./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-dietlibc/strcspn.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 54858612 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_1.5.800.v20200727-1323.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/termination-dietlibc/strcspn.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-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 64bit --witnessprinter.graph.data.programhash eaca3e09b762fe94634aa0b3e6a04213782212a5 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-5485861 [2020-10-26 04:18:10,417 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 04:18:10,420 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 04:18:10,459 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 04:18:10,460 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 04:18:10,461 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 04:18:10,463 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 04:18:10,466 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 04:18:10,468 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 04:18:10,469 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 04:18:10,471 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 04:18:10,472 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 04:18:10,473 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 04:18:10,475 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 04:18:10,476 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 04:18:10,478 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 04:18:10,479 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 04:18:10,480 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 04:18:10,483 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 04:18:10,485 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 04:18:10,487 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 04:18:10,489 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 04:18:10,490 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 04:18:10,492 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 04:18:10,495 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 04:18:10,496 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 04:18:10,496 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 04:18:10,497 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 04:18:10,498 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 04:18:10,499 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 04:18:10,500 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 04:18:10,501 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 04:18:10,502 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 04:18:10,503 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 04:18:10,504 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 04:18:10,505 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 04:18:10,506 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 04:18:10,506 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 04:18:10,507 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 04:18:10,508 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 04:18:10,509 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 04:18:10,510 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-10-26 04:18:10,557 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 04:18:10,559 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 04:18:10,561 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 04:18:10,563 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 04:18:10,563 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 04:18:10,563 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-26 04:18:10,564 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-26 04:18:10,564 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-26 04:18:10,564 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-26 04:18:10,564 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-26 04:18:10,565 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-26 04:18:10,566 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 04:18:10,566 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-26 04:18:10,566 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 04:18:10,567 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 04:18:10,567 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-26 04:18:10,568 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-26 04:18:10,568 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-26 04:18:10,568 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 04:18:10,568 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-26 04:18:10,569 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 04:18:10,569 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-26 04:18:10,569 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 04:18:10,570 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 04:18:10,570 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-26 04:18:10,571 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 04:18:10,571 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 04:18:10,571 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 04:18:10,572 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-26 04:18:10,573 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-26 04:18:10,574 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eaca3e09b762fe94634aa0b3e6a04213782212a5 [2020-10-26 04:18:11,021 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 04:18:11,055 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 04:18:11,060 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 04:18:11,062 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 04:18:11,062 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 04:18:11,063 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-dietlibc/strcspn.i [2020-10-26 04:18:11,151 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a99fba35a/6b976b77be6643e2bb9920c1712251cc/FLAG3735c73b1 [2020-10-26 04:18:11,921 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 04:18:11,922 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-dietlibc/strcspn.i [2020-10-26 04:18:11,944 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a99fba35a/6b976b77be6643e2bb9920c1712251cc/FLAG3735c73b1 [2020-10-26 04:18:12,194 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a99fba35a/6b976b77be6643e2bb9920c1712251cc [2020-10-26 04:18:12,197 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 04:18:12,203 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-26 04:18:12,205 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 04:18:12,205 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 04:18:12,209 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 04:18:12,210 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 04:18:12" (1/1) ... [2020-10-26 04:18:12,213 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@555fb3e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:18:12, skipping insertion in model container [2020-10-26 04:18:12,214 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 04:18:12" (1/1) ... [2020-10-26 04:18:12,224 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 04:18:12,265 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 04:18:12,580 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 04:18:12,591 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 04:18:12,635 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 04:18:12,690 INFO L208 MainTranslator]: Completed translation [2020-10-26 04:18:12,690 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:18:12 WrapperNode [2020-10-26 04:18:12,690 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 04:18:12,692 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-26 04:18:12,692 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-26 04:18:12,692 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-26 04:18:12,704 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:18:12" (1/1) ... [2020-10-26 04:18:12,719 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:18:12" (1/1) ... [2020-10-26 04:18:12,743 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-26 04:18:12,744 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 04:18:12,744 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 04:18:12,745 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 04:18:12,758 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:18:12" (1/1) ... [2020-10-26 04:18:12,759 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:18:12" (1/1) ... [2020-10-26 04:18:12,762 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:18:12" (1/1) ... [2020-10-26 04:18:12,762 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:18:12" (1/1) ... [2020-10-26 04:18:12,769 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:18:12" (1/1) ... [2020-10-26 04:18:12,773 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:18:12" (1/1) ... [2020-10-26 04:18:12,775 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:18:12" (1/1) ... [2020-10-26 04:18:12,777 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 04:18:12,778 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 04:18:12,779 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 04:18:12,779 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 04:18:12,780 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:18:12" (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 [2020-10-26 04:18:12,866 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 04:18:12,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 04:18:12,867 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 04:18:12,867 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 04:18:12,867 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 04:18:12,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 04:18:13,186 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 04:18:13,186 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-26 04:18:13,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 04:18:13 BoogieIcfgContainer [2020-10-26 04:18:13,189 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 04:18:13,190 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-26 04:18:13,190 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-26 04:18:13,195 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-26 04:18:13,199 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-26 04:18:13,199 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 26.10 04:18:12" (1/3) ... [2020-10-26 04:18:13,200 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7cee98ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.10 04:18:13, skipping insertion in model container [2020-10-26 04:18:13,200 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-26 04:18:13,201 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:18:12" (2/3) ... [2020-10-26 04:18:13,201 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7cee98ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.10 04:18:13, skipping insertion in model container [2020-10-26 04:18:13,201 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-26 04:18:13,201 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 04:18:13" (3/3) ... [2020-10-26 04:18:13,203 INFO L373 chiAutomizerObserver]: Analyzing ICFG strcspn.i [2020-10-26 04:18:13,266 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-26 04:18:13,266 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-26 04:18:13,267 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-26 04:18:13,267 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 04:18:13,267 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 04:18:13,272 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-26 04:18:13,272 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 04:18:13,272 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-26 04:18:13,304 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states. [2020-10-26 04:18:13,349 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2020-10-26 04:18:13,350 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 04:18:13,350 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 04:18:13,358 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-10-26 04:18:13,359 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2020-10-26 04:18:13,359 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-10-26 04:18:13,359 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states. [2020-10-26 04:18:13,363 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2020-10-26 04:18:13,363 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 04:18:13,363 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 04:18:13,364 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-10-26 04:18:13,364 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2020-10-26 04:18:13,374 INFO L794 eck$LassoCheckResult]: Stem: 10#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 8#L-1true havoc main_#res;havoc main_#t~nondet9, main_#t~malloc10.base, main_#t~malloc10.offset, main_#t~nondet11, main_#t~malloc12.base, main_#t~malloc12.offset, main_#t~ret13, main_~in_len~0, main_~in~0.base, main_~in~0.offset, main_~out_len~0, main_~out~0.base, main_~out~0.offset;main_~in_len~0 := main_#t~nondet9;havoc main_#t~nondet9; 12#L519true assume !(main_~in_len~0 < 1);call main_#t~malloc10.base, main_#t~malloc10.offset := #Ultimate.allocOnStack(main_~in_len~0);main_~in~0.base, main_~in~0.offset := main_#t~malloc10.base, main_#t~malloc10.offset;call write~int(0, main_~in~0.base, main_~in~0.offset + (main_~in_len~0 - 1), 1);main_~out_len~0 := main_#t~nondet11;havoc main_#t~nondet11; 6#L523true assume !(main_~out_len~0 < 1);call main_#t~malloc12.base, main_#t~malloc12.offset := #Ultimate.allocOnStack(main_~out_len~0);main_~out~0.base, main_~out~0.offset := main_#t~malloc12.base, main_#t~malloc12.offset;call write~int(0, main_~out~0.base, main_~out~0.offset + (main_~out_len~0 - 1), 1);strcspn_#in~s.base, strcspn_#in~s.offset, strcspn_#in~reject.base, strcspn_#in~reject.offset := main_~in~0.base, main_~in~0.offset, main_~out~0.base, main_~out~0.offset;havoc strcspn_#res;havoc strcspn_#t~mem4, strcspn_#t~mem5, strcspn_#t~pre3, strcspn_#t~mem6, strcspn_#t~pre7, strcspn_#t~pre2.base, strcspn_#t~pre2.offset, strcspn_#t~mem8, strcspn_~s.base, strcspn_~s.offset, strcspn_~reject.base, strcspn_~reject.offset, strcspn_~l~0, strcspn_~i~0;strcspn_~s.base, strcspn_~s.offset := strcspn_#in~s.base, strcspn_#in~s.offset;strcspn_~reject.base, strcspn_~reject.offset := strcspn_#in~reject.base, strcspn_#in~reject.offset;strcspn_~l~0 := 0;havoc strcspn_~i~0; 18#L510-4true [2020-10-26 04:18:13,377 INFO L796 eck$LassoCheckResult]: Loop: 18#L510-4true call strcspn_#t~mem8 := read~int(strcspn_~s.base, strcspn_~s.offset, 1); 11#L510-1true assume !!(0 != strcspn_#t~mem8);havoc strcspn_#t~mem8;strcspn_~i~0 := 0; 15#L511-4true assume !true; 19#L511-5true strcspn_#t~pre7 := 1 + strcspn_~l~0;strcspn_~l~0 := 1 + strcspn_~l~0;havoc strcspn_#t~pre7; 16#L510-3true strcspn_#t~pre2.base, strcspn_#t~pre2.offset := strcspn_~s.base, 1 + strcspn_~s.offset;strcspn_~s.base, strcspn_~s.offset := strcspn_~s.base, 1 + strcspn_~s.offset;havoc strcspn_#t~pre2.base, strcspn_#t~pre2.offset; 18#L510-4true [2020-10-26 04:18:13,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:18:13,390 INFO L82 PathProgramCache]: Analyzing trace with hash 925672, now seen corresponding path program 1 times [2020-10-26 04:18:13,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:18:13,402 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248439335] [2020-10-26 04:18:13,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:18:13,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:18:13,616 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:18:13,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:18:13,649 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:18:13,691 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:18:13,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:18:13,699 INFO L82 PathProgramCache]: Analyzing trace with hash 44069891, now seen corresponding path program 1 times [2020-10-26 04:18:13,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:18:13,700 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304931604] [2020-10-26 04:18:13,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:18:13,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:18:13,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:18:13,761 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304931604] [2020-10-26 04:18:13,761 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 04:18:13,762 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-26 04:18:13,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925757672] [2020-10-26 04:18:13,771 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-10-26 04:18:13,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 04:18:13,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-26 04:18:13,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-26 04:18:13,797 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 2 states. [2020-10-26 04:18:13,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 04:18:13,808 INFO L93 Difference]: Finished difference Result 17 states and 21 transitions. [2020-10-26 04:18:13,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-26 04:18:13,811 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 21 transitions. [2020-10-26 04:18:13,816 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2020-10-26 04:18:13,821 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 12 states and 13 transitions. [2020-10-26 04:18:13,822 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2020-10-26 04:18:13,823 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2020-10-26 04:18:13,824 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 13 transitions. [2020-10-26 04:18:13,824 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-26 04:18:13,825 INFO L691 BuchiCegarLoop]: Abstraction has 12 states and 13 transitions. [2020-10-26 04:18:13,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 13 transitions. [2020-10-26 04:18:13,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-10-26 04:18:13,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-10-26 04:18:13,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2020-10-26 04:18:13,860 INFO L714 BuchiCegarLoop]: Abstraction has 12 states and 13 transitions. [2020-10-26 04:18:13,860 INFO L594 BuchiCegarLoop]: Abstraction has 12 states and 13 transitions. [2020-10-26 04:18:13,861 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-10-26 04:18:13,861 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 13 transitions. [2020-10-26 04:18:13,863 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2020-10-26 04:18:13,863 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 04:18:13,864 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 04:18:13,865 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-10-26 04:18:13,865 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2020-10-26 04:18:13,865 INFO L794 eck$LassoCheckResult]: Stem: 47#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 42#L-1 havoc main_#res;havoc main_#t~nondet9, main_#t~malloc10.base, main_#t~malloc10.offset, main_#t~nondet11, main_#t~malloc12.base, main_#t~malloc12.offset, main_#t~ret13, main_~in_len~0, main_~in~0.base, main_~in~0.offset, main_~out_len~0, main_~out~0.base, main_~out~0.offset;main_~in_len~0 := main_#t~nondet9;havoc main_#t~nondet9; 43#L519 assume !(main_~in_len~0 < 1);call main_#t~malloc10.base, main_#t~malloc10.offset := #Ultimate.allocOnStack(main_~in_len~0);main_~in~0.base, main_~in~0.offset := main_#t~malloc10.base, main_#t~malloc10.offset;call write~int(0, main_~in~0.base, main_~in~0.offset + (main_~in_len~0 - 1), 1);main_~out_len~0 := main_#t~nondet11;havoc main_#t~nondet11; 50#L523 assume !(main_~out_len~0 < 1);call main_#t~malloc12.base, main_#t~malloc12.offset := #Ultimate.allocOnStack(main_~out_len~0);main_~out~0.base, main_~out~0.offset := main_#t~malloc12.base, main_#t~malloc12.offset;call write~int(0, main_~out~0.base, main_~out~0.offset + (main_~out_len~0 - 1), 1);strcspn_#in~s.base, strcspn_#in~s.offset, strcspn_#in~reject.base, strcspn_#in~reject.offset := main_~in~0.base, main_~in~0.offset, main_~out~0.base, main_~out~0.offset;havoc strcspn_#res;havoc strcspn_#t~mem4, strcspn_#t~mem5, strcspn_#t~pre3, strcspn_#t~mem6, strcspn_#t~pre7, strcspn_#t~pre2.base, strcspn_#t~pre2.offset, strcspn_#t~mem8, strcspn_~s.base, strcspn_~s.offset, strcspn_~reject.base, strcspn_~reject.offset, strcspn_~l~0, strcspn_~i~0;strcspn_~s.base, strcspn_~s.offset := strcspn_#in~s.base, strcspn_#in~s.offset;strcspn_~reject.base, strcspn_~reject.offset := strcspn_#in~reject.base, strcspn_#in~reject.offset;strcspn_~l~0 := 0;havoc strcspn_~i~0; 53#L510-4 [2020-10-26 04:18:13,866 INFO L796 eck$LassoCheckResult]: Loop: 53#L510-4 call strcspn_#t~mem8 := read~int(strcspn_~s.base, strcspn_~s.offset, 1); 48#L510-1 assume !!(0 != strcspn_#t~mem8);havoc strcspn_#t~mem8;strcspn_~i~0 := 0; 49#L511-4 call strcspn_#t~mem6 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 44#L511-1 assume !(0 != strcspn_#t~mem6);havoc strcspn_#t~mem6; 45#L511-5 strcspn_#t~pre7 := 1 + strcspn_~l~0;strcspn_~l~0 := 1 + strcspn_~l~0;havoc strcspn_#t~pre7; 52#L510-3 strcspn_#t~pre2.base, strcspn_#t~pre2.offset := strcspn_~s.base, 1 + strcspn_~s.offset;strcspn_~s.base, strcspn_~s.offset := strcspn_~s.base, 1 + strcspn_~s.offset;havoc strcspn_#t~pre2.base, strcspn_#t~pre2.offset; 53#L510-4 [2020-10-26 04:18:13,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:18:13,867 INFO L82 PathProgramCache]: Analyzing trace with hash 925672, now seen corresponding path program 2 times [2020-10-26 04:18:13,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:18:13,868 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434218232] [2020-10-26 04:18:13,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:18:13,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:18:13,919 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:18:13,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:18:13,935 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:18:13,941 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:18:13,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:18:13,942 INFO L82 PathProgramCache]: Analyzing trace with hash 1365737035, now seen corresponding path program 1 times [2020-10-26 04:18:13,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:18:13,942 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067054457] [2020-10-26 04:18:13,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:18:13,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:18:13,951 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:18:13,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:18:13,958 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:18:13,961 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:18:13,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:18:13,962 INFO L82 PathProgramCache]: Analyzing trace with hash 736220402, now seen corresponding path program 1 times [2020-10-26 04:18:13,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:18:13,963 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250620812] [2020-10-26 04:18:13,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:18:14,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:18:14,015 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:18:14,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:18:14,044 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:18:14,052 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:18:14,887 WARN L193 SmtUtils]: Spent 652.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 88 [2020-10-26 04:18:15,119 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2020-10-26 04:18:15,137 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 04:18:15,138 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 04:18:15,138 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 04:18:15,139 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 04:18:15,139 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-26 04:18:15,140 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:18:15,140 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 04:18:15,145 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 04:18:15,145 INFO L133 ssoRankerPreferences]: Filename of dumped script: strcspn.i_Iteration2_Lasso [2020-10-26 04:18:15,145 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 04:18:15,146 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 04:18:15,188 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:18:15,222 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:18:15,230 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:18:15,235 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:18:15,240 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:18:15,245 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:18:15,250 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:18:15,255 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:18:15,260 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:18:15,268 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:18:15,273 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:18:15,279 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:18:15,284 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:18:15,746 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2020-10-26 04:18:15,903 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2020-10-26 04:18:15,904 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:18:15,909 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:18:15,912 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:18:15,916 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:18:16,533 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 04:18:16,539 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:18:16,547 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 [2020-10-26 04:18:16,550 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:18:16,551 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:18:16,551 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:18:16,551 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:18:16,552 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:18:16,554 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:18:16,554 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:18:16,557 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) [2020-10-26 04:18:16,598 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 04:18:16,600 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:18:16,600 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:18:16,600 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:18:16,600 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:18:16,604 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 04:18:16,605 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:18:16,612 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) [2020-10-26 04:18:16,650 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:18:16,652 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:18:16,652 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:18:16,652 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:18:16,652 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:18:16,652 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:18:16,653 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:18:16,653 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 04:18:16,655 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:18:16,684 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 [2020-10-26 04:18:16,686 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:18:16,687 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:18:16,687 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:18:16,687 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:18:16,691 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 04:18:16,691 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-26 04:18:16,696 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:18:16,720 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 [2020-10-26 04:18:16,721 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:18:16,722 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:18:16,722 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:18:16,722 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:18:16,722 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:18:16,723 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:18:16,723 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 04:18:16,725 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:18:16,751 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 04:18:16,752 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:18:16,753 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:18:16,753 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:18:16,753 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:18:16,753 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:18:16,754 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:18:16,754 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 04:18:16,762 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:18:16,785 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 [2020-10-26 04:18:16,787 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:18:16,787 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:18:16,788 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:18:16,788 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:18:16,788 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:18:16,789 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:18:16,789 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 04:18:16,795 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 [2020-10-26 04:18:16,819 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 [2020-10-26 04:18:16,820 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:18:16,820 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:18:16,821 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:18:16,821 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:18:16,821 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:18:16,822 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:18:16,822 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 04:18:16,828 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 [2020-10-26 04:18:16,855 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 04:18:16,856 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:18:16,856 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:18:16,856 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:18:16,857 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:18:16,864 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 04:18:16,864 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-26 04:18:16,888 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) [2020-10-26 04:18:16,935 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 [2020-10-26 04:18:16,937 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:18:16,938 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:18:16,938 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:18:16,938 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:18:16,938 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:18:16,939 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:18:16,939 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:18:16,941 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:18:16,977 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 [2020-10-26 04:18:16,979 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:18:16,979 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:18:16,979 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:18:16,979 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:18:16,980 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:18:16,980 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:18:16,980 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 04:18:16,982 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 [2020-10-26 04:18:17,007 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 [2020-10-26 04:18:17,009 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:18:17,009 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:18:17,009 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:18:17,010 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:18:17,010 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:18:17,011 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:18:17,011 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 04:18:17,015 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 [2020-10-26 04:18:17,039 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 [2020-10-26 04:18:17,041 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:18:17,041 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:18:17,041 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:18:17,041 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:18:17,044 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 04:18:17,044 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-26 04:18:17,052 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 [2020-10-26 04:18:17,077 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 [2020-10-26 04:18:17,079 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:18:17,079 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:18:17,080 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:18:17,080 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:18:17,099 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 04:18:17,101 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-26 04:18:17,117 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-26 04:18:17,181 INFO L443 ModelExtractionUtils]: Simplification made 9 calls to the SMT solver. [2020-10-26 04:18:17,181 INFO L444 ModelExtractionUtils]: 13 out of 25 variables were initially zero. Simplification set additionally 9 variables to zero. 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) [2020-10-26 04:18:17,190 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:18:17,234 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-10-26 04:18:17,234 INFO L510 LassoAnalysis]: Proved termination. [2020-10-26 04:18:17,235 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_strcspn_~s.offset, v_rep(select #length ULTIMATE.start_main_#t~malloc10.base)_1) = -1*ULTIMATE.start_strcspn_~s.offset + 1*v_rep(select #length ULTIMATE.start_main_#t~malloc10.base)_1 Supporting invariants [] [2020-10-26 04:18:17,417 INFO L297 tatePredicateManager]: 14 out of 15 supporting invariants were superfluous and have been removed [2020-10-26 04:18:17,428 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-10-26 04:18:17,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:18:17,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:18:17,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-26 04:18:17,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:18:17,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:18:17,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-26 04:18:17,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:18:17,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:18:17,620 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 2 loop predicates [2020-10-26 04:18:17,620 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 13 transitions. cyclomatic complexity: 2 Second operand 4 states. [2020-10-26 04:18:17,705 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 13 transitions. cyclomatic complexity: 2. Second operand 4 states. Result 20 states and 23 transitions. Complement of second has 5 states. [2020-10-26 04:18:17,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-26 04:18:17,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-26 04:18:17,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2020-10-26 04:18:17,709 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 4 letters. Loop has 6 letters. [2020-10-26 04:18:17,710 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:18:17,710 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 10 letters. Loop has 6 letters. [2020-10-26 04:18:17,711 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:18:17,711 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 4 letters. Loop has 12 letters. [2020-10-26 04:18:17,711 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:18:17,712 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20 states and 23 transitions. [2020-10-26 04:18:17,713 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-26 04:18:17,714 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20 states to 18 states and 21 transitions. [2020-10-26 04:18:17,714 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2020-10-26 04:18:17,714 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2020-10-26 04:18:17,714 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 21 transitions. [2020-10-26 04:18:17,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-26 04:18:17,714 INFO L691 BuchiCegarLoop]: Abstraction has 18 states and 21 transitions. [2020-10-26 04:18:17,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 21 transitions. [2020-10-26 04:18:17,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-10-26 04:18:17,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-10-26 04:18:17,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2020-10-26 04:18:17,717 INFO L714 BuchiCegarLoop]: Abstraction has 18 states and 21 transitions. [2020-10-26 04:18:17,717 INFO L594 BuchiCegarLoop]: Abstraction has 18 states and 21 transitions. [2020-10-26 04:18:17,717 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-10-26 04:18:17,717 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 21 transitions. [2020-10-26 04:18:17,718 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-26 04:18:17,718 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 04:18:17,718 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 04:18:17,719 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-10-26 04:18:17,719 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-10-26 04:18:17,719 INFO L794 eck$LassoCheckResult]: Stem: 199#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 192#L-1 havoc main_#res;havoc main_#t~nondet9, main_#t~malloc10.base, main_#t~malloc10.offset, main_#t~nondet11, main_#t~malloc12.base, main_#t~malloc12.offset, main_#t~ret13, main_~in_len~0, main_~in~0.base, main_~in~0.offset, main_~out_len~0, main_~out~0.base, main_~out~0.offset;main_~in_len~0 := main_#t~nondet9;havoc main_#t~nondet9; 193#L519 assume !(main_~in_len~0 < 1);call main_#t~malloc10.base, main_#t~malloc10.offset := #Ultimate.allocOnStack(main_~in_len~0);main_~in~0.base, main_~in~0.offset := main_#t~malloc10.base, main_#t~malloc10.offset;call write~int(0, main_~in~0.base, main_~in~0.offset + (main_~in_len~0 - 1), 1);main_~out_len~0 := main_#t~nondet11;havoc main_#t~nondet11; 204#L523 assume !(main_~out_len~0 < 1);call main_#t~malloc12.base, main_#t~malloc12.offset := #Ultimate.allocOnStack(main_~out_len~0);main_~out~0.base, main_~out~0.offset := main_#t~malloc12.base, main_#t~malloc12.offset;call write~int(0, main_~out~0.base, main_~out~0.offset + (main_~out_len~0 - 1), 1);strcspn_#in~s.base, strcspn_#in~s.offset, strcspn_#in~reject.base, strcspn_#in~reject.offset := main_~in~0.base, main_~in~0.offset, main_~out~0.base, main_~out~0.offset;havoc strcspn_#res;havoc strcspn_#t~mem4, strcspn_#t~mem5, strcspn_#t~pre3, strcspn_#t~mem6, strcspn_#t~pre7, strcspn_#t~pre2.base, strcspn_#t~pre2.offset, strcspn_#t~mem8, strcspn_~s.base, strcspn_~s.offset, strcspn_~reject.base, strcspn_~reject.offset, strcspn_~l~0, strcspn_~i~0;strcspn_~s.base, strcspn_~s.offset := strcspn_#in~s.base, strcspn_#in~s.offset;strcspn_~reject.base, strcspn_~reject.offset := strcspn_#in~reject.base, strcspn_#in~reject.offset;strcspn_~l~0 := 0;havoc strcspn_~i~0; 207#L510-4 call strcspn_#t~mem8 := read~int(strcspn_~s.base, strcspn_~s.offset, 1); 200#L510-1 assume !!(0 != strcspn_#t~mem8);havoc strcspn_#t~mem8;strcspn_~i~0 := 0; 201#L511-4 [2020-10-26 04:18:17,719 INFO L796 eck$LassoCheckResult]: Loop: 201#L511-4 call strcspn_#t~mem6 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 194#L511-1 assume !!(0 != strcspn_#t~mem6);havoc strcspn_#t~mem6;call strcspn_#t~mem4 := read~int(strcspn_~s.base, strcspn_~s.offset, 1);call strcspn_#t~mem5 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 195#L512 assume !(strcspn_#t~mem4 == strcspn_#t~mem5);havoc strcspn_#t~mem4;havoc strcspn_#t~mem5; 205#L511-3 strcspn_#t~pre3 := 1 + strcspn_~i~0;strcspn_~i~0 := 1 + strcspn_~i~0;havoc strcspn_#t~pre3; 201#L511-4 [2020-10-26 04:18:17,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:18:17,720 INFO L82 PathProgramCache]: Analyzing trace with hash 889571309, now seen corresponding path program 1 times [2020-10-26 04:18:17,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:18:17,721 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920452774] [2020-10-26 04:18:17,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:18:17,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:18:17,739 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:18:17,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:18:17,754 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:18:17,759 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:18:17,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:18:17,760 INFO L82 PathProgramCache]: Analyzing trace with hash 1698248, now seen corresponding path program 1 times [2020-10-26 04:18:17,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:18:17,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933571397] [2020-10-26 04:18:17,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:18:17,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:18:17,772 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:18:17,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:18:17,785 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:18:17,788 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:18:17,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:18:17,792 INFO L82 PathProgramCache]: Analyzing trace with hash 736222132, now seen corresponding path program 1 times [2020-10-26 04:18:17,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:18:17,793 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091203764] [2020-10-26 04:18:17,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:18:17,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:18:17,839 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:18:17,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:18:17,877 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:18:17,892 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:18:18,430 WARN L193 SmtUtils]: Spent 475.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 96 [2020-10-26 04:18:18,604 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-10-26 04:18:18,607 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 04:18:18,607 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 04:18:18,608 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 04:18:18,608 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 04:18:18,608 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-26 04:18:18,608 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:18:18,608 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 04:18:18,608 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 04:18:18,608 INFO L133 ssoRankerPreferences]: Filename of dumped script: strcspn.i_Iteration3_Lasso [2020-10-26 04:18:18,608 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 04:18:18,609 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 04:18:18,618 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:18:18,625 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:18:19,065 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 71 [2020-10-26 04:18:19,138 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:18:19,142 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:18:19,147 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:18:19,151 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:18:19,156 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:18:19,160 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:18:19,163 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:18:19,167 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:18:19,170 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:18:19,175 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:18:19,179 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:18:19,183 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:18:19,187 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:18:19,194 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:18:19,198 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:18:19,853 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 04:18:19,856 INFO L489 LassoAnalysis]: Using template 'affine'. 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) [2020-10-26 04:18:19,864 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 [2020-10-26 04:18:19,866 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:18:19,867 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:18:19,867 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:18:19,868 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:18:19,868 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:18:19,869 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:18:19,869 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:18:19,872 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) [2020-10-26 04:18:19,920 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 [2020-10-26 04:18:19,926 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:18:19,926 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:18:19,926 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:18:19,926 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:18:19,947 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 04:18:19,948 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-26 04:18:19,973 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-26 04:18:20,045 INFO L443 ModelExtractionUtils]: Simplification made 21 calls to the SMT solver. [2020-10-26 04:18:20,046 INFO L444 ModelExtractionUtils]: 25 out of 46 variables were initially zero. Simplification set additionally 17 variables to zero. 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) [2020-10-26 04:18:20,060 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:18:20,064 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-10-26 04:18:20,064 INFO L510 LassoAnalysis]: Proved termination. [2020-10-26 04:18:20,064 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_strcspn_~i~0, ULTIMATE.start_strcspn_~reject.offset, v_rep(select #length ULTIMATE.start_strcspn_~reject.base)_2) = -1*ULTIMATE.start_strcspn_~i~0 - 1*ULTIMATE.start_strcspn_~reject.offset + 1*v_rep(select #length ULTIMATE.start_strcspn_~reject.base)_2 Supporting invariants [] [2020-10-26 04:18:20,159 INFO L297 tatePredicateManager]: 16 out of 16 supporting invariants were superfluous and have been removed [2020-10-26 04:18:20,161 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-10-26 04:18:20,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:18:20,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:18:20,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-26 04:18:20,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:18:20,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:18:20,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-26 04:18:20,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:18:20,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:18:20,232 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 [2020-10-26 04:18:20,232 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 21 transitions. cyclomatic complexity: 5 Second operand 3 states. [2020-10-26 04:18:20,257 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 21 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 45 states and 51 transitions. Complement of second has 5 states. [2020-10-26 04:18:20,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-26 04:18:20,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-26 04:18:20,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 14 transitions. [2020-10-26 04:18:20,259 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 6 letters. Loop has 4 letters. [2020-10-26 04:18:20,259 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:18:20,259 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 10 letters. Loop has 4 letters. [2020-10-26 04:18:20,260 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:18:20,260 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 6 letters. Loop has 8 letters. [2020-10-26 04:18:20,260 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:18:20,260 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 45 states and 51 transitions. [2020-10-26 04:18:20,263 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-26 04:18:20,264 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 45 states to 29 states and 33 transitions. [2020-10-26 04:18:20,264 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2020-10-26 04:18:20,265 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2020-10-26 04:18:20,265 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 33 transitions. [2020-10-26 04:18:20,265 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-26 04:18:20,265 INFO L691 BuchiCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-10-26 04:18:20,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states and 33 transitions. [2020-10-26 04:18:20,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 24. [2020-10-26 04:18:20,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-26 04:18:20,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2020-10-26 04:18:20,269 INFO L714 BuchiCegarLoop]: Abstraction has 24 states and 27 transitions. [2020-10-26 04:18:20,269 INFO L594 BuchiCegarLoop]: Abstraction has 24 states and 27 transitions. [2020-10-26 04:18:20,270 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-10-26 04:18:20,270 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 27 transitions. [2020-10-26 04:18:20,271 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-26 04:18:20,271 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 04:18:20,271 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 04:18:20,272 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 04:18:20,272 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-10-26 04:18:20,272 INFO L794 eck$LassoCheckResult]: Stem: 376#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 370#L-1 havoc main_#res;havoc main_#t~nondet9, main_#t~malloc10.base, main_#t~malloc10.offset, main_#t~nondet11, main_#t~malloc12.base, main_#t~malloc12.offset, main_#t~ret13, main_~in_len~0, main_~in~0.base, main_~in~0.offset, main_~out_len~0, main_~out~0.base, main_~out~0.offset;main_~in_len~0 := main_#t~nondet9;havoc main_#t~nondet9; 371#L519 assume !(main_~in_len~0 < 1);call main_#t~malloc10.base, main_#t~malloc10.offset := #Ultimate.allocOnStack(main_~in_len~0);main_~in~0.base, main_~in~0.offset := main_#t~malloc10.base, main_#t~malloc10.offset;call write~int(0, main_~in~0.base, main_~in~0.offset + (main_~in_len~0 - 1), 1);main_~out_len~0 := main_#t~nondet11;havoc main_#t~nondet11; 381#L523 assume !(main_~out_len~0 < 1);call main_#t~malloc12.base, main_#t~malloc12.offset := #Ultimate.allocOnStack(main_~out_len~0);main_~out~0.base, main_~out~0.offset := main_#t~malloc12.base, main_#t~malloc12.offset;call write~int(0, main_~out~0.base, main_~out~0.offset + (main_~out_len~0 - 1), 1);strcspn_#in~s.base, strcspn_#in~s.offset, strcspn_#in~reject.base, strcspn_#in~reject.offset := main_~in~0.base, main_~in~0.offset, main_~out~0.base, main_~out~0.offset;havoc strcspn_#res;havoc strcspn_#t~mem4, strcspn_#t~mem5, strcspn_#t~pre3, strcspn_#t~mem6, strcspn_#t~pre7, strcspn_#t~pre2.base, strcspn_#t~pre2.offset, strcspn_#t~mem8, strcspn_~s.base, strcspn_~s.offset, strcspn_~reject.base, strcspn_~reject.offset, strcspn_~l~0, strcspn_~i~0;strcspn_~s.base, strcspn_~s.offset := strcspn_#in~s.base, strcspn_#in~s.offset;strcspn_~reject.base, strcspn_~reject.offset := strcspn_#in~reject.base, strcspn_#in~reject.offset;strcspn_~l~0 := 0;havoc strcspn_~i~0; 384#L510-4 call strcspn_#t~mem8 := read~int(strcspn_~s.base, strcspn_~s.offset, 1); 379#L510-1 assume !!(0 != strcspn_#t~mem8);havoc strcspn_#t~mem8;strcspn_~i~0 := 0; 380#L511-4 call strcspn_#t~mem6 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 393#L511-1 assume !(0 != strcspn_#t~mem6);havoc strcspn_#t~mem6; 392#L511-5 strcspn_#t~pre7 := 1 + strcspn_~l~0;strcspn_~l~0 := 1 + strcspn_~l~0;havoc strcspn_#t~pre7; 387#L510-3 strcspn_#t~pre2.base, strcspn_#t~pre2.offset := strcspn_~s.base, 1 + strcspn_~s.offset;strcspn_~s.base, strcspn_~s.offset := strcspn_~s.base, 1 + strcspn_~s.offset;havoc strcspn_#t~pre2.base, strcspn_#t~pre2.offset; 388#L510-4 call strcspn_#t~mem8 := read~int(strcspn_~s.base, strcspn_~s.offset, 1); 377#L510-1 assume !!(0 != strcspn_#t~mem8);havoc strcspn_#t~mem8;strcspn_~i~0 := 0; 378#L511-4 [2020-10-26 04:18:20,273 INFO L796 eck$LassoCheckResult]: Loop: 378#L511-4 call strcspn_#t~mem6 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 372#L511-1 assume !!(0 != strcspn_#t~mem6);havoc strcspn_#t~mem6;call strcspn_#t~mem4 := read~int(strcspn_~s.base, strcspn_~s.offset, 1);call strcspn_#t~mem5 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 373#L512 assume !(strcspn_#t~mem4 == strcspn_#t~mem5);havoc strcspn_#t~mem4;havoc strcspn_#t~mem5; 382#L511-3 strcspn_#t~pre3 := 1 + strcspn_~i~0;strcspn_~i~0 := 1 + strcspn_~i~0;havoc strcspn_#t~pre3; 378#L511-4 [2020-10-26 04:18:20,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:18:20,273 INFO L82 PathProgramCache]: Analyzing trace with hash -1161797001, now seen corresponding path program 2 times [2020-10-26 04:18:20,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:18:20,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028393025] [2020-10-26 04:18:20,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:18:20,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:18:20,290 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:18:20,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:18:20,307 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:18:20,313 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:18:20,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:18:20,314 INFO L82 PathProgramCache]: Analyzing trace with hash 1698248, now seen corresponding path program 2 times [2020-10-26 04:18:20,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:18:20,315 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479025303] [2020-10-26 04:18:20,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:18:20,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:18:20,320 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:18:20,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:18:20,325 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:18:20,330 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:18:20,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:18:20,333 INFO L82 PathProgramCache]: Analyzing trace with hash -967302850, now seen corresponding path program 1 times [2020-10-26 04:18:20,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:18:20,333 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846047052] [2020-10-26 04:18:20,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:18:20,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:18:20,563 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:18:20,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846047052] [2020-10-26 04:18:20,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2084561555] [2020-10-26 04:18:20,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 04:18:20,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:18:20,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 21 conjunts are in the unsatisfiable core [2020-10-26 04:18:20,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:18:20,694 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-10-26 04:18:20,694 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-26 04:18:20,699 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 04:18:20,699 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-26 04:18:20,700 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2020-10-26 04:18:20,701 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:18:20,701 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-26 04:18:20,702 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2020-10-26 04:18:20,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235715069] [2020-10-26 04:18:20,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 04:18:20,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 04:18:20,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-26 04:18:20,803 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. cyclomatic complexity: 6 Second operand 8 states. [2020-10-26 04:18:20,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 04:18:20,888 INFO L93 Difference]: Finished difference Result 46 states and 51 transitions. [2020-10-26 04:18:20,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 04:18:20,889 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 46 states and 51 transitions. [2020-10-26 04:18:20,891 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-26 04:18:20,892 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 46 states to 36 states and 39 transitions. [2020-10-26 04:18:20,892 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2020-10-26 04:18:20,892 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2020-10-26 04:18:20,892 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 39 transitions. [2020-10-26 04:18:20,893 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-26 04:18:20,893 INFO L691 BuchiCegarLoop]: Abstraction has 36 states and 39 transitions. [2020-10-26 04:18:20,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states and 39 transitions. [2020-10-26 04:18:20,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 27. [2020-10-26 04:18:20,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-26 04:18:20,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2020-10-26 04:18:20,897 INFO L714 BuchiCegarLoop]: Abstraction has 27 states and 30 transitions. [2020-10-26 04:18:20,897 INFO L594 BuchiCegarLoop]: Abstraction has 27 states and 30 transitions. [2020-10-26 04:18:20,897 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-10-26 04:18:20,898 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27 states and 30 transitions. [2020-10-26 04:18:20,898 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-26 04:18:20,899 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 04:18:20,899 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 04:18:20,900 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 04:18:20,900 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-10-26 04:18:20,900 INFO L794 eck$LassoCheckResult]: Stem: 508#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 502#L-1 havoc main_#res;havoc main_#t~nondet9, main_#t~malloc10.base, main_#t~malloc10.offset, main_#t~nondet11, main_#t~malloc12.base, main_#t~malloc12.offset, main_#t~ret13, main_~in_len~0, main_~in~0.base, main_~in~0.offset, main_~out_len~0, main_~out~0.base, main_~out~0.offset;main_~in_len~0 := main_#t~nondet9;havoc main_#t~nondet9; 503#L519 assume !(main_~in_len~0 < 1);call main_#t~malloc10.base, main_#t~malloc10.offset := #Ultimate.allocOnStack(main_~in_len~0);main_~in~0.base, main_~in~0.offset := main_#t~malloc10.base, main_#t~malloc10.offset;call write~int(0, main_~in~0.base, main_~in~0.offset + (main_~in_len~0 - 1), 1);main_~out_len~0 := main_#t~nondet11;havoc main_#t~nondet11; 513#L523 assume !(main_~out_len~0 < 1);call main_#t~malloc12.base, main_#t~malloc12.offset := #Ultimate.allocOnStack(main_~out_len~0);main_~out~0.base, main_~out~0.offset := main_#t~malloc12.base, main_#t~malloc12.offset;call write~int(0, main_~out~0.base, main_~out~0.offset + (main_~out_len~0 - 1), 1);strcspn_#in~s.base, strcspn_#in~s.offset, strcspn_#in~reject.base, strcspn_#in~reject.offset := main_~in~0.base, main_~in~0.offset, main_~out~0.base, main_~out~0.offset;havoc strcspn_#res;havoc strcspn_#t~mem4, strcspn_#t~mem5, strcspn_#t~pre3, strcspn_#t~mem6, strcspn_#t~pre7, strcspn_#t~pre2.base, strcspn_#t~pre2.offset, strcspn_#t~mem8, strcspn_~s.base, strcspn_~s.offset, strcspn_~reject.base, strcspn_~reject.offset, strcspn_~l~0, strcspn_~i~0;strcspn_~s.base, strcspn_~s.offset := strcspn_#in~s.base, strcspn_#in~s.offset;strcspn_~reject.base, strcspn_~reject.offset := strcspn_#in~reject.base, strcspn_#in~reject.offset;strcspn_~l~0 := 0;havoc strcspn_~i~0; 517#L510-4 call strcspn_#t~mem8 := read~int(strcspn_~s.base, strcspn_~s.offset, 1); 511#L510-1 assume !!(0 != strcspn_#t~mem8);havoc strcspn_#t~mem8;strcspn_~i~0 := 0; 512#L511-4 call strcspn_#t~mem6 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 506#L511-1 assume !!(0 != strcspn_#t~mem6);havoc strcspn_#t~mem6;call strcspn_#t~mem4 := read~int(strcspn_~s.base, strcspn_~s.offset, 1);call strcspn_#t~mem5 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 507#L512 assume !(strcspn_#t~mem4 == strcspn_#t~mem5);havoc strcspn_#t~mem4;havoc strcspn_#t~mem5; 515#L511-3 strcspn_#t~pre3 := 1 + strcspn_~i~0;strcspn_~i~0 := 1 + strcspn_~i~0;havoc strcspn_#t~pre3; 516#L511-4 call strcspn_#t~mem6 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 522#L511-1 assume !(0 != strcspn_#t~mem6);havoc strcspn_#t~mem6; 521#L511-5 strcspn_#t~pre7 := 1 + strcspn_~l~0;strcspn_~l~0 := 1 + strcspn_~l~0;havoc strcspn_#t~pre7; 518#L510-3 strcspn_#t~pre2.base, strcspn_#t~pre2.offset := strcspn_~s.base, 1 + strcspn_~s.offset;strcspn_~s.base, strcspn_~s.offset := strcspn_~s.base, 1 + strcspn_~s.offset;havoc strcspn_#t~pre2.base, strcspn_#t~pre2.offset; 519#L510-4 call strcspn_#t~mem8 := read~int(strcspn_~s.base, strcspn_~s.offset, 1); 509#L510-1 assume !!(0 != strcspn_#t~mem8);havoc strcspn_#t~mem8;strcspn_~i~0 := 0; 510#L511-4 [2020-10-26 04:18:20,900 INFO L796 eck$LassoCheckResult]: Loop: 510#L511-4 call strcspn_#t~mem6 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 504#L511-1 assume !!(0 != strcspn_#t~mem6);havoc strcspn_#t~mem6;call strcspn_#t~mem4 := read~int(strcspn_~s.base, strcspn_~s.offset, 1);call strcspn_#t~mem5 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 505#L512 assume !(strcspn_#t~mem4 == strcspn_#t~mem5);havoc strcspn_#t~mem4;havoc strcspn_#t~mem5; 514#L511-3 strcspn_#t~pre3 := 1 + strcspn_~i~0;strcspn_~i~0 := 1 + strcspn_~i~0;havoc strcspn_#t~pre3; 510#L511-4 [2020-10-26 04:18:20,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:18:20,901 INFO L82 PathProgramCache]: Analyzing trace with hash 1375356158, now seen corresponding path program 2 times [2020-10-26 04:18:20,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:18:20,901 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715601487] [2020-10-26 04:18:20,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:18:20,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:18:20,919 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:18:20,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:18:20,934 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:18:20,939 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:18:20,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:18:20,940 INFO L82 PathProgramCache]: Analyzing trace with hash 1698248, now seen corresponding path program 3 times [2020-10-26 04:18:20,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:18:20,941 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161523659] [2020-10-26 04:18:20,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:18:20,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:18:20,945 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:18:20,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:18:20,949 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:18:20,950 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:18:20,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:18:20,951 INFO L82 PathProgramCache]: Analyzing trace with hash -1858115515, now seen corresponding path program 3 times [2020-10-26 04:18:20,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:18:20,952 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108415344] [2020-10-26 04:18:20,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:18:20,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:18:20,967 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:18:20,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:18:20,982 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:18:20,988 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:18:21,957 WARN L193 SmtUtils]: Spent 870.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 140 [2020-10-26 04:18:22,159 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-10-26 04:18:22,162 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 04:18:22,162 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 04:18:22,163 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 04:18:22,163 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 04:18:22,163 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-26 04:18:22,163 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:18:22,163 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 04:18:22,163 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 04:18:22,163 INFO L133 ssoRankerPreferences]: Filename of dumped script: strcspn.i_Iteration5_Lasso [2020-10-26 04:18:22,163 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 04:18:22,163 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 04:18:22,167 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:18:22,185 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:18:22,188 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:18:22,190 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:18:22,193 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:18:22,196 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:18:22,199 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:18:22,202 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:18:22,205 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:18:22,208 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:18:22,213 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:18:22,222 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:18:22,224 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:18:22,227 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:18:22,231 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:18:22,234 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:18:22,854 WARN L193 SmtUtils]: Spent 386.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 88 [2020-10-26 04:18:23,044 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 56 [2020-10-26 04:18:23,046 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:18:23,505 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2020-10-26 04:18:24,009 WARN L193 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 36 [2020-10-26 04:18:24,260 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2020-10-26 04:18:24,332 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 04:18:24,333 INFO L489 LassoAnalysis]: Using template 'affine'. 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) [2020-10-26 04:18:24,342 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 04:18:24,343 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:18:24,344 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:18:24,344 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:18:24,344 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:18:24,346 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 04:18:24,346 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-26 04:18:24,349 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:18:24,372 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 [2020-10-26 04:18:24,374 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:18:24,374 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:18:24,374 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:18:24,374 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:18:24,374 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:18:24,375 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:18:24,375 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 04:18:24,376 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:18:24,401 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 [2020-10-26 04:18:24,402 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:18:24,402 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:18:24,402 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:18:24,402 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:18:24,402 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:18:24,403 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:18:24,403 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 04:18:24,404 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:18:24,429 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 [2020-10-26 04:18:24,431 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:18:24,431 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:18:24,431 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:18:24,432 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:18:24,432 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:18:24,432 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:18:24,432 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 04:18:24,434 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) [2020-10-26 04:18:24,456 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 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:18:24,458 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:18:24,458 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:18:24,458 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:18:24,458 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:18:24,458 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:18:24,458 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:18:24,458 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 04:18:24,460 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 [2020-10-26 04:18:24,484 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 [2020-10-26 04:18:24,485 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:18:24,485 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:18:24,485 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:18:24,485 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:18:24,487 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 04:18:24,487 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-26 04:18:24,498 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) [2020-10-26 04:18:24,534 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 [2020-10-26 04:18:24,536 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:18:24,536 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:18:24,537 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:18:24,537 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:18:24,537 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:18:24,538 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:18:24,538 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:18:24,541 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 [2020-10-26 04:18:24,572 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 [2020-10-26 04:18:24,573 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:18:24,573 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:18:24,573 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:18:24,574 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:18:24,574 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:18:24,574 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:18:24,574 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 04:18:24,576 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 [2020-10-26 04:18:24,601 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 [2020-10-26 04:18:24,603 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:18:24,603 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:18:24,604 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:18:24,604 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:18:24,604 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:18:24,604 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:18:24,605 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 04:18:24,607 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) [2020-10-26 04:18:24,645 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 [2020-10-26 04:18:24,647 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:18:24,647 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:18:24,647 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:18:24,647 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:18:24,648 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:18:24,648 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:18:24,648 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 [2020-10-26 04:18:24,650 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 [2020-10-26 04:18:24,681 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 [2020-10-26 04:18:24,682 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:18:24,682 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:18:24,683 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:18:24,683 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:18:24,683 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:18:24,683 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:18:24,683 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 04:18:24,684 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 [2020-10-26 04:18:24,709 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 [2020-10-26 04:18:24,710 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:18:24,710 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:18:24,710 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:18:24,710 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:18:24,710 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:18:24,711 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:18:24,711 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 04:18:24,712 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 [2020-10-26 04:18:24,737 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 [2020-10-26 04:18:24,738 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:18:24,738 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:18:24,738 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:18:24,738 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:18:24,738 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:18:24,739 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:18:24,739 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 04:18:24,740 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 [2020-10-26 04:18:24,762 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 04:18:24,763 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:18:24,763 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:18:24,764 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:18:24,764 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:18:24,764 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:18:24,764 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:18:24,764 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 04:18:24,770 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) [2020-10-26 04:18:24,804 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 [2020-10-26 04:18:24,805 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:18:24,805 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:18:24,806 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:18:24,806 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:18:24,808 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 04:18:24,808 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:18:24,812 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 [2020-10-26 04:18:24,843 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 [2020-10-26 04:18:24,844 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:18:24,844 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:18:24,845 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:18:24,845 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:18:24,847 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 04:18:24,847 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-26 04:18:24,858 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) [2020-10-26 04:18:24,902 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 [2020-10-26 04:18:24,904 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:18:24,904 INFO L203 nArgumentSynthesizer]: 12 stem disjuncts [2020-10-26 04:18:24,904 INFO L204 nArgumentSynthesizer]: 4 loop disjuncts [2020-10-26 04:18:24,904 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:18:24,966 INFO L401 nArgumentSynthesizer]: We have 136 Motzkin's Theorem applications. [2020-10-26 04:18:24,967 INFO L402 nArgumentSynthesizer]: A total of 8 supporting invariants were added. [2020-10-26 04:18:25,084 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) Waiting until toolchain timeout for monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:18:25,107 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 04:18:25,109 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:18:25,109 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:18:25,109 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:18:25,109 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:18:25,111 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 04:18:25,111 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-26 04:18:25,114 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 39 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 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:18:25,139 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 [2020-10-26 04:18:25,141 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:18:25,141 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:18:25,141 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:18:25,141 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:18:25,145 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 04:18:25,145 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-26 04:18:25,156 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 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:18:25,191 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 04:18:25,193 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:18:25,193 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:18:25,194 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:18:25,194 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:18:25,202 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 04:18:25,203 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:18:25,214 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 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:18:25,236 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 [2020-10-26 04:18:25,237 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:18:25,237 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:18:25,238 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:18:25,238 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:18:25,239 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 04:18:25,240 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-26 04:18:25,243 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 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:18:25,281 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 [2020-10-26 04:18:25,282 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:18:25,283 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:18:25,283 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:18:25,283 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:18:25,286 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 04:18:25,286 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-26 04:18:25,293 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 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:18:25,338 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 [2020-10-26 04:18:25,341 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:18:25,341 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:18:25,342 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:18:25,342 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:18:25,364 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 04:18:25,365 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-26 04:18:25,393 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-26 04:18:25,460 INFO L443 ModelExtractionUtils]: Simplification made 18 calls to the SMT solver. [2020-10-26 04:18:25,460 INFO L444 ModelExtractionUtils]: 20 out of 55 variables were initially zero. Simplification set additionally 32 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 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 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:18:25,463 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-26 04:18:25,466 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-10-26 04:18:25,466 INFO L510 LassoAnalysis]: Proved termination. [2020-10-26 04:18:25,466 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_strcspn_~i~0, v_rep(select #length ULTIMATE.start_main_#t~malloc12.base)_3) = -2*ULTIMATE.start_strcspn_~i~0 + 3*v_rep(select #length ULTIMATE.start_main_#t~malloc12.base)_3 Supporting invariants [] [2020-10-26 04:18:25,660 INFO L297 tatePredicateManager]: 32 out of 35 supporting invariants were superfluous and have been removed [2020-10-26 04:18:25,671 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-10-26 04:18:25,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:18:25,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:18:25,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 26 conjunts are in the unsatisfiable core [2020-10-26 04:18:25,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:18:25,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:18:25,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-26 04:18:25,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:18:25,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:18:25,929 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.4 stem predicates 3 loop predicates [2020-10-26 04:18:25,929 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27 states and 30 transitions. cyclomatic complexity: 6 Second operand 7 states. [2020-10-26 04:18:26,009 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 27 states and 30 transitions. cyclomatic complexity: 6. Second operand 7 states. Result 27 states and 30 transitions. Complement of second has 5 states. [2020-10-26 04:18:26,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 3 stem states 0 non-accepting loop states 1 accepting loop states [2020-10-26 04:18:26,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-26 04:18:26,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 6 transitions. [2020-10-26 04:18:26,011 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 16 letters. Loop has 4 letters. [2020-10-26 04:18:26,011 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:18:26,011 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-26 04:18:26,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:18:26,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:18:26,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 26 conjunts are in the unsatisfiable core [2020-10-26 04:18:26,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:18:26,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:18:26,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-26 04:18:26,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:18:26,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:18:26,301 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.4 stem predicates 3 loop predicates [2020-10-26 04:18:26,301 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27 states and 30 transitions. cyclomatic complexity: 6 Second operand 7 states. [2020-10-26 04:18:26,378 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 27 states and 30 transitions. cyclomatic complexity: 6. Second operand 7 states. Result 27 states and 30 transitions. Complement of second has 5 states. [2020-10-26 04:18:26,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 3 stem states 0 non-accepting loop states 1 accepting loop states [2020-10-26 04:18:26,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-26 04:18:26,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 6 transitions. [2020-10-26 04:18:26,380 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 16 letters. Loop has 4 letters. [2020-10-26 04:18:26,380 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:18:26,381 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-26 04:18:26,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:18:26,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:18:26,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 26 conjunts are in the unsatisfiable core [2020-10-26 04:18:26,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:18:26,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:18:26,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-26 04:18:26,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:18:26,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:18:26,621 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.4 stem predicates 3 loop predicates [2020-10-26 04:18:26,622 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27 states and 30 transitions. cyclomatic complexity: 6 Second operand 7 states. [2020-10-26 04:18:26,840 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 27 states and 30 transitions. cyclomatic complexity: 6. Second operand 7 states. Result 56 states and 63 transitions. Complement of second has 11 states. [2020-10-26 04:18:26,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 4 stem states 2 non-accepting loop states 2 accepting loop states [2020-10-26 04:18:26,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-26 04:18:26,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 40 transitions. [2020-10-26 04:18:26,844 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 40 transitions. Stem has 16 letters. Loop has 4 letters. [2020-10-26 04:18:26,845 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:18:26,845 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 40 transitions. Stem has 20 letters. Loop has 4 letters. [2020-10-26 04:18:26,845 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:18:26,845 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 40 transitions. Stem has 16 letters. Loop has 8 letters. [2020-10-26 04:18:26,846 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:18:26,847 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 56 states and 63 transitions. [2020-10-26 04:18:26,848 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-26 04:18:26,849 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 56 states to 42 states and 46 transitions. [2020-10-26 04:18:26,849 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2020-10-26 04:18:26,849 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2020-10-26 04:18:26,850 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 46 transitions. [2020-10-26 04:18:26,850 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-26 04:18:26,850 INFO L691 BuchiCegarLoop]: Abstraction has 42 states and 46 transitions. [2020-10-26 04:18:26,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states and 46 transitions. [2020-10-26 04:18:26,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 37. [2020-10-26 04:18:26,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-26 04:18:26,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-10-26 04:18:26,854 INFO L714 BuchiCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-10-26 04:18:26,854 INFO L594 BuchiCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-10-26 04:18:26,855 INFO L427 BuchiCegarLoop]: ======== Iteration 6============ [2020-10-26 04:18:26,855 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 37 states and 41 transitions. [2020-10-26 04:18:26,856 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-26 04:18:26,856 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 04:18:26,856 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 04:18:26,857 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2020-10-26 04:18:26,857 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-10-26 04:18:26,857 INFO L794 eck$LassoCheckResult]: Stem: 1039#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 1033#L-1 havoc main_#res;havoc main_#t~nondet9, main_#t~malloc10.base, main_#t~malloc10.offset, main_#t~nondet11, main_#t~malloc12.base, main_#t~malloc12.offset, main_#t~ret13, main_~in_len~0, main_~in~0.base, main_~in~0.offset, main_~out_len~0, main_~out~0.base, main_~out~0.offset;main_~in_len~0 := main_#t~nondet9;havoc main_#t~nondet9; 1034#L519 assume !(main_~in_len~0 < 1);call main_#t~malloc10.base, main_#t~malloc10.offset := #Ultimate.allocOnStack(main_~in_len~0);main_~in~0.base, main_~in~0.offset := main_#t~malloc10.base, main_#t~malloc10.offset;call write~int(0, main_~in~0.base, main_~in~0.offset + (main_~in_len~0 - 1), 1);main_~out_len~0 := main_#t~nondet11;havoc main_#t~nondet11; 1044#L523 assume !(main_~out_len~0 < 1);call main_#t~malloc12.base, main_#t~malloc12.offset := #Ultimate.allocOnStack(main_~out_len~0);main_~out~0.base, main_~out~0.offset := main_#t~malloc12.base, main_#t~malloc12.offset;call write~int(0, main_~out~0.base, main_~out~0.offset + (main_~out_len~0 - 1), 1);strcspn_#in~s.base, strcspn_#in~s.offset, strcspn_#in~reject.base, strcspn_#in~reject.offset := main_~in~0.base, main_~in~0.offset, main_~out~0.base, main_~out~0.offset;havoc strcspn_#res;havoc strcspn_#t~mem4, strcspn_#t~mem5, strcspn_#t~pre3, strcspn_#t~mem6, strcspn_#t~pre7, strcspn_#t~pre2.base, strcspn_#t~pre2.offset, strcspn_#t~mem8, strcspn_~s.base, strcspn_~s.offset, strcspn_~reject.base, strcspn_~reject.offset, strcspn_~l~0, strcspn_~i~0;strcspn_~s.base, strcspn_~s.offset := strcspn_#in~s.base, strcspn_#in~s.offset;strcspn_~reject.base, strcspn_~reject.offset := strcspn_#in~reject.base, strcspn_#in~reject.offset;strcspn_~l~0 := 0;havoc strcspn_~i~0; 1050#L510-4 call strcspn_#t~mem8 := read~int(strcspn_~s.base, strcspn_~s.offset, 1); 1053#L510-1 assume !!(0 != strcspn_#t~mem8);havoc strcspn_#t~mem8;strcspn_~i~0 := 0; 1064#L511-4 call strcspn_#t~mem6 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 1061#L511-1 assume !!(0 != strcspn_#t~mem6);havoc strcspn_#t~mem6;call strcspn_#t~mem4 := read~int(strcspn_~s.base, strcspn_~s.offset, 1);call strcspn_#t~mem5 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 1063#L512 assume !(strcspn_#t~mem4 == strcspn_#t~mem5);havoc strcspn_#t~mem4;havoc strcspn_#t~mem5; 1062#L511-3 strcspn_#t~pre3 := 1 + strcspn_~i~0;strcspn_~i~0 := 1 + strcspn_~i~0;havoc strcspn_#t~pre3; 1060#L511-4 call strcspn_#t~mem6 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 1059#L511-1 assume !(0 != strcspn_#t~mem6);havoc strcspn_#t~mem6; 1058#L511-5 strcspn_#t~pre7 := 1 + strcspn_~l~0;strcspn_~l~0 := 1 + strcspn_~l~0;havoc strcspn_#t~pre7; 1048#L510-3 strcspn_#t~pre2.base, strcspn_#t~pre2.offset := strcspn_~s.base, 1 + strcspn_~s.offset;strcspn_~s.base, strcspn_~s.offset := strcspn_~s.base, 1 + strcspn_~s.offset;havoc strcspn_#t~pre2.base, strcspn_#t~pre2.offset; 1049#L510-4 call strcspn_#t~mem8 := read~int(strcspn_~s.base, strcspn_~s.offset, 1); 1042#L510-1 assume !!(0 != strcspn_#t~mem8);havoc strcspn_#t~mem8;strcspn_~i~0 := 0; 1043#L511-4 call strcspn_#t~mem6 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 1037#L511-1 assume !!(0 != strcspn_#t~mem6);havoc strcspn_#t~mem6;call strcspn_#t~mem4 := read~int(strcspn_~s.base, strcspn_~s.offset, 1);call strcspn_#t~mem5 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 1038#L512 assume !(strcspn_#t~mem4 == strcspn_#t~mem5);havoc strcspn_#t~mem4;havoc strcspn_#t~mem5; 1046#L511-3 strcspn_#t~pre3 := 1 + strcspn_~i~0;strcspn_~i~0 := 1 + strcspn_~i~0;havoc strcspn_#t~pre3; 1047#L511-4 call strcspn_#t~mem6 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 1065#L511-1 assume !(0 != strcspn_#t~mem6);havoc strcspn_#t~mem6; 1054#L511-5 strcspn_#t~pre7 := 1 + strcspn_~l~0;strcspn_~l~0 := 1 + strcspn_~l~0;havoc strcspn_#t~pre7; 1055#L510-3 strcspn_#t~pre2.base, strcspn_#t~pre2.offset := strcspn_~s.base, 1 + strcspn_~s.offset;strcspn_~s.base, strcspn_~s.offset := strcspn_~s.base, 1 + strcspn_~s.offset;havoc strcspn_#t~pre2.base, strcspn_#t~pre2.offset; 1056#L510-4 call strcspn_#t~mem8 := read~int(strcspn_~s.base, strcspn_~s.offset, 1); 1040#L510-1 assume !!(0 != strcspn_#t~mem8);havoc strcspn_#t~mem8;strcspn_~i~0 := 0; 1041#L511-4 [2020-10-26 04:18:26,858 INFO L796 eck$LassoCheckResult]: Loop: 1041#L511-4 call strcspn_#t~mem6 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 1035#L511-1 assume !!(0 != strcspn_#t~mem6);havoc strcspn_#t~mem6;call strcspn_#t~mem4 := read~int(strcspn_~s.base, strcspn_~s.offset, 1);call strcspn_#t~mem5 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 1036#L512 assume !(strcspn_#t~mem4 == strcspn_#t~mem5);havoc strcspn_#t~mem4;havoc strcspn_#t~mem5; 1045#L511-3 strcspn_#t~pre3 := 1 + strcspn_~i~0;strcspn_~i~0 := 1 + strcspn_~i~0;havoc strcspn_#t~pre3; 1041#L511-4 [2020-10-26 04:18:26,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:18:26,858 INFO L82 PathProgramCache]: Analyzing trace with hash 1550213327, now seen corresponding path program 4 times [2020-10-26 04:18:26,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:18:26,859 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781403181] [2020-10-26 04:18:26,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:18:26,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:18:26,882 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:18:26,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:18:26,898 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:18:26,904 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:18:26,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:18:26,905 INFO L82 PathProgramCache]: Analyzing trace with hash 1698248, now seen corresponding path program 4 times [2020-10-26 04:18:26,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:18:26,906 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578809695] [2020-10-26 04:18:26,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:18:26,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:18:26,911 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:18:26,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:18:26,914 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:18:26,916 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:18:26,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:18:26,917 INFO L82 PathProgramCache]: Analyzing trace with hash 229061526, now seen corresponding path program 5 times [2020-10-26 04:18:26,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:18:26,917 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595402536] [2020-10-26 04:18:26,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:18:26,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:18:26,934 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:18:26,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:18:26,959 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:18:26,975 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:18:28,279 WARN L193 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 216 DAG size of output: 172 [2020-10-26 04:18:28,549 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-26 04:18:28,552 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 04:18:28,552 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 04:18:28,552 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 04:18:28,552 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 04:18:28,552 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-26 04:18:28,553 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:18:28,553 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 04:18:28,553 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 04:18:28,553 INFO L133 ssoRankerPreferences]: Filename of dumped script: strcspn.i_Iteration6_Lasso [2020-10-26 04:18:28,553 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 04:18:28,553 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 04:18:28,558 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:18:28,577 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:18:28,580 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:18:28,583 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:18:28,586 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:18:28,590 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:18:28,594 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:18:28,597 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:18:28,600 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:18:29,451 WARN L193 SmtUtils]: Spent 456.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 97 [2020-10-26 04:18:29,651 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2020-10-26 04:18:29,654 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:18:29,656 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:18:29,659 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:18:29,662 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:18:29,672 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:18:29,675 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:18:29,678 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:18:29,682 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:18:30,033 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 55 [2020-10-26 04:18:30,155 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2020-10-26 04:18:30,436 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2020-10-26 04:18:32,438 WARN L193 SmtUtils]: Spent 1.95 s on a formula simplification. DAG size of input: 97 DAG size of output: 69 [2020-10-26 04:18:32,494 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 04:18:32,495 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:18:32,498 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 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:18:32,499 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:18:32,500 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:18:32,500 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:18:32,500 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:18:32,501 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 04:18:32,502 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-26 04:18:32,506 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 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:18:32,529 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 [2020-10-26 04:18:32,530 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:18:32,530 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:18:32,531 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:18:32,531 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:18:32,531 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:18:32,531 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:18:32,531 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 04:18:32,533 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 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:18:32,558 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 [2020-10-26 04:18:32,560 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:18:32,560 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:18:32,560 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:18:32,560 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:18:32,560 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:18:32,561 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:18:32,561 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:18:32,563 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 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:18:32,585 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 [2020-10-26 04:18:32,587 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:18:32,587 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:18:32,587 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:18:32,587 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:18:32,589 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 04:18:32,589 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-26 04:18:32,593 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 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:18:32,616 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 [2020-10-26 04:18:32,618 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:18:32,618 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:18:32,618 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:18:32,618 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:18:32,618 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:18:32,619 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:18:32,619 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 04:18:32,620 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 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:18:32,643 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 [2020-10-26 04:18:32,644 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:18:32,645 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:18:32,645 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:18:32,645 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:18:32,645 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:18:32,645 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:18:32,645 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:18:32,649 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 51 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 51 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:18:32,672 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 [2020-10-26 04:18:32,674 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:18:32,674 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:18:32,674 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:18:32,674 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:18:32,675 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:18:32,675 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:18:32,675 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 04:18:32,677 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 52 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 52 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:18:32,703 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 [2020-10-26 04:18:32,705 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:18:32,705 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:18:32,705 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:18:32,705 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:18:32,705 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:18:32,705 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:18:32,705 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 04:18:32,707 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 53 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 53 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:18:32,731 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 [2020-10-26 04:18:32,732 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:18:32,732 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:18:32,732 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:18:32,732 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:18:32,734 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 04:18:32,734 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-26 04:18:32,738 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 54 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:18:32,773 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 [2020-10-26 04:18:32,775 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:18:32,775 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:18:32,775 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:18:32,775 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:18:32,778 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 04:18:32,778 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 54 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:18:32,790 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 55 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:18:32,833 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 [2020-10-26 04:18:32,835 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:18:32,835 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:18:32,835 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:18:32,835 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:18:32,837 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 04:18:32,837 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 55 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:18:32,841 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 56 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 56 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:18:32,863 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 [2020-10-26 04:18:32,865 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:18:32,865 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:18:32,865 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:18:32,865 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:18:32,867 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 04:18:32,867 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-26 04:18:32,871 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 57 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:18:32,897 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 [2020-10-26 04:18:32,898 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:18:32,899 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:18:32,899 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:18:32,899 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 57 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:18:32,900 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 04:18:32,900 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-26 04:18:32,903 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 58 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:18:32,926 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 [2020-10-26 04:18:32,928 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:18:32,928 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:18:32,928 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:18:32,928 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:18:32,936 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 04:18:32,937 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-26 04:18:32,949 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 59 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:18:32,983 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 [2020-10-26 04:18:32,985 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:18:32,985 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:18:32,985 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:18:32,985 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:18:32,989 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 04:18:32,989 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-26 04:18:32,996 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 60 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:18:33,020 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 [2020-10-26 04:18:33,022 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:18:33,022 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:18:33,023 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:18:33,023 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:18:33,037 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 04:18:33,037 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-26 04:18:33,061 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-26 04:18:33,098 INFO L443 ModelExtractionUtils]: Simplification made 7 calls to the SMT solver. [2020-10-26 04:18:33,098 INFO L444 ModelExtractionUtils]: 20 out of 55 variables were initially zero. Simplification set additionally 32 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 61 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:18:33,101 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-26 04:18:33,103 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-10-26 04:18:33,103 INFO L510 LassoAnalysis]: Proved termination. [2020-10-26 04:18:33,103 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_strcspn_~i~0, v_rep(select #length ULTIMATE.start_strcspn_~reject.base)_4) = -2*ULTIMATE.start_strcspn_~i~0 + 5*v_rep(select #length ULTIMATE.start_strcspn_~reject.base)_4 Supporting invariants [] [2020-10-26 04:18:33,297 INFO L297 tatePredicateManager]: 35 out of 36 supporting invariants were superfluous and have been removed [2020-10-26 04:18:33,299 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-10-26 04:18:33,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:18:33,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:18:33,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 22 conjunts are in the unsatisfiable core [2020-10-26 04:18:33,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:18:33,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:18:33,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-26 04:18:33,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:18:33,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:18:33,549 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.5 stem predicates 3 loop predicates [2020-10-26 04:18:33,549 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 37 states and 41 transitions. cyclomatic complexity: 8 Second operand 8 states. [2020-10-26 04:18:33,623 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 37 states and 41 transitions. cyclomatic complexity: 8. Second operand 8 states. Result 37 states and 41 transitions. Complement of second has 5 states. [2020-10-26 04:18:33,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 3 stem states 0 non-accepting loop states 1 accepting loop states [2020-10-26 04:18:33,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-10-26 04:18:33,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 6 transitions. [2020-10-26 04:18:33,626 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 26 letters. Loop has 4 letters. [2020-10-26 04:18:33,626 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:18:33,626 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-26 04:18:33,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:18:33,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:18:33,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 22 conjunts are in the unsatisfiable core [2020-10-26 04:18:33,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:18:33,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:18:33,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-26 04:18:33,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:18:33,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:18:33,878 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.5 stem predicates 3 loop predicates [2020-10-26 04:18:33,878 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 37 states and 41 transitions. cyclomatic complexity: 8 Second operand 8 states. [2020-10-26 04:18:33,997 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 37 states and 41 transitions. cyclomatic complexity: 8. Second operand 8 states. Result 37 states and 41 transitions. Complement of second has 5 states. [2020-10-26 04:18:33,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 3 stem states 0 non-accepting loop states 1 accepting loop states [2020-10-26 04:18:33,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-10-26 04:18:33,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 6 transitions. [2020-10-26 04:18:33,999 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 26 letters. Loop has 4 letters. [2020-10-26 04:18:33,999 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:18:33,999 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-26 04:18:34,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:18:34,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:18:34,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 22 conjunts are in the unsatisfiable core [2020-10-26 04:18:34,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:18:34,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:18:34,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-26 04:18:34,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:18:34,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:18:34,255 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.5 stem predicates 3 loop predicates [2020-10-26 04:18:34,256 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 37 states and 41 transitions. cyclomatic complexity: 8 Second operand 8 states. [2020-10-26 04:18:34,515 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 37 states and 41 transitions. cyclomatic complexity: 8. Second operand 8 states. Result 66 states and 74 transitions. Complement of second has 13 states. [2020-10-26 04:18:34,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 9 states 5 stem states 2 non-accepting loop states 2 accepting loop states [2020-10-26 04:18:34,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-10-26 04:18:34,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 50 transitions. [2020-10-26 04:18:34,517 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 50 transitions. Stem has 26 letters. Loop has 4 letters. [2020-10-26 04:18:34,518 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:18:34,518 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 50 transitions. Stem has 30 letters. Loop has 4 letters. [2020-10-26 04:18:34,518 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:18:34,518 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 50 transitions. Stem has 26 letters. Loop has 8 letters. [2020-10-26 04:18:34,519 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:18:34,519 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 66 states and 74 transitions. [2020-10-26 04:18:34,521 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-26 04:18:34,522 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 66 states to 52 states and 57 transitions. [2020-10-26 04:18:34,522 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2020-10-26 04:18:34,523 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2020-10-26 04:18:34,523 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 57 transitions. [2020-10-26 04:18:34,523 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-26 04:18:34,523 INFO L691 BuchiCegarLoop]: Abstraction has 52 states and 57 transitions. [2020-10-26 04:18:34,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states and 57 transitions. [2020-10-26 04:18:34,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 47. [2020-10-26 04:18:34,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-26 04:18:34,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 52 transitions. [2020-10-26 04:18:34,529 INFO L714 BuchiCegarLoop]: Abstraction has 47 states and 52 transitions. [2020-10-26 04:18:34,529 INFO L594 BuchiCegarLoop]: Abstraction has 47 states and 52 transitions. [2020-10-26 04:18:34,529 INFO L427 BuchiCegarLoop]: ======== Iteration 7============ [2020-10-26 04:18:34,529 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 47 states and 52 transitions. [2020-10-26 04:18:34,530 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-26 04:18:34,530 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 04:18:34,530 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 04:18:34,532 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [6, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1] [2020-10-26 04:18:34,532 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-10-26 04:18:34,532 INFO L794 eck$LassoCheckResult]: Stem: 1711#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 1705#L-1 havoc main_#res;havoc main_#t~nondet9, main_#t~malloc10.base, main_#t~malloc10.offset, main_#t~nondet11, main_#t~malloc12.base, main_#t~malloc12.offset, main_#t~ret13, main_~in_len~0, main_~in~0.base, main_~in~0.offset, main_~out_len~0, main_~out~0.base, main_~out~0.offset;main_~in_len~0 := main_#t~nondet9;havoc main_#t~nondet9; 1706#L519 assume !(main_~in_len~0 < 1);call main_#t~malloc10.base, main_#t~malloc10.offset := #Ultimate.allocOnStack(main_~in_len~0);main_~in~0.base, main_~in~0.offset := main_#t~malloc10.base, main_#t~malloc10.offset;call write~int(0, main_~in~0.base, main_~in~0.offset + (main_~in_len~0 - 1), 1);main_~out_len~0 := main_#t~nondet11;havoc main_#t~nondet11; 1716#L523 assume !(main_~out_len~0 < 1);call main_#t~malloc12.base, main_#t~malloc12.offset := #Ultimate.allocOnStack(main_~out_len~0);main_~out~0.base, main_~out~0.offset := main_#t~malloc12.base, main_#t~malloc12.offset;call write~int(0, main_~out~0.base, main_~out~0.offset + (main_~out_len~0 - 1), 1);strcspn_#in~s.base, strcspn_#in~s.offset, strcspn_#in~reject.base, strcspn_#in~reject.offset := main_~in~0.base, main_~in~0.offset, main_~out~0.base, main_~out~0.offset;havoc strcspn_#res;havoc strcspn_#t~mem4, strcspn_#t~mem5, strcspn_#t~pre3, strcspn_#t~mem6, strcspn_#t~pre7, strcspn_#t~pre2.base, strcspn_#t~pre2.offset, strcspn_#t~mem8, strcspn_~s.base, strcspn_~s.offset, strcspn_~reject.base, strcspn_~reject.offset, strcspn_~l~0, strcspn_~i~0;strcspn_~s.base, strcspn_~s.offset := strcspn_#in~s.base, strcspn_#in~s.offset;strcspn_~reject.base, strcspn_~reject.offset := strcspn_#in~reject.base, strcspn_#in~reject.offset;strcspn_~l~0 := 0;havoc strcspn_~i~0; 1724#L510-4 call strcspn_#t~mem8 := read~int(strcspn_~s.base, strcspn_~s.offset, 1); 1727#L510-1 assume !!(0 != strcspn_#t~mem8);havoc strcspn_#t~mem8;strcspn_~i~0 := 0; 1751#L511-4 call strcspn_#t~mem6 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 1748#L511-1 assume !!(0 != strcspn_#t~mem6);havoc strcspn_#t~mem6;call strcspn_#t~mem4 := read~int(strcspn_~s.base, strcspn_~s.offset, 1);call strcspn_#t~mem5 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 1750#L512 assume !(strcspn_#t~mem4 == strcspn_#t~mem5);havoc strcspn_#t~mem4;havoc strcspn_#t~mem5; 1749#L511-3 strcspn_#t~pre3 := 1 + strcspn_~i~0;strcspn_~i~0 := 1 + strcspn_~i~0;havoc strcspn_#t~pre3; 1747#L511-4 call strcspn_#t~mem6 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 1746#L511-1 assume !(0 != strcspn_#t~mem6);havoc strcspn_#t~mem6; 1745#L511-5 strcspn_#t~pre7 := 1 + strcspn_~l~0;strcspn_~l~0 := 1 + strcspn_~l~0;havoc strcspn_#t~pre7; 1744#L510-3 strcspn_#t~pre2.base, strcspn_#t~pre2.offset := strcspn_~s.base, 1 + strcspn_~s.offset;strcspn_~s.base, strcspn_~s.offset := strcspn_~s.base, 1 + strcspn_~s.offset;havoc strcspn_#t~pre2.base, strcspn_#t~pre2.offset; 1728#L510-4 call strcspn_#t~mem8 := read~int(strcspn_~s.base, strcspn_~s.offset, 1); 1714#L510-1 assume !!(0 != strcspn_#t~mem8);havoc strcspn_#t~mem8;strcspn_~i~0 := 0; 1715#L511-4 call strcspn_#t~mem6 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 1737#L511-1 assume !!(0 != strcspn_#t~mem6);havoc strcspn_#t~mem6;call strcspn_#t~mem4 := read~int(strcspn_~s.base, strcspn_~s.offset, 1);call strcspn_#t~mem5 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 1738#L512 assume !(strcspn_#t~mem4 == strcspn_#t~mem5);havoc strcspn_#t~mem4;havoc strcspn_#t~mem5; 1718#L511-3 strcspn_#t~pre3 := 1 + strcspn_~i~0;strcspn_~i~0 := 1 + strcspn_~i~0;havoc strcspn_#t~pre3; 1719#L511-4 call strcspn_#t~mem6 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 1734#L511-1 assume !(0 != strcspn_#t~mem6);havoc strcspn_#t~mem6; 1726#L511-5 strcspn_#t~pre7 := 1 + strcspn_~l~0;strcspn_~l~0 := 1 + strcspn_~l~0;havoc strcspn_#t~pre7; 1722#L510-3 strcspn_#t~pre2.base, strcspn_#t~pre2.offset := strcspn_~s.base, 1 + strcspn_~s.offset;strcspn_~s.base, strcspn_~s.offset := strcspn_~s.base, 1 + strcspn_~s.offset;havoc strcspn_#t~pre2.base, strcspn_#t~pre2.offset; 1723#L510-4 call strcspn_#t~mem8 := read~int(strcspn_~s.base, strcspn_~s.offset, 1); 1743#L510-1 assume !!(0 != strcspn_#t~mem8);havoc strcspn_#t~mem8;strcspn_~i~0 := 0; 1720#L511-4 call strcspn_#t~mem6 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 1721#L511-1 assume !!(0 != strcspn_#t~mem6);havoc strcspn_#t~mem6;call strcspn_#t~mem4 := read~int(strcspn_~s.base, strcspn_~s.offset, 1);call strcspn_#t~mem5 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 1741#L512 assume !(strcspn_#t~mem4 == strcspn_#t~mem5);havoc strcspn_#t~mem4;havoc strcspn_#t~mem5; 1740#L511-3 strcspn_#t~pre3 := 1 + strcspn_~i~0;strcspn_~i~0 := 1 + strcspn_~i~0;havoc strcspn_#t~pre3; 1739#L511-4 call strcspn_#t~mem6 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 1733#L511-1 assume !(0 != strcspn_#t~mem6);havoc strcspn_#t~mem6; 1732#L511-5 strcspn_#t~pre7 := 1 + strcspn_~l~0;strcspn_~l~0 := 1 + strcspn_~l~0;havoc strcspn_#t~pre7; 1731#L510-3 strcspn_#t~pre2.base, strcspn_#t~pre2.offset := strcspn_~s.base, 1 + strcspn_~s.offset;strcspn_~s.base, strcspn_~s.offset := strcspn_~s.base, 1 + strcspn_~s.offset;havoc strcspn_#t~pre2.base, strcspn_#t~pre2.offset; 1729#L510-4 call strcspn_#t~mem8 := read~int(strcspn_~s.base, strcspn_~s.offset, 1); 1712#L510-1 assume !!(0 != strcspn_#t~mem8);havoc strcspn_#t~mem8;strcspn_~i~0 := 0; 1713#L511-4 [2020-10-26 04:18:34,533 INFO L796 eck$LassoCheckResult]: Loop: 1713#L511-4 call strcspn_#t~mem6 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 1707#L511-1 assume !!(0 != strcspn_#t~mem6);havoc strcspn_#t~mem6;call strcspn_#t~mem4 := read~int(strcspn_~s.base, strcspn_~s.offset, 1);call strcspn_#t~mem5 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 1708#L512 assume !(strcspn_#t~mem4 == strcspn_#t~mem5);havoc strcspn_#t~mem4;havoc strcspn_#t~mem5; 1717#L511-3 strcspn_#t~pre3 := 1 + strcspn_~i~0;strcspn_~i~0 := 1 + strcspn_~i~0;havoc strcspn_#t~pre3; 1713#L511-4 [2020-10-26 04:18:34,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:18:34,533 INFO L82 PathProgramCache]: Analyzing trace with hash -43865248, now seen corresponding path program 6 times [2020-10-26 04:18:34,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:18:34,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146782384] [2020-10-26 04:18:34,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:18:34,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:18:34,552 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:18:34,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:18:34,569 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:18:34,577 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:18:34,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:18:34,578 INFO L82 PathProgramCache]: Analyzing trace with hash 1698248, now seen corresponding path program 5 times [2020-10-26 04:18:34,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:18:34,579 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189320338] [2020-10-26 04:18:34,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:18:34,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:18:34,583 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:18:34,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:18:34,586 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:18:34,588 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:18:34,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:18:34,589 INFO L82 PathProgramCache]: Analyzing trace with hash -345387609, now seen corresponding path program 7 times [2020-10-26 04:18:34,589 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:18:34,589 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372099790] [2020-10-26 04:18:34,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:18:34,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:18:34,607 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:18:34,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:18:34,625 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:18:34,633 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:18:36,380 WARN L193 SmtUtils]: Spent 1.62 s on a formula simplification. DAG size of input: 263 DAG size of output: 201 [2020-10-26 04:18:36,654 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-26 04:18:36,659 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 04:18:36,659 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 04:18:36,659 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 04:18:36,659 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 04:18:36,659 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-26 04:18:36,659 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:18:36,659 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 04:18:36,659 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 04:18:36,660 INFO L133 ssoRankerPreferences]: Filename of dumped script: strcspn.i_Iteration7_Lasso [2020-10-26 04:18:36,660 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 04:18:36,660 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 04:18:36,664 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:18:37,530 WARN L193 SmtUtils]: Spent 491.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 101 [2020-10-26 04:18:37,715 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 54 [2020-10-26 04:18:37,716 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:18:37,719 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:18:37,724 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:18:37,727 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:18:37,731 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:18:37,734 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:18:37,738 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:18:37,741 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:18:37,746 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:18:37,748 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:18:37,750 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:18:37,753 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:18:37,757 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:18:37,760 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:18:37,764 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:18:37,767 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:18:38,111 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2020-10-26 04:18:38,218 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 8 [2020-10-26 04:18:50,789 WARN L193 SmtUtils]: Spent 12.44 s on a formula simplification. DAG size of input: 298 DAG size of output: 150 [2020-10-26 04:18:50,972 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2020-10-26 04:18:51,084 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 04:18:51,085 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 62 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:18:51,094 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 [2020-10-26 04:18:51,095 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:18:51,096 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:18:51,096 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:18:51,096 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:18:51,099 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 04:18:51,099 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 62 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:18:51,106 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 63 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:18:51,136 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 [2020-10-26 04:18:51,137 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:18:51,138 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:18:51,138 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:18:51,138 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:18:51,139 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 04:18:51,139 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-26 04:18:51,142 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 64 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 64 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:18:51,165 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 [2020-10-26 04:18:51,167 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:18:51,167 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:18:51,167 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:18:51,168 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:18:51,176 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 04:18:51,176 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-26 04:18:51,188 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 65 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:18:51,212 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 [2020-10-26 04:18:51,214 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:18:51,214 INFO L203 nArgumentSynthesizer]: 108 stem disjuncts [2020-10-26 04:18:51,214 INFO L204 nArgumentSynthesizer]: 4 loop disjuncts [2020-10-26 04:18:51,215 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:18:51,843 INFO L401 nArgumentSynthesizer]: We have 904 Motzkin's Theorem applications. [2020-10-26 04:18:51,843 INFO L402 nArgumentSynthesizer]: A total of 8 supporting invariants were added. [2020-10-26 04:18:52,926 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 66 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 66 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:18:52,957 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 [2020-10-26 04:18:52,958 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:18:52,958 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:18:52,958 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:18:52,958 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:18:52,962 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 04:18:52,962 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-26 04:18:52,969 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 67 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:18:53,004 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 [2020-10-26 04:18:53,006 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:18:53,006 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:18:53,006 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:18:53,006 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:18:53,008 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 04:18:53,008 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 67 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:18:53,012 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 68 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:18:53,050 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 [2020-10-26 04:18:53,053 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:18:53,053 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:18:53,053 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:18:53,053 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:18:53,067 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 04:18:53,067 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 68 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:18:53,094 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-26 04:18:53,143 INFO L443 ModelExtractionUtils]: Simplification made 13 calls to the SMT solver. [2020-10-26 04:18:53,143 INFO L444 ModelExtractionUtils]: 23 out of 55 variables were initially zero. Simplification set additionally 28 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 69 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:18:53,149 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 69 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:18:53,152 INFO L438 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2020-10-26 04:18:53,152 INFO L510 LassoAnalysis]: Proved termination. [2020-10-26 04:18:53,152 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_strcspn_~i~0, v_rep(select #length ULTIMATE.start_main_#t~malloc12.base)_5) = -1*ULTIMATE.start_strcspn_~i~0 + 1*v_rep(select #length ULTIMATE.start_main_#t~malloc12.base)_5 Supporting invariants [1*ULTIMATE.start_strcspn_#in~s.offset >= 0] [2020-10-26 04:18:53,497 INFO L297 tatePredicateManager]: 43 out of 47 supporting invariants were superfluous and have been removed [2020-10-26 04:18:53,506 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-10-26 04:18:53,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:18:53,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:18:53,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 24 conjunts are in the unsatisfiable core [2020-10-26 04:18:53,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:18:53,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:18:53,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-26 04:18:53,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:18:53,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:18:53,783 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.4 stem predicates 2 loop predicates [2020-10-26 04:18:53,783 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 47 states and 52 transitions. cyclomatic complexity: 10 Second operand 6 states. [2020-10-26 04:18:53,871 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 47 states and 52 transitions. cyclomatic complexity: 10. Second operand 6 states. Result 55 states and 61 transitions. Complement of second has 7 states. [2020-10-26 04:18:53,874 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 [2020-10-26 04:18:53,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-26 04:18:53,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 14 transitions. [2020-10-26 04:18:53,875 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 36 letters. Loop has 4 letters. [2020-10-26 04:18:53,875 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:18:53,875 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-26 04:18:53,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:18:53,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:18:53,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 24 conjunts are in the unsatisfiable core [2020-10-26 04:18:53,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:18:54,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:18:54,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-26 04:18:54,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:18:54,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:18:54,091 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.4 stem predicates 2 loop predicates [2020-10-26 04:18:54,092 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 47 states and 52 transitions. cyclomatic complexity: 10 Second operand 6 states. [2020-10-26 04:18:54,211 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 47 states and 52 transitions. cyclomatic complexity: 10. Second operand 6 states. Result 55 states and 61 transitions. Complement of second has 7 states. [2020-10-26 04:18:54,214 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 [2020-10-26 04:18:54,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-26 04:18:54,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 14 transitions. [2020-10-26 04:18:54,215 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 36 letters. Loop has 4 letters. [2020-10-26 04:18:54,215 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:18:54,215 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-26 04:18:54,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:18:54,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:18:54,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 24 conjunts are in the unsatisfiable core [2020-10-26 04:18:54,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:18:54,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:18:54,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-26 04:18:54,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:18:54,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:18:54,442 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.4 stem predicates 2 loop predicates [2020-10-26 04:18:54,442 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 47 states and 52 transitions. cyclomatic complexity: 10 Second operand 6 states. [2020-10-26 04:18:54,601 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 47 states and 52 transitions. cyclomatic complexity: 10. Second operand 6 states. Result 80 states and 91 transitions. Complement of second has 9 states. [2020-10-26 04:18:54,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 4 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-26 04:18:54,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-26 04:18:54,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 32 transitions. [2020-10-26 04:18:54,606 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 32 transitions. Stem has 36 letters. Loop has 4 letters. [2020-10-26 04:18:54,606 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:18:54,607 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 32 transitions. Stem has 40 letters. Loop has 4 letters. [2020-10-26 04:18:54,607 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:18:54,607 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 32 transitions. Stem has 36 letters. Loop has 8 letters. [2020-10-26 04:18:54,608 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:18:54,608 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 80 states and 91 transitions. [2020-10-26 04:18:54,613 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-26 04:18:54,616 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 80 states to 0 states and 0 transitions. [2020-10-26 04:18:54,617 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-10-26 04:18:54,617 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-10-26 04:18:54,617 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-10-26 04:18:54,617 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-26 04:18:54,617 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 04:18:54,618 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 04:18:54,618 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 04:18:54,618 INFO L427 BuchiCegarLoop]: ======== Iteration 8============ [2020-10-26 04:18:54,619 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-10-26 04:18:54,619 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-26 04:18:54,619 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-10-26 04:18:54,625 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 26.10 04:18:54 BoogieIcfgContainer [2020-10-26 04:18:54,626 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-10-26 04:18:54,629 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-26 04:18:54,629 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-26 04:18:54,629 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-26 04:18:54,630 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 04:18:13" (3/4) ... [2020-10-26 04:18:54,633 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-26 04:18:54,633 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-26 04:18:54,635 INFO L168 Benchmark]: Toolchain (without parser) took 42435.89 ms. Allocated memory was 48.2 MB in the beginning and 182.5 MB in the end (delta: 134.2 MB). Free memory was 31.2 MB in the beginning and 131.0 MB in the end (delta: -99.8 MB). Peak memory consumption was 36.9 MB. Max. memory is 16.1 GB. [2020-10-26 04:18:54,635 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 37.7 MB. Free memory is still 20.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 04:18:54,635 INFO L168 Benchmark]: CACSL2BoogieTranslator took 486.20 ms. Allocated memory is still 48.2 MB. Free memory was 30.6 MB in the beginning and 21.8 MB in the end (delta: 8.7 MB). Peak memory consumption was 13.9 MB. Max. memory is 16.1 GB. [2020-10-26 04:18:54,640 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.80 ms. Allocated memory is still 48.2 MB. Free memory was 21.7 MB in the beginning and 20.0 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 04:18:54,641 INFO L168 Benchmark]: Boogie Preprocessor took 33.37 ms. Allocated memory is still 48.2 MB. Free memory was 20.0 MB in the beginning and 30.9 MB in the end (delta: -11.0 MB). Peak memory consumption was 2.3 MB. Max. memory is 16.1 GB. [2020-10-26 04:18:54,645 INFO L168 Benchmark]: RCFGBuilder took 410.40 ms. Allocated memory is still 48.2 MB. Free memory was 30.9 MB in the beginning and 27.6 MB in the end (delta: 3.3 MB). Peak memory consumption was 13.4 MB. Max. memory is 16.1 GB. [2020-10-26 04:18:54,646 INFO L168 Benchmark]: BuchiAutomizer took 41436.22 ms. Allocated memory was 48.2 MB in the beginning and 182.5 MB in the end (delta: 134.2 MB). Free memory was 27.4 MB in the beginning and 131.0 MB in the end (delta: -103.6 MB). Peak memory consumption was 32.4 MB. Max. memory is 16.1 GB. [2020-10-26 04:18:54,646 INFO L168 Benchmark]: Witness Printer took 4.99 ms. Allocated memory is still 182.5 MB. Free memory is still 131.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 04:18:54,654 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 37.7 MB. Free memory is still 20.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 486.20 ms. Allocated memory is still 48.2 MB. Free memory was 30.6 MB in the beginning and 21.8 MB in the end (delta: 8.7 MB). Peak memory consumption was 13.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 51.80 ms. Allocated memory is still 48.2 MB. Free memory was 21.7 MB in the beginning and 20.0 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 33.37 ms. Allocated memory is still 48.2 MB. Free memory was 20.0 MB in the beginning and 30.9 MB in the end (delta: -11.0 MB). Peak memory consumption was 2.3 MB. Max. memory is 16.1 GB. * RCFGBuilder took 410.40 ms. Allocated memory is still 48.2 MB. Free memory was 30.9 MB in the beginning and 27.6 MB in the end (delta: 3.3 MB). Peak memory consumption was 13.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 41436.22 ms. Allocated memory was 48.2 MB in the beginning and 182.5 MB in the end (delta: 134.2 MB). Free memory was 27.4 MB in the beginning and 131.0 MB in the end (delta: -103.6 MB). Peak memory consumption was 32.4 MB. Max. memory is 16.1 GB. * Witness Printer took 4.99 ms. Allocated memory is still 182.5 MB. Free memory is still 131.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 7 terminating modules (2 trivial, 2 deterministic, 3 nondeterministic). One deterministic module has affine ranking function -1 * s + unknown-#length-unknown[__builtin_alloca (in_len)] and consists of 4 locations. One deterministic module has affine ranking function -1 * i + -1 * reject + unknown-#length-unknown[reject] and consists of 3 locations. One nondeterministic module has affine ranking function -2 * i + 3 * unknown-#length-unknown[__builtin_alloca (out_len)] and consists of 8 locations. One nondeterministic module has affine ranking function -2 * i + 5 * unknown-#length-unknown[reject] and consists of 9 locations. One nondeterministic module has affine ranking function -1 * i + unknown-#length-unknown[__builtin_alloca (out_len)] and consists of 6 locations. 2 modules have a trivial ranking function, the largest among these consists of 8 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 41.3s and 8 iterations. TraceHistogramMax:6. Analysis of lassos took 37.1s. Construction of modules took 0.3s. Büchi inclusion checks took 3.6s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 5. Automata minimization 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 24 StatesRemovedByMinimization, 4 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 47 states and ocurred in iteration 6. Nontrivial modules had stage [2, 0, 3, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 134 SDtfs, 325 SDslu, 164 SDs, 0 SdLazy, 228 SolverSat, 61 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT0 conc1 concLT0 SILN0 SILU0 SILI0 SILT0 lasso5 LassoPreprocessingBenchmarks: Lassos: inital268 mio100 ax100 hnf99 lsp96 ukn77 mio100 lsp44 div100 bol100 ite100 ukn100 eq187 hnf87 smp97 dnf1547 smp67 tf100 neg89 sie127 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 1717ms VariablesStem: 6 VariablesLoop: 2 DisjunctsStem: 108 DisjunctsLoop: 4 SupportingInvariants: 8 MotzkinApplications: 904 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...