./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/array-memsafety/cstrlen-alloca-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 906a4fb5 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/array-memsafety/cstrlen-alloca-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a9da884533d6d47d95abcc742a22337ea753025b ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-906a4fb [2020-10-19 20:25:22,657 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 20:25:22,660 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 20:25:22,701 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 20:25:22,701 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 20:25:22,710 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 20:25:22,713 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 20:25:22,716 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 20:25:22,718 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 20:25:22,720 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 20:25:22,721 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 20:25:22,723 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 20:25:22,725 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 20:25:22,728 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 20:25:22,731 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 20:25:22,732 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 20:25:22,734 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 20:25:22,736 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 20:25:22,738 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 20:25:22,743 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 20:25:22,745 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 20:25:22,747 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 20:25:22,749 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 20:25:22,750 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 20:25:22,757 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 20:25:22,757 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 20:25:22,758 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 20:25:22,759 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 20:25:22,762 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 20:25:22,763 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 20:25:22,763 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 20:25:22,764 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 20:25:22,765 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 20:25:22,768 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 20:25:22,769 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 20:25:22,770 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 20:25:22,770 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 20:25:22,771 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 20:25:22,771 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 20:25:22,772 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 20:25:22,773 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 20:25:22,773 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-10-19 20:25:22,799 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 20:25:22,799 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 20:25:22,800 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 20:25:22,801 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 20:25:22,801 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 20:25:22,801 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-19 20:25:22,802 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-19 20:25:22,802 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-19 20:25:22,802 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-19 20:25:22,802 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-19 20:25:22,803 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-19 20:25:22,803 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 20:25:22,803 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 20:25:22,804 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 20:25:22,804 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 20:25:22,804 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 20:25:22,805 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 20:25:22,805 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-19 20:25:22,805 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-19 20:25:22,805 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-19 20:25:22,806 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 20:25:22,806 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-19 20:25:22,806 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-19 20:25:22,806 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 20:25:22,807 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-19 20:25:22,807 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 20:25:22,807 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 20:25:22,808 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-19 20:25:22,808 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 20:25:22,808 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 20:25:22,808 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 20:25:22,809 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-19 20:25:22,810 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-19 20:25:22,810 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a9da884533d6d47d95abcc742a22337ea753025b [2020-10-19 20:25:23,141 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 20:25:23,164 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 20:25:23,169 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 20:25:23,171 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 20:25:23,172 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 20:25:23,173 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/cstrlen-alloca-2.i [2020-10-19 20:25:23,250 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3de9cf4be/bc3ec0e41d0645c9b62660d7b5ee9697/FLAG62d89153a [2020-10-19 20:25:23,863 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 20:25:23,864 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/cstrlen-alloca-2.i [2020-10-19 20:25:23,878 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3de9cf4be/bc3ec0e41d0645c9b62660d7b5ee9697/FLAG62d89153a [2020-10-19 20:25:24,099 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3de9cf4be/bc3ec0e41d0645c9b62660d7b5ee9697 [2020-10-19 20:25:24,104 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 20:25:24,112 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-19 20:25:24,115 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 20:25:24,116 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 20:25:24,119 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 20:25:24,121 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 08:25:24" (1/1) ... [2020-10-19 20:25:24,124 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26f1dba4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 08:25:24, skipping insertion in model container [2020-10-19 20:25:24,125 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 08:25:24" (1/1) ... [2020-10-19 20:25:24,134 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 20:25:24,188 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 20:25:24,610 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 20:25:24,624 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 20:25:24,673 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 20:25:24,745 INFO L208 MainTranslator]: Completed translation [2020-10-19 20:25:24,745 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 08:25:24 WrapperNode [2020-10-19 20:25:24,745 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 20:25:24,746 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-19 20:25:24,747 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-19 20:25:24,747 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-19 20:25:24,755 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 08:25:24" (1/1) ... [2020-10-19 20:25:24,775 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 08:25:24" (1/1) ... [2020-10-19 20:25:24,795 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-19 20:25:24,796 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 20:25:24,796 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 20:25:24,796 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 20:25:24,806 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 08:25:24" (1/1) ... [2020-10-19 20:25:24,807 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 08:25:24" (1/1) ... [2020-10-19 20:25:24,810 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 08:25:24" (1/1) ... [2020-10-19 20:25:24,810 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 08:25:24" (1/1) ... [2020-10-19 20:25:24,817 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 08:25:24" (1/1) ... [2020-10-19 20:25:24,822 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 08:25:24" (1/1) ... [2020-10-19 20:25:24,824 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 08:25:24" (1/1) ... [2020-10-19 20:25:24,827 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 20:25:24,827 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 20:25:24,828 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 20:25:24,828 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 20:25:24,829 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 08:25:24" (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 [2020-10-19 20:25:24,909 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-19 20:25:24,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-19 20:25:24,909 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 20:25:24,910 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-19 20:25:24,910 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 20:25:24,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 20:25:25,189 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 20:25:25,189 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-19 20:25:25,191 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 08:25:25 BoogieIcfgContainer [2020-10-19 20:25:25,192 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 20:25:25,193 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-19 20:25:25,193 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-19 20:25:25,197 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-19 20:25:25,198 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-19 20:25:25,199 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 19.10 08:25:24" (1/3) ... [2020-10-19 20:25:25,200 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7f0cf280 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.10 08:25:25, skipping insertion in model container [2020-10-19 20:25:25,200 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-19 20:25:25,201 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 08:25:24" (2/3) ... [2020-10-19 20:25:25,201 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7f0cf280 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.10 08:25:25, skipping insertion in model container [2020-10-19 20:25:25,201 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-19 20:25:25,201 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 08:25:25" (3/3) ... [2020-10-19 20:25:25,203 INFO L373 chiAutomizerObserver]: Analyzing ICFG cstrlen-alloca-2.i [2020-10-19 20:25:25,259 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-19 20:25:25,259 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-19 20:25:25,260 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-19 20:25:25,260 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 20:25:25,260 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 20:25:25,261 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-19 20:25:25,261 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 20:25:25,261 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-19 20:25:25,277 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states. [2020-10-19 20:25:25,296 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2020-10-19 20:25:25,297 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 20:25:25,297 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 20:25:25,303 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-10-19 20:25:25,303 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-19 20:25:25,303 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-10-19 20:25:25,303 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states. [2020-10-19 20:25:25,305 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2020-10-19 20:25:25,305 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 20:25:25,305 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 20:25:25,305 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-10-19 20:25:25,306 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-19 20:25:25,312 INFO L794 eck$LassoCheckResult]: Stem: 12#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 11#L-1true havoc main_#res;havoc main_#t~nondet4, main_#t~malloc5.base, main_#t~malloc5.offset, main_#t~nondet7, main_#t~post6, main_~i~0, main_#t~ret8, main_~length1~0, main_~nondetString1~0.base, main_~nondetString1~0.offset;main_~length1~0 := main_#t~nondet4;havoc main_#t~nondet4; 10#L522true assume !(main_~length1~0 < 1); 13#L522-2true call main_#t~malloc5.base, main_#t~malloc5.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc5.base, main_#t~malloc5.offset;main_~i~0 := 0; 5#L527-3true [2020-10-19 20:25:25,313 INFO L796 eck$LassoCheckResult]: Loop: 5#L527-3true assume !!(main_~i~0 < main_~length1~0 - 1);call write~int(main_#t~nondet7, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet7; 4#L527-2true main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 5#L527-3true [2020-10-19 20:25:25,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:25:25,319 INFO L82 PathProgramCache]: Analyzing trace with hash 925669, now seen corresponding path program 1 times [2020-10-19 20:25:25,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 20:25:25,330 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238350767] [2020-10-19 20:25:25,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 20:25:25,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:25:25,431 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:25:25,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:25:25,443 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:25:25,461 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 20:25:25,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:25:25,463 INFO L82 PathProgramCache]: Analyzing trace with hash 1507, now seen corresponding path program 1 times [2020-10-19 20:25:25,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 20:25:25,464 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143062582] [2020-10-19 20:25:25,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 20:25:25,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:25:25,475 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:25:25,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:25:25,482 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:25:25,485 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 20:25:25,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:25:25,487 INFO L82 PathProgramCache]: Analyzing trace with hash 889568455, now seen corresponding path program 1 times [2020-10-19 20:25:25,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 20:25:25,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954235469] [2020-10-19 20:25:25,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 20:25:25,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:25:25,509 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:25:25,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:25:25,525 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:25:25,531 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 20:25:25,706 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-10-19 20:25:25,765 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 20:25:25,766 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 20:25:25,766 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 20:25:25,766 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 20:25:25,767 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-19 20:25:25,767 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:25:25,767 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 20:25:25,767 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 20:25:25,768 INFO L133 ssoRankerPreferences]: Filename of dumped script: cstrlen-alloca-2.i_Iteration1_Lasso [2020-10-19 20:25:25,768 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 20:25:25,768 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 20:25:25,791 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:25:25,800 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:25:25,803 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:25:25,806 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:25:25,811 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:25:25,815 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:25:25,938 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:25:25,943 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:25:25,947 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:25:25,951 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:25:26,202 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 20:25:26,208 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) [2020-10-19 20:25:26,214 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 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:25:26,217 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:25:26,217 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:25:26,218 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:25:26,218 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:25:26,218 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:25:26,221 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:25:26,221 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:25:26,224 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:25:26,255 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 [2020-10-19 20:25:26,257 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:25:26,257 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:25:26,257 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:25:26,257 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:25:26,258 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:25:26,259 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:25:26,259 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:25:26,265 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) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:25:26,300 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 [2020-10-19 20:25:26,302 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:25:26,302 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:25:26,302 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:25:26,303 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:25:26,303 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:25:26,308 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:25:26,309 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:25:26,322 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 [2020-10-19 20:25:26,354 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 [2020-10-19 20:25:26,355 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:25:26,356 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:25:26,356 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:25:26,356 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:25:26,362 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 20:25:26,362 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-19 20:25:26,367 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 [2020-10-19 20:25:26,391 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 20:25:26,393 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:25:26,393 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:25:26,394 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:25:26,394 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:25:26,398 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 20:25:26,398 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-19 20:25:26,403 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 [2020-10-19 20:25:26,436 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 [2020-10-19 20:25:26,438 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:25:26,438 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:25:26,438 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:25:26,439 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:25:26,439 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:25:26,440 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:25:26,440 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:25:26,442 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 [2020-10-19 20:25:26,471 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 [2020-10-19 20:25:26,474 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:25:26,474 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:25:26,474 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:25:26,475 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:25:26,483 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 20:25:26,483 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-19 20:25:26,497 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-19 20:25:26,531 INFO L443 ModelExtractionUtils]: Simplification made 11 calls to the SMT solver. [2020-10-19 20:25:26,531 INFO L444 ModelExtractionUtils]: 8 out of 22 variables were initially zero. Simplification set additionally 11 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 20:25:26,537 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:25:26,543 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-10-19 20:25:26,543 INFO L510 LassoAnalysis]: Proved termination. [2020-10-19 20:25:26,544 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~length1~0, ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~length1~0 - 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2020-10-19 20:25:26,586 INFO L297 tatePredicateManager]: 3 out of 3 supporting invariants were superfluous and have been removed [2020-10-19 20:25:26,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:25:26,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:25:26,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 20:25:26,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 20:25:26,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:25:26,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-19 20:25:26,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 20:25:26,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 20:25:26,707 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 [2020-10-19 20:25:26,708 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 14 states. Second operand 3 states. [2020-10-19 20:25:26,783 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 14 states.. Second operand 3 states. Result 32 states and 42 transitions. Complement of second has 7 states. [2020-10-19 20:25:26,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-10-19 20:25:26,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-19 20:25:26,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 27 transitions. [2020-10-19 20:25:26,790 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 27 transitions. Stem has 4 letters. Loop has 2 letters. [2020-10-19 20:25:26,791 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 20:25:26,791 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 27 transitions. Stem has 6 letters. Loop has 2 letters. [2020-10-19 20:25:26,792 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 20:25:26,792 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 27 transitions. Stem has 4 letters. Loop has 4 letters. [2020-10-19 20:25:26,792 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 20:25:26,793 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 42 transitions. [2020-10-19 20:25:26,800 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-19 20:25:26,804 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 10 states and 13 transitions. [2020-10-19 20:25:26,805 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2020-10-19 20:25:26,806 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2020-10-19 20:25:26,806 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 13 transitions. [2020-10-19 20:25:26,807 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-19 20:25:26,807 INFO L691 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2020-10-19 20:25:26,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 13 transitions. [2020-10-19 20:25:26,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-10-19 20:25:26,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-19 20:25:26,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 13 transitions. [2020-10-19 20:25:26,838 INFO L714 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2020-10-19 20:25:26,838 INFO L594 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2020-10-19 20:25:26,838 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-10-19 20:25:26,838 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 13 transitions. [2020-10-19 20:25:26,840 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-19 20:25:26,841 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 20:25:26,841 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 20:25:26,841 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-10-19 20:25:26,841 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-19 20:25:26,842 INFO L794 eck$LassoCheckResult]: Stem: 107#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 103#L-1 havoc main_#res;havoc main_#t~nondet4, main_#t~malloc5.base, main_#t~malloc5.offset, main_#t~nondet7, main_#t~post6, main_~i~0, main_#t~ret8, main_~length1~0, main_~nondetString1~0.base, main_~nondetString1~0.offset;main_~length1~0 := main_#t~nondet4;havoc main_#t~nondet4; 104#L522 assume !(main_~length1~0 < 1); 108#L522-2 call main_#t~malloc5.base, main_#t~malloc5.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc5.base, main_#t~malloc5.offset;main_~i~0 := 0; 109#L527-3 assume !(main_~i~0 < main_~length1~0 - 1); 112#L527-4 call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1), 1);cstrlen_#in~s.base, cstrlen_#in~s.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset;havoc cstrlen_#res;havoc cstrlen_#t~post3.base, cstrlen_#t~post3.offset, cstrlen_#t~mem2, cstrlen_~s.base, cstrlen_~s.offset, cstrlen_~p~0.base, cstrlen_~p~0.offset;cstrlen_~s.base, cstrlen_~s.offset := cstrlen_#in~s.base, cstrlen_#in~s.offset;cstrlen_~p~0.base, cstrlen_~p~0.offset := cstrlen_~s.base, cstrlen_~s.offset; 106#L516-3 [2020-10-19 20:25:26,842 INFO L796 eck$LassoCheckResult]: Loop: 106#L516-3 call cstrlen_#t~mem2 := read~int(cstrlen_~p~0.base, cstrlen_~p~0.offset, 1); 105#L516-1 assume !!(0 != cstrlen_#t~mem2);havoc cstrlen_#t~mem2;cstrlen_#t~post3.base, cstrlen_#t~post3.offset := cstrlen_~p~0.base, cstrlen_~p~0.offset;cstrlen_~p~0.base, cstrlen_~p~0.offset := cstrlen_#t~post3.base, 1 + cstrlen_#t~post3.offset;havoc cstrlen_#t~post3.base, cstrlen_#t~post3.offset; 106#L516-3 [2020-10-19 20:25:26,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:25:26,843 INFO L82 PathProgramCache]: Analyzing trace with hash 889568397, now seen corresponding path program 1 times [2020-10-19 20:25:26,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 20:25:26,843 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293501032] [2020-10-19 20:25:26,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 20:25:26,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:25:26,882 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:25:26,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:25:26,911 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:25:26,920 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 20:25:26,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:25:26,921 INFO L82 PathProgramCache]: Analyzing trace with hash 1862, now seen corresponding path program 1 times [2020-10-19 20:25:26,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 20:25:26,921 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840486185] [2020-10-19 20:25:26,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 20:25:26,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:25:26,928 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:25:26,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:25:26,931 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:25:26,934 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 20:25:26,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:25:26,934 INFO L82 PathProgramCache]: Analyzing trace with hash 176738514, now seen corresponding path program 1 times [2020-10-19 20:25:26,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 20:25:26,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380818771] [2020-10-19 20:25:26,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 20:25:26,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:25:27,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 20:25:27,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380818771] [2020-10-19 20:25:27,095 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 20:25:27,095 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-19 20:25:27,095 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422923821] [2020-10-19 20:25:27,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 20:25:27,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-19 20:25:27,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-19 20:25:27,138 INFO L87 Difference]: Start difference. First operand 10 states and 13 transitions. cyclomatic complexity: 5 Second operand 7 states. [2020-10-19 20:25:27,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 20:25:27,242 INFO L93 Difference]: Finished difference Result 14 states and 16 transitions. [2020-10-19 20:25:27,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-19 20:25:27,243 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 16 transitions. [2020-10-19 20:25:27,244 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-19 20:25:27,245 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 11 states and 13 transitions. [2020-10-19 20:25:27,245 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2020-10-19 20:25:27,245 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2020-10-19 20:25:27,245 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 13 transitions. [2020-10-19 20:25:27,246 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-19 20:25:27,246 INFO L691 BuchiCegarLoop]: Abstraction has 11 states and 13 transitions. [2020-10-19 20:25:27,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 13 transitions. [2020-10-19 20:25:27,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 10. [2020-10-19 20:25:27,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-19 20:25:27,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2020-10-19 20:25:27,248 INFO L714 BuchiCegarLoop]: Abstraction has 10 states and 12 transitions. [2020-10-19 20:25:27,248 INFO L594 BuchiCegarLoop]: Abstraction has 10 states and 12 transitions. [2020-10-19 20:25:27,248 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-10-19 20:25:27,248 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 12 transitions. [2020-10-19 20:25:27,249 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-19 20:25:27,249 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 20:25:27,249 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 20:25:27,250 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 20:25:27,250 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-19 20:25:27,250 INFO L794 eck$LassoCheckResult]: Stem: 149#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 145#L-1 havoc main_#res;havoc main_#t~nondet4, main_#t~malloc5.base, main_#t~malloc5.offset, main_#t~nondet7, main_#t~post6, main_~i~0, main_#t~ret8, main_~length1~0, main_~nondetString1~0.base, main_~nondetString1~0.offset;main_~length1~0 := main_#t~nondet4;havoc main_#t~nondet4; 146#L522 assume !(main_~length1~0 < 1); 150#L522-2 call main_#t~malloc5.base, main_#t~malloc5.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc5.base, main_#t~malloc5.offset;main_~i~0 := 0; 151#L527-3 assume !!(main_~i~0 < main_~length1~0 - 1);call write~int(main_#t~nondet7, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet7; 152#L527-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 153#L527-3 assume !(main_~i~0 < main_~length1~0 - 1); 154#L527-4 call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1), 1);cstrlen_#in~s.base, cstrlen_#in~s.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset;havoc cstrlen_#res;havoc cstrlen_#t~post3.base, cstrlen_#t~post3.offset, cstrlen_#t~mem2, cstrlen_~s.base, cstrlen_~s.offset, cstrlen_~p~0.base, cstrlen_~p~0.offset;cstrlen_~s.base, cstrlen_~s.offset := cstrlen_#in~s.base, cstrlen_#in~s.offset;cstrlen_~p~0.base, cstrlen_~p~0.offset := cstrlen_~s.base, cstrlen_~s.offset; 148#L516-3 [2020-10-19 20:25:27,250 INFO L796 eck$LassoCheckResult]: Loop: 148#L516-3 call cstrlen_#t~mem2 := read~int(cstrlen_~p~0.base, cstrlen_~p~0.offset, 1); 147#L516-1 assume !!(0 != cstrlen_#t~mem2);havoc cstrlen_#t~mem2;cstrlen_#t~post3.base, cstrlen_#t~post3.offset := cstrlen_~p~0.base, cstrlen_~p~0.offset;cstrlen_~p~0.base, cstrlen_~p~0.offset := cstrlen_#t~post3.base, 1 + cstrlen_#t~post3.offset;havoc cstrlen_#t~post3.base, cstrlen_#t~post3.offset; 148#L516-3 [2020-10-19 20:25:27,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:25:27,251 INFO L82 PathProgramCache]: Analyzing trace with hash 176793839, now seen corresponding path program 1 times [2020-10-19 20:25:27,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 20:25:27,251 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481655519] [2020-10-19 20:25:27,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 20:25:27,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:25:27,264 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:25:27,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:25:27,275 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:25:27,279 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 20:25:27,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:25:27,280 INFO L82 PathProgramCache]: Analyzing trace with hash 1862, now seen corresponding path program 2 times [2020-10-19 20:25:27,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 20:25:27,280 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863533308] [2020-10-19 20:25:27,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 20:25:27,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:25:27,285 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:25:27,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:25:27,287 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:25:27,289 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 20:25:27,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:25:27,290 INFO L82 PathProgramCache]: Analyzing trace with hash -1899811660, now seen corresponding path program 1 times [2020-10-19 20:25:27,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 20:25:27,290 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351093916] [2020-10-19 20:25:27,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 20:25:27,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:25:27,306 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:25:27,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:25:27,320 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:25:27,324 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 20:25:27,562 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 69 [2020-10-19 20:25:27,650 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 20:25:27,651 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 20:25:27,651 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 20:25:27,651 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 20:25:27,651 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-19 20:25:27,651 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:25:27,652 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 20:25:27,652 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 20:25:27,652 INFO L133 ssoRankerPreferences]: Filename of dumped script: cstrlen-alloca-2.i_Iteration3_Lasso [2020-10-19 20:25:27,652 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 20:25:27,652 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 20:25:27,657 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:25:27,660 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:25:27,662 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:25:27,665 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:25:27,667 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:25:27,670 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:25:27,673 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:25:27,676 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:25:27,679 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:25:27,822 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 41 [2020-10-19 20:25:27,868 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:25:27,871 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:25:27,873 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:25:27,876 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:25:27,878 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:25:27,881 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:25:28,191 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 20:25:28,192 INFO L489 LassoAnalysis]: Using template 'affine'. 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 [2020-10-19 20:25:28,197 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 [2020-10-19 20:25:28,198 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:25:28,198 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:25:28,199 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:25:28,199 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:25:28,199 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:25:28,200 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:25:28,200 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:25:28,202 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) [2020-10-19 20:25:28,247 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 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:25:28,249 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:25:28,249 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:25:28,249 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:25:28,249 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:25:28,249 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:25:28,250 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:25:28,250 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:25:28,255 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 20:25:28,295 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 [2020-10-19 20:25:28,296 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:25:28,297 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:25:28,297 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:25:28,297 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:25:28,297 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:25:28,298 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:25:28,298 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:25:28,300 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 [2020-10-19 20:25:28,333 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 [2020-10-19 20:25:28,334 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:25:28,334 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:25:28,334 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:25:28,335 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:25:28,335 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:25:28,335 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:25:28,335 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:25:28,339 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 [2020-10-19 20:25:28,362 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 [2020-10-19 20:25:28,364 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:25:28,364 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:25:28,364 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:25:28,364 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:25:28,366 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 20:25:28,366 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-19 20:25:28,370 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 [2020-10-19 20:25:28,412 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 20:25:28,413 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:25:28,414 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:25:28,414 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:25:28,414 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:25:28,414 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:25:28,415 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:25:28,415 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:25:28,424 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:25:28,453 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 [2020-10-19 20:25:28,454 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:25:28,454 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:25:28,455 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:25:28,455 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:25:28,455 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:25:28,455 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:25:28,455 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:25:28,457 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:25:28,485 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 [2020-10-19 20:25:28,487 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:25:28,487 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:25:28,487 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:25:28,487 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:25:28,489 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 20:25:28,489 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-19 20:25:28,499 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:25:28,526 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 [2020-10-19 20:25:28,528 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:25:28,528 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:25:28,528 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:25:28,528 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:25:28,538 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 20:25:28,538 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-19 20:25:28,548 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:25:28,593 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 20:25:28,598 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:25:28,598 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:25:28,598 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:25:28,598 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:25:28,601 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 20:25:28,602 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-19 20:25:28,608 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:25:28,631 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 [2020-10-19 20:25:28,633 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:25:28,633 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:25:28,633 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:25:28,633 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:25:28,637 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 20:25:28,637 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-19 20:25:28,652 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:25:28,683 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 [2020-10-19 20:25:28,685 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:25:28,685 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:25:28,685 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:25:28,685 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:25:28,693 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 20:25:28,693 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-19 20:25:28,709 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-19 20:25:28,748 INFO L443 ModelExtractionUtils]: Simplification made 13 calls to the SMT solver. [2020-10-19 20:25:28,749 INFO L444 ModelExtractionUtils]: 19 out of 31 variables were initially zero. Simplification set additionally 7 variables to zero. 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) [2020-10-19 20:25:28,752 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:25:28,754 INFO L438 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2020-10-19 20:25:28,755 INFO L510 LassoAnalysis]: Proved termination. [2020-10-19 20:25:28,755 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_cstrlen_~p~0.offset) = -2*ULTIMATE.start_cstrlen_~p~0.offset + 3 Supporting invariants [-1*v_rep(select #length ULTIMATE.start_cstrlen_~p~0.base)_1 + 2 >= 0] [2020-10-19 20:25:28,791 INFO L297 tatePredicateManager]: 3 out of 4 supporting invariants were superfluous and have been removed [2020-10-19 20:25:28,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:25:28,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:25:28,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 14 conjunts are in the unsatisfiable core [2020-10-19 20:25:28,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 20:25:28,896 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-19 20:25:28,896 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 20:25:28,903 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 20:25:28,903 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 20:25:28,904 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:10 [2020-10-19 20:25:28,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:25:28,968 WARN L261 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-19 20:25:28,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 20:25:28,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 20:25:28,992 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 [2020-10-19 20:25:28,993 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states and 12 transitions. cyclomatic complexity: 4 Second operand 6 states. [2020-10-19 20:25:29,131 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states and 12 transitions. cyclomatic complexity: 4. Second operand 6 states. Result 20 states and 24 transitions. Complement of second has 9 states. [2020-10-19 20:25:29,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 4 stem states 1 non-accepting loop states 2 accepting loop states [2020-10-19 20:25:29,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-19 20:25:29,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 17 transitions. [2020-10-19 20:25:29,133 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 17 transitions. Stem has 8 letters. Loop has 2 letters. [2020-10-19 20:25:29,133 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 20:25:29,133 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 17 transitions. Stem has 10 letters. Loop has 2 letters. [2020-10-19 20:25:29,134 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 20:25:29,134 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 17 transitions. Stem has 8 letters. Loop has 4 letters. [2020-10-19 20:25:29,134 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 20:25:29,134 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20 states and 24 transitions. [2020-10-19 20:25:29,136 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-19 20:25:29,137 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20 states to 15 states and 17 transitions. [2020-10-19 20:25:29,137 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2020-10-19 20:25:29,137 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2020-10-19 20:25:29,137 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 17 transitions. [2020-10-19 20:25:29,137 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-19 20:25:29,138 INFO L691 BuchiCegarLoop]: Abstraction has 15 states and 17 transitions. [2020-10-19 20:25:29,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 17 transitions. [2020-10-19 20:25:29,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 12. [2020-10-19 20:25:29,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-10-19 20:25:29,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2020-10-19 20:25:29,140 INFO L714 BuchiCegarLoop]: Abstraction has 12 states and 14 transitions. [2020-10-19 20:25:29,141 INFO L594 BuchiCegarLoop]: Abstraction has 12 states and 14 transitions. [2020-10-19 20:25:29,141 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-10-19 20:25:29,141 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 14 transitions. [2020-10-19 20:25:29,142 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-19 20:25:29,142 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 20:25:29,142 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 20:25:29,143 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1] [2020-10-19 20:25:29,143 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-19 20:25:29,143 INFO L794 eck$LassoCheckResult]: Stem: 266#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 262#L-1 havoc main_#res;havoc main_#t~nondet4, main_#t~malloc5.base, main_#t~malloc5.offset, main_#t~nondet7, main_#t~post6, main_~i~0, main_#t~ret8, main_~length1~0, main_~nondetString1~0.base, main_~nondetString1~0.offset;main_~length1~0 := main_#t~nondet4;havoc main_#t~nondet4; 263#L522 assume !(main_~length1~0 < 1); 267#L522-2 call main_#t~malloc5.base, main_#t~malloc5.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc5.base, main_#t~malloc5.offset;main_~i~0 := 0; 268#L527-3 assume !!(main_~i~0 < main_~length1~0 - 1);call write~int(main_#t~nondet7, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet7; 269#L527-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 270#L527-3 assume !!(main_~i~0 < main_~length1~0 - 1);call write~int(main_#t~nondet7, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet7; 271#L527-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 273#L527-3 assume !(main_~i~0 < main_~length1~0 - 1); 272#L527-4 call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1), 1);cstrlen_#in~s.base, cstrlen_#in~s.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset;havoc cstrlen_#res;havoc cstrlen_#t~post3.base, cstrlen_#t~post3.offset, cstrlen_#t~mem2, cstrlen_~s.base, cstrlen_~s.offset, cstrlen_~p~0.base, cstrlen_~p~0.offset;cstrlen_~s.base, cstrlen_~s.offset := cstrlen_#in~s.base, cstrlen_#in~s.offset;cstrlen_~p~0.base, cstrlen_~p~0.offset := cstrlen_~s.base, cstrlen_~s.offset; 265#L516-3 [2020-10-19 20:25:29,144 INFO L796 eck$LassoCheckResult]: Loop: 265#L516-3 call cstrlen_#t~mem2 := read~int(cstrlen_~p~0.base, cstrlen_~p~0.offset, 1); 264#L516-1 assume !!(0 != cstrlen_#t~mem2);havoc cstrlen_#t~mem2;cstrlen_#t~post3.base, cstrlen_#t~post3.offset := cstrlen_~p~0.base, cstrlen_~p~0.offset;cstrlen_~p~0.base, cstrlen_~p~0.offset := cstrlen_#t~post3.base, 1 + cstrlen_#t~post3.offset;havoc cstrlen_#t~post3.base, cstrlen_#t~post3.offset; 265#L516-3 [2020-10-19 20:25:29,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:25:29,144 INFO L82 PathProgramCache]: Analyzing trace with hash -1899756335, now seen corresponding path program 2 times [2020-10-19 20:25:29,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 20:25:29,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235437059] [2020-10-19 20:25:29,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 20:25:29,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:25:29,159 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:25:29,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:25:29,170 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:25:29,174 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 20:25:29,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:25:29,175 INFO L82 PathProgramCache]: Analyzing trace with hash 1862, now seen corresponding path program 3 times [2020-10-19 20:25:29,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 20:25:29,176 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788150830] [2020-10-19 20:25:29,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 20:25:29,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:25:29,180 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:25:29,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:25:29,183 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:25:29,185 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 20:25:29,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:25:29,186 INFO L82 PathProgramCache]: Analyzing trace with hash -304736234, now seen corresponding path program 2 times [2020-10-19 20:25:29,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 20:25:29,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095212290] [2020-10-19 20:25:29,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 20:25:29,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:25:29,209 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:25:29,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:25:29,241 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:25:29,247 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 20:25:29,568 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 82 [2020-10-19 20:25:29,662 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 20:25:29,662 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 20:25:29,663 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 20:25:29,663 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 20:25:29,663 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-19 20:25:29,663 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:25:29,663 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 20:25:29,663 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 20:25:29,664 INFO L133 ssoRankerPreferences]: Filename of dumped script: cstrlen-alloca-2.i_Iteration4_Lasso [2020-10-19 20:25:29,664 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 20:25:29,664 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 20:25:29,668 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:25:29,681 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:25:29,683 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:25:29,688 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:25:29,690 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:25:29,693 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:25:29,695 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:25:29,698 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:25:29,862 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:25:29,865 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:25:29,868 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:25:29,870 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:25:29,874 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:25:29,878 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:25:29,881 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:25:29,884 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:25:30,278 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 20:25:30,279 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:25:30,286 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 [2020-10-19 20:25:30,287 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:25:30,287 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:25:30,287 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:25:30,287 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:25:30,288 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:25:30,288 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:25:30,288 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:25:30,290 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 [2020-10-19 20:25:30,313 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 [2020-10-19 20:25:30,314 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:25:30,314 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:25:30,314 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:25:30,315 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:25:30,315 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:25:30,315 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:25:30,315 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:25:30,317 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:25:30,340 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 [2020-10-19 20:25:30,342 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:25:30,342 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:25:30,342 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:25:30,343 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:25:30,344 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 20:25:30,344 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-19 20:25:30,348 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 [2020-10-19 20:25:30,383 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 20:25:30,384 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:25:30,385 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:25:30,385 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:25:30,385 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:25:30,387 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 20:25:30,387 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-19 20:25:30,391 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) [2020-10-19 20:25:30,413 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 20:25:30,415 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:25:30,415 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:25:30,415 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:25:30,415 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:25:30,415 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:25:30,416 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:25:30,416 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 [2020-10-19 20:25:30,418 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 [2020-10-19 20:25:30,461 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 [2020-10-19 20:25:30,463 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:25:30,463 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:25:30,463 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:25:30,463 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:25:30,463 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:25:30,464 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:25:30,464 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:25:30,466 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 [2020-10-19 20:25:30,496 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 20:25:30,498 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:25:30,498 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:25:30,498 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:25:30,498 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:25:30,500 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 20:25:30,500 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-19 20:25:30,505 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) [2020-10-19 20:25:30,539 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 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:25:30,541 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:25:30,542 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:25:30,542 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:25:30,542 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:25:30,546 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 20:25:30,546 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-19 20:25:30,556 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) [2020-10-19 20:25:30,597 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 [2020-10-19 20:25:30,599 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:25:30,599 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:25:30,599 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:25:30,599 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:25:30,606 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 20:25:30,607 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:25:30,622 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-19 20:25:30,685 INFO L443 ModelExtractionUtils]: Simplification made 26 calls to the SMT solver. [2020-10-19 20:25:30,685 INFO L444 ModelExtractionUtils]: 6 out of 31 variables were initially zero. Simplification set additionally 22 variables to zero. 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) [2020-10-19 20:25:30,692 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:25:30,697 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-10-19 20:25:30,697 INFO L510 LassoAnalysis]: Proved termination. [2020-10-19 20:25:30,697 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_cstrlen_~p~0.offset, v_rep(select #length ULTIMATE.start_main_~nondetString1~0.base)_2) = -1*ULTIMATE.start_cstrlen_~p~0.offset + 1*v_rep(select #length ULTIMATE.start_main_~nondetString1~0.base)_2 Supporting invariants [] [2020-10-19 20:25:30,731 INFO L297 tatePredicateManager]: 3 out of 5 supporting invariants were superfluous and have been removed [2020-10-19 20:25:30,736 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-10-19 20:25:30,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:25:30,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:25:30,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-19 20:25:30,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 20:25:30,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:25:30,808 WARN L261 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-19 20:25:30,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 20:25:30,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 20:25:30,825 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 [2020-10-19 20:25:30,825 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 14 transitions. cyclomatic complexity: 4 Second operand 4 states. [2020-10-19 20:25:30,862 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 14 transitions. cyclomatic complexity: 4. Second operand 4 states. Result 14 states and 17 transitions. Complement of second has 5 states. [2020-10-19 20:25:30,863 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 [2020-10-19 20:25:30,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-19 20:25:30,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2020-10-19 20:25:30,864 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 10 letters. Loop has 2 letters. [2020-10-19 20:25:30,864 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 20:25:30,864 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 12 letters. Loop has 2 letters. [2020-10-19 20:25:30,864 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 20:25:30,864 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 10 letters. Loop has 4 letters. [2020-10-19 20:25:30,865 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 20:25:30,865 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 17 transitions. [2020-10-19 20:25:30,866 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-19 20:25:30,866 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 0 states and 0 transitions. [2020-10-19 20:25:30,866 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-10-19 20:25:30,866 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-10-19 20:25:30,866 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-10-19 20:25:30,866 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-19 20:25:30,866 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 20:25:30,867 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 20:25:30,867 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 20:25:30,867 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-10-19 20:25:30,867 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-10-19 20:25:30,867 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-19 20:25:30,867 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-10-19 20:25:30,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 19.10 08:25:30 BoogieIcfgContainer [2020-10-19 20:25:30,874 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-10-19 20:25:30,874 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 20:25:30,874 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 20:25:30,874 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 20:25:30,875 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 08:25:25" (3/4) ... [2020-10-19 20:25:30,878 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-19 20:25:30,878 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 20:25:30,879 INFO L168 Benchmark]: Toolchain (without parser) took 6773.11 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 312.5 MB). Free memory was 958.6 MB in the beginning and 1.2 GB in the end (delta: -284.4 MB). Peak memory consumption was 28.0 MB. Max. memory is 11.5 GB. [2020-10-19 20:25:30,880 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 20:25:30,881 INFO L168 Benchmark]: CACSL2BoogieTranslator took 630.50 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 953.2 MB in the beginning and 1.1 GB in the end (delta: -172.0 MB). Peak memory consumption was 20.9 MB. Max. memory is 11.5 GB. [2020-10-19 20:25:30,881 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.18 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 13.1 MB). Peak memory consumption was 13.1 MB. Max. memory is 11.5 GB. [2020-10-19 20:25:30,882 INFO L168 Benchmark]: Boogie Preprocessor took 31.29 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 20:25:30,882 INFO L168 Benchmark]: RCFGBuilder took 364.58 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.4 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. [2020-10-19 20:25:30,883 INFO L168 Benchmark]: BuchiAutomizer took 5681.18 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 169.9 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -149.4 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. [2020-10-19 20:25:30,884 INFO L168 Benchmark]: Witness Printer took 3.82 ms. Allocated memory is still 1.3 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 24 B). Peak memory consumption was 24 B. Max. memory is 11.5 GB. [2020-10-19 20:25:30,888 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 630.50 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 953.2 MB in the beginning and 1.1 GB in the end (delta: -172.0 MB). Peak memory consumption was 20.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 49.18 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 13.1 MB). Peak memory consumption was 13.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 31.29 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 364.58 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.4 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 5681.18 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 169.9 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -149.4 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. * Witness Printer took 3.82 ms. Allocated memory is still 1.3 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 24 B). Peak memory consumption was 24 B. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #length * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (1 trivial, 3 deterministic, 0 nondeterministic). One deterministic module has affine ranking function length1 + -1 * i and consists of 5 locations. One deterministic module has affine ranking function -2 * p + 3 and consists of 7 locations. One deterministic module has affine ranking function -1 * p + unknown-#length-unknown[nondetString1] and consists of 4 locations. 1 modules have a trivial ranking function, the largest among these consists of 7 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 5.6s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 4.7s. Construction of modules took 0.1s. Büchi inclusion checks took 0.6s. Highest rank in rank-based complementation 3. Minimization of det autom 4. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 12 states and ocurred in iteration 3. Nontrivial modules had stage [3, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 29 SDtfs, 54 SDslu, 35 SDs, 0 SdLazy, 72 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc1 concLT0 SILN0 SILU0 SILI0 SILT0 lasso3 LassoPreprocessingBenchmarks: Lassos: inital119 mio100 ax115 hnf98 lsp81 ukn84 mio100 lsp56 div100 bol100 ite100 ukn100 eq176 hnf89 smp97 dnf100 smp100 tf100 neg100 sie102 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 16ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...