./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/array-memsafety/cstrchr-alloca-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version f470102c 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/cstrchr-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 276936ba1494f32a328b3de86f664a380d5263e9 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-11-28 21:25:19,140 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 21:25:19,143 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 21:25:19,162 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 21:25:19,162 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 21:25:19,164 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 21:25:19,166 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 21:25:19,176 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 21:25:19,181 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 21:25:19,184 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 21:25:19,185 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 21:25:19,187 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 21:25:19,188 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 21:25:19,190 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 21:25:19,192 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 21:25:19,193 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 21:25:19,195 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 21:25:19,196 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 21:25:19,198 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 21:25:19,202 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 21:25:19,206 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 21:25:19,210 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 21:25:19,211 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 21:25:19,213 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 21:25:19,218 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 21:25:19,218 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 21:25:19,218 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 21:25:19,220 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 21:25:19,220 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 21:25:19,221 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 21:25:19,222 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 21:25:19,222 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 21:25:19,223 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 21:25:19,224 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 21:25:19,225 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 21:25:19,226 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 21:25:19,227 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 21:25:19,227 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 21:25:19,227 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 21:25:19,228 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 21:25:19,229 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 21:25:19,230 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2019-11-28 21:25:19,269 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 21:25:19,271 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 21:25:19,272 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 21:25:19,274 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 21:25:19,274 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 21:25:19,274 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-28 21:25:19,275 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-28 21:25:19,276 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-28 21:25:19,276 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-28 21:25:19,276 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-28 21:25:19,276 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-28 21:25:19,276 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 21:25:19,277 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 21:25:19,277 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-28 21:25:19,277 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 21:25:19,277 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 21:25:19,277 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 21:25:19,278 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-28 21:25:19,279 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-28 21:25:19,279 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-28 21:25:19,279 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 21:25:19,280 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 21:25:19,280 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-28 21:25:19,280 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 21:25:19,281 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-28 21:25:19,281 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 21:25:19,281 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 21:25:19,282 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-28 21:25:19,282 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 21:25:19,283 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 21:25:19,283 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 21:25:19,284 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-28 21:25:19,285 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-28 21:25:19,285 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 -> 276936ba1494f32a328b3de86f664a380d5263e9 [2019-11-28 21:25:19,626 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 21:25:19,648 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 21:25:19,651 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 21:25:19,653 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 21:25:19,654 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 21:25:19,655 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/cstrchr-alloca-2.i [2019-11-28 21:25:19,713 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9ae08ce2/d9d2e46208434f778819a3dc90ce718b/FLAG995b82709 [2019-11-28 21:25:20,204 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 21:25:20,205 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/cstrchr-alloca-2.i [2019-11-28 21:25:20,228 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9ae08ce2/d9d2e46208434f778819a3dc90ce718b/FLAG995b82709 [2019-11-28 21:25:20,538 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9ae08ce2/d9d2e46208434f778819a3dc90ce718b [2019-11-28 21:25:20,542 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 21:25:20,543 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 21:25:20,544 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 21:25:20,545 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 21:25:20,548 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 21:25:20,549 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 09:25:20" (1/1) ... [2019-11-28 21:25:20,552 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@170cd080 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 09:25:20, skipping insertion in model container [2019-11-28 21:25:20,552 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 09:25:20" (1/1) ... [2019-11-28 21:25:20,560 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 21:25:20,604 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 21:25:21,072 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 21:25:21,085 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 21:25:21,151 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 21:25:21,220 INFO L208 MainTranslator]: Completed translation [2019-11-28 21:25:21,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 09:25:21 WrapperNode [2019-11-28 21:25:21,223 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 21:25:21,224 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 21:25:21,224 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 21:25:21,224 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 21:25:21,232 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 09:25:21" (1/1) ... [2019-11-28 21:25:21,247 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 09:25:21" (1/1) ... [2019-11-28 21:25:21,269 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 21:25:21,269 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 21:25:21,269 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 21:25:21,270 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 21:25:21,277 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 09:25:21" (1/1) ... [2019-11-28 21:25:21,277 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 09:25:21" (1/1) ... [2019-11-28 21:25:21,280 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 09:25:21" (1/1) ... [2019-11-28 21:25:21,281 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 09:25:21" (1/1) ... [2019-11-28 21:25:21,287 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 09:25:21" (1/1) ... [2019-11-28 21:25:21,291 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 09:25:21" (1/1) ... [2019-11-28 21:25:21,293 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 09:25:21" (1/1) ... [2019-11-28 21:25:21,299 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 21:25:21,299 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 21:25:21,300 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 21:25:21,300 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 21:25:21,301 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 09:25:21" (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 [2019-11-28 21:25:21,367 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-28 21:25:21,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-28 21:25:21,367 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-28 21:25:21,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 21:25:21,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 21:25:21,368 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 21:25:21,691 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 21:25:21,691 INFO L287 CfgBuilder]: Removed 8 assume(true) statements. [2019-11-28 21:25:21,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 09:25:21 BoogieIcfgContainer [2019-11-28 21:25:21,692 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 21:25:21,693 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-28 21:25:21,693 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-28 21:25:21,696 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-28 21:25:21,697 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 21:25:21,697 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 09:25:20" (1/3) ... [2019-11-28 21:25:21,698 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@34fa62bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 09:25:21, skipping insertion in model container [2019-11-28 21:25:21,699 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 21:25:21,699 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 09:25:21" (2/3) ... [2019-11-28 21:25:21,699 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@34fa62bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 09:25:21, skipping insertion in model container [2019-11-28 21:25:21,699 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 21:25:21,699 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 09:25:21" (3/3) ... [2019-11-28 21:25:21,701 INFO L371 chiAutomizerObserver]: Analyzing ICFG cstrchr-alloca-2.i [2019-11-28 21:25:21,742 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-28 21:25:21,743 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-28 21:25:21,743 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-28 21:25:21,743 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 21:25:21,743 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 21:25:21,743 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-28 21:25:21,744 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 21:25:21,744 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-28 21:25:21,755 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states. [2019-11-28 21:25:21,776 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 5 [2019-11-28 21:25:21,777 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 21:25:21,777 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 21:25:21,783 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-11-28 21:25:21,783 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-28 21:25:21,783 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-28 21:25:21,783 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states. [2019-11-28 21:25:21,785 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 5 [2019-11-28 21:25:21,785 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 21:25:21,785 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 21:25:21,786 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-11-28 21:25:21,786 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-28 21:25:21,792 INFO L794 eck$LassoCheckResult]: Stem: 15#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 13#L-1true havoc main_#res;havoc main_#t~nondet8, main_#t~malloc9.base, main_#t~malloc9.offset, main_#t~nondet11, main_#t~post10, main_~i~0, main_#t~nondet12, main_#t~ret13.base, main_#t~ret13.offset, main_~length~0, main_~nondetString~0.base, main_~nondetString~0.offset;main_~length~0 := main_#t~nondet8;havoc main_#t~nondet8; 11#L522true assume !(main_~length~0 < 1); 16#L522-2true call main_#t~malloc9.base, main_#t~malloc9.offset := #Ultimate.allocOnStack(main_~length~0);main_~nondetString~0.base, main_~nondetString~0.offset := main_#t~malloc9.base, main_#t~malloc9.offset;main_~i~0 := 0; 7#L527-3true [2019-11-28 21:25:21,792 INFO L796 eck$LassoCheckResult]: Loop: 7#L527-3true assume !!(main_~i~0 < main_~length~0 - 1);call write~int(main_#t~nondet11, main_~nondetString~0.base, main_~nondetString~0.offset + main_~i~0, 1);havoc main_#t~nondet11; 6#L527-2true main_#t~post10 := main_~i~0;main_~i~0 := 1 + main_#t~post10;havoc main_#t~post10; 7#L527-3true [2019-11-28 21:25:21,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 21:25:21,798 INFO L82 PathProgramCache]: Analyzing trace with hash 925669, now seen corresponding path program 1 times [2019-11-28 21:25:21,805 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 21:25:21,805 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293572218] [2019-11-28 21:25:21,806 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 21:25:21,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 21:25:21,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 21:25:21,940 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 21:25:21,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 21:25:21,942 INFO L82 PathProgramCache]: Analyzing trace with hash 1507, now seen corresponding path program 1 times [2019-11-28 21:25:21,942 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 21:25:21,943 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318142007] [2019-11-28 21:25:21,943 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 21:25:21,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 21:25:21,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 21:25:21,965 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 21:25:21,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 21:25:21,971 INFO L82 PathProgramCache]: Analyzing trace with hash 889568455, now seen corresponding path program 1 times [2019-11-28 21:25:21,972 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 21:25:21,972 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148657576] [2019-11-28 21:25:21,973 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 21:25:22,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 21:25:22,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 21:25:22,063 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 21:25:22,293 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2019-11-28 21:25:22,356 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 21:25:22,358 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 21:25:22,358 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 21:25:22,358 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 21:25:22,359 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 21:25:22,359 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 21:25:22,360 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 21:25:22,361 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 21:25:22,361 INFO L133 ssoRankerPreferences]: Filename of dumped script: cstrchr-alloca-2.i_Iteration1_Lasso [2019-11-28 21:25:22,362 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 21:25:22,363 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 21:25:22,401 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 21:25:22,408 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 21:25:22,413 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 21:25:22,416 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 21:25:22,422 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 21:25:22,426 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 21:25:22,431 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 21:25:22,436 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 21:25:22,441 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 21:25:22,445 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 21:25:22,451 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 21:25:22,457 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 21:25:22,908 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 21:25:22,913 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 21:25:22,919 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 [2019-11-28 21:25:22,921 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 21:25:22,922 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 21:25:22,923 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 21:25:22,923 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 21:25:22,924 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 21:25:22,927 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 21:25:22,927 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 21:25:22,930 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 [2019-11-28 21:25:22,958 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 [2019-11-28 21:25:22,960 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 21:25:22,961 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 21:25:22,961 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 21:25:22,961 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 21:25:22,962 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 21:25:22,963 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 21:25:22,963 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 21:25:22,965 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2019-11-28 21:25:22,986 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 [2019-11-28 21:25:22,988 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 21:25:22,988 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 21:25:22,989 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 21:25:22,989 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 21:25:22,989 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 21:25:22,994 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 21:25:22,994 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 21:25:22,998 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 21:25:23,005 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 [2019-11-28 21:25:23,007 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 21:25:23,007 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 21:25:23,007 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 21:25:23,008 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 21:25:23,013 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 21:25:23,013 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 21:25:23,019 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) [2019-11-28 21:25:23,033 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 [2019-11-28 21:25:23,034 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 21:25:23,035 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 21:25:23,035 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 21:25:23,035 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 21:25:23,041 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 21:25:23,041 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 21:25:23,047 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) [2019-11-28 21:25:23,061 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 [2019-11-28 21:25:23,062 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 21:25:23,063 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 21:25:23,063 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 21:25:23,063 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 21:25:23,063 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 21:25:23,064 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 21:25:23,064 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 21:25:23,067 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) [2019-11-28 21:25:23,081 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 21:25:23,082 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 21:25:23,083 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 21:25:23,083 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 21:25:23,083 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 21:25:23,083 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 21:25:23,084 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 21:25:23,084 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 21:25:23,086 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 21:25:23,093 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 [2019-11-28 21:25:23,094 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 21:25:23,094 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 21:25:23,095 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 21:25:23,095 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 21:25:23,095 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 21:25:23,096 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 21:25:23,096 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 21:25:23,098 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 21:25:23,106 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 [2019-11-28 21:25:23,108 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 21:25:23,109 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 21:25:23,109 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 21:25:23,109 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 21:25:23,113 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 21:25:23,113 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-28 21:25:23,119 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) [2019-11-28 21:25:23,131 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 [2019-11-28 21:25:23,132 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 21:25:23,133 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 21:25:23,133 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 21:25:23,133 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 21:25:23,136 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 21:25:23,136 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 21:25:23,143 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) [2019-11-28 21:25:23,163 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 21:25:23,165 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 21:25:23,166 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 21:25:23,166 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 21:25:23,166 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 21:25:23,169 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 21:25:23,169 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-28 21:25:23,174 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 [2019-11-28 21:25:23,185 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 [2019-11-28 21:25:23,187 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 21:25:23,188 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 21:25:23,188 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 21:25:23,188 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 21:25:23,193 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 21:25:23,193 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-28 21:25:23,201 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 [2019-11-28 21:25:23,212 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 21:25:23,214 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 21:25:23,214 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 21:25:23,215 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 21:25:23,215 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 21:25:23,215 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 21:25:23,215 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 21:25:23,216 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 21:25:23,217 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 [2019-11-28 21:25:23,228 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 [2019-11-28 21:25:23,234 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 21:25:23,234 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 21:25:23,234 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 21:25:23,234 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 21:25:23,246 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 21:25:23,247 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-28 21:25:23,262 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 21:25:23,350 INFO L443 ModelExtractionUtils]: Simplification made 12 calls to the SMT solver. [2019-11-28 21:25:23,351 INFO L444 ModelExtractionUtils]: 8 out of 22 variables were initially zero. Simplification set additionally 10 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 21:25:23,368 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 21:25:23,372 INFO L438 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2019-11-28 21:25:23,373 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 21:25:23,374 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0, v_rep(select #length ULTIMATE.start_main_~nondetString~0.base)_1) = -1*ULTIMATE.start_main_~i~0 + 1*v_rep(select #length ULTIMATE.start_main_~nondetString~0.base)_1 Supporting invariants [1*ULTIMATE.start_main_~nondetString~0.offset >= 0] [2019-11-28 21:25:23,399 INFO L297 tatePredicateManager]: 3 out of 4 supporting invariants were superfluous and have been removed [2019-11-28 21:25:23,414 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2019-11-28 21:25:23,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 21:25:23,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 21:25:23,484 INFO L264 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 21:25:23,486 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 21:25:23,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 21:25:23,504 INFO L264 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-28 21:25:23,505 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 21:25:23,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 21:25:23,548 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 [2019-11-28 21:25:23,550 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states. Second operand 3 states. [2019-11-28 21:25:23,678 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states.. Second operand 3 states. Result 41 states and 57 transitions. Complement of second has 7 states. [2019-11-28 21:25:23,679 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-28 21:25:23,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-28 21:25:23,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 37 transitions. [2019-11-28 21:25:23,685 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 37 transitions. Stem has 4 letters. Loop has 2 letters. [2019-11-28 21:25:23,687 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 21:25:23,687 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 37 transitions. Stem has 6 letters. Loop has 2 letters. [2019-11-28 21:25:23,688 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 21:25:23,688 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 37 transitions. Stem has 4 letters. Loop has 4 letters. [2019-11-28 21:25:23,688 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 21:25:23,689 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 41 states and 57 transitions. [2019-11-28 21:25:23,698 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-28 21:25:23,705 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 41 states to 11 states and 15 transitions. [2019-11-28 21:25:23,706 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2019-11-28 21:25:23,706 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2019-11-28 21:25:23,707 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 15 transitions. [2019-11-28 21:25:23,708 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-28 21:25:23,708 INFO L688 BuchiCegarLoop]: Abstraction has 11 states and 15 transitions. [2019-11-28 21:25:23,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 15 transitions. [2019-11-28 21:25:23,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2019-11-28 21:25:23,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-11-28 21:25:23,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 15 transitions. [2019-11-28 21:25:23,738 INFO L711 BuchiCegarLoop]: Abstraction has 11 states and 15 transitions. [2019-11-28 21:25:23,738 INFO L591 BuchiCegarLoop]: Abstraction has 11 states and 15 transitions. [2019-11-28 21:25:23,739 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-28 21:25:23,739 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 15 transitions. [2019-11-28 21:25:23,740 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-28 21:25:23,740 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 21:25:23,740 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 21:25:23,748 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2019-11-28 21:25:23,748 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-28 21:25:23,749 INFO L794 eck$LassoCheckResult]: Stem: 128#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 124#L-1 havoc main_#res;havoc main_#t~nondet8, main_#t~malloc9.base, main_#t~malloc9.offset, main_#t~nondet11, main_#t~post10, main_~i~0, main_#t~nondet12, main_#t~ret13.base, main_#t~ret13.offset, main_~length~0, main_~nondetString~0.base, main_~nondetString~0.offset;main_~length~0 := main_#t~nondet8;havoc main_#t~nondet8; 125#L522 assume !(main_~length~0 < 1); 129#L522-2 call main_#t~malloc9.base, main_#t~malloc9.offset := #Ultimate.allocOnStack(main_~length~0);main_~nondetString~0.base, main_~nondetString~0.offset := main_#t~malloc9.base, main_#t~malloc9.offset;main_~i~0 := 0; 130#L527-3 assume !(main_~i~0 < main_~length~0 - 1); 133#L527-4 call write~int(0, main_~nondetString~0.base, main_~nondetString~0.offset + (main_~length~0 - 1), 1);cstrchr_#in~s.base, cstrchr_#in~s.offset, cstrchr_#in~c := main_~nondetString~0.base, main_~nondetString~0.offset, main_#t~nondet12;havoc cstrchr_#res.base, cstrchr_#res.offset;havoc cstrchr_#t~post5.base, cstrchr_#t~post5.offset, cstrchr_#t~mem2, cstrchr_#t~mem3, cstrchr_#t~short4, cstrchr_#t~mem6, cstrchr_#t~ite7.base, cstrchr_#t~ite7.offset, cstrchr_~s.base, cstrchr_~s.offset, cstrchr_~c;cstrchr_~s.base, cstrchr_~s.offset := cstrchr_#in~s.base, cstrchr_#in~s.offset;cstrchr_~c := cstrchr_#in~c; 134#L516-5 [2019-11-28 21:25:23,750 INFO L796 eck$LassoCheckResult]: Loop: 134#L516-5 call cstrchr_#t~mem2 := read~int(cstrchr_~s.base, cstrchr_~s.offset, 1);cstrchr_#t~short4 := 0 != cstrchr_#t~mem2; 126#L516-1 assume !cstrchr_#t~short4; 127#L516-3 assume !!cstrchr_#t~short4;havoc cstrchr_#t~short4;havoc cstrchr_#t~mem3;havoc cstrchr_#t~mem2;cstrchr_#t~post5.base, cstrchr_#t~post5.offset := cstrchr_~s.base, cstrchr_~s.offset;cstrchr_~s.base, cstrchr_~s.offset := cstrchr_#t~post5.base, 1 + cstrchr_#t~post5.offset;havoc cstrchr_#t~post5.base, cstrchr_#t~post5.offset; 134#L516-5 [2019-11-28 21:25:23,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 21:25:23,750 INFO L82 PathProgramCache]: Analyzing trace with hash 889568397, now seen corresponding path program 1 times [2019-11-28 21:25:23,751 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 21:25:23,752 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108153624] [2019-11-28 21:25:23,752 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 21:25:23,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 21:25:23,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 21:25:23,819 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 21:25:23,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 21:25:23,822 INFO L82 PathProgramCache]: Analyzing trace with hash 57761, now seen corresponding path program 1 times [2019-11-28 21:25:23,823 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 21:25:23,823 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507773821] [2019-11-28 21:25:23,823 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 21:25:23,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 21:25:23,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 21:25:23,880 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507773821] [2019-11-28 21:25:23,881 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 21:25:23,881 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 21:25:23,882 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135730932] [2019-11-28 21:25:23,885 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-11-28 21:25:23,885 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 21:25:23,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 21:25:23,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 21:25:23,890 INFO L87 Difference]: Start difference. First operand 11 states and 15 transitions. cyclomatic complexity: 6 Second operand 3 states. [2019-11-28 21:25:23,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 21:25:23,909 INFO L93 Difference]: Finished difference Result 12 states and 15 transitions. [2019-11-28 21:25:23,910 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 21:25:23,910 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 15 transitions. [2019-11-28 21:25:23,911 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-28 21:25:23,911 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 11 states and 14 transitions. [2019-11-28 21:25:23,912 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2019-11-28 21:25:23,912 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2019-11-28 21:25:23,912 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 14 transitions. [2019-11-28 21:25:23,912 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-28 21:25:23,912 INFO L688 BuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2019-11-28 21:25:23,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 14 transitions. [2019-11-28 21:25:23,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2019-11-28 21:25:23,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-11-28 21:25:23,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 14 transitions. [2019-11-28 21:25:23,914 INFO L711 BuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2019-11-28 21:25:23,914 INFO L591 BuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2019-11-28 21:25:23,914 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-28 21:25:23,914 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 14 transitions. [2019-11-28 21:25:23,915 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-28 21:25:23,915 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 21:25:23,915 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 21:25:23,915 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2019-11-28 21:25:23,916 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-28 21:25:23,916 INFO L794 eck$LassoCheckResult]: Stem: 157#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 153#L-1 havoc main_#res;havoc main_#t~nondet8, main_#t~malloc9.base, main_#t~malloc9.offset, main_#t~nondet11, main_#t~post10, main_~i~0, main_#t~nondet12, main_#t~ret13.base, main_#t~ret13.offset, main_~length~0, main_~nondetString~0.base, main_~nondetString~0.offset;main_~length~0 := main_#t~nondet8;havoc main_#t~nondet8; 154#L522 assume !(main_~length~0 < 1); 158#L522-2 call main_#t~malloc9.base, main_#t~malloc9.offset := #Ultimate.allocOnStack(main_~length~0);main_~nondetString~0.base, main_~nondetString~0.offset := main_#t~malloc9.base, main_#t~malloc9.offset;main_~i~0 := 0; 159#L527-3 assume !(main_~i~0 < main_~length~0 - 1); 162#L527-4 call write~int(0, main_~nondetString~0.base, main_~nondetString~0.offset + (main_~length~0 - 1), 1);cstrchr_#in~s.base, cstrchr_#in~s.offset, cstrchr_#in~c := main_~nondetString~0.base, main_~nondetString~0.offset, main_#t~nondet12;havoc cstrchr_#res.base, cstrchr_#res.offset;havoc cstrchr_#t~post5.base, cstrchr_#t~post5.offset, cstrchr_#t~mem2, cstrchr_#t~mem3, cstrchr_#t~short4, cstrchr_#t~mem6, cstrchr_#t~ite7.base, cstrchr_#t~ite7.offset, cstrchr_~s.base, cstrchr_~s.offset, cstrchr_~c;cstrchr_~s.base, cstrchr_~s.offset := cstrchr_#in~s.base, cstrchr_#in~s.offset;cstrchr_~c := cstrchr_#in~c; 163#L516-5 [2019-11-28 21:25:23,916 INFO L796 eck$LassoCheckResult]: Loop: 163#L516-5 call cstrchr_#t~mem2 := read~int(cstrchr_~s.base, cstrchr_~s.offset, 1);cstrchr_#t~short4 := 0 != cstrchr_#t~mem2; 155#L516-1 assume cstrchr_#t~short4;call cstrchr_#t~mem3 := read~int(cstrchr_~s.base, cstrchr_~s.offset, 1);cstrchr_#t~short4 := cstrchr_#t~mem3 != (if cstrchr_~c % 256 <= 127 then cstrchr_~c % 256 else cstrchr_~c % 256 - 256); 156#L516-3 assume !!cstrchr_#t~short4;havoc cstrchr_#t~short4;havoc cstrchr_#t~mem3;havoc cstrchr_#t~mem2;cstrchr_#t~post5.base, cstrchr_#t~post5.offset := cstrchr_~s.base, cstrchr_~s.offset;cstrchr_~s.base, cstrchr_~s.offset := cstrchr_#t~post5.base, 1 + cstrchr_#t~post5.offset;havoc cstrchr_#t~post5.base, cstrchr_#t~post5.offset; 163#L516-5 [2019-11-28 21:25:23,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 21:25:23,916 INFO L82 PathProgramCache]: Analyzing trace with hash 889568397, now seen corresponding path program 2 times [2019-11-28 21:25:23,917 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 21:25:23,917 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053778751] [2019-11-28 21:25:23,917 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 21:25:23,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 21:25:23,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 21:25:23,939 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 21:25:23,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 21:25:23,940 INFO L82 PathProgramCache]: Analyzing trace with hash 57699, now seen corresponding path program 1 times [2019-11-28 21:25:23,940 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 21:25:23,940 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758898813] [2019-11-28 21:25:23,941 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 21:25:23,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 21:25:23,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 21:25:23,959 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 21:25:23,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 21:25:23,960 INFO L82 PathProgramCache]: Analyzing trace with hash 1183926615, now seen corresponding path program 1 times [2019-11-28 21:25:23,960 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 21:25:23,960 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244846672] [2019-11-28 21:25:23,960 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 21:25:23,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 21:25:24,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 21:25:24,151 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244846672] [2019-11-28 21:25:24,151 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 21:25:24,152 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-28 21:25:24,152 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149771962] [2019-11-28 21:25:24,398 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 35 [2019-11-28 21:25:24,401 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 21:25:24,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-28 21:25:24,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-11-28 21:25:24,402 INFO L87 Difference]: Start difference. First operand 11 states and 14 transitions. cyclomatic complexity: 5 Second operand 7 states. [2019-11-28 21:25:24,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 21:25:24,495 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2019-11-28 21:25:24,496 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-28 21:25:24,496 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 17 transitions. [2019-11-28 21:25:24,497 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-28 21:25:24,497 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 12 states and 14 transitions. [2019-11-28 21:25:24,497 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2019-11-28 21:25:24,499 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2019-11-28 21:25:24,499 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 14 transitions. [2019-11-28 21:25:24,499 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-28 21:25:24,499 INFO L688 BuchiCegarLoop]: Abstraction has 12 states and 14 transitions. [2019-11-28 21:25:24,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 14 transitions. [2019-11-28 21:25:24,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2019-11-28 21:25:24,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-11-28 21:25:24,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2019-11-28 21:25:24,501 INFO L711 BuchiCegarLoop]: Abstraction has 11 states and 13 transitions. [2019-11-28 21:25:24,501 INFO L591 BuchiCegarLoop]: Abstraction has 11 states and 13 transitions. [2019-11-28 21:25:24,502 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-28 21:25:24,502 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 13 transitions. [2019-11-28 21:25:24,502 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-28 21:25:24,502 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 21:25:24,503 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 21:25:24,504 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 21:25:24,505 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-28 21:25:24,505 INFO L794 eck$LassoCheckResult]: Stem: 197#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 195#L-1 havoc main_#res;havoc main_#t~nondet8, main_#t~malloc9.base, main_#t~malloc9.offset, main_#t~nondet11, main_#t~post10, main_~i~0, main_#t~nondet12, main_#t~ret13.base, main_#t~ret13.offset, main_~length~0, main_~nondetString~0.base, main_~nondetString~0.offset;main_~length~0 := main_#t~nondet8;havoc main_#t~nondet8; 196#L522 assume !(main_~length~0 < 1); 200#L522-2 call main_#t~malloc9.base, main_#t~malloc9.offset := #Ultimate.allocOnStack(main_~length~0);main_~nondetString~0.base, main_~nondetString~0.offset := main_#t~malloc9.base, main_#t~malloc9.offset;main_~i~0 := 0; 201#L527-3 assume !!(main_~i~0 < main_~length~0 - 1);call write~int(main_#t~nondet11, main_~nondetString~0.base, main_~nondetString~0.offset + main_~i~0, 1);havoc main_#t~nondet11; 202#L527-2 main_#t~post10 := main_~i~0;main_~i~0 := 1 + main_#t~post10;havoc main_#t~post10; 203#L527-3 assume !(main_~i~0 < main_~length~0 - 1); 204#L527-4 call write~int(0, main_~nondetString~0.base, main_~nondetString~0.offset + (main_~length~0 - 1), 1);cstrchr_#in~s.base, cstrchr_#in~s.offset, cstrchr_#in~c := main_~nondetString~0.base, main_~nondetString~0.offset, main_#t~nondet12;havoc cstrchr_#res.base, cstrchr_#res.offset;havoc cstrchr_#t~post5.base, cstrchr_#t~post5.offset, cstrchr_#t~mem2, cstrchr_#t~mem3, cstrchr_#t~short4, cstrchr_#t~mem6, cstrchr_#t~ite7.base, cstrchr_#t~ite7.offset, cstrchr_~s.base, cstrchr_~s.offset, cstrchr_~c;cstrchr_~s.base, cstrchr_~s.offset := cstrchr_#in~s.base, cstrchr_#in~s.offset;cstrchr_~c := cstrchr_#in~c; 205#L516-5 [2019-11-28 21:25:24,505 INFO L796 eck$LassoCheckResult]: Loop: 205#L516-5 call cstrchr_#t~mem2 := read~int(cstrchr_~s.base, cstrchr_~s.offset, 1);cstrchr_#t~short4 := 0 != cstrchr_#t~mem2; 198#L516-1 assume cstrchr_#t~short4;call cstrchr_#t~mem3 := read~int(cstrchr_~s.base, cstrchr_~s.offset, 1);cstrchr_#t~short4 := cstrchr_#t~mem3 != (if cstrchr_~c % 256 <= 127 then cstrchr_~c % 256 else cstrchr_~c % 256 - 256); 199#L516-3 assume !!cstrchr_#t~short4;havoc cstrchr_#t~short4;havoc cstrchr_#t~mem3;havoc cstrchr_#t~mem2;cstrchr_#t~post5.base, cstrchr_#t~post5.offset := cstrchr_~s.base, cstrchr_~s.offset;cstrchr_~s.base, cstrchr_~s.offset := cstrchr_#t~post5.base, 1 + cstrchr_#t~post5.offset;havoc cstrchr_#t~post5.base, cstrchr_#t~post5.offset; 205#L516-5 [2019-11-28 21:25:24,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 21:25:24,505 INFO L82 PathProgramCache]: Analyzing trace with hash 176793839, now seen corresponding path program 1 times [2019-11-28 21:25:24,506 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 21:25:24,507 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121885956] [2019-11-28 21:25:24,507 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 21:25:24,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 21:25:24,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 21:25:24,553 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 21:25:24,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 21:25:24,555 INFO L82 PathProgramCache]: Analyzing trace with hash 57699, now seen corresponding path program 2 times [2019-11-28 21:25:24,555 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 21:25:24,556 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439950726] [2019-11-28 21:25:24,556 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 21:25:24,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 21:25:24,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 21:25:24,580 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 21:25:24,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 21:25:24,582 INFO L82 PathProgramCache]: Analyzing trace with hash 1235380661, now seen corresponding path program 1 times [2019-11-28 21:25:24,582 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 21:25:24,582 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891084454] [2019-11-28 21:25:24,583 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 21:25:24,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 21:25:24,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 21:25:24,651 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 21:25:24,762 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 38 [2019-11-28 21:25:24,882 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 35 [2019-11-28 21:25:25,087 WARN L192 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2019-11-28 21:25:25,172 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 21:25:25,172 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 21:25:25,173 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 21:25:25,173 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 21:25:25,173 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 21:25:25,173 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 21:25:25,173 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 21:25:25,173 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 21:25:25,174 INFO L133 ssoRankerPreferences]: Filename of dumped script: cstrchr-alloca-2.i_Iteration4_Lasso [2019-11-28 21:25:25,174 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 21:25:25,174 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 21:25:25,179 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 21:25:25,330 WARN L192 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 46 [2019-11-28 21:25:25,466 WARN L192 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 45 [2019-11-28 21:25:25,467 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 21:25:25,469 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 21:25:25,471 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 21:25:25,473 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 21:25:25,475 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 21:25:25,482 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 21:25:25,485 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 21:25:25,487 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 21:25:25,489 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 21:25:25,491 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 21:25:25,494 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 21:25:25,496 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 21:25:25,498 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 21:25:25,500 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 21:25:25,502 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 21:25:25,504 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 21:25:25,506 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 21:25:25,509 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 21:25:25,511 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 21:25:25,513 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 21:25:25,516 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 21:25:26,021 WARN L192 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 36 [2019-11-28 21:25:26,183 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 21:25:26,183 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 21:25:26,193 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 [2019-11-28 21:25:26,195 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 21:25:26,195 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 21:25:26,195 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 21:25:26,195 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 21:25:26,201 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 21:25:26,201 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-28 21:25:26,209 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 [2019-11-28 21:25:26,216 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 [2019-11-28 21:25:26,217 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 21:25:26,217 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 21:25:26,218 INFO L204 nArgumentSynthesizer]: 6 loop disjuncts [2019-11-28 21:25:26,218 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 21:25:26,282 INFO L401 nArgumentSynthesizer]: We have 96 Motzkin's Theorem applications. [2019-11-28 21:25:26,282 INFO L402 nArgumentSynthesizer]: A total of 12 supporting invariants were added. [2019-11-28 21:25:26,436 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 21:25:26,459 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 [2019-11-28 21:25:26,460 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 21:25:26,461 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 21:25:26,461 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 21:25:26,461 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 21:25:26,465 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 21:25:26,465 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 21:25:26,475 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) [2019-11-28 21:25:26,490 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 21:25:26,492 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 21:25:26,492 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 21:25:26,492 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 21:25:26,492 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 21:25:26,494 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 21:25:26,494 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 21:25:26,504 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) [2019-11-28 21:25:26,516 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 [2019-11-28 21:25:26,518 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 21:25:26,518 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 21:25:26,518 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 21:25:26,518 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 21:25:26,527 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 21:25:26,528 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 21:25:26,545 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 21:25:26,663 INFO L443 ModelExtractionUtils]: Simplification made 14 calls to the SMT solver. [2019-11-28 21:25:26,663 INFO L444 ModelExtractionUtils]: 17 out of 31 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 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 21:25:26,668 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 21:25:26,670 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2019-11-28 21:25:26,670 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 21:25:26,670 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_cstrchr_~s.offset, v_rep(select #length ULTIMATE.start_main_#t~malloc9.base)_2) = -1*ULTIMATE.start_cstrchr_~s.offset + 1*v_rep(select #length ULTIMATE.start_main_#t~malloc9.base)_2 Supporting invariants [] [2019-11-28 21:25:26,688 INFO L297 tatePredicateManager]: 4 out of 5 supporting invariants were superfluous and have been removed [2019-11-28 21:25:26,691 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2019-11-28 21:25:26,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 21:25:26,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 21:25:26,732 INFO L264 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-28 21:25:26,733 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 21:25:26,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 21:25:26,753 INFO L264 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-28 21:25:26,754 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 21:25:26,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 21:25:26,776 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 [2019-11-28 21:25:26,776 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 13 transitions. cyclomatic complexity: 4 Second operand 4 states. [2019-11-28 21:25:26,824 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 13 transitions. cyclomatic complexity: 4. Second operand 4 states. Result 14 states and 17 transitions. Complement of second has 5 states. [2019-11-28 21:25:26,825 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-28 21:25:26,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-28 21:25:26,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2019-11-28 21:25:26,826 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 8 letters. Loop has 3 letters. [2019-11-28 21:25:26,827 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 21:25:26,827 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 11 letters. Loop has 3 letters. [2019-11-28 21:25:26,827 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 21:25:26,827 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 8 letters. Loop has 6 letters. [2019-11-28 21:25:26,827 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 21:25:26,828 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 17 transitions. [2019-11-28 21:25:26,829 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-28 21:25:26,829 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 0 states and 0 transitions. [2019-11-28 21:25:26,830 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-28 21:25:26,830 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-28 21:25:26,830 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-28 21:25:26,830 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-28 21:25:26,831 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 21:25:26,831 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 21:25:26,832 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 21:25:26,832 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-11-28 21:25:26,832 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-28 21:25:26,833 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-28 21:25:26,833 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-28 21:25:26,842 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 09:25:26 BoogieIcfgContainer [2019-11-28 21:25:26,842 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-28 21:25:26,843 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 21:25:26,843 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 21:25:26,843 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 21:25:26,844 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 09:25:21" (3/4) ... [2019-11-28 21:25:26,847 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-28 21:25:26,848 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 21:25:26,850 INFO L168 Benchmark]: Toolchain (without parser) took 6306.12 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 227.0 MB). Free memory was 957.7 MB in the beginning and 889.7 MB in the end (delta: 68.0 MB). Peak memory consumption was 295.0 MB. Max. memory is 11.5 GB. [2019-11-28 21:25:26,850 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 21:25:26,852 INFO L168 Benchmark]: CACSL2BoogieTranslator took 678.97 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 155.7 MB). Free memory was 952.3 MB in the beginning and 1.1 GB in the end (delta: -184.3 MB). Peak memory consumption was 15.1 MB. Max. memory is 11.5 GB. [2019-11-28 21:25:26,853 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.30 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: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2019-11-28 21:25:26,854 INFO L168 Benchmark]: Boogie Preprocessor took 29.76 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. [2019-11-28 21:25:26,854 INFO L168 Benchmark]: RCFGBuilder took 392.92 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: 18.1 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. [2019-11-28 21:25:26,855 INFO L168 Benchmark]: BuchiAutomizer took 5149.47 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 71.3 MB). Free memory was 1.1 GB in the beginning and 889.7 MB in the end (delta: 222.0 MB). Peak memory consumption was 293.3 MB. Max. memory is 11.5 GB. [2019-11-28 21:25:26,856 INFO L168 Benchmark]: Witness Printer took 5.22 ms. Allocated memory is still 1.3 GB. Free memory was 889.7 MB in the beginning and 889.7 MB in the end (delta: 24 B). Peak memory consumption was 24 B. Max. memory is 11.5 GB. [2019-11-28 21:25:26,861 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 678.97 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 155.7 MB). Free memory was 952.3 MB in the beginning and 1.1 GB in the end (delta: -184.3 MB). Peak memory consumption was 15.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 45.30 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: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 29.76 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 392.92 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: 18.1 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 5149.47 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 71.3 MB). Free memory was 1.1 GB in the beginning and 889.7 MB in the end (delta: 222.0 MB). Peak memory consumption was 293.3 MB. Max. memory is 11.5 GB. * Witness Printer took 5.22 ms. Allocated memory is still 1.3 GB. Free memory was 889.7 MB in the beginning and 889.7 MB 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 - GenericResult: Unfinished Backtranslation unknown boogie variable #length * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (2 trivial, 2 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -1 * i + unknown-#length-unknown[nondetString] and consists of 5 locations. One deterministic module has affine ranking function -1 * s + unknown-#length-unknown[__builtin_alloca (length * sizeof(char))] and consists of 4 locations. 2 modules have a trivial ranking function, the largest among these consists of 7 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 5.1s and 5 iterations. TraceHistogramMax:1. Analysis of lassos took 4.4s. Construction of modules took 0.1s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 4. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 11 states and ocurred in iteration 1. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 40 SDtfs, 48 SDslu, 41 SDs, 0 SdLazy, 61 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT0 conc1 concLT0 SILN0 SILU0 SILI0 SILT0 lasso2 LassoPreprocessingBenchmarks: Lassos: inital145 mio100 ax114 hnf99 lsp84 ukn77 mio100 lsp52 div106 bol100 ite100 ukn100 eq161 hnf90 smp96 dnf394 smp63 tf100 neg97 sie107 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 224ms VariablesStem: 3 VariablesLoop: 4 DisjunctsStem: 1 DisjunctsLoop: 6 SupportingInvariants: 12 MotzkinApplications: 96 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...