./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-15/cstrchr_reverse_alloca.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 20ed64ec Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-15/cstrchr_reverse_alloca.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 a273450068a0d5a7644f3536efd5c3c568bd1daf ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-27 14:31:49,607 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 14:31:49,609 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 14:31:49,650 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 14:31:49,651 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 14:31:49,655 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 14:31:49,657 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 14:31:49,663 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 14:31:49,665 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 14:31:49,671 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 14:31:49,672 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 14:31:49,676 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 14:31:49,676 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 14:31:49,678 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 14:31:49,680 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 14:31:49,684 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 14:31:49,685 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 14:31:49,686 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 14:31:49,689 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 14:31:49,693 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 14:31:49,697 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 14:31:49,698 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 14:31:49,699 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 14:31:49,700 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 14:31:49,702 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 14:31:49,703 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 14:31:49,703 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 14:31:49,705 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 14:31:49,706 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 14:31:49,706 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 14:31:49,707 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 14:31:49,707 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 14:31:49,709 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 14:31:49,709 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 14:31:49,710 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 14:31:49,711 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 14:31:49,711 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 14:31:49,712 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 14:31:49,712 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 14:31:49,713 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 14:31:49,714 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 14:31:49,715 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-08-27 14:31:49,753 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 14:31:49,753 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 14:31:49,754 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 14:31:49,754 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 14:31:49,756 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 14:31:49,756 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 14:31:49,756 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 14:31:49,757 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-27 14:31:49,757 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-27 14:31:49,757 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-27 14:31:49,758 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-27 14:31:49,758 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-27 14:31:49,758 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-27 14:31:49,758 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 14:31:49,758 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 14:31:49,759 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 14:31:49,759 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 14:31:49,759 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-27 14:31:49,759 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-27 14:31:49,759 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-27 14:31:49,759 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 14:31:49,760 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-27 14:31:49,760 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 14:31:49,760 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-27 14:31:49,760 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 14:31:49,760 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 14:31:49,761 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 14:31:49,761 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 14:31:49,761 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 14:31:49,762 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-27 14:31:49,762 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a273450068a0d5a7644f3536efd5c3c568bd1daf [2021-08-27 14:31:50,045 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 14:31:50,068 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 14:31:50,071 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 14:31:50,072 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 14:31:50,072 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 14:31:50,073 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-15/cstrchr_reverse_alloca.i [2021-08-27 14:31:50,145 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05149b2c2/3c5bf7d36b404195aa77b1b62dcd279d/FLAG46e4f91a1 [2021-08-27 14:31:50,615 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 14:31:50,615 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-15/cstrchr_reverse_alloca.i [2021-08-27 14:31:50,622 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05149b2c2/3c5bf7d36b404195aa77b1b62dcd279d/FLAG46e4f91a1 [2021-08-27 14:31:50,635 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05149b2c2/3c5bf7d36b404195aa77b1b62dcd279d [2021-08-27 14:31:50,637 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 14:31:50,639 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 14:31:50,640 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 14:31:50,640 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 14:31:50,643 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 14:31:50,644 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 02:31:50" (1/1) ... [2021-08-27 14:31:50,645 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31a98bb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:31:50, skipping insertion in model container [2021-08-27 14:31:50,645 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 02:31:50" (1/1) ... [2021-08-27 14:31:50,650 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 14:31:50,671 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 14:31:50,861 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 14:31:50,867 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 14:31:50,931 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 14:31:50,967 INFO L208 MainTranslator]: Completed translation [2021-08-27 14:31:50,968 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:31:50 WrapperNode [2021-08-27 14:31:50,968 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 14:31:50,969 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 14:31:50,969 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 14:31:50,969 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 14:31:50,976 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:31:50" (1/1) ... [2021-08-27 14:31:50,998 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:31:50" (1/1) ... [2021-08-27 14:31:51,017 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 14:31:51,019 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 14:31:51,020 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 14:31:51,020 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 14:31:51,026 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:31:50" (1/1) ... [2021-08-27 14:31:51,026 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:31:50" (1/1) ... [2021-08-27 14:31:51,042 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:31:50" (1/1) ... [2021-08-27 14:31:51,042 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:31:50" (1/1) ... [2021-08-27 14:31:51,051 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:31:50" (1/1) ... [2021-08-27 14:31:51,055 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:31:50" (1/1) ... [2021-08-27 14:31:51,060 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:31:50" (1/1) ... [2021-08-27 14:31:51,064 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 14:31:51,067 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 14:31:51,067 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 14:31:51,067 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 14:31:51,068 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:31:50" (1/1) ... [2021-08-27 14:31:51,074 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:31:51,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:31:51,101 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:31:51,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-08-27 14:31:51,140 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-27 14:31:51,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-27 14:31:51,140 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 14:31:51,140 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-27 14:31:51,141 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 14:31:51,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 14:31:51,375 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 14:31:51,376 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-08-27 14:31:51,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 02:31:51 BoogieIcfgContainer [2021-08-27 14:31:51,377 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 14:31:51,378 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-27 14:31:51,379 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-27 14:31:51,381 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-27 14:31:51,382 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 14:31:51,382 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.08 02:31:50" (1/3) ... [2021-08-27 14:31:51,383 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@52d4d0b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 02:31:51, skipping insertion in model container [2021-08-27 14:31:51,383 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 14:31:51,383 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:31:50" (2/3) ... [2021-08-27 14:31:51,383 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@52d4d0b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 02:31:51, skipping insertion in model container [2021-08-27 14:31:51,384 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 14:31:51,384 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 02:31:51" (3/3) ... [2021-08-27 14:31:51,385 INFO L389 chiAutomizerObserver]: Analyzing ICFG cstrchr_reverse_alloca.i [2021-08-27 14:31:51,425 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-27 14:31:51,425 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-27 14:31:51,425 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-27 14:31:51,426 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-27 14:31:51,426 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-27 14:31:51,427 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-27 14:31:51,427 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-27 14:31:51,427 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-27 14:31:51,442 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 14 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:31:51,456 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-08-27 14:31:51,456 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 14:31:51,456 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 14:31:51,461 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-08-27 14:31:51,461 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-08-27 14:31:51,461 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-27 14:31:51,462 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 14 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:31:51,464 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-08-27 14:31:51,464 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 14:31:51,464 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 14:31:51,464 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-08-27 14:31:51,465 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-08-27 14:31:51,471 INFO L791 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 7#L-1true havoc main_#res;havoc main_#t~nondet211, main_#t~malloc212.base, main_#t~malloc212.offset, main_#t~nondet213, main_#t~ret214.base, main_#t~ret214.offset, main_~length~0, main_~nondetString~0.base, main_~nondetString~0.offset;main_~length~0 := main_#t~nondet211;havoc main_#t~nondet211; 13#L372true assume !(main_~length~0 < 1); 15#L372-2true call main_#t~malloc212.base, main_#t~malloc212.offset := #Ultimate.allocOnStack(main_~length~0);main_~nondetString~0.base, main_~nondetString~0.offset := main_#t~malloc212.base, main_#t~malloc212.offset;call write~int(0, main_~nondetString~0.base, main_~nondetString~0.offset, 1);main_~nondetString~0.base, main_~nondetString~0.offset := main_~nondetString~0.base, main_~nondetString~0.offset + (main_~length~0 - 1);cstrchr_#in~s.base, cstrchr_#in~s.offset, cstrchr_#in~c := main_~nondetString~0.base, main_~nondetString~0.offset, main_#t~nondet213;havoc cstrchr_#res.base, cstrchr_#res.offset;havoc cstrchr_#t~post208.base, cstrchr_#t~post208.offset, cstrchr_#t~mem205, cstrchr_#t~mem206, cstrchr_#t~short207, cstrchr_#t~mem209, cstrchr_#t~ite210.base, cstrchr_#t~ite210.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; 11#L366-5true [2021-08-27 14:31:51,472 INFO L793 eck$LassoCheckResult]: Loop: 11#L366-5true call cstrchr_#t~mem205 := read~int(cstrchr_~s.base, cstrchr_~s.offset, 1);cstrchr_#t~short207 := 0 != cstrchr_#t~mem205; 14#L366-1true assume cstrchr_#t~short207;call cstrchr_#t~mem206 := read~int(cstrchr_~s.base, cstrchr_~s.offset, 1);cstrchr_#t~short207 := cstrchr_#t~mem206 != (if cstrchr_~c % 256 <= 127 then cstrchr_~c % 256 else cstrchr_~c % 256 - 256); 6#L366-3true assume !!cstrchr_#t~short207;havoc cstrchr_#t~mem205;havoc cstrchr_#t~mem206;havoc cstrchr_#t~short207;cstrchr_#t~post208.base, cstrchr_#t~post208.offset := cstrchr_~s.base, cstrchr_~s.offset;cstrchr_~s.base, cstrchr_~s.offset := cstrchr_#t~post208.base, cstrchr_#t~post208.offset - 1;havoc cstrchr_#t~post208.base, cstrchr_#t~post208.offset; 11#L366-5true [2021-08-27 14:31:51,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:31:51,477 INFO L82 PathProgramCache]: Analyzing trace with hash 925669, now seen corresponding path program 1 times [2021-08-27 14:31:51,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:31:51,486 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498334610] [2021-08-27 14:31:51,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:31:51,488 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:31:51,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:31:51,589 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 14:31:51,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:31:51,641 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 14:31:51,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:31:51,654 INFO L82 PathProgramCache]: Analyzing trace with hash 43797, now seen corresponding path program 1 times [2021-08-27 14:31:51,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:31:51,655 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752081574] [2021-08-27 14:31:51,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:31:51,655 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:31:51,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:31:51,669 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 14:31:51,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:31:51,697 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 14:31:51,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:31:51,700 INFO L82 PathProgramCache]: Analyzing trace with hash 1806815409, now seen corresponding path program 1 times [2021-08-27 14:31:51,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:31:51,700 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355478794] [2021-08-27 14:31:51,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:31:51,701 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:31:51,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:31:51,744 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 14:31:51,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:31:51,785 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 14:31:52,402 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 14:31:52,403 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 14:31:52,403 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 14:31:52,403 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 14:31:52,403 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-08-27 14:31:52,403 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:31:52,403 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 14:31:52,403 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 14:31:52,404 INFO L133 ssoRankerPreferences]: Filename of dumped script: cstrchr_reverse_alloca.i_Iteration1_Lasso [2021-08-27 14:31:52,404 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 14:31:52,404 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 14:31:52,428 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:31:52,433 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:31:52,435 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:31:52,441 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:31:52,444 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:31:52,447 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:31:52,450 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:31:52,453 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:31:52,457 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:31:52,685 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:31:52,688 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:31:52,691 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:31:52,693 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:31:52,697 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:31:52,699 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:31:52,702 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:31:52,705 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:31:53,254 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 14:31:53,258 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-08-27 14:31:53,259 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:31:53,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:31:53,265 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:31:53,273 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-27 14:31:53,274 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-08-27 14:31:53,281 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 14:31:53,281 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 14:31:53,282 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 14:31:53,282 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 14:31:53,282 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 14:31:53,284 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 14:31:53,284 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 14:31:53,301 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-27 14:31:53,325 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2021-08-27 14:31:53,325 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:31:53,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:31:53,331 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:31:53,334 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-08-27 14:31:53,335 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-27 14:31:53,345 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 14:31:53,345 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 14:31:53,345 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 14:31:53,345 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 14:31:53,346 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 14:31:53,347 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 14:31:53,347 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 14:31:53,349 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-27 14:31:53,372 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-08-27 14:31:53,372 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:31:53,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:31:53,373 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:31:53,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-08-27 14:31:53,375 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-27 14:31:53,382 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 14:31:53,382 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 14:31:53,383 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 14:31:53,383 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 14:31:53,392 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-08-27 14:31:53,393 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-08-27 14:31:53,410 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-27 14:31:53,435 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-08-27 14:31:53,436 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:31:53,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:31:53,437 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:31:53,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-08-27 14:31:53,439 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-27 14:31:53,446 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 14:31:53,446 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 14:31:53,446 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 14:31:53,446 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 14:31:53,446 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 14:31:53,447 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 14:31:53,447 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 14:31:53,448 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-27 14:31:53,467 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-08-27 14:31:53,468 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:31:53,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:31:53,469 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:31:53,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-08-27 14:31:53,474 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-27 14:31:53,480 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 14:31:53,481 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 14:31:53,481 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 14:31:53,481 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 14:31:53,481 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 14:31:53,481 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 14:31:53,481 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 14:31:53,491 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-27 14:31:53,506 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2021-08-27 14:31:53,506 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:31:53,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:31:53,507 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:31:53,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-08-27 14:31:53,510 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-27 14:31:53,516 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 14:31:53,516 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 14:31:53,516 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 14:31:53,516 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 14:31:53,516 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 14:31:53,517 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 14:31:53,517 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 14:31:53,522 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-27 14:31:53,540 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-08-27 14:31:53,540 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:31:53,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:31:53,541 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:31:53,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-08-27 14:31:53,543 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-27 14:31:53,550 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 14:31:53,550 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 14:31:53,550 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 14:31:53,550 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 14:31:53,550 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 14:31:53,551 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 14:31:53,551 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 14:31:53,570 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-27 14:31:53,587 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-08-27 14:31:53,588 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:31:53,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:31:53,588 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:31:53,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-08-27 14:31:53,591 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-27 14:31:53,598 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 14:31:53,598 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 14:31:53,598 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 14:31:53,598 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 14:31:53,600 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-08-27 14:31:53,600 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-08-27 14:31:53,613 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-27 14:31:53,633 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-08-27 14:31:53,633 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:31:53,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:31:53,634 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:31:53,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-08-27 14:31:53,637 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-27 14:31:53,644 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 14:31:53,644 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 14:31:53,644 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 14:31:53,644 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 14:31:53,654 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-08-27 14:31:53,655 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-08-27 14:31:53,667 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-08-27 14:31:53,716 INFO L443 ModelExtractionUtils]: Simplification made 14 calls to the SMT solver. [2021-08-27 14:31:53,716 INFO L444 ModelExtractionUtils]: 14 out of 25 variables were initially zero. Simplification set additionally 8 variables to zero. [2021-08-27 14:31:53,718 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:31:53,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:31:53,748 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:31:53,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-08-27 14:31:53,811 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-08-27 14:31:53,848 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2021-08-27 14:31:53,849 INFO L513 LassoAnalysis]: Proved termination. [2021-08-27 14:31:53,849 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_cstrchr_~s.offset, v_rep(select #length ULTIMATE.start_main_#t~malloc212.base)_1) = 2*ULTIMATE.start_cstrchr_~s.offset + 1*v_rep(select #length ULTIMATE.start_main_#t~malloc212.base)_1 Supporting invariants [] [2021-08-27 14:31:53,870 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-08-27 14:31:53,880 INFO L297 tatePredicateManager]: 3 out of 4 supporting invariants were superfluous and have been removed [2021-08-27 14:31:53,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:31:53,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:31:53,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 8 conjunts are in the unsatisfiable core [2021-08-27 14:31:53,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 14:31:53,985 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-08-27 14:31:53,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:31:53,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 9 conjunts are in the unsatisfiable core [2021-08-27 14:31:54,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 14:31:54,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 14:31:54,092 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 [2021-08-27 14:31:54,094 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 14 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:31:54,161 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 14 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 28 states and 36 transitions. Complement of second has 6 states. [2021-08-27 14:31:54,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-08-27 14:31:54,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:31:54,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 22 transitions. [2021-08-27 14:31:54,164 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 4 letters. Loop has 3 letters. [2021-08-27 14:31:54,165 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 14:31:54,165 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 7 letters. Loop has 3 letters. [2021-08-27 14:31:54,165 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 14:31:54,165 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 4 letters. Loop has 6 letters. [2021-08-27 14:31:54,165 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 14:31:54,166 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 36 transitions. [2021-08-27 14:31:54,167 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-08-27 14:31:54,169 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 0 states and 0 transitions. [2021-08-27 14:31:54,170 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-08-27 14:31:54,170 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-08-27 14:31:54,170 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-08-27 14:31:54,170 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 14:31:54,170 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-27 14:31:54,170 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-27 14:31:54,170 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-27 14:31:54,170 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-27 14:31:54,170 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-08-27 14:31:54,170 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-08-27 14:31:54,171 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-08-27 14:31:54,174 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.08 02:31:54 BoogieIcfgContainer [2021-08-27 14:31:54,174 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-08-27 14:31:54,174 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 14:31:54,174 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 14:31:54,174 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 14:31:54,175 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 02:31:51" (3/4) ... [2021-08-27 14:31:54,177 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-27 14:31:54,177 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 14:31:54,178 INFO L168 Benchmark]: Toolchain (without parser) took 3538.70 ms. Allocated memory was 60.8 MB in the beginning and 119.5 MB in the end (delta: 58.7 MB). Free memory was 38.7 MB in the beginning and 77.1 MB in the end (delta: -38.3 MB). Peak memory consumption was 20.2 MB. Max. memory is 16.1 GB. [2021-08-27 14:31:54,178 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 60.8 MB. Free memory was 43.2 MB in the beginning and 43.2 MB in the end (delta: 43.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 14:31:54,179 INFO L168 Benchmark]: CACSL2BoogieTranslator took 328.46 ms. Allocated memory is still 60.8 MB. Free memory was 38.6 MB in the beginning and 37.8 MB in the end (delta: 849.8 kB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-08-27 14:31:54,179 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.29 ms. Allocated memory is still 60.8 MB. Free memory was 37.6 MB in the beginning and 35.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 14:31:54,180 INFO L168 Benchmark]: Boogie Preprocessor took 47.03 ms. Allocated memory is still 60.8 MB. Free memory was 35.7 MB in the beginning and 34.7 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 14:31:54,180 INFO L168 Benchmark]: RCFGBuilder took 310.63 ms. Allocated memory was 60.8 MB in the beginning and 75.5 MB in the end (delta: 14.7 MB). Free memory was 34.5 MB in the beginning and 53.1 MB in the end (delta: -18.5 MB). Peak memory consumption was 13.6 MB. Max. memory is 16.1 GB. [2021-08-27 14:31:54,181 INFO L168 Benchmark]: BuchiAutomizer took 2795.56 ms. Allocated memory was 75.5 MB in the beginning and 119.5 MB in the end (delta: 44.0 MB). Free memory was 52.8 MB in the beginning and 77.1 MB in the end (delta: -24.3 MB). Peak memory consumption was 19.4 MB. Max. memory is 16.1 GB. [2021-08-27 14:31:54,181 INFO L168 Benchmark]: Witness Printer took 2.36 ms. Allocated memory is still 119.5 MB. Free memory is still 77.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 14:31:54,184 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 60.8 MB. Free memory was 43.2 MB in the beginning and 43.2 MB in the end (delta: 43.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 328.46 ms. Allocated memory is still 60.8 MB. Free memory was 38.6 MB in the beginning and 37.8 MB in the end (delta: 849.8 kB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 49.29 ms. Allocated memory is still 60.8 MB. Free memory was 37.6 MB in the beginning and 35.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 47.03 ms. Allocated memory is still 60.8 MB. Free memory was 35.7 MB in the beginning and 34.7 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 310.63 ms. Allocated memory was 60.8 MB in the beginning and 75.5 MB in the end (delta: 14.7 MB). Free memory was 34.5 MB in the beginning and 53.1 MB in the end (delta: -18.5 MB). Peak memory consumption was 13.6 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 2795.56 ms. Allocated memory was 75.5 MB in the beginning and 119.5 MB in the end (delta: 44.0 MB). Free memory was 52.8 MB in the beginning and 77.1 MB in the end (delta: -24.3 MB). Peak memory consumption was 19.4 MB. Max. memory is 16.1 GB. * Witness Printer took 2.36 ms. Allocated memory is still 119.5 MB. Free memory is still 77.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * 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 2 * s + unknown-#length-unknown[__builtin_alloca(length * sizeof(char))] and consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.7s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 2.4s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. 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: 9 SDtfs, 11 SDslu, 4 SDs, 0 SdLazy, 13 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 14.7ms Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital152 mio100 ax100 hnf100 lsp96 ukn86 mio100 lsp36 div150 bol100 ite100 ukn100 eq155 hnf73 smp100 dnf784 smp27 tf100 neg95 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 37ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-08-27 14:31:54,216 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...