./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/array-memsafety/openbsd_cmemchr-alloca-2.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_cmemchr-alloca-2.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 f10d5178d15d886f7ae857469faf20c98bafd5fa ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 08:18:18,356 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 08:18:18,360 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 08:18:18,406 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 08:18:18,407 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 08:18:18,420 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 08:18:18,422 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 08:18:18,425 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 08:18:18,428 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 08:18:18,438 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 08:18:18,439 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 08:18:18,443 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 08:18:18,443 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 08:18:18,444 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 08:18:18,447 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 08:18:18,449 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 08:18:18,450 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 08:18:18,455 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 08:18:18,457 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 08:18:18,461 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 08:18:18,463 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 08:18:18,467 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 08:18:18,468 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 08:18:18,469 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 08:18:18,471 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 08:18:18,475 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 08:18:18,476 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 08:18:18,477 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 08:18:18,479 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 08:18:18,480 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 08:18:18,480 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 08:18:18,481 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 08:18:18,482 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 08:18:18,482 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 08:18:18,484 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 08:18:18,484 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 08:18:18,485 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 08:18:18,485 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 08:18:18,486 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 08:18:18,487 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 08:18:18,488 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 08:18:18,489 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-10-20 08:18:18,537 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 08:18:18,537 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 08:18:18,540 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 08:18:18,541 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 08:18:18,541 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 08:18:18,541 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-20 08:18:18,541 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-20 08:18:18,541 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-20 08:18:18,541 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-20 08:18:18,542 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-20 08:18:18,542 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-20 08:18:18,543 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 08:18:18,543 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 08:18:18,544 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 08:18:18,544 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 08:18:18,544 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 08:18:18,545 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 08:18:18,545 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-20 08:18:18,545 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-20 08:18:18,545 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-20 08:18:18,546 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 08:18:18,546 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 08:18:18,546 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-20 08:18:18,546 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 08:18:18,547 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-20 08:18:18,547 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 08:18:18,547 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 08:18:18,548 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-20 08:18:18,548 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 08:18:18,548 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 08:18:18,548 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 08:18:18,549 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-20 08:18:18,550 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-20 08:18:18,550 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 -> f10d5178d15d886f7ae857469faf20c98bafd5fa [2020-10-20 08:18:18,772 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 08:18:18,794 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 08:18:18,799 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 08:18:18,801 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 08:18:18,801 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 08:18:18,802 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/openbsd_cmemchr-alloca-2.i [2020-10-20 08:18:18,876 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a40fa6bc/52aa40fc35a44eb4972b91bd496a4899/FLAG1f5412d09 [2020-10-20 08:18:19,423 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 08:18:19,424 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/openbsd_cmemchr-alloca-2.i [2020-10-20 08:18:19,436 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a40fa6bc/52aa40fc35a44eb4972b91bd496a4899/FLAG1f5412d09 [2020-10-20 08:18:19,829 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a40fa6bc/52aa40fc35a44eb4972b91bd496a4899 [2020-10-20 08:18:19,833 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 08:18:19,840 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 08:18:19,841 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 08:18:19,841 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 08:18:19,845 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 08:18:19,846 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 08:18:19" (1/1) ... [2020-10-20 08:18:19,849 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ef46cfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 08:18:19, skipping insertion in model container [2020-10-20 08:18:19,849 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 08:18:19" (1/1) ... [2020-10-20 08:18:19,857 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 08:18:19,913 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 08:18:20,316 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 08:18:20,332 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 08:18:20,381 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 08:18:20,437 INFO L208 MainTranslator]: Completed translation [2020-10-20 08:18:20,438 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 08:18:20 WrapperNode [2020-10-20 08:18:20,438 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 08:18:20,439 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 08:18:20,439 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 08:18:20,439 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 08:18:20,448 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 08:18:20" (1/1) ... [2020-10-20 08:18:20,464 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 08:18:20" (1/1) ... [2020-10-20 08:18:20,482 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 08:18:20,483 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 08:18:20,483 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 08:18:20,483 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 08:18:20,493 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 08:18:20" (1/1) ... [2020-10-20 08:18:20,493 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 08:18:20" (1/1) ... [2020-10-20 08:18:20,496 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 08:18:20" (1/1) ... [2020-10-20 08:18:20,497 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 08:18:20" (1/1) ... [2020-10-20 08:18:20,503 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 08:18:20" (1/1) ... [2020-10-20 08:18:20,508 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 08:18:20" (1/1) ... [2020-10-20 08:18:20,509 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 08:18:20" (1/1) ... [2020-10-20 08:18:20,513 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 08:18:20,513 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 08:18:20,514 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 08:18:20,514 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 08:18:20,515 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 08:18:20" (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 08:18:20,589 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-20 08:18:20,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 08:18:20,589 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 08:18:20,589 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 08:18:20,589 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 08:18:20,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 08:18:20,933 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 08:18:20,934 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-20 08:18:20,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 08:18:20 BoogieIcfgContainer [2020-10-20 08:18:20,936 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 08:18:20,936 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-20 08:18:20,937 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-20 08:18:20,939 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-20 08:18:20,940 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 08:18:20,940 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.10 08:18:19" (1/3) ... [2020-10-20 08:18:20,941 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@43947d55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.10 08:18:20, skipping insertion in model container [2020-10-20 08:18:20,941 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 08:18:20,942 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 08:18:20" (2/3) ... [2020-10-20 08:18:20,942 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@43947d55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.10 08:18:20, skipping insertion in model container [2020-10-20 08:18:20,942 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 08:18:20,942 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 08:18:20" (3/3) ... [2020-10-20 08:18:20,944 INFO L373 chiAutomizerObserver]: Analyzing ICFG openbsd_cmemchr-alloca-2.i [2020-10-20 08:18:20,981 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-20 08:18:20,981 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-20 08:18:20,981 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-20 08:18:20,981 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 08:18:20,981 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 08:18:20,981 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-20 08:18:20,982 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 08:18:20,982 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-20 08:18:20,997 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states. [2020-10-20 08:18:21,020 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2020-10-20 08:18:21,020 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 08:18:21,021 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 08:18:21,026 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2020-10-20 08:18:21,027 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-20 08:18:21,027 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-10-20 08:18:21,027 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states. [2020-10-20 08:18:21,029 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2020-10-20 08:18:21,029 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 08:18:21,029 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 08:18:21,029 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2020-10-20 08:18:21,029 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-20 08:18:21,037 INFO L794 eck$LassoCheckResult]: Stem: 13#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 12#L-1true havoc main_#res;havoc main_#t~nondet5, main_#t~nondet6, main_#t~nondet7, main_#t~malloc8.base, main_#t~malloc8.offset, main_#t~nondet10, main_#t~post9, main_~i~0, main_#t~ret11.base, main_#t~ret11.offset, main_~length~0, main_~n~0, main_~c~0, main_~nondetArea~0.base, main_~nondetArea~0.offset;main_~length~0 := main_#t~nondet5;havoc main_#t~nondet5;main_~n~0 := main_#t~nondet6;havoc main_#t~nondet6;main_~c~0 := main_#t~nondet7;havoc main_#t~nondet7; 17#L529true assume !(main_~length~0 < 1); 20#L529-2true assume !(main_~n~0 < 1); 14#L532-1true call main_#t~malloc8.base, main_#t~malloc8.offset := #Ultimate.allocOnStack(main_~n~0);main_~nondetArea~0.base, main_~nondetArea~0.offset := main_#t~malloc8.base, main_#t~malloc8.offset;main_~i~0 := 0; 8#L537-3true [2020-10-20 08:18:21,038 INFO L796 eck$LassoCheckResult]: Loop: 8#L537-3true assume !!(main_~i~0 < main_~n~0);call write~int(main_#t~nondet10, main_~nondetArea~0.base, main_~nondetArea~0.offset + main_~i~0, 1);havoc main_#t~nondet10; 7#L537-2true main_#t~post9 := main_~i~0;main_~i~0 := 1 + main_#t~post9;havoc main_#t~post9; 8#L537-3true [2020-10-20 08:18:21,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 08:18:21,045 INFO L82 PathProgramCache]: Analyzing trace with hash 28695878, now seen corresponding path program 1 times [2020-10-20 08:18:21,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 08:18:21,056 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210555131] [2020-10-20 08:18:21,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 08:18:21,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:18:21,194 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:18:21,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:18:21,224 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:18:21,255 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 08:18:21,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 08:18:21,257 INFO L82 PathProgramCache]: Analyzing trace with hash 1699, now seen corresponding path program 1 times [2020-10-20 08:18:21,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 08:18:21,259 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36619525] [2020-10-20 08:18:21,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 08:18:21,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:18:21,289 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:18:21,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:18:21,302 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:18:21,310 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 08:18:21,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 08:18:21,312 INFO L82 PathProgramCache]: Analyzing trace with hash 1806935720, now seen corresponding path program 1 times [2020-10-20 08:18:21,313 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 08:18:21,313 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739852641] [2020-10-20 08:18:21,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 08:18:21,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:18:21,362 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:18:21,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:18:21,395 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:18:21,407 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 08:18:21,638 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-10-20 08:18:21,715 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 08:18:21,716 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 08:18:21,717 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 08:18:21,717 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 08:18:21,717 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 08:18:21,717 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:18:21,718 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 08:18:21,718 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 08:18:21,718 INFO L133 ssoRankerPreferences]: Filename of dumped script: openbsd_cmemchr-alloca-2.i_Iteration1_Lasso [2020-10-20 08:18:21,719 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 08:18:21,719 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 08:18:21,759 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 08:18:21,774 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 08:18:21,778 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 08:18:21,781 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 08:18:21,785 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 08:18:21,788 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 08:18:21,792 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 08:18:21,797 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 08:18:21,800 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 08:18:21,803 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 08:18:21,808 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 08:18:21,812 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 08:18:21,815 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 08:18:21,819 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 08:18:21,931 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 08:18:22,231 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 08:18:22,236 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) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:18:22,253 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 08:18:22,256 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:18:22,256 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:18:22,256 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:18:22,256 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:18:22,263 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 08:18:22,264 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 08:18:22,272 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 08:18:22,319 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 08:18:22,321 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:18:22,321 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 08:18:22,323 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:18:22,323 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:18:22,323 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:18:22,325 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 08:18:22,326 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 08:18:22,330 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 08:18:22,377 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 08:18:22,380 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:18:22,380 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 08:18:22,381 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:18:22,381 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:18:22,381 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:18:22,382 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 08:18:22,382 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 08:18:22,384 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 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) [2020-10-20 08:18:22,429 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 08:18:22,431 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:18:22,431 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 08:18:22,432 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:18:22,432 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:18:22,432 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:18:22,433 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 08:18:22,433 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:18:22,436 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) [2020-10-20 08:18:22,487 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 08:18:22,489 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:18:22,489 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 08:18:22,489 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:18:22,490 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:18:22,490 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:18:22,491 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 08:18:22,491 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:18:22,493 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) [2020-10-20 08:18:22,538 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 08:18:22,540 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:18:22,540 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 08:18:22,541 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:18:22,541 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:18:22,541 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:18:22,542 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 08:18:22,542 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:18:22,545 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) [2020-10-20 08:18:22,592 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 08:18:22,594 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:18:22,595 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:18:22,595 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:18:22,595 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:18:22,598 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 08:18:22,598 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:18:22,603 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 08:18:22,644 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 08:18:22,646 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:18:22,646 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 08:18:22,646 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:18:22,646 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:18:22,646 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:18:22,647 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 08:18:22,647 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 08:18:22,649 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 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 08:18:22,679 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 08:18:22,681 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:18:22,681 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:18:22,681 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:18:22,681 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:18:22,688 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 08:18:22,688 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 08:18:22,693 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 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:18:22,728 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 08:18:22,731 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:18:22,731 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:18:22,731 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:18:22,731 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:18:22,734 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 08:18:22,734 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 08:18:22,739 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) [2020-10-20 08:18:22,774 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 08:18:22,776 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:18:22,776 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:18:22,776 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:18:22,776 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:18:22,779 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 08:18:22,780 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:18:22,793 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 08:18:22,820 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 08:18:22,822 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:18:22,822 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 08:18:22,822 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:18:22,822 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:18:22,822 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:18:22,823 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 08:18:22,823 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 08:18:22,827 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 08:18:22,853 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 08:18:22,854 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:18:22,854 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:18:22,855 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:18:22,855 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:18:22,858 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 08:18:22,858 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 08:18:22,863 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 08:18:22,895 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 08:18:22,898 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:18:22,899 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 08:18:22,899 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:18:22,899 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:18:22,899 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:18:22,900 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 08:18:22,900 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 08:18:22,902 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 08:18:22,928 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 08:18:22,930 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:18:22,930 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:18:22,931 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:18:22,931 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:18:22,937 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 08:18:22,938 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 08:18:22,945 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 08:18:22,988 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 08:18:22,989 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:18:22,990 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 08:18:22,990 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:18:22,990 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:18:22,990 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:18:22,991 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 08:18:22,991 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 08:18:22,993 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 08:18:23,015 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 08:18:23,016 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:18:23,016 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:18:23,016 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:18:23,017 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:18:23,020 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 08:18:23,020 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 08:18:23,026 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 08:18:23,081 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 08:18:23,083 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:18:23,084 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:18:23,084 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:18:23,084 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:18:23,089 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 08:18:23,090 INFO L402 nArgumentSynthesizer]: A total of 2 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 08:18:23,100 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) [2020-10-20 08:18:23,163 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 08:18:23,165 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:18:23,166 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:18:23,166 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:18:23,166 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:18:23,181 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 08:18:23,182 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:18:23,200 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 08:18:23,397 INFO L443 ModelExtractionUtils]: Simplification made 10 calls to the SMT solver. [2020-10-20 08:18:23,397 INFO L444 ModelExtractionUtils]: 7 out of 22 variables were initially zero. Simplification set additionally 11 variables to zero. 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 08:18:23,410 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 08:18:23,413 INFO L438 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2020-10-20 08:18:23,413 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 08:18:23,414 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0, v_rep(select #length ULTIMATE.start_main_#t~malloc8.base)_1) = -1*ULTIMATE.start_main_~i~0 + 1*v_rep(select #length ULTIMATE.start_main_#t~malloc8.base)_1 Supporting invariants [1*ULTIMATE.start_main_~nondetArea~0.offset >= 0] [2020-10-20 08:18:23,459 INFO L297 tatePredicateManager]: 2 out of 4 supporting invariants were superfluous and have been removed [2020-10-20 08:18:23,514 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-10-20 08:18:23,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 08:18:23,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 08:18:23,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-20 08:18:23,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 08:18:23,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 08:18:23,587 WARN L261 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-20 08:18:23,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 08:18:23,619 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 08:18:23,636 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 08:18:23,638 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states. Second operand 3 states. [2020-10-20 08:18:23,736 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states.. Second operand 3 states. Result 39 states and 56 transitions. Complement of second has 8 states. [2020-10-20 08:18:23,738 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 08:18:23,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-20 08:18:23,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 36 transitions. [2020-10-20 08:18:23,744 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 36 transitions. Stem has 5 letters. Loop has 2 letters. [2020-10-20 08:18:23,745 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 08:18:23,746 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 36 transitions. Stem has 7 letters. Loop has 2 letters. [2020-10-20 08:18:23,746 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 08:18:23,747 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 36 transitions. Stem has 5 letters. Loop has 4 letters. [2020-10-20 08:18:23,748 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 08:18:23,749 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 39 states and 56 transitions. [2020-10-20 08:18:23,756 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-20 08:18:23,763 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 39 states to 14 states and 18 transitions. [2020-10-20 08:18:23,765 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2020-10-20 08:18:23,765 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2020-10-20 08:18:23,766 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 18 transitions. [2020-10-20 08:18:23,767 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-20 08:18:23,767 INFO L691 BuchiCegarLoop]: Abstraction has 14 states and 18 transitions. [2020-10-20 08:18:23,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 18 transitions. [2020-10-20 08:18:23,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-10-20 08:18:23,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-10-20 08:18:23,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 18 transitions. [2020-10-20 08:18:23,799 INFO L714 BuchiCegarLoop]: Abstraction has 14 states and 18 transitions. [2020-10-20 08:18:23,800 INFO L594 BuchiCegarLoop]: Abstraction has 14 states and 18 transitions. [2020-10-20 08:18:23,800 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-10-20 08:18:23,800 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 18 transitions. [2020-10-20 08:18:23,802 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-20 08:18:23,802 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 08:18:23,802 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 08:18:23,803 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 08:18:23,803 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-10-20 08:18:23,803 INFO L794 eck$LassoCheckResult]: Stem: 137#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 135#L-1 havoc main_#res;havoc main_#t~nondet5, main_#t~nondet6, main_#t~nondet7, main_#t~malloc8.base, main_#t~malloc8.offset, main_#t~nondet10, main_#t~post9, main_~i~0, main_#t~ret11.base, main_#t~ret11.offset, main_~length~0, main_~n~0, main_~c~0, main_~nondetArea~0.base, main_~nondetArea~0.offset;main_~length~0 := main_#t~nondet5;havoc main_#t~nondet5;main_~n~0 := main_#t~nondet6;havoc main_#t~nondet6;main_~c~0 := main_#t~nondet7;havoc main_#t~nondet7; 136#L529 assume !(main_~length~0 < 1); 140#L529-2 assume !(main_~n~0 < 1); 138#L532-1 call main_#t~malloc8.base, main_#t~malloc8.offset := #Ultimate.allocOnStack(main_~n~0);main_~nondetArea~0.base, main_~nondetArea~0.offset := main_#t~malloc8.base, main_#t~malloc8.offset;main_~i~0 := 0; 133#L537-3 assume !(main_~i~0 < main_~n~0); 134#L537-4 cmemchr_#in~s.base, cmemchr_#in~s.offset, cmemchr_#in~c, cmemchr_#in~n := main_~nondetArea~0.base, main_~nondetArea~0.offset, main_~c~0, main_~n~0;havoc cmemchr_#res.base, cmemchr_#res.offset;havoc cmemchr_#t~post3.base, cmemchr_#t~post3.offset, cmemchr_#t~mem4, cmemchr_#t~pre2, cmemchr_~p~0.base, cmemchr_~p~0.offset, cmemchr_~s.base, cmemchr_~s.offset, cmemchr_~c, cmemchr_~n;cmemchr_~s.base, cmemchr_~s.offset := cmemchr_#in~s.base, cmemchr_#in~s.offset;cmemchr_~c := cmemchr_#in~c;cmemchr_~n := cmemchr_#in~n; 127#L516 assume 0 != cmemchr_~n % 4294967296;cmemchr_~p~0.base, cmemchr_~p~0.offset := cmemchr_~s.base, cmemchr_~s.offset; 128#L518-4 [2020-10-20 08:18:23,804 INFO L796 eck$LassoCheckResult]: Loop: 128#L518-4 cmemchr_#t~post3.base, cmemchr_#t~post3.offset := cmemchr_~p~0.base, cmemchr_~p~0.offset;cmemchr_~p~0.base, cmemchr_~p~0.offset := cmemchr_#t~post3.base, 1 + cmemchr_#t~post3.offset;call cmemchr_#t~mem4 := read~int(cmemchr_#t~post3.base, cmemchr_#t~post3.offset, 1); 130#L519 assume !(cmemchr_#t~mem4 % 256 == cmemchr_~c % 256);havoc cmemchr_#t~mem4;havoc cmemchr_#t~post3.base, cmemchr_#t~post3.offset; 139#L518-1 cmemchr_#t~pre2 := cmemchr_~n - 1;cmemchr_~n := cmemchr_~n - 1; 129#L518-2 assume !!(0 != cmemchr_#t~pre2 % 4294967296);havoc cmemchr_#t~pre2; 128#L518-4 [2020-10-20 08:18:23,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 08:18:23,805 INFO L82 PathProgramCache]: Analyzing trace with hash 180430706, now seen corresponding path program 1 times [2020-10-20 08:18:23,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 08:18:23,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967198211] [2020-10-20 08:18:23,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 08:18:23,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 08:18:23,927 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 08:18:23,927 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967198211] [2020-10-20 08:18:23,928 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 08:18:23,928 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 08:18:23,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810704503] [2020-10-20 08:18:23,932 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-10-20 08:18:23,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 08:18:23,932 INFO L82 PathProgramCache]: Analyzing trace with hash 2036779, now seen corresponding path program 1 times [2020-10-20 08:18:23,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 08:18:23,933 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084337097] [2020-10-20 08:18:23,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 08:18:23,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:18:23,947 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:18:23,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:18:23,955 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:18:23,958 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 08:18:24,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 08:18:24,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 08:18:24,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-20 08:18:24,027 INFO L87 Difference]: Start difference. First operand 14 states and 18 transitions. cyclomatic complexity: 6 Second operand 4 states. [2020-10-20 08:18:24,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 08:18:24,055 INFO L93 Difference]: Finished difference Result 15 states and 18 transitions. [2020-10-20 08:18:24,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 08:18:24,057 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 18 transitions. [2020-10-20 08:18:24,058 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-20 08:18:24,058 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 15 states and 18 transitions. [2020-10-20 08:18:24,058 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2020-10-20 08:18:24,059 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2020-10-20 08:18:24,059 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 18 transitions. [2020-10-20 08:18:24,059 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-20 08:18:24,059 INFO L691 BuchiCegarLoop]: Abstraction has 15 states and 18 transitions. [2020-10-20 08:18:24,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 18 transitions. [2020-10-20 08:18:24,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2020-10-20 08:18:24,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-10-20 08:18:24,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2020-10-20 08:18:24,062 INFO L714 BuchiCegarLoop]: Abstraction has 14 states and 17 transitions. [2020-10-20 08:18:24,062 INFO L594 BuchiCegarLoop]: Abstraction has 14 states and 17 transitions. [2020-10-20 08:18:24,062 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-10-20 08:18:24,062 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 17 transitions. [2020-10-20 08:18:24,063 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-20 08:18:24,063 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 08:18:24,063 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 08:18:24,064 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 08:18:24,064 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-10-20 08:18:24,064 INFO L794 eck$LassoCheckResult]: Stem: 173#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 171#L-1 havoc main_#res;havoc main_#t~nondet5, 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.base, main_#t~ret11.offset, main_~length~0, main_~n~0, main_~c~0, main_~nondetArea~0.base, main_~nondetArea~0.offset;main_~length~0 := main_#t~nondet5;havoc main_#t~nondet5;main_~n~0 := main_#t~nondet6;havoc main_#t~nondet6;main_~c~0 := main_#t~nondet7;havoc main_#t~nondet7; 172#L529 assume !(main_~length~0 < 1); 176#L529-2 assume !(main_~n~0 < 1); 174#L532-1 call main_#t~malloc8.base, main_#t~malloc8.offset := #Ultimate.allocOnStack(main_~n~0);main_~nondetArea~0.base, main_~nondetArea~0.offset := main_#t~malloc8.base, main_#t~malloc8.offset;main_~i~0 := 0; 169#L537-3 assume !!(main_~i~0 < main_~n~0);call write~int(main_#t~nondet10, main_~nondetArea~0.base, main_~nondetArea~0.offset + main_~i~0, 1);havoc main_#t~nondet10; 167#L537-2 main_#t~post9 := main_~i~0;main_~i~0 := 1 + main_#t~post9;havoc main_#t~post9; 168#L537-3 assume !(main_~i~0 < main_~n~0); 170#L537-4 cmemchr_#in~s.base, cmemchr_#in~s.offset, cmemchr_#in~c, cmemchr_#in~n := main_~nondetArea~0.base, main_~nondetArea~0.offset, main_~c~0, main_~n~0;havoc cmemchr_#res.base, cmemchr_#res.offset;havoc cmemchr_#t~post3.base, cmemchr_#t~post3.offset, cmemchr_#t~mem4, cmemchr_#t~pre2, cmemchr_~p~0.base, cmemchr_~p~0.offset, cmemchr_~s.base, cmemchr_~s.offset, cmemchr_~c, cmemchr_~n;cmemchr_~s.base, cmemchr_~s.offset := cmemchr_#in~s.base, cmemchr_#in~s.offset;cmemchr_~c := cmemchr_#in~c;cmemchr_~n := cmemchr_#in~n; 165#L516 assume 0 != cmemchr_~n % 4294967296;cmemchr_~p~0.base, cmemchr_~p~0.offset := cmemchr_~s.base, cmemchr_~s.offset; 164#L518-4 [2020-10-20 08:18:24,065 INFO L796 eck$LassoCheckResult]: Loop: 164#L518-4 cmemchr_#t~post3.base, cmemchr_#t~post3.offset := cmemchr_~p~0.base, cmemchr_~p~0.offset;cmemchr_~p~0.base, cmemchr_~p~0.offset := cmemchr_#t~post3.base, 1 + cmemchr_#t~post3.offset;call cmemchr_#t~mem4 := read~int(cmemchr_#t~post3.base, cmemchr_#t~post3.offset, 1); 166#L519 assume !(cmemchr_#t~mem4 % 256 == cmemchr_~c % 256);havoc cmemchr_#t~mem4;havoc cmemchr_#t~post3.base, cmemchr_#t~post3.offset; 175#L518-1 cmemchr_#t~pre2 := cmemchr_~n - 1;cmemchr_~n := cmemchr_~n - 1; 163#L518-2 assume !!(0 != cmemchr_#t~pre2 % 4294967296);havoc cmemchr_#t~pre2; 164#L518-4 [2020-10-20 08:18:24,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 08:18:24,065 INFO L82 PathProgramCache]: Analyzing trace with hash 1596934864, now seen corresponding path program 1 times [2020-10-20 08:18:24,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 08:18:24,066 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024202922] [2020-10-20 08:18:24,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 08:18:24,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:18:24,079 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:18:24,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:18:24,091 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:18:24,095 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 08:18:24,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 08:18:24,096 INFO L82 PathProgramCache]: Analyzing trace with hash 2036779, now seen corresponding path program 2 times [2020-10-20 08:18:24,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 08:18:24,097 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454021918] [2020-10-20 08:18:24,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 08:18:24,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:18:24,107 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:18:24,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:18:24,113 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:18:24,120 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 08:18:24,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 08:18:24,124 INFO L82 PathProgramCache]: Analyzing trace with hash 1308516218, now seen corresponding path program 1 times [2020-10-20 08:18:24,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 08:18:24,126 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947803098] [2020-10-20 08:18:24,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 08:18:24,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 08:18:24,283 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 08:18:24,283 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947803098] [2020-10-20 08:18:24,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [797833503] [2020-10-20 08:18:24,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 08:18:24,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 08:18:24,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-20 08:18:24,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 08:18:24,446 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 08:18:24,446 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 08:18:24,446 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-20 08:18:24,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063154770] [2020-10-20 08:18:24,518 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 08:18:24,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-20 08:18:24,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-20 08:18:24,519 INFO L87 Difference]: Start difference. First operand 14 states and 17 transitions. cyclomatic complexity: 5 Second operand 10 states. [2020-10-20 08:18:24,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 08:18:24,652 INFO L93 Difference]: Finished difference Result 28 states and 32 transitions. [2020-10-20 08:18:24,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-20 08:18:24,653 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 32 transitions. [2020-10-20 08:18:24,654 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-20 08:18:24,655 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 17 states and 19 transitions. [2020-10-20 08:18:24,655 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2020-10-20 08:18:24,655 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2020-10-20 08:18:24,655 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 19 transitions. [2020-10-20 08:18:24,656 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-20 08:18:24,656 INFO L691 BuchiCegarLoop]: Abstraction has 17 states and 19 transitions. [2020-10-20 08:18:24,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 19 transitions. [2020-10-20 08:18:24,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2020-10-20 08:18:24,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-10-20 08:18:24,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2020-10-20 08:18:24,659 INFO L714 BuchiCegarLoop]: Abstraction has 16 states and 18 transitions. [2020-10-20 08:18:24,659 INFO L594 BuchiCegarLoop]: Abstraction has 16 states and 18 transitions. [2020-10-20 08:18:24,659 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-10-20 08:18:24,659 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 18 transitions. [2020-10-20 08:18:24,660 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-20 08:18:24,660 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 08:18:24,660 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 08:18:24,661 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 08:18:24,661 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-10-20 08:18:24,661 INFO L794 eck$LassoCheckResult]: Stem: 280#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 278#L-1 havoc main_#res;havoc main_#t~nondet5, 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.base, main_#t~ret11.offset, main_~length~0, main_~n~0, main_~c~0, main_~nondetArea~0.base, main_~nondetArea~0.offset;main_~length~0 := main_#t~nondet5;havoc main_#t~nondet5;main_~n~0 := main_#t~nondet6;havoc main_#t~nondet6;main_~c~0 := main_#t~nondet7;havoc main_#t~nondet7; 279#L529 assume !(main_~length~0 < 1); 283#L529-2 assume !(main_~n~0 < 1); 281#L532-1 call main_#t~malloc8.base, main_#t~malloc8.offset := #Ultimate.allocOnStack(main_~n~0);main_~nondetArea~0.base, main_~nondetArea~0.offset := main_#t~malloc8.base, main_#t~malloc8.offset;main_~i~0 := 0; 275#L537-3 assume !!(main_~i~0 < main_~n~0);call write~int(main_#t~nondet10, main_~nondetArea~0.base, main_~nondetArea~0.offset + main_~i~0, 1);havoc main_#t~nondet10; 273#L537-2 main_#t~post9 := main_~i~0;main_~i~0 := 1 + main_#t~post9;havoc main_#t~post9; 274#L537-3 assume !!(main_~i~0 < main_~n~0);call write~int(main_#t~nondet10, main_~nondetArea~0.base, main_~nondetArea~0.offset + main_~i~0, 1);havoc main_#t~nondet10; 276#L537-2 main_#t~post9 := main_~i~0;main_~i~0 := 1 + main_#t~post9;havoc main_#t~post9; 284#L537-3 assume !(main_~i~0 < main_~n~0); 277#L537-4 cmemchr_#in~s.base, cmemchr_#in~s.offset, cmemchr_#in~c, cmemchr_#in~n := main_~nondetArea~0.base, main_~nondetArea~0.offset, main_~c~0, main_~n~0;havoc cmemchr_#res.base, cmemchr_#res.offset;havoc cmemchr_#t~post3.base, cmemchr_#t~post3.offset, cmemchr_#t~mem4, cmemchr_#t~pre2, cmemchr_~p~0.base, cmemchr_~p~0.offset, cmemchr_~s.base, cmemchr_~s.offset, cmemchr_~c, cmemchr_~n;cmemchr_~s.base, cmemchr_~s.offset := cmemchr_#in~s.base, cmemchr_#in~s.offset;cmemchr_~c := cmemchr_#in~c;cmemchr_~n := cmemchr_#in~n; 269#L516 assume 0 != cmemchr_~n % 4294967296;cmemchr_~p~0.base, cmemchr_~p~0.offset := cmemchr_~s.base, cmemchr_~s.offset; 270#L518-4 [2020-10-20 08:18:24,662 INFO L796 eck$LassoCheckResult]: Loop: 270#L518-4 cmemchr_#t~post3.base, cmemchr_#t~post3.offset := cmemchr_~p~0.base, cmemchr_~p~0.offset;cmemchr_~p~0.base, cmemchr_~p~0.offset := cmemchr_#t~post3.base, 1 + cmemchr_#t~post3.offset;call cmemchr_#t~mem4 := read~int(cmemchr_#t~post3.base, cmemchr_#t~post3.offset, 1); 272#L519 assume !(cmemchr_#t~mem4 % 256 == cmemchr_~c % 256);havoc cmemchr_#t~mem4;havoc cmemchr_#t~post3.base, cmemchr_#t~post3.offset; 282#L518-1 cmemchr_#t~pre2 := cmemchr_~n - 1;cmemchr_~n := cmemchr_~n - 1; 271#L518-2 assume !!(0 != cmemchr_#t~pre2 % 4294967296);havoc cmemchr_#t~pre2; 270#L518-4 [2020-10-20 08:18:24,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 08:18:24,662 INFO L82 PathProgramCache]: Analyzing trace with hash 1352797870, now seen corresponding path program 2 times [2020-10-20 08:18:24,662 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 08:18:24,663 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963548511] [2020-10-20 08:18:24,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 08:18:24,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:18:24,676 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:18:24,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:18:24,688 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:18:24,693 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 08:18:24,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 08:18:24,697 INFO L82 PathProgramCache]: Analyzing trace with hash 2036779, now seen corresponding path program 3 times [2020-10-20 08:18:24,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 08:18:24,697 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127350884] [2020-10-20 08:18:24,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 08:18:24,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:18:24,710 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:18:24,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:18:24,722 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:18:24,724 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 08:18:24,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 08:18:24,726 INFO L82 PathProgramCache]: Analyzing trace with hash -24116136, now seen corresponding path program 2 times [2020-10-20 08:18:24,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 08:18:24,727 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851761940] [2020-10-20 08:18:24,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 08:18:24,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:18:24,793 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:18:24,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:18:24,809 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:18:24,814 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 08:18:25,194 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 89 [2020-10-20 08:18:25,313 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-10-20 08:18:25,315 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 08:18:25,315 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 08:18:25,315 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 08:18:25,315 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 08:18:25,315 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 08:18:25,315 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:18:25,315 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 08:18:25,315 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 08:18:25,316 INFO L133 ssoRankerPreferences]: Filename of dumped script: openbsd_cmemchr-alloca-2.i_Iteration4_Lasso [2020-10-20 08:18:25,316 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 08:18:25,316 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 08:18:25,320 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 08:18:25,323 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 08:18:25,326 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 08:18:25,329 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 08:18:25,332 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 08:18:25,335 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 08:18:25,339 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 08:18:25,341 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 08:18:25,345 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 08:18:25,347 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 08:18:25,350 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 08:18:25,354 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 08:18:25,518 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2020-10-20 08:18:25,614 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 08:18:25,618 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 08:18:25,620 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 08:18:25,623 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 08:18:25,625 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 08:18:25,628 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 08:18:25,631 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 08:18:25,634 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 08:18:25,637 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 08:18:25,983 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-10-20 08:18:26,323 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 08:18:26,323 INFO L489 LassoAnalysis]: Using template 'affine'. 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 08:18:26,335 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:18:26,336 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:18:26,336 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 08:18:26,337 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:18:26,337 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:18:26,337 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:18:26,337 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 08:18:26,337 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 08:18:26,341 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) [2020-10-20 08:18:26,378 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 08:18:26,379 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:18:26,379 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 08:18:26,380 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:18:26,380 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:18:26,380 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:18:26,381 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 08:18:26,381 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:18:26,382 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 08:18:26,413 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 08:18:26,414 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:18:26,414 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:18:26,414 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:18:26,415 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:18:26,416 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 08:18:26,416 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 08:18:26,421 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) Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:18:26,449 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 08:18:26,450 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:18:26,451 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 08:18:26,451 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:18:26,451 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:18:26,451 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:18:26,451 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 08:18:26,451 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 08:18:26,453 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 08:18:26,475 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 08:18:26,477 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:18:26,477 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 08:18:26,477 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:18:26,477 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:18:26,477 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:18:26,477 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 08:18:26,478 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 08:18:26,479 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 08:18:26,503 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 08:18:26,505 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:18:26,505 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:18:26,505 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:18:26,505 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:18:26,507 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 08:18:26,507 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 08:18:26,515 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 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:18:26,563 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 08:18:26,565 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:18:26,565 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 08:18:26,565 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:18:26,565 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:18:26,565 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:18:26,566 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 08:18:26,566 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 08:18:26,568 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 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 08:18:26,593 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 08:18:26,595 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:18:26,595 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 08:18:26,595 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:18:26,596 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:18:26,596 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:18:26,596 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 08:18:26,596 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:18:26,604 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 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:18:26,638 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 08:18:26,639 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:18:26,639 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 08:18:26,640 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:18:26,640 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:18:26,640 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:18:26,640 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 08:18:26,640 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 08:18:26,643 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 32 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 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:18:26,666 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 08:18:26,667 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:18:26,667 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 08:18:26,667 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:18:26,668 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:18:26,668 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:18:26,668 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 08:18:26,668 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 08:18:26,669 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 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:18:26,691 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 08:18:26,692 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:18:26,693 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:18:26,693 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:18:26,693 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:18:26,694 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 08:18:26,695 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 08:18:26,698 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 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:18:26,722 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 08:18:26,724 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:18:26,725 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:18:26,725 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:18:26,725 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:18:26,741 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 08:18:26,741 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 08:18:26,751 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 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:18:26,783 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 08:18:26,784 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:18:26,784 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:18:26,785 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:18:26,785 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:18:26,792 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 08:18:26,792 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 08:18:26,803 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 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:18:26,826 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 08:18:26,827 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:18:26,828 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:18:26,828 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2020-10-20 08:18:26,828 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:18:26,840 INFO L401 nArgumentSynthesizer]: We have 16 Motzkin's Theorem applications. [2020-10-20 08:18:26,840 INFO L402 nArgumentSynthesizer]: A total of 4 supporting invariants were added. [2020-10-20 08:18:26,863 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 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 08:18:26,900 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 08:18:26,902 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:18:26,902 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:18:26,902 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:18:26,902 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:18:26,904 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 08:18:26,904 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:18:26,914 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 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 08:18:26,948 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 08:18:26,950 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:18:26,950 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:18:26,950 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:18:26,950 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:18:26,961 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 08:18:26,961 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 08:18:26,988 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 08:18:27,018 INFO L443 ModelExtractionUtils]: Simplification made 6 calls to the SMT solver. [2020-10-20 08:18:27,018 INFO L444 ModelExtractionUtils]: 31 out of 40 variables were initially zero. Simplification set additionally 6 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 08:18:27,024 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:18:27,028 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-10-20 08:18:27,028 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 08:18:27,028 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_cmemchr_~p~0.offset, v_rep(select #length ULTIMATE.start_main_#t~malloc8.base)_2) = -1*ULTIMATE.start_cmemchr_~p~0.offset + 1*v_rep(select #length ULTIMATE.start_main_#t~malloc8.base)_2 Supporting invariants [] [2020-10-20 08:18:27,088 INFO L297 tatePredicateManager]: 4 out of 5 supporting invariants were superfluous and have been removed [2020-10-20 08:18:27,093 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-10-20 08:18:27,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 08:18:27,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 08:18:27,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-20 08:18:27,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 08:18:27,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 08:18:27,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-20 08:18:27,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 08:18:27,225 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 08:18:27,225 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.3 stem predicates 2 loop predicates [2020-10-20 08:18:27,226 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 18 transitions. cyclomatic complexity: 4 Second operand 5 states. [2020-10-20 08:18:27,280 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 18 transitions. cyclomatic complexity: 4. Second operand 5 states. Result 20 states and 22 transitions. Complement of second has 6 states. [2020-10-20 08:18:27,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 3 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-20 08:18:27,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-20 08:18:27,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 16 transitions. [2020-10-20 08:18:27,282 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 16 transitions. Stem has 12 letters. Loop has 4 letters. [2020-10-20 08:18:27,282 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 08:18:27,282 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 16 transitions. Stem has 16 letters. Loop has 4 letters. [2020-10-20 08:18:27,282 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 08:18:27,282 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 16 transitions. Stem has 12 letters. Loop has 8 letters. [2020-10-20 08:18:27,283 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 08:18:27,283 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20 states and 22 transitions. [2020-10-20 08:18:27,284 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-20 08:18:27,285 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20 states to 0 states and 0 transitions. [2020-10-20 08:18:27,285 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-10-20 08:18:27,285 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-10-20 08:18:27,285 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-10-20 08:18:27,285 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-20 08:18:27,286 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 08:18:27,286 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 08:18:27,286 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 08:18:27,286 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-10-20 08:18:27,286 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-10-20 08:18:27,286 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-20 08:18:27,287 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-10-20 08:18:27,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.10 08:18:27 BoogieIcfgContainer [2020-10-20 08:18:27,294 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-10-20 08:18:27,294 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 08:18:27,294 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 08:18:27,295 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 08:18:27,295 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 08:18:20" (3/4) ... [2020-10-20 08:18:27,298 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 08:18:27,299 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 08:18:27,301 INFO L168 Benchmark]: Toolchain (without parser) took 7466.03 ms. Allocated memory was 34.6 MB in the beginning and 73.4 MB in the end (delta: 38.8 MB). Free memory was 10.2 MB in the beginning and 24.4 MB in the end (delta: -14.2 MB). Peak memory consumption was 24.6 MB. Max. memory is 14.3 GB. [2020-10-20 08:18:27,303 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 33.6 MB. Free memory was 18.4 MB in the beginning and 18.4 MB in the end (delta: 41.9 kB). Peak memory consumption was 41.9 kB. Max. memory is 14.3 GB. [2020-10-20 08:18:27,304 INFO L168 Benchmark]: CACSL2BoogieTranslator took 597.73 ms. Allocated memory was 34.6 MB in the beginning and 42.5 MB in the end (delta: 7.9 MB). Free memory was 9.3 MB in the beginning and 26.0 MB in the end (delta: -16.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 14.3 GB. [2020-10-20 08:18:27,305 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.59 ms. Allocated memory is still 42.5 MB. Free memory was 26.0 MB in the beginning and 23.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 14.3 GB. [2020-10-20 08:18:27,306 INFO L168 Benchmark]: Boogie Preprocessor took 30.06 ms. Allocated memory is still 42.5 MB. Free memory was 23.9 MB in the beginning and 22.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 14.3 GB. [2020-10-20 08:18:27,307 INFO L168 Benchmark]: RCFGBuilder took 422.68 ms. Allocated memory was 42.5 MB in the beginning and 43.5 MB in the end (delta: 1.0 MB). Free memory was 22.4 MB in the beginning and 19.9 MB in the end (delta: 2.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 14.3 GB. [2020-10-20 08:18:27,307 INFO L168 Benchmark]: BuchiAutomizer took 6357.51 ms. Allocated memory was 43.5 MB in the beginning and 73.4 MB in the end (delta: 29.9 MB). Free memory was 19.7 MB in the beginning and 25.1 MB in the end (delta: -5.5 MB). Peak memory consumption was 24.4 MB. Max. memory is 14.3 GB. [2020-10-20 08:18:27,308 INFO L168 Benchmark]: Witness Printer took 4.37 ms. Allocated memory is still 73.4 MB. Free memory was 25.1 MB in the beginning and 24.4 MB in the end (delta: 775.8 kB). Peak memory consumption was 775.8 kB. Max. memory is 14.3 GB. [2020-10-20 08:18:27,312 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 33.6 MB. Free memory was 18.4 MB in the beginning and 18.4 MB in the end (delta: 41.9 kB). Peak memory consumption was 41.9 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 597.73 ms. Allocated memory was 34.6 MB in the beginning and 42.5 MB in the end (delta: 7.9 MB). Free memory was 9.3 MB in the beginning and 26.0 MB in the end (delta: -16.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 43.59 ms. Allocated memory is still 42.5 MB. Free memory was 26.0 MB in the beginning and 23.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 30.06 ms. Allocated memory is still 42.5 MB. Free memory was 23.9 MB in the beginning and 22.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 14.3 GB. * RCFGBuilder took 422.68 ms. Allocated memory was 42.5 MB in the beginning and 43.5 MB in the end (delta: 1.0 MB). Free memory was 22.4 MB in the beginning and 19.9 MB in the end (delta: 2.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 14.3 GB. * BuchiAutomizer took 6357.51 ms. Allocated memory was 43.5 MB in the beginning and 73.4 MB in the end (delta: 29.9 MB). Free memory was 19.7 MB in the beginning and 25.1 MB in the end (delta: -5.5 MB). Peak memory consumption was 24.4 MB. Max. memory is 14.3 GB. * Witness Printer took 4.37 ms. Allocated memory is still 73.4 MB. Free memory was 25.1 MB in the beginning and 24.4 MB in the end (delta: 775.8 kB). Peak memory consumption was 775.8 kB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (2 trivial, 2 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -1 * i + unknown-#length-unknown[__builtin_alloca (n * sizeof(char))] and consists of 5 locations. One deterministic module has affine ranking function -1 * p + unknown-#length-unknown[__builtin_alloca (n * sizeof(char))] and consists of 5 locations. 2 modules have a trivial ranking function, the largest among these consists of 10 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 6.3s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 5.5s. Construction of modules took 0.1s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 4. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 16 states and ocurred in iteration 3. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 46 SDtfs, 85 SDslu, 80 SDs, 0 SdLazy, 92 SolverSat, 25 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc1 concLT0 SILN0 SILU1 SILI0 SILT0 lasso2 LassoPreprocessingBenchmarks: Lassos: inital127 mio100 ax115 hnf98 lsp80 ukn86 mio100 lsp58 div125 bol100 ite100 ukn100 eq173 hnf81 smp94 dnf100 smp100 tf100 neg99 sie102 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 39ms VariablesStem: 3 VariablesLoop: 6 DisjunctsStem: 1 DisjunctsLoop: 2 SupportingInvariants: 4 MotzkinApplications: 16 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...