82 PathProgramCache]: Analyzing trace with hash 1806935720, now seen corresponding path program 1 times [2020-10-20 08:18:48,896 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 08:18:48,896 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110868142] [2020-10-20 08:18:48,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 08:18:48,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:18:48,918 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:18:48,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:18:48,934 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:18:48,940 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 08:18:49,157 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-10-20 08:18:49,235 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 08:18:49,236 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 08:18:49,236 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 08:18:49,236 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 08:18:49,237 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 08:18:49,237 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:18:49,237 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 08:18:49,238 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 08:18:49,238 INFO L133 ssoRankerPreferences]: Filename of dumped script: openbsd_cstrnlen-alloca-1.i_Iteration1_Lasso [2020-10-20 08:18:49,238 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 08:18:49,238 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 08:18:49,270 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 08:18:49,278 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 08:18:49,282 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 08:18:49,286 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 08:18:49,434 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 08:18:49,439 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 08:18:49,445 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 08:18:49,450 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 08:18:49,454 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 08:18:49,460 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 08:18:49,468 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 08:18:49,471 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 08:18:49,729 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 08:18:49,735 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 08:18:49,750 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 08:18:49,753 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:18:49,753 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:18:49,753 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:18:49,754 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:18:49,759 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 08:18:49,759 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:18:49,766 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:18:49,801 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 08:18:49,803 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:18:49,803 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 08:18:49,804 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:18:49,804 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:18:49,805 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:18:49,805 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 08:18:49,806 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 08:18:49,816 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 08:18:49,852 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 08:18:49,853 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:18:49,854 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 08:18:49,854 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:18:49,854 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:18:49,854 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:18:49,855 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 08:18:49,855 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 08:18:49,857 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:18:49,893 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 08:18:49,895 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:18:49,895 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:18:49,895 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:18:49,895 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:18:49,903 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 08:18:49,903 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 08:18:49,925 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:18:49,952 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 08:18:49,953 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:18:49,954 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 08:18:49,954 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:18:49,954 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:18:49,954 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:18:49,955 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 08:18:49,955 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 08:18:49,965 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:18:49,992 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 08:18:49,994 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:18:49,994 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 08:18:49,995 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:18:49,995 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:18:49,995 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:18:49,996 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 08:18:49,996 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 08:18:49,998 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:18:50,021 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 08:18:50,023 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:18:50,023 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:18:50,023 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:18:50,024 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:18:50,031 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 08:18:50,031 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 08:18:50,036 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:18:50,060 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 08:18:50,062 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:18:50,062 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:18:50,062 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:18:50,062 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:18:50,071 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 08:18:50,071 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 08:18:50,085 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 08:18:50,136 INFO L443 ModelExtractionUtils]: Simplification made 13 calls to the SMT solver. [2020-10-20 08:18:50,136 INFO L444 ModelExtractionUtils]: 4 out of 22 variables were initially zero. Simplification set additionally 15 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:18:50,151 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 08:18:50,161 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-10-20 08:18:50,161 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 08:18:50,162 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~length1~0, ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~length1~0 - 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2020-10-20 08:18:50,208 INFO L297 tatePredicateManager]: 3 out of 3 supporting invariants were superfluous and have been removed [2020-10-20 08:18:50,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 08:18:50,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 08:18:50,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 08:18:50,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 08:18:50,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 08:18:50,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 08:18:50,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 08:18:50,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 08:18:50,348 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 [2020-10-20 08:18:50,350 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states. Second operand 3 states. [2020-10-20 08:18:50,413 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states.. Second operand 3 states. Result 39 states and 53 transitions. Complement of second has 7 states. [2020-10-20 08:18:50,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-10-20 08:18:50,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-20 08:18:50,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 35 transitions. [2020-10-20 08:18:50,419 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 35 transitions. Stem has 5 letters. Loop has 2 letters. [2020-10-20 08:18:50,421 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 08:18:50,421 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 35 transitions. Stem has 7 letters. Loop has 2 letters. [2020-10-20 08:18:50,422 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 08:18:50,422 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 35 transitions. Stem has 5 letters. Loop has 4 letters. [2020-10-20 08:18:50,423 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 08:18:50,424 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 39 states and 53 transitions. [2020-10-20 08:18:50,428 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-20 08:18:50,433 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 39 states to 13 states and 18 transitions. [2020-10-20 08:18:50,435 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2020-10-20 08:18:50,436 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2020-10-20 08:18:50,437 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 18 transitions. [2020-10-20 08:18:50,437 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-20 08:18:50,438 INFO L691 BuchiCegarLoop]: Abstraction has 13 states and 18 transitions. [2020-10-20 08:18:50,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 18 transitions. [2020-10-20 08:18:50,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-10-20 08:18:50,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-20 08:18:50,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 18 transitions. [2020-10-20 08:18:50,472 INFO L714 BuchiCegarLoop]: Abstraction has 13 states and 18 transitions. [2020-10-20 08:18:50,472 INFO L594 BuchiCegarLoop]: Abstraction has 13 states and 18 transitions. [2020-10-20 08:18:50,472 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-10-20 08:18:50,472 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 18 transitions. [2020-10-20 08:18:50,473 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-20 08:18:50,473 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 08:18:50,474 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 08:18:50,474 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-20 08:18:50,474 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-10-20 08:18:50,475 INFO L794 eck$LassoCheckResult]: Stem: 122#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 116#L-1 havoc main_#res;havoc main_#t~nondet6, main_#t~nondet7, main_#t~malloc8.base, main_#t~malloc8.offset, main_#t~nondet10, main_#t~post9, main_~i~0, main_#t~ret11, main_~length1~0, main_~n~0, main_~nondetString1~0.base, main_~nondetString1~0.offset;main_~length1~0 := main_#t~nondet6;havoc main_#t~nondet6;main_~n~0 := main_#t~nondet7;havoc main_#t~nondet7; 117#L524 assume !(main_~length1~0 < 1); 126#L524-2 assume !(main_~n~0 < 1); 120#L527-1 call main_#t~malloc8.base, main_#t~malloc8.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc8.base, main_#t~malloc8.offset;main_~i~0 := 0; 121#L532-3 assume !(main_~i~0 < main_~length1~0 - 1); 127#L532-4 call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1), 1);cstrnlen_#in~str.base, cstrnlen_#in~str.offset, cstrnlen_#in~maxlen := main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~n~0;havoc cstrnlen_#res;havoc cstrnlen_#t~post2.base, cstrnlen_#t~post2.offset, cstrnlen_#t~post3, cstrnlen_#t~mem4, cstrnlen_#t~short5, cstrnlen_~str.base, cstrnlen_~str.offset, cstrnlen_~maxlen, cstrnlen_~cp~0.base, cstrnlen_~cp~0.offset;cstrnlen_~str.base, cstrnlen_~str.offset := cstrnlen_#in~str.base, cstrnlen_#in~str.offset;cstrnlen_~maxlen := cstrnlen_#in~maxlen;havoc cstrnlen_~cp~0.base, cstrnlen_~cp~0.offset;cstrnlen_~cp~0.base, cstrnlen_~cp~0.offset := cstrnlen_~str.base, cstrnlen_~str.offset; 128#L517-6 [2020-10-20 08:18:50,475 INFO L796 eck$LassoCheckResult]: Loop: 128#L517-6 cstrnlen_#t~short5 := 0 != cstrnlen_~maxlen % 4294967296; 118#L517-1 assume cstrnlen_#t~short5;call cstrnlen_#t~mem4 := read~int(cstrnlen_~cp~0.base, cstrnlen_~cp~0.offset, 1);cstrnlen_#t~short5 := 0 != cstrnlen_#t~mem4; 119#L517-3 assume !!cstrnlen_#t~short5;havoc cstrnlen_#t~short5;havoc cstrnlen_#t~mem4; 123#L517-5 cstrnlen_#t~post2.base, cstrnlen_#t~post2.offset := cstrnlen_~cp~0.base, cstrnlen_~cp~0.offset;cstrnlen_~cp~0.base, cstrnlen_~cp~0.offset := cstrnlen_#t~post2.base, 1 + cstrnlen_#t~post2.offset;havoc cstrnlen_#t~post2.base, cstrnlen_#t~post2.offset;cstrnlen_#t~post3 := cstrnlen_~maxlen;cstrnlen_~maxlen := cstrnlen_#t~post3 - 1;havoc cstrnlen_#t~post3; 128#L517-6 [2020-10-20 08:18:50,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 08:18:50,476 INFO L82 PathProgramCache]: Analyzing trace with hash 1806935662, now seen corresponding path program 1 times [2020-10-20 08:18:50,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 08:18:50,477 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436604174] [2020-10-20 08:18:50,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 08:18:50,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:18:50,492 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:18:50,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:18:50,507 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:18:50,512 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 08:18:50,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 08:18:50,513 INFO L82 PathProgramCache]: Analyzing trace with hash 1942630, now seen corresponding path program 1 times [2020-10-20 08:18:50,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 08:18:50,514 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962164088] [2020-10-20 08:18:50,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 08:18:50,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:18:50,525 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:18:50,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:18:50,536 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:18:50,539 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 08:18:50,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 08:18:50,540 INFO L82 PathProgramCache]: Analyzing trace with hash -2087826349, now seen corresponding path program 1 times [2020-10-20 08:18:50,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 08:18:50,541 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237921153] [2020-10-20 08:18:50,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 08:18:50,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 08:18:50,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 08:18:50,731 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237921153] [2020-10-20 08:18:50,732 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 08:18:50,732 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-20 08:18:50,732 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23545506] [2020-10-20 08:18:50,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 08:18:50,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-20 08:18:50,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-20 08:18:50,832 INFO L87 Difference]: Start difference. First operand 13 states and 18 transitions. cyclomatic complexity: 7 Second operand 7 states. [2020-10-20 08:18:50,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 08:18:50,936 INFO L93 Difference]: Finished difference Result 19 states and 23 transitions. [2020-10-20 08:18:50,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-20 08:18:50,937 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 19 states and 23 transitions. [2020-10-20 08:18:50,938 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-20 08:18:50,939 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 19 states to 14 states and 17 transitions. [2020-10-20 08:18:50,939 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2020-10-20 08:18:50,939 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2020-10-20 08:18:50,939 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 17 transitions. [2020-10-20 08:18:50,939 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-20 08:18:50,940 INFO L691 BuchiCegarLoop]: Abstraction has 14 states and 17 transitions. [2020-10-20 08:18:50,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 17 transitions. [2020-10-20 08:18:50,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2020-10-20 08:18:50,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-20 08:18:50,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2020-10-20 08:18:50,942 INFO L714 BuchiCegarLoop]: Abstraction has 13 states and 16 transitions. [2020-10-20 08:18:50,942 INFO L594 BuchiCegarLoop]: Abstraction has 13 states and 16 transitions. [2020-10-20 08:18:50,942 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-10-20 08:18:50,942 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 16 transitions. [2020-10-20 08:18:50,943 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-20 08:18:50,943 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 08:18:50,943 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 08:18:50,944 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 08:18:50,944 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-10-20 08:18:50,944 INFO L794 eck$LassoCheckResult]: Stem: 172#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 168#L-1 havoc main_#res;havoc main_#t~nondet6, main_#t~nondet7, main_#t~malloc8.base, main_#t~malloc8.offset, main_#t~nondet10, main_#t~post9, main_~i~0, main_#t~ret11, main_~length1~0, main_~n~0, main_~nondetString1~0.base, main_~nondetString1~0.offset;main_~length1~0 := main_#t~nondet6;havoc main_#t~nondet6;main_~n~0 := main_#t~nondet7;havoc main_#t~nondet7; 169#L524 assume !(main_~length1~0 < 1); 176#L524-2 assume !(main_~n~0 < 1); 170#L527-1 call main_#t~malloc8.base, main_#t~malloc8.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc8.base, main_#t~malloc8.offset;main_~i~0 := 0; 171#L532-3 assume !!(main_~i~0 < main_~length1~0 - 1);call write~int(main_#t~nondet10, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet10; 174#L532-2 main_#t~post9 := main_~i~0;main_~i~0 := 1 + main_#t~post9;havoc main_#t~post9; 175#L532-3 assume !(main_~i~0 < main_~length1~0 - 1); 177#L532-4 call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1), 1);cstrnlen_#in~str.base, cstrnlen_#in~str.offset, cstrnlen_#in~maxlen := main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~n~0;havoc cstrnlen_#res;havoc cstrnlen_#t~post2.base, cstrnlen_#t~post2.offset, cstrnlen_#t~post3, cstrnlen_#t~mem4, cstrnlen_#t~short5, cstrnlen_~str.base, cstrnlen_~str.offset, cstrnlen_~maxlen, cstrnlen_~cp~0.base, cstrnlen_~cp~0.offset;cstrnlen_~str.base, cstrnlen_~str.offset := cstrnlen_#in~str.base, cstrnlen_#in~str.offset;cstrnlen_~maxlen := cstrnlen_#in~maxlen;havoc cstrnlen_~cp~0.base, cstrnlen_~cp~0.offset;cstrnlen_~cp~0.base, cstrnlen_~cp~0.offset := cstrnlen_~str.base, cstrnlen_~str.offset; 178#L517-6 [2020-10-20 08:18:50,944 INFO L796 eck$LassoCheckResult]: Loop: 178#L517-6 cstrnlen_#t~short5 := 0 != cstrnlen_~maxlen % 4294967296; 166#L517-1 assume cstrnlen_#t~short5;call cstrnlen_#t~mem4 := read~int(cstrnlen_~cp~0.base, cstrnlen_~cp~0.offset, 1);cstrnlen_#t~short5 := 0 != cstrnlen_#t~mem4; 167#L517-3 assume !!cstrnlen_#t~short5;havoc cstrnlen_#t~short5;havoc cstrnlen_#t~mem4; 173#L517-5 cstrnlen_#t~post2.base, cstrnlen_#t~post2.offset := cstrnlen_~cp~0.base, cstrnlen_~cp~0.offset;cstrnlen_~cp~0.base, cstrnlen_~cp~0.offset := cstrnlen_#t~post2.base, 1 + cstrnlen_#t~post2.offset;havoc cstrnlen_#t~post2.base, cstrnlen_#t~post2.offset;cstrnlen_#t~post3 := cstrnlen_~maxlen;cstrnlen_~maxlen := cstrnlen_#t~post3 - 1;havoc cstrnlen_#t~post3; 178#L517-6 [2020-10-20 08:18:50,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 08:18:50,944 INFO L82 PathProgramCache]: Analyzing trace with hash 1298440016, now seen corresponding path program 1 times [2020-10-20 08:18:50,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 08:18:50,945 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079928927] [2020-10-20 08:18:50,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 08:18:50,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:18:50,958 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:18:50,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:18:50,972 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:18:50,977 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 08:18:50,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 08:18:50,978 INFO L82 PathProgramCache]: Analyzing trace with hash 1942630, now seen corresponding path program 2 times [2020-10-20 08:18:50,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 08:18:50,978 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124978856] [2020-10-20 08:18:50,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 08:18:50,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:18:50,986 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:18:50,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:18:50,991 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:18:50,993 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 08:18:50,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 08:18:50,994 INFO L82 PathProgramCache]: Analyzing trace with hash -1066138571, now seen corresponding path program 1 times [2020-10-20 08:18:50,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 08:18:50,995 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232358656] [2020-10-20 08:18:50,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 08:18:51,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:18:51,015 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:18:51,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:18:51,046 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:18:51,057 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 08:18:51,434 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 78 [2020-10-20 08:18:51,549 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 08:18:51,549 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 08:18:51,549 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 08:18:51,549 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 08:18:51,550 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 08:18:51,550 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:18:51,550 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 08:18:51,550 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 08:18:51,550 INFO L133 ssoRankerPreferences]: Filename of dumped script: openbsd_cstrnlen-alloca-1.i_Iteration3_Lasso [2020-10-20 08:18:51,551 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 08:18:51,551 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 08:18:51,560 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 08:18:51,565 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 08:18:51,567 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 08:18:51,571 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 08:18:51,574 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 08:18:51,578 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 08:18:51,581 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 08:18:51,584 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 08:18:51,586 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 08:18:51,590 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 08:18:51,592 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 08:18:51,595 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 08:18:51,599 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 08:18:51,612 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 08:18:51,616 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 08:18:51,620 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 08:18:51,623 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 08:18:51,626 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 08:18:51,792 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 08:18:52,224 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 08:18:52,227 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 08:18:52,233 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 08:18:52,234 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:18:52,235 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 08:18:52,235 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:18:52,235 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:18:52,235 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:18:52,239 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 08:18:52,240 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:18:52,244 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:18:52,272 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 08:18:52,274 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:18:52,274 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 08:18:52,274 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:18:52,274 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:18:52,274 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:18:52,275 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 08:18:52,275 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 08:18:52,285 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:18:52,316 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 08:18:52,318 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:18:52,318 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:18:52,318 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:18:52,318 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:18:52,321 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 08:18:52,321 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 08:18:52,325 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:18:52,366 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 08:18:52,368 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:18:52,368 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 08:18:52,369 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:18:52,369 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:18:52,369 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:18:52,370 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 08:18:52,370 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 08:18:52,371 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:18:52,412 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 08:18:52,413 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:18:52,414 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:18:52,414 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:18:52,414 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:18:52,416 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 08:18:52,416 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 08:18:52,422 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:18:52,451 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 08:18:52,453 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:18:52,454 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 08:18:52,454 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:18:52,454 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:18:52,454 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:18:52,463 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 08:18:52,463 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 08:18:52,464 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:18:52,490 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 08:18:52,491 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:18:52,491 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 08:18:52,492 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:18:52,492 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:18:52,492 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:18:52,494 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 08:18:52,494 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 08:18:52,496 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:18:52,522 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 08:18:52,523 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:18:52,523 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 08:18:52,524 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:18:52,524 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:18:52,524 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:18:52,524 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 08:18:52,524 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 08:18:52,526 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 08:18:52,550 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 08:18:52,551 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:18:52,552 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 08:18:52,552 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:18:52,552 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:18:52,552 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:18:52,553 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 08:18:52,553 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:18:52,560 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:18:52,584 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 08:18:52,585 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:18:52,586 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 08:18:52,586 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:18:52,586 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:18:52,586 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:18:52,586 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 08:18:52,586 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 08:18:52,588 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:18:52,615 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 08:18:52,616 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:18:52,616 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 08:18:52,616 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:18:52,617 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:18:52,617 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:18:52,617 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 08:18:52,617 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 08:18:52,619 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:18:52,641 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 08:18:52,643 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:18:52,643 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:18:52,643 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:18:52,643 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:18:52,645 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 08:18:52,645 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 08:18:52,656 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 08:18:52,694 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 08:18:52,695 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:18:52,696 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:18:52,696 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:18:52,696 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:18:52,706 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 08:18:52,706 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:18:52,719 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:18:52,741 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 08:18:52,743 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:18:52,743 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 08:18:52,743 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:18:52,743 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:18:52,743 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:18:52,744 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 08:18:52,744 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 08:18:52,746 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:18:52,769 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 08:18:52,770 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:18:52,771 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:18:52,771 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:18:52,771 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:18:52,776 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 08:18:52,776 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 08:18:52,779 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 08:18:52,802 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:18:52,804 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:18:52,804 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:18:52,804 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:18:52,804 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:18:52,806 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 08:18:52,806 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 08:18:52,810 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:18:52,844 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 08:18:52,845 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:18:52,845 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 08:18:52,845 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:18:52,845 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:18:52,845 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:18:52,846 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 08:18:52,846 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 08:18:52,847 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:18:52,871 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 08:18:52,873 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:18:52,873 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:18:52,873 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:18:52,874 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:18:52,880 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 08:18:52,880 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 08:18:52,901 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 08:18:52,927 INFO L443 ModelExtractionUtils]: Simplification made 9 calls to the SMT solver. [2020-10-20 08:18:52,928 INFO L444 ModelExtractionUtils]: 9 out of 31 variables were initially zero. Simplification set additionally 19 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 08:18:52,938 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:18:52,945 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-10-20 08:18:52,945 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 08:18:52,945 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_cstrnlen_~cp~0.offset, v_rep(select #length ULTIMATE.start_main_#t~malloc8.base)_2) = -1*ULTIMATE.start_cstrnlen_~cp~0.offset + 1*v_rep(select #length ULTIMATE.start_main_#t~malloc8.base)_2 Supporting invariants [] [2020-10-20 08:18:53,025 INFO L297 tatePredicateManager]: 2 out of 3 supporting invariants were superfluous and have been removed [2020-10-20 08:18:53,029 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-10-20 08:18:53,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 08:18:53,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 08:18:53,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-20 08:18:53,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 08:18:53,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 08:18:53,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-20 08:18:53,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 08:18:53,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 08:18:53,103 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 [2020-10-20 08:18:53,103 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 16 transitions. cyclomatic complexity: 5 Second operand 5 states. [2020-10-20 08:18:53,148 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 16 transitions. cyclomatic complexity: 5. Second operand 5 states. Result 17 states and 21 transitions. Complement of second has 7 states. [2020-10-20 08:18:53,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2020-10-20 08:18:53,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-20 08:18:53,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 15 transitions. [2020-10-20 08:18:53,153 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 9 letters. Loop has 4 letters. [2020-10-20 08:18:53,153 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 08:18:53,153 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 13 letters. Loop has 4 letters. [2020-10-20 08:18:53,153 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 08:18:53,153 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 9 letters. Loop has 8 letters. [2020-10-20 08:18:53,154 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 08:18:53,154 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 21 transitions. [2020-10-20 08:18:53,156 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-20 08:18:53,156 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 0 states and 0 transitions. [2020-10-20 08:18:53,156 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-10-20 08:18:53,156 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-10-20 08:18:53,156 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-10-20 08:18:53,156 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-20 08:18:53,156 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 08:18:53,156 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 08:18:53,156 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 08:18:53,157 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-10-20 08:18:53,157 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-10-20 08:18:53,157 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-20 08:18:53,157 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-10-20 08:18:53,163 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.10 08:18:53 BoogieIcfgContainer [2020-10-20 08:18:53,163 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-10-20 08:18:53,163 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 08:18:53,163 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 08:18:53,163 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 08:18:53,164 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 08:18:48" (3/4) ... [2020-10-20 08:18:53,167 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 08:18:53,167 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 08:18:53,169 INFO L168 Benchmark]: Toolchain (without parser) took 5650.73 ms. Allocated memory was 35.7 MB in the beginning and 70.3 MB in the end (delta: 34.6 MB). Free memory was 15.1 MB in the beginning and 26.7 MB in the end (delta: -11.7 MB). Peak memory consumption was 22.9 MB. Max. memory is 14.3 GB. [2020-10-20 08:18:53,170 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 34.1 MB. Free memory was 10.0 MB in the beginning and 9.9 MB in the end (delta: 45.7 kB). Peak memory consumption was 45.7 kB. Max. memory is 14.3 GB. [2020-10-20 08:18:53,171 INFO L168 Benchmark]: CACSL2BoogieTranslator took 567.34 ms. Allocated memory was 35.7 MB in the beginning and 45.6 MB in the end (delta: 10.0 MB). Free memory was 14.2 MB in the beginning and 27.8 MB in the end (delta: -13.6 MB). Peak memory consumption was 13.7 MB. Max. memory is 14.3 GB. [2020-10-20 08:18:53,171 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.03 ms. Allocated memory is still 45.6 MB. Free memory was 27.8 MB in the beginning and 25.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. [2020-10-20 08:18:53,172 INFO L168 Benchmark]: Boogie Preprocessor took 31.72 ms. Allocated memory is still 45.6 MB. Free memory was 25.8 MB in the beginning and 24.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. [2020-10-20 08:18:53,173 INFO L168 Benchmark]: RCFGBuilder took 405.76 ms. Allocated memory is still 45.6 MB. Free memory was 24.1 MB in the beginning and 21.5 MB in the end (delta: 2.7 MB). Peak memory consumption was 13.8 MB. Max. memory is 14.3 GB. [2020-10-20 08:18:53,174 INFO L168 Benchmark]: BuchiAutomizer took 4580.94 ms. Allocated memory was 45.6 MB in the beginning and 70.3 MB in the end (delta: 24.6 MB). Free memory was 21.5 MB in the beginning and 27.4 MB in the end (delta: -5.9 MB). Peak memory consumption was 18.7 MB. Max. memory is 14.3 GB. [2020-10-20 08:18:53,174 INFO L168 Benchmark]: Witness Printer took 4.07 ms. Allocated memory is still 70.3 MB. Free memory was 27.4 MB in the beginning and 26.7 MB in the end (delta: 680.6 kB). Peak memory consumption was 680.6 kB. Max. memory is 14.3 GB. [2020-10-20 08:18:53,179 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 34.1 MB. Free memory was 10.0 MB in the beginning and 9.9 MB in the end (delta: 45.7 kB). Peak memory consumption was 45.7 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 567.34 ms. Allocated memory was 35.7 MB in the beginning and 45.6 MB in the end (delta: 10.0 MB). Free memory was 14.2 MB in the beginning and 27.8 MB in the end (delta: -13.6 MB). Peak memory consumption was 13.7 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 51.03 ms. Allocated memory is still 45.6 MB. Free memory was 27.8 MB in the beginning and 25.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 31.72 ms. Allocated memory is still 45.6 MB. Free memory was 25.8 MB in the beginning and 24.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. * RCFGBuilder took 405.76 ms. Allocated memory is still 45.6 MB. Free memory was 24.1 MB in the beginning and 21.5 MB in the end (delta: 2.7 MB). Peak memory consumption was 13.8 MB. Max. memory is 14.3 GB. * BuchiAutomizer took 4580.94 ms. Allocated memory was 45.6 MB in the beginning and 70.3 MB in the end (delta: 24.6 MB). Free memory was 21.5 MB in the beginning and 27.4 MB in the end (delta: -5.9 MB). Peak memory consumption was 18.7 MB. Max. memory is 14.3 GB. * Witness Printer took 4.07 ms. Allocated memory is still 70.3 MB. Free memory was 27.4 MB in the beginning and 26.7 MB in the end (delta: 680.6 kB). Peak memory consumption was 680.6 kB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #length * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (1 trivial, 2 deterministic, 0 nondeterministic). One deterministic module has affine ranking function length1 + -1 * i and consists of 5 locations. One deterministic module has affine ranking function -1 * cp + unknown-#length-unknown[__builtin_alloca (length1 * sizeof(char))] and consists of 5 locations. 1 modules have a trivial ranking function, the largest among these consists of 7 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.5s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 3.9s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 13 states and ocurred in iteration 1. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 38 SDtfs, 59 SDslu, 52 SDs, 0 SdLazy, 45 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc1 concLT0 SILN0 SILU0 SILI0 SILT0 lasso2 LassoPreprocessingBenchmarks: Lassos: inital121 mio100 ax115 hnf98 lsp74 ukn83 mio100 lsp57 div105 bol100 ite100 ukn100 eq167 hnf89 smp98 dnf100 smp100 tf100 neg100 sie102 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 29ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...