./Ultimate.py --spec /storage/repos/svcomp/c/properties/termination.prp --file /storage/repos/svcomp/c/termination-memory-alloca/cstrchr-alloca_true-termination.c.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 2e94e6aa Calling Ultimate with: 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 /storage/repos/svcomp/c/termination-memory-alloca/cstrchr-alloca_true-termination.c.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 5bb49c482aaa1a2241193483b61f4d87bfc9c366 ....................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-2e94e6a [2019-01-01 21:49:09,736 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-01 21:49:09,738 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-01 21:49:09,755 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-01 21:49:09,756 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-01 21:49:09,760 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-01 21:49:09,762 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-01 21:49:09,765 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-01 21:49:09,769 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-01 21:49:09,775 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-01 21:49:09,777 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-01-01 21:49:09,782 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-01-01 21:49:09,783 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-01-01 21:49:09,784 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-01-01 21:49:09,786 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-01-01 21:49:09,786 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-01-01 21:49:09,791 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-01-01 21:49:09,794 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-01-01 21:49:09,800 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2019-01-01 21:49:09,804 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-01-01 21:49:09,807 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-01-01 21:49:09,809 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-01-01 21:49:09,815 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-01-01 21:49:09,815 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-01-01 21:49:09,815 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-01-01 21:49:09,818 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-01-01 21:49:09,820 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-01-01 21:49:09,821 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-01-01 21:49:09,822 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2019-01-01 21:49:09,823 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-01-01 21:49:09,823 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2019-01-01 21:49:09,824 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-01-01 21:49:09,824 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-01-01 21:49:09,824 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2019-01-01 21:49:09,826 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2019-01-01 21:49:09,827 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2019-01-01 21:49:09,827 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-01-01 21:49:09,849 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-01 21:49:09,849 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-01 21:49:09,851 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-01 21:49:09,852 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-01 21:49:09,852 INFO L133 SettingsManager]: * Use SBE=true [2019-01-01 21:49:09,852 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-01-01 21:49:09,853 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-01-01 21:49:09,853 INFO L133 SettingsManager]: * Use old map elimination=false [2019-01-01 21:49:09,853 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2019-01-01 21:49:09,853 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2019-01-01 21:49:09,853 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-01-01 21:49:09,853 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-01 21:49:09,854 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-01-01 21:49:09,854 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-01 21:49:09,854 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-01 21:49:09,854 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-01-01 21:49:09,854 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-01-01 21:49:09,854 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-01-01 21:49:09,857 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-01-01 21:49:09,857 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-01-01 21:49:09,857 INFO L133 SettingsManager]: * Use constant arrays=true [2019-01-01 21:49:09,858 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-01-01 21:49:09,858 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-01 21:49:09,858 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-01 21:49:09,858 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-01-01 21:49:09,858 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-01 21:49:09,859 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2019-01-01 21:49:09,859 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-01-01 21:49:09,862 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-01-01 21:49:09,862 INFO L133 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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5bb49c482aaa1a2241193483b61f4d87bfc9c366 [2019-01-01 21:49:09,906 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-01 21:49:09,918 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-01 21:49:09,922 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-01 21:49:09,924 INFO L271 PluginConnector]: Initializing CDTParser... [2019-01-01 21:49:09,924 INFO L276 PluginConnector]: CDTParser initialized [2019-01-01 21:49:09,925 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/termination-memory-alloca/cstrchr-alloca_true-termination.c.i [2019-01-01 21:49:09,989 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8d2d0074/8e84eac812fe456480ecf6f5ef1afbf4/FLAG0d0cde866 [2019-01-01 21:49:10,506 INFO L307 CDTParser]: Found 1 translation units. [2019-01-01 21:49:10,507 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/termination-memory-alloca/cstrchr-alloca_true-termination.c.i [2019-01-01 21:49:10,523 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8d2d0074/8e84eac812fe456480ecf6f5ef1afbf4/FLAG0d0cde866 [2019-01-01 21:49:10,800 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8d2d0074/8e84eac812fe456480ecf6f5ef1afbf4 [2019-01-01 21:49:10,803 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-01 21:49:10,805 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-01-01 21:49:10,806 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-01-01 21:49:10,806 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-01-01 21:49:10,809 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2019-01-01 21:49:10,810 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.01 09:49:10" (1/1) ... [2019-01-01 21:49:10,813 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79cebd49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:49:10, skipping insertion in model container [2019-01-01 21:49:10,813 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.01 09:49:10" (1/1) ... [2019-01-01 21:49:10,821 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-01-01 21:49:10,865 INFO L176 MainTranslator]: Built tables and reachable declarations [2019-01-01 21:49:11,264 INFO L204 PostProcessor]: Analyzing one entry point: main [2019-01-01 21:49:11,283 INFO L191 MainTranslator]: Completed pre-run [2019-01-01 21:49:11,405 INFO L204 PostProcessor]: Analyzing one entry point: main [2019-01-01 21:49:11,479 INFO L195 MainTranslator]: Completed translation [2019-01-01 21:49:11,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:49:11 WrapperNode [2019-01-01 21:49:11,480 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-01-01 21:49:11,481 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-01-01 21:49:11,481 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-01-01 21:49:11,481 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-01-01 21:49:11,491 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:49:11" (1/1) ... [2019-01-01 21:49:11,515 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:49:11" (1/1) ... [2019-01-01 21:49:11,540 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-01-01 21:49:11,541 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-01 21:49:11,541 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-01 21:49:11,541 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-01 21:49:11,552 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:49:11" (1/1) ... [2019-01-01 21:49:11,553 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:49:11" (1/1) ... [2019-01-01 21:49:11,557 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:49:11" (1/1) ... [2019-01-01 21:49:11,562 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:49:11" (1/1) ... [2019-01-01 21:49:11,574 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:49:11" (1/1) ... [2019-01-01 21:49:11,586 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:49:11" (1/1) ... [2019-01-01 21:49:11,595 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:49:11" (1/1) ... [2019-01-01 21:49:11,597 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-01 21:49:11,597 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-01 21:49:11,598 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-01 21:49:11,598 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-01 21:49:11,599 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:49:11" (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 [2019-01-01 21:49:11,660 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-01-01 21:49:11,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-01-01 21:49:11,661 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-01-01 21:49:11,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-01-01 21:49:11,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-01 21:49:11,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-01 21:49:12,038 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-01 21:49:12,039 INFO L280 CfgBuilder]: Removed 7 assue(true) statements. [2019-01-01 21:49:12,039 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.01 09:49:12 BoogieIcfgContainer [2019-01-01 21:49:12,039 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-01 21:49:12,040 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-01-01 21:49:12,040 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-01-01 21:49:12,045 INFO L276 PluginConnector]: BuchiAutomizer initialized [2019-01-01 21:49:12,046 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-01-01 21:49:12,047 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 01.01 09:49:10" (1/3) ... [2019-01-01 21:49:12,048 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1a721f53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.01 09:49:12, skipping insertion in model container [2019-01-01 21:49:12,048 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-01-01 21:49:12,050 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:49:11" (2/3) ... [2019-01-01 21:49:12,050 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1a721f53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.01 09:49:12, skipping insertion in model container [2019-01-01 21:49:12,051 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-01-01 21:49:12,051 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.01 09:49:12" (3/3) ... [2019-01-01 21:49:12,053 INFO L375 chiAutomizerObserver]: Analyzing ICFG cstrchr-alloca_true-termination.c.i [2019-01-01 21:49:12,112 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2019-01-01 21:49:12,113 INFO L374 BuchiCegarLoop]: Interprodecural is true [2019-01-01 21:49:12,113 INFO L375 BuchiCegarLoop]: Hoare is false [2019-01-01 21:49:12,113 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-01-01 21:49:12,114 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-01 21:49:12,114 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-01 21:49:12,114 INFO L379 BuchiCegarLoop]: Difference is false [2019-01-01 21:49:12,114 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-01 21:49:12,114 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-01-01 21:49:12,128 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states. [2019-01-01 21:49:12,148 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-01-01 21:49:12,148 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-01-01 21:49:12,148 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-01-01 21:49:12,155 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-01-01 21:49:12,155 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-01-01 21:49:12,155 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2019-01-01 21:49:12,155 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states. [2019-01-01 21:49:12,157 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-01-01 21:49:12,157 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-01-01 21:49:12,157 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-01-01 21:49:12,157 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-01-01 21:49:12,158 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-01-01 21:49:12,166 INFO L794 eck$LassoCheckResult]: Stem: 11#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0]; 9#L-1true havoc main_#res;havoc main_#t~nondet8, main_#t~malloc9.base, main_#t~malloc9.offset, main_#t~nondet10, main_#t~ret11.base, main_#t~ret11.offset, main_~length~0, main_~nondetString~0.base, main_~nondetString~0.offset;main_~length~0 := main_#t~nondet8;havoc main_#t~nondet8; 6#L555true assume !(main_~length~0 < 1); 10#L555-2true call main_#t~malloc9.base, main_#t~malloc9.offset := #Ultimate.allocOnStack(main_~length~0);main_~nondetString~0.base, main_~nondetString~0.offset := main_#t~malloc9.base, main_#t~malloc9.offset;call write~int(0, main_~nondetString~0.base, main_~nondetString~0.offset + (main_~length~0 - 1), 1);cstrchr_#in~s.base, cstrchr_#in~s.offset, cstrchr_#in~c := main_~nondetString~0.base, main_~nondetString~0.offset, main_#t~nondet10;havoc cstrchr_#res.base, cstrchr_#res.offset;havoc cstrchr_#t~post5.base, cstrchr_#t~post5.offset, cstrchr_#t~mem2, cstrchr_#t~mem3, cstrchr_#t~short4, cstrchr_#t~mem6, cstrchr_#t~ite7.base, cstrchr_#t~ite7.offset, cstrchr_~s.base, cstrchr_~s.offset, cstrchr_~c;cstrchr_~s.base, cstrchr_~s.offset := cstrchr_#in~s.base, cstrchr_#in~s.offset;cstrchr_~c := cstrchr_#in~c; 7#L549-5true [2019-01-01 21:49:12,166 INFO L796 eck$LassoCheckResult]: Loop: 7#L549-5true call cstrchr_#t~mem2 := read~int(cstrchr_~s.base, cstrchr_~s.offset, 1);cstrchr_#t~short4 := 0 != cstrchr_#t~mem2; 3#L549-1true 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); 5#L549-3true assume !!cstrchr_#t~short4;havoc cstrchr_#t~short4;havoc cstrchr_#t~mem2;havoc cstrchr_#t~mem3;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; 7#L549-5true [2019-01-01 21:49:12,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 21:49:12,174 INFO L82 PathProgramCache]: Analyzing trace with hash 925669, now seen corresponding path program 1 times [2019-01-01 21:49:12,176 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-01 21:49:12,177 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-01 21:49:12,233 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:49:12,233 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-01 21:49:12,234 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:49:12,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 21:49:12,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 21:49:12,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 21:49:12,322 INFO L82 PathProgramCache]: Analyzing trace with hash 43797, now seen corresponding path program 1 times [2019-01-01 21:49:12,322 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-01 21:49:12,322 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-01 21:49:12,324 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:49:12,324 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-01 21:49:12,324 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:49:12,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 21:49:12,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 21:49:12,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 21:49:12,350 INFO L82 PathProgramCache]: Analyzing trace with hash 1806815409, now seen corresponding path program 1 times [2019-01-01 21:49:12,350 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-01 21:49:12,350 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-01 21:49:12,352 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:49:12,352 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-01 21:49:12,352 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:49:12,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 21:49:12,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 21:49:12,841 WARN L181 SmtUtils]: Spent 419.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 38 [2019-01-01 21:49:13,361 WARN L181 SmtUtils]: Spent 459.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 35 [2019-01-01 21:49:13,632 WARN L181 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 57 [2019-01-01 21:49:13,973 WARN L181 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2019-01-01 21:49:13,985 INFO L216 LassoAnalysis]: Preferences: [2019-01-01 21:49:13,986 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-01-01 21:49:13,987 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-01-01 21:49:13,987 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-01-01 21:49:13,987 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-01-01 21:49:13,987 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-01 21:49:13,988 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-01-01 21:49:13,988 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-01-01 21:49:13,988 INFO L131 ssoRankerPreferences]: Filename of dumped script: cstrchr-alloca_true-termination.c.i_Iteration1_Lasso [2019-01-01 21:49:13,988 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-01-01 21:49:13,988 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2019-01-01 21:49:14,016 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-01 21:49:14,021 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-01 21:49:14,178 WARN L181 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 41 [2019-01-01 21:49:14,331 WARN L181 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 43 [2019-01-01 21:49:14,331 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-01 21:49:14,334 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-01 21:49:14,358 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-01 21:49:14,361 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-01 21:49:14,366 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-01 21:49:14,369 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-01 21:49:14,376 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-01 21:49:14,379 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-01 21:49:14,383 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-01 21:49:14,396 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-01 21:49:14,402 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-01 21:49:14,405 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-01 21:49:14,411 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-01 21:49:14,413 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-01 21:49:14,420 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-01 21:49:14,423 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-01 21:49:14,429 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-01 21:49:14,439 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-01-01 21:49:15,141 WARN L181 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 36 [2019-01-01 21:49:15,308 INFO L300 LassoAnalysis]: Preprocessing complete. [2019-01-01 21:49:15,314 INFO L497 LassoAnalysis]: Using template 'affine'. [2019-01-01 21:49:15,317 INFO L122 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 [2019-01-01 21:49:15,319 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2019-01-01 21:49:15,319 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-01-01 21:49:15,320 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2019-01-01 21:49:15,320 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2019-01-01 21:49:15,320 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2019-01-01 21:49:15,322 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-01-01 21:49:15,323 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-01-01 21:49:15,324 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-01-01 21:49:15,325 INFO L122 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 [2019-01-01 21:49:15,326 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2019-01-01 21:49:15,326 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2019-01-01 21:49:15,326 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2019-01-01 21:49:15,326 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2019-01-01 21:49:15,330 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-01-01 21:49:15,331 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-01-01 21:49:15,339 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-01-01 21:49:15,341 INFO L122 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 [2019-01-01 21:49:15,342 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2019-01-01 21:49:15,342 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2019-01-01 21:49:15,342 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2019-01-01 21:49:15,342 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2019-01-01 21:49:15,350 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-01-01 21:49:15,351 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-01-01 21:49:15,386 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-01-01 21:49:15,389 INFO L122 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 [2019-01-01 21:49:15,392 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2019-01-01 21:49:15,393 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2019-01-01 21:49:15,393 INFO L206 nArgumentSynthesizer]: 6 loop disjuncts [2019-01-01 21:49:15,393 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2019-01-01 21:49:15,467 INFO L402 nArgumentSynthesizer]: We have 96 Motzkin's Theorem applications. [2019-01-01 21:49:15,468 INFO L403 nArgumentSynthesizer]: A total of 12 supporting invariants were added. [2019-01-01 21:49:15,690 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-01-01 21:49:15,691 INFO L122 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 [2019-01-01 21:49:15,691 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2019-01-01 21:49:15,692 INFO L205 nArgumentSynthesizer]: 2 stem disjuncts [2019-01-01 21:49:15,692 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2019-01-01 21:49:15,692 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2019-01-01 21:49:15,695 INFO L402 nArgumentSynthesizer]: We have 8 Motzkin's Theorem applications. [2019-01-01 21:49:15,695 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-01-01 21:49:15,705 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-01-01 21:49:15,705 INFO L122 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 [2019-01-01 21:49:15,706 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2019-01-01 21:49:15,706 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2019-01-01 21:49:15,706 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2019-01-01 21:49:15,707 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2019-01-01 21:49:15,708 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-01-01 21:49:15,708 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-01-01 21:49:15,710 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-01-01 21:49:15,710 INFO L122 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 [2019-01-01 21:49:15,711 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2019-01-01 21:49:15,711 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2019-01-01 21:49:15,711 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2019-01-01 21:49:15,711 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2019-01-01 21:49:15,714 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-01-01 21:49:15,714 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-01-01 21:49:15,730 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-01-01 21:49:15,778 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2019-01-01 21:49:15,779 INFO L444 ModelExtractionUtils]: 20 out of 25 variables were initially zero. Simplification set additionally 2 variables to zero. [2019-01-01 21:49:15,781 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-01-01 21:49:15,783 INFO L440 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2019-01-01 21:49:15,784 INFO L518 LassoAnalysis]: Proved termination. [2019-01-01 21:49:15,785 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_cstrchr_~s.offset, v_rep(select #length ULTIMATE.start_cstrchr_~s.base)_1) = -1*ULTIMATE.start_cstrchr_~s.offset + 1*v_rep(select #length ULTIMATE.start_cstrchr_~s.base)_1 Supporting invariants [] [2019-01-01 21:49:15,891 INFO L297 tatePredicateManager]: 4 out of 4 supporting invariants were superfluous and have been removed [2019-01-01 21:49:15,913 WARN L1298 BoogieBacktranslator]: unknown boogie variable #length [2019-01-01 21:49:16,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 21:49:16,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-01 21:49:16,229 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-01 21:49:16,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-01 21:49:16,260 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-01 21:49:16,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-01 21:49:16,421 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 [2019-01-01 21:49:16,422 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 14 states. Second operand 3 states. [2019-01-01 21:49:16,486 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 14 states.. Second operand 3 states. Result 31 states and 39 transitions. Complement of second has 5 states. [2019-01-01 21:49:16,493 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-01-01 21:49:16,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-01-01 21:49:16,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 25 transitions. [2019-01-01 21:49:16,498 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 4 letters. Loop has 3 letters. [2019-01-01 21:49:16,500 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-01-01 21:49:16,500 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 7 letters. Loop has 3 letters. [2019-01-01 21:49:16,500 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-01-01 21:49:16,501 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 4 letters. Loop has 6 letters. [2019-01-01 21:49:16,501 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-01-01 21:49:16,503 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 39 transitions. [2019-01-01 21:49:16,506 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-01-01 21:49:16,510 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 0 states and 0 transitions. [2019-01-01 21:49:16,512 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-01-01 21:49:16,512 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-01-01 21:49:16,513 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-01-01 21:49:16,513 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-01-01 21:49:16,513 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-01-01 21:49:16,514 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-01-01 21:49:16,514 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-01-01 21:49:16,514 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2019-01-01 21:49:16,514 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-01-01 21:49:16,514 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-01-01 21:49:16,514 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-01-01 21:49:16,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.01 09:49:16 BoogieIcfgContainer [2019-01-01 21:49:16,523 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-01-01 21:49:16,523 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-01-01 21:49:16,524 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-01-01 21:49:16,524 INFO L276 PluginConnector]: Witness Printer initialized [2019-01-01 21:49:16,524 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.01 09:49:12" (3/4) ... [2019-01-01 21:49:16,530 INFO L147 WitnessPrinter]: No result that supports witness generation found [2019-01-01 21:49:16,530 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-01-01 21:49:16,532 INFO L168 Benchmark]: Toolchain (without parser) took 5727.75 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.1 MB). Free memory was 952.7 MB in the beginning and 812.6 MB in the end (delta: 140.0 MB). Peak memory consumption was 271.1 MB. Max. memory is 11.5 GB. [2019-01-01 21:49:16,533 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-01 21:49:16,534 INFO L168 Benchmark]: CACSL2BoogieTranslator took 674.65 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.1 MB). Free memory was 952.7 MB in the beginning and 1.1 GB in the end (delta: -152.3 MB). Peak memory consumption was 32.6 MB. Max. memory is 11.5 GB. [2019-01-01 21:49:16,535 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.99 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. [2019-01-01 21:49:16,536 INFO L168 Benchmark]: Boogie Preprocessor took 55.95 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. [2019-01-01 21:49:16,537 INFO L168 Benchmark]: RCFGBuilder took 441.85 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: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 11.5 GB. [2019-01-01 21:49:16,538 INFO L168 Benchmark]: BuchiAutomizer took 4483.25 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 812.6 MB in the end (delta: 273.4 MB). Peak memory consumption was 273.4 MB. Max. memory is 11.5 GB. [2019-01-01 21:49:16,539 INFO L168 Benchmark]: Witness Printer took 6.63 ms. Allocated memory is still 1.2 GB. Free memory is still 812.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-01 21:49:16,545 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 674.65 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.1 MB). Free memory was 952.7 MB in the beginning and 1.1 GB in the end (delta: -152.3 MB). Peak memory consumption was 32.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 59.99 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. * Boogie Preprocessor took 55.95 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 441.85 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: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 4483.25 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 812.6 MB in the end (delta: 273.4 MB). Peak memory consumption was 273.4 MB. Max. memory is 11.5 GB. * Witness Printer took 6.63 ms. Allocated memory is still 1.2 GB. Free memory is still 812.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #length * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 1 terminating modules (0 trivial, 1 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -1 * s + unknown-#length-unknown[s] and consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.4s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 3.7s. Construction of modules took 0.0s. Büchi inclusion checks took 0.5s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 0 states and ocurred in iteration 1. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 12 SDtfs, 25 SDslu, 7 SDs, 0 SdLazy, 9 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital180 mio100 ax110 hnf98 lsp88 ukn70 mio100 lsp33 div169 bol100 ite100 ukn100 eq153 hnf65 smp100 dnf873 smp27 tf100 neg95 sie112 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 301ms 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...