./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-15/cstrlen_reverse_alloca.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_e61b768b-6d33-4b65-a1b6-9fc5b1d5dfb1/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_e61b768b-6d33-4b65-a1b6-9fc5b1d5dfb1/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e61b768b-6d33-4b65-a1b6-9fc5b1d5dfb1/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e61b768b-6d33-4b65-a1b6-9fc5b1d5dfb1/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-15/cstrlen_reverse_alloca.i -s /tmp/vcloud-vcloud-master/worker/run_dir_e61b768b-6d33-4b65-a1b6-9fc5b1d5dfb1/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e61b768b-6d33-4b65-a1b6-9fc5b1d5dfb1/bin/uautomizer --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 c00c2eb0cef5f2e9aa4da3a7cbfbf681617d72f6 ............................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-11-15 23:25:02,654 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 23:25:02,656 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 23:25:02,668 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 23:25:02,669 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 23:25:02,670 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 23:25:02,671 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 23:25:02,674 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 23:25:02,676 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 23:25:02,677 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 23:25:02,678 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 23:25:02,679 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 23:25:02,680 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 23:25:02,681 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 23:25:02,682 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 23:25:02,683 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 23:25:02,683 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 23:25:02,684 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 23:25:02,686 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 23:25:02,688 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 23:25:02,690 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 23:25:02,691 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 23:25:02,692 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 23:25:02,693 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 23:25:02,696 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 23:25:02,696 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 23:25:02,697 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 23:25:02,698 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 23:25:02,698 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 23:25:02,699 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 23:25:02,699 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 23:25:02,700 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 23:25:02,701 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 23:25:02,702 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 23:25:02,703 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 23:25:02,703 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 23:25:02,704 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 23:25:02,704 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 23:25:02,704 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 23:25:02,705 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 23:25:02,706 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 23:25:02,707 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e61b768b-6d33-4b65-a1b6-9fc5b1d5dfb1/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-11-15 23:25:02,725 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 23:25:02,726 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 23:25:02,727 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 23:25:02,727 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 23:25:02,727 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 23:25:02,728 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-15 23:25:02,728 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-15 23:25:02,728 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-15 23:25:02,728 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-15 23:25:02,729 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-15 23:25:02,729 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-15 23:25:02,729 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 23:25:02,729 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-15 23:25:02,730 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 23:25:02,730 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 23:25:02,730 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-15 23:25:02,730 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-15 23:25:02,731 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-15 23:25:02,731 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 23:25:02,731 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-15 23:25:02,731 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 23:25:02,732 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-15 23:25:02,732 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 23:25:02,732 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 23:25:02,732 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-15 23:25:02,733 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 23:25:02,733 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 23:25:02,733 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-15 23:25:02,734 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-15 23:25:02,734 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_e61b768b-6d33-4b65-a1b6-9fc5b1d5dfb1/bin/uautomizer 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 -> c00c2eb0cef5f2e9aa4da3a7cbfbf681617d72f6 [2019-11-15 23:25:02,764 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 23:25:02,775 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 23:25:02,779 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 23:25:02,781 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 23:25:02,781 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 23:25:02,782 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e61b768b-6d33-4b65-a1b6-9fc5b1d5dfb1/bin/uautomizer/../../sv-benchmarks/c/termination-15/cstrlen_reverse_alloca.i [2019-11-15 23:25:02,858 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e61b768b-6d33-4b65-a1b6-9fc5b1d5dfb1/bin/uautomizer/data/3fdf95a31/341816c85c22489eacae5d4f23442b35/FLAG1c4ab848f [2019-11-15 23:25:03,433 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 23:25:03,435 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e61b768b-6d33-4b65-a1b6-9fc5b1d5dfb1/sv-benchmarks/c/termination-15/cstrlen_reverse_alloca.i [2019-11-15 23:25:03,445 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e61b768b-6d33-4b65-a1b6-9fc5b1d5dfb1/bin/uautomizer/data/3fdf95a31/341816c85c22489eacae5d4f23442b35/FLAG1c4ab848f [2019-11-15 23:25:03,677 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e61b768b-6d33-4b65-a1b6-9fc5b1d5dfb1/bin/uautomizer/data/3fdf95a31/341816c85c22489eacae5d4f23442b35 [2019-11-15 23:25:03,681 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 23:25:03,682 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 23:25:03,684 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 23:25:03,684 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 23:25:03,688 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 23:25:03,689 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 11:25:03" (1/1) ... [2019-11-15 23:25:03,692 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d458b93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:25:03, skipping insertion in model container [2019-11-15 23:25:03,692 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 11:25:03" (1/1) ... [2019-11-15 23:25:03,700 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 23:25:03,750 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 23:25:04,212 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 23:25:04,225 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 23:25:04,311 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 23:25:04,390 INFO L192 MainTranslator]: Completed translation [2019-11-15 23:25:04,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:25:04 WrapperNode [2019-11-15 23:25:04,391 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 23:25:04,392 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 23:25:04,392 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 23:25:04,392 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 23:25:04,401 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:25:04" (1/1) ... [2019-11-15 23:25:04,417 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:25:04" (1/1) ... [2019-11-15 23:25:04,445 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 23:25:04,445 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 23:25:04,446 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 23:25:04,446 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 23:25:04,456 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:25:04" (1/1) ... [2019-11-15 23:25:04,464 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:25:04" (1/1) ... [2019-11-15 23:25:04,482 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:25:04" (1/1) ... [2019-11-15 23:25:04,483 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:25:04" (1/1) ... [2019-11-15 23:25:04,490 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:25:04" (1/1) ... [2019-11-15 23:25:04,495 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:25:04" (1/1) ... [2019-11-15 23:25:04,496 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:25:04" (1/1) ... [2019-11-15 23:25:04,499 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 23:25:04,499 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 23:25:04,500 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 23:25:04,500 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 23:25:04,501 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:25:04" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e61b768b-6d33-4b65-a1b6-9fc5b1d5dfb1/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:25:04,568 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-15 23:25:04,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-15 23:25:04,569 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-15 23:25:04,570 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-15 23:25:04,570 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 23:25:04,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 23:25:04,796 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 23:25:04,796 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-15 23:25:04,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:25:04 BoogieIcfgContainer [2019-11-15 23:25:04,797 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 23:25:04,798 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-15 23:25:04,798 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-15 23:25:04,802 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-15 23:25:04,803 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-15 23:25:04,804 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 15.11 11:25:03" (1/3) ... [2019-11-15 23:25:04,805 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1818a87c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.11 11:25:04, skipping insertion in model container [2019-11-15 23:25:04,805 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-15 23:25:04,805 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:25:04" (2/3) ... [2019-11-15 23:25:04,806 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1818a87c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.11 11:25:04, skipping insertion in model container [2019-11-15 23:25:04,806 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-15 23:25:04,806 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:25:04" (3/3) ... [2019-11-15 23:25:04,808 INFO L371 chiAutomizerObserver]: Analyzing ICFG cstrlen_reverse_alloca.i [2019-11-15 23:25:04,889 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-15 23:25:04,889 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-15 23:25:04,889 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-15 23:25:04,889 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 23:25:04,889 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 23:25:04,889 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-15 23:25:04,890 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 23:25:04,890 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-15 23:25:04,913 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states. [2019-11-15 23:25:04,949 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-15 23:25:04,951 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 23:25:04,952 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 23:25:04,959 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-11-15 23:25:04,959 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-15 23:25:04,959 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-15 23:25:04,959 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states. [2019-11-15 23:25:04,961 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-15 23:25:04,961 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 23:25:04,961 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 23:25:04,961 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-11-15 23:25:04,962 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-15 23:25:04,971 INFO L791 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0]; 3#L-1true havoc main_#res;havoc main_#t~nondet207, main_#t~malloc208.base, main_#t~malloc208.offset, main_#t~ret209, main_~length1~0, main_~nondetString1~0.base, main_~nondetString1~0.offset;main_~length1~0 := main_#t~nondet207;havoc main_#t~nondet207; 13#L373true assume !(main_~length1~0 < 1); 6#L373-2true call main_#t~malloc208.base, main_#t~malloc208.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc208.base, main_#t~malloc208.offset;call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset, 1);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1);cstrlen_#in~s.base, cstrlen_#in~s.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset;havoc cstrlen_#res;havoc cstrlen_#t~post206.base, cstrlen_#t~post206.offset, cstrlen_#t~mem205, cstrlen_~s.base, cstrlen_~s.offset, cstrlen_~p~0.base, cstrlen_~p~0.offset;cstrlen_~s.base, cstrlen_~s.offset := cstrlen_#in~s.base, cstrlen_#in~s.offset;cstrlen_~p~0.base, cstrlen_~p~0.offset := cstrlen_~s.base, cstrlen_~s.offset; 7#L367-3true [2019-11-15 23:25:04,971 INFO L793 eck$LassoCheckResult]: Loop: 7#L367-3true call cstrlen_#t~mem205 := read~int(cstrlen_~p~0.base, cstrlen_~p~0.offset, 1); 4#L367-1true assume !!(0 != cstrlen_#t~mem205);havoc cstrlen_#t~mem205;cstrlen_#t~post206.base, cstrlen_#t~post206.offset := cstrlen_~p~0.base, cstrlen_~p~0.offset;cstrlen_~p~0.base, cstrlen_~p~0.offset := cstrlen_#t~post206.base, cstrlen_#t~post206.offset - 1;havoc cstrlen_#t~post206.base, cstrlen_#t~post206.offset; 7#L367-3true [2019-11-15 23:25:04,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:25:04,978 INFO L82 PathProgramCache]: Analyzing trace with hash 925669, now seen corresponding path program 1 times [2019-11-15 23:25:04,987 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:25:04,987 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124583365] [2019-11-15 23:25:04,988 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:25:04,988 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:25:04,988 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:25:05,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:25:05,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:25:05,124 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 23:25:05,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:25:05,126 INFO L82 PathProgramCache]: Analyzing trace with hash 1414, now seen corresponding path program 1 times [2019-11-15 23:25:05,126 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:25:05,126 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557681516] [2019-11-15 23:25:05,126 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:25:05,127 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:25:05,127 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:25:05,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:25:05,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:25:05,141 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 23:25:05,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:25:05,143 INFO L82 PathProgramCache]: Analyzing trace with hash 889568362, now seen corresponding path program 1 times [2019-11-15 23:25:05,144 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:25:05,144 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219435420] [2019-11-15 23:25:05,144 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:25:05,144 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:25:05,145 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:25:05,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:25:05,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:25:05,206 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 23:25:05,517 WARN L191 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2019-11-15 23:25:05,621 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 23:25:05,622 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 23:25:05,622 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 23:25:05,622 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 23:25:05,622 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-11-15 23:25:05,623 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:25:05,623 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 23:25:05,623 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 23:25:05,623 INFO L131 ssoRankerPreferences]: Filename of dumped script: cstrlen_reverse_alloca.i_Iteration1_Lasso [2019-11-15 23:25:05,623 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 23:25:05,624 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 23:25:05,660 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:25:05,673 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:25:05,684 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:25:05,688 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:25:05,695 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:25:05,876 WARN L191 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 42 [2019-11-15 23:25:05,952 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:25:05,955 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:25:05,959 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:25:05,963 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:25:05,969 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:25:06,450 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 23:25:06,456 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-11-15 23:25:06,458 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-15 23:25:06,460 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 23:25:06,460 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-15 23:25:06,461 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 23:25:06,461 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 23:25:06,461 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 23:25:06,464 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-15 23:25:06,464 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-15 23:25:06,466 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 23:25:06,467 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-15 23:25:06,468 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 23:25:06,468 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 23:25:06,468 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 23:25:06,468 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 23:25:06,472 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-15 23:25:06,472 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-15 23:25:06,478 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 23:25:06,479 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-15 23:25:06,480 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 23:25:06,480 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-15 23:25:06,480 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 23:25:06,480 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 23:25:06,481 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 23:25:06,481 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-15 23:25:06,482 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-15 23:25:06,483 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 23:25:06,484 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-15 23:25:06,484 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 23:25:06,485 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 23:25:06,485 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 23:25:06,485 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 23:25:06,488 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-15 23:25:06,488 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-15 23:25:06,493 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 23:25:06,494 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-15 23:25:06,495 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 23:25:06,495 INFO L202 nArgumentSynthesizer]: 2 stem disjuncts [2019-11-15 23:25:06,495 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 23:25:06,495 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 23:25:06,503 INFO L400 nArgumentSynthesizer]: We have 8 Motzkin's Theorem applications. [2019-11-15 23:25:06,504 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-15 23:25:06,544 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 23:25:06,544 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-15 23:25:06,545 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 23:25:06,545 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 23:25:06,546 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 23:25:06,546 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 23:25:06,549 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-15 23:25:06,549 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-15 23:25:06,556 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 23:25:06,559 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-15 23:25:06,561 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 23:25:06,561 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 23:25:06,562 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 23:25:06,562 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 23:25:06,570 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-15 23:25:06,581 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-15 23:25:06,704 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-15 23:25:06,746 INFO L443 ModelExtractionUtils]: Simplification made 6 calls to the SMT solver. [2019-11-15 23:25:06,746 INFO L444 ModelExtractionUtils]: 21 out of 28 variables were initially zero. Simplification set additionally 4 variables to zero. [2019-11-15 23:25:06,748 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-15 23:25:06,750 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2019-11-15 23:25:06,750 INFO L510 LassoAnalysis]: Proved termination. [2019-11-15 23:25:06,751 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_cstrlen_~p~0.offset) = 2*ULTIMATE.start_cstrlen_~p~0.offset + 1 Supporting invariants [] [2019-11-15 23:25:06,766 INFO L297 tatePredicateManager]: 3 out of 3 supporting invariants were superfluous and have been removed [2019-11-15 23:25:06,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:25:06,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:25:06,818 INFO L256 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-15 23:25:06,820 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:25:06,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:25:06,837 INFO L256 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-15 23:25:06,838 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:25:06,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:25:06,876 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-15 23:25:06,878 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states. Second operand 3 states. [2019-11-15 23:25:06,947 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states.. Second operand 3 states. Result 23 states and 26 transitions. Complement of second has 5 states. [2019-11-15 23:25:06,948 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 [2019-11-15 23:25:06,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-15 23:25:06,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 17 transitions. [2019-11-15 23:25:06,953 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 4 letters. Loop has 2 letters. [2019-11-15 23:25:06,954 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 23:25:06,955 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 6 letters. Loop has 2 letters. [2019-11-15 23:25:06,955 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 23:25:06,955 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 4 letters. Loop has 4 letters. [2019-11-15 23:25:06,956 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 23:25:06,957 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 26 transitions. [2019-11-15 23:25:06,959 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-15 23:25:06,963 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 0 states and 0 transitions. [2019-11-15 23:25:06,964 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-15 23:25:06,965 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-15 23:25:06,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-15 23:25:06,966 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-15 23:25:06,966 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 23:25:06,966 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 23:25:06,966 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 23:25:06,967 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-15 23:25:06,967 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-15 23:25:06,967 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-15 23:25:06,967 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-15 23:25:06,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 15.11 11:25:06 BoogieIcfgContainer [2019-11-15 23:25:06,975 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-15 23:25:06,975 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 23:25:06,976 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 23:25:06,976 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 23:25:06,981 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:25:04" (3/4) ... [2019-11-15 23:25:06,986 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-15 23:25:06,986 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 23:25:06,990 INFO L168 Benchmark]: Toolchain (without parser) took 3305.46 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.0 MB). Free memory was 943.4 MB in the beginning and 904.9 MB in the end (delta: 38.5 MB). Peak memory consumption was 167.4 MB. Max. memory is 11.5 GB. [2019-11-15 23:25:06,991 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:25:06,992 INFO L168 Benchmark]: CACSL2BoogieTranslator took 707.49 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.0 MB). Free memory was 943.4 MB in the beginning and 1.1 GB in the end (delta: -160.4 MB). Peak memory consumption was 17.9 MB. Max. memory is 11.5 GB. [2019-11-15 23:25:06,993 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.26 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:25:06,994 INFO L168 Benchmark]: Boogie Preprocessor took 53.87 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: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. [2019-11-15 23:25:06,995 INFO L168 Benchmark]: RCFGBuilder took 298.19 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: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 11.5 GB. [2019-11-15 23:25:06,996 INFO L168 Benchmark]: BuchiAutomizer took 2176.83 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 904.9 MB in the end (delta: 169.7 MB). Peak memory consumption was 169.7 MB. Max. memory is 11.5 GB. [2019-11-15 23:25:06,997 INFO L168 Benchmark]: Witness Printer took 10.79 ms. Allocated memory is still 1.2 GB. Free memory is still 904.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:25:07,008 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 707.49 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.0 MB). Free memory was 943.4 MB in the beginning and 1.1 GB in the end (delta: -160.4 MB). Peak memory consumption was 17.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 53.26 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 53.87 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: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. * RCFGBuilder took 298.19 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: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 2176.83 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 904.9 MB in the end (delta: 169.7 MB). Peak memory consumption was 169.7 MB. Max. memory is 11.5 GB. * Witness Printer took 10.79 ms. Allocated memory is still 1.2 GB. Free memory is still 904.9 MB. There was no memory consumed. Max. memory is 11.5 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 * p + 1 and consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.1s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 1.8s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. 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, 9 SDslu, 4 SDs, 0 SdLazy, 5 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital120 mio100 ax100 hnf99 lsp94 ukn87 mio100 lsp49 div100 bol100 ite100 ukn100 eq193 hnf89 smp100 dnf100 smp100 tf100 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 50ms VariablesStem: 6 VariablesLoop: 3 DisjunctsStem: 2 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 8 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...