./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-libowfat/strchr-1.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_0f164b17-e829-49e8-a6e2-1c5d8c924ce4/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_0f164b17-e829-49e8-a6e2-1c5d8c924ce4/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_0f164b17-e829-49e8-a6e2-1c5d8c924ce4/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_0f164b17-e829-49e8-a6e2-1c5d8c924ce4/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-libowfat/strchr-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_0f164b17-e829-49e8-a6e2-1c5d8c924ce4/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_0f164b17-e829-49e8-a6e2-1c5d8c924ce4/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 eae91250bd54f01dff46ae6aab61c3076a74de3d ............................................................................................................................................................................................................................................................................................................................................................................................................. 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 22:42:41,800 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 22:42:41,802 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 22:42:41,815 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 22:42:41,815 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 22:42:41,817 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 22:42:41,818 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 22:42:41,827 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 22:42:41,831 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 22:42:41,835 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 22:42:41,837 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 22:42:41,838 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 22:42:41,839 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 22:42:41,840 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 22:42:41,841 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 22:42:41,842 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 22:42:41,843 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 22:42:41,843 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 22:42:41,846 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 22:42:41,849 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 22:42:41,852 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 22:42:41,853 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 22:42:41,856 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 22:42:41,857 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 22:42:41,860 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 22:42:41,860 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 22:42:41,860 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 22:42:41,861 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 22:42:41,862 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 22:42:41,862 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 22:42:41,863 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 22:42:41,863 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 22:42:41,864 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 22:42:41,864 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 22:42:41,866 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 22:42:41,866 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 22:42:41,867 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 22:42:41,867 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 22:42:41,867 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 22:42:41,868 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 22:42:41,868 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 22:42:41,870 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_0f164b17-e829-49e8-a6e2-1c5d8c924ce4/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-11-15 22:42:41,895 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 22:42:41,905 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 22:42:41,907 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 22:42:41,907 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 22:42:41,907 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 22:42:41,907 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-15 22:42:41,908 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-15 22:42:41,908 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-15 22:42:41,908 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-15 22:42:41,908 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-15 22:42:41,909 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-15 22:42:41,909 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 22:42:41,909 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-15 22:42:41,909 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 22:42:41,909 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 22:42:41,910 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-15 22:42:41,910 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-15 22:42:41,910 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-15 22:42:41,911 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 22:42:41,911 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-15 22:42:41,911 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 22:42:41,912 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-15 22:42:41,912 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 22:42:41,912 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 22:42:41,912 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-15 22:42:41,913 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 22:42:41,913 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 22:42:41,913 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-15 22:42:41,914 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-15 22:42:41,916 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_0f164b17-e829-49e8-a6e2-1c5d8c924ce4/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 -> eae91250bd54f01dff46ae6aab61c3076a74de3d [2019-11-15 22:42:41,940 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 22:42:41,950 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 22:42:41,953 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 22:42:41,954 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 22:42:41,955 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 22:42:41,956 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_0f164b17-e829-49e8-a6e2-1c5d8c924ce4/bin/uautomizer/../../sv-benchmarks/c/termination-libowfat/strchr-1.i [2019-11-15 22:42:42,010 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0f164b17-e829-49e8-a6e2-1c5d8c924ce4/bin/uautomizer/data/10caea11e/971eb98d71de492ba78e9577ae8d5947/FLAG8ad88df2e [2019-11-15 22:42:42,489 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 22:42:42,490 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_0f164b17-e829-49e8-a6e2-1c5d8c924ce4/sv-benchmarks/c/termination-libowfat/strchr-1.i [2019-11-15 22:42:42,506 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0f164b17-e829-49e8-a6e2-1c5d8c924ce4/bin/uautomizer/data/10caea11e/971eb98d71de492ba78e9577ae8d5947/FLAG8ad88df2e [2019-11-15 22:42:42,825 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_0f164b17-e829-49e8-a6e2-1c5d8c924ce4/bin/uautomizer/data/10caea11e/971eb98d71de492ba78e9577ae8d5947 [2019-11-15 22:42:42,828 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 22:42:42,830 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 22:42:42,830 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 22:42:42,831 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 22:42:42,834 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 22:42:42,835 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 10:42:42" (1/1) ... [2019-11-15 22:42:42,838 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31a22a60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:42:42, skipping insertion in model container [2019-11-15 22:42:42,838 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 10:42:42" (1/1) ... [2019-11-15 22:42:42,845 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 22:42:42,877 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 22:42:43,215 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 22:42:43,226 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 22:42:43,292 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 22:42:43,358 INFO L192 MainTranslator]: Completed translation [2019-11-15 22:42:43,358 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:42:43 WrapperNode [2019-11-15 22:42:43,359 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 22:42:43,359 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 22:42:43,359 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 22:42:43,360 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 22:42:43,368 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:42:43" (1/1) ... [2019-11-15 22:42:43,392 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:42:43" (1/1) ... [2019-11-15 22:42:43,414 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 22:42:43,414 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 22:42:43,414 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 22:42:43,415 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 22:42:43,423 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:42:43" (1/1) ... [2019-11-15 22:42:43,423 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:42:43" (1/1) ... [2019-11-15 22:42:43,426 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:42:43" (1/1) ... [2019-11-15 22:42:43,426 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:42:43" (1/1) ... [2019-11-15 22:42:43,433 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:42:43" (1/1) ... [2019-11-15 22:42:43,437 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:42:43" (1/1) ... [2019-11-15 22:42:43,438 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:42:43" (1/1) ... [2019-11-15 22:42:43,441 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 22:42:43,441 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 22:42:43,442 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 22:42:43,442 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 22:42:43,457 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:42:43" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0f164b17-e829-49e8-a6e2-1c5d8c924ce4/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 22:42:43,528 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-15 22:42:43,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-15 22:42:43,529 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-15 22:42:43,529 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-15 22:42:43,529 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 22:42:43,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 22:42:43,921 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 22:42:43,921 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-15 22:42:43,922 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 10:42:43 BoogieIcfgContainer [2019-11-15 22:42:43,922 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 22:42:43,923 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-15 22:42:43,923 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-15 22:42:43,927 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-15 22:42:43,929 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-15 22:42:43,929 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 15.11 10:42:42" (1/3) ... [2019-11-15 22:42:43,931 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@22c8502a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.11 10:42:43, skipping insertion in model container [2019-11-15 22:42:43,931 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-15 22:42:43,931 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:42:43" (2/3) ... [2019-11-15 22:42:43,932 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@22c8502a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.11 10:42:43, skipping insertion in model container [2019-11-15 22:42:43,932 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-15 22:42:43,932 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 10:42:43" (3/3) ... [2019-11-15 22:42:43,935 INFO L371 chiAutomizerObserver]: Analyzing ICFG strchr-1.i [2019-11-15 22:42:43,988 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-15 22:42:43,988 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-15 22:42:43,988 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-15 22:42:43,989 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 22:42:43,989 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 22:42:43,989 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-15 22:42:43,989 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 22:42:43,989 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-15 22:42:44,002 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states. [2019-11-15 22:42:44,021 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2019-11-15 22:42:44,021 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 22:42:44,022 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 22:42:44,028 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-11-15 22:42:44,028 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 22:42:44,028 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-15 22:42:44,029 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states. [2019-11-15 22:42:44,030 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2019-11-15 22:42:44,030 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 22:42:44,031 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 22:42:44,031 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-11-15 22:42:44,031 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 22:42:44,039 INFO L791 eck$LassoCheckResult]: Stem: 12#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0]; 9#L-1true havoc main_#res;havoc main_#t~nondet14, main_#t~malloc15.base, main_#t~malloc15.offset, main_#t~nondet16, main_#t~ret17.base, main_#t~ret17.offset, main_~in_len~0, main_~in~0.base, main_~in~0.offset, main_~the_int~0;main_~in_len~0 := main_#t~nondet14;havoc main_#t~nondet14; 14#L519true assume !(main_~in_len~0 < 1);call main_#t~malloc15.base, main_#t~malloc15.offset := #Ultimate.allocOnStack(main_~in_len~0);main_~in~0.base, main_~in~0.offset := main_#t~malloc15.base, main_#t~malloc15.offset;call write~int(0, main_~in~0.base, main_~in~0.offset + (main_~in_len~0 - 1), 1);main_~the_int~0 := main_#t~nondet16;havoc main_#t~nondet16;strchr_#in~t.base, strchr_#in~t.offset, strchr_#in~c := main_~in~0.base, main_~in~0.offset, main_~the_int~0;havoc strchr_#res.base, strchr_#res.offset;havoc strchr_#t~mem2, strchr_#t~mem3, strchr_#t~pre4.base, strchr_#t~pre4.offset, strchr_#t~mem5, strchr_#t~mem6, strchr_#t~pre7.base, strchr_#t~pre7.offset, strchr_#t~mem8, strchr_#t~mem9, strchr_#t~pre10.base, strchr_#t~pre10.offset, strchr_#t~mem11, strchr_#t~mem12, strchr_#t~pre13.base, strchr_#t~pre13.offset, strchr_~t.base, strchr_~t.offset, strchr_~c, strchr_~ch~0;strchr_~t.base, strchr_~t.offset := strchr_#in~t.base, strchr_#in~t.offset;strchr_~c := strchr_#in~c;havoc strchr_~ch~0;strchr_~ch~0 := (if strchr_~c % 256 <= 127 then strchr_~c % 256 else strchr_~c % 256 - 256); 17#L509-2true [2019-11-15 22:42:44,039 INFO L793 eck$LassoCheckResult]: Loop: 17#L509-2true assume !false;call strchr_#t~mem2 := read~int(strchr_~t.base, strchr_~t.offset, 1); 10#L510true assume !(strchr_#t~mem2 == strchr_~ch~0);havoc strchr_#t~mem2;call strchr_#t~mem3 := read~int(strchr_~t.base, strchr_~t.offset, 1); 16#L510-2true assume !(0 == strchr_#t~mem3);havoc strchr_#t~mem3;strchr_#t~pre4.base, strchr_#t~pre4.offset := strchr_~t.base, 1 + strchr_~t.offset;strchr_~t.base, strchr_~t.offset := strchr_~t.base, 1 + strchr_~t.offset;havoc strchr_#t~pre4.base, strchr_#t~pre4.offset;call strchr_#t~mem5 := read~int(strchr_~t.base, strchr_~t.offset, 1); 7#L511true assume !(strchr_#t~mem5 == strchr_~ch~0);havoc strchr_#t~mem5;call strchr_#t~mem6 := read~int(strchr_~t.base, strchr_~t.offset, 1); 13#L511-2true assume !(0 == strchr_#t~mem6);havoc strchr_#t~mem6;strchr_#t~pre7.base, strchr_#t~pre7.offset := strchr_~t.base, 1 + strchr_~t.offset;strchr_~t.base, strchr_~t.offset := strchr_~t.base, 1 + strchr_~t.offset;havoc strchr_#t~pre7.base, strchr_#t~pre7.offset;call strchr_#t~mem8 := read~int(strchr_~t.base, strchr_~t.offset, 1); 6#L512true assume !(strchr_#t~mem8 == strchr_~ch~0);havoc strchr_#t~mem8;call strchr_#t~mem9 := read~int(strchr_~t.base, strchr_~t.offset, 1); 11#L512-2true assume !(0 == strchr_#t~mem9);havoc strchr_#t~mem9;strchr_#t~pre10.base, strchr_#t~pre10.offset := strchr_~t.base, 1 + strchr_~t.offset;strchr_~t.base, strchr_~t.offset := strchr_~t.base, 1 + strchr_~t.offset;havoc strchr_#t~pre10.base, strchr_#t~pre10.offset;call strchr_#t~mem11 := read~int(strchr_~t.base, strchr_~t.offset, 1); 4#L513true assume !(strchr_#t~mem11 == strchr_~ch~0);havoc strchr_#t~mem11;call strchr_#t~mem12 := read~int(strchr_~t.base, strchr_~t.offset, 1); 8#L513-2true assume !(0 == strchr_#t~mem12);havoc strchr_#t~mem12;strchr_#t~pre13.base, strchr_#t~pre13.offset := strchr_~t.base, 1 + strchr_~t.offset;strchr_~t.base, strchr_~t.offset := strchr_~t.base, 1 + strchr_~t.offset;havoc strchr_#t~pre13.base, strchr_#t~pre13.offset; 17#L509-2true [2019-11-15 22:42:44,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:42:44,045 INFO L82 PathProgramCache]: Analyzing trace with hash 29860, now seen corresponding path program 1 times [2019-11-15 22:42:44,050 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:42:44,051 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406843824] [2019-11-15 22:42:44,051 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:42:44,051 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:42:44,051 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:42:44,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 22:42:44,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 22:42:44,183 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 22:42:44,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:42:44,185 INFO L82 PathProgramCache]: Analyzing trace with hash 563131458, now seen corresponding path program 1 times [2019-11-15 22:42:44,185 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:42:44,185 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108387592] [2019-11-15 22:42:44,185 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:42:44,186 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:42:44,186 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:42:44,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 22:42:44,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 22:42:44,232 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 22:42:44,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:42:44,234 INFO L82 PathProgramCache]: Analyzing trace with hash -208288001, now seen corresponding path program 1 times [2019-11-15 22:42:44,234 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:42:44,234 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183067217] [2019-11-15 22:42:44,234 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:42:44,235 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:42:44,235 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:42:44,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 22:42:44,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 22:42:44,330 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 22:42:44,660 WARN L191 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 74 [2019-11-15 22:42:44,922 WARN L191 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 68 [2019-11-15 22:42:45,147 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2019-11-15 22:42:45,158 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 22:42:45,159 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 22:42:45,159 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 22:42:45,159 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 22:42:45,159 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-11-15 22:42:45,160 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 22:42:45,160 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 22:42:45,160 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 22:42:45,160 INFO L131 ssoRankerPreferences]: Filename of dumped script: strchr-1.i_Iteration1_Lasso [2019-11-15 22:42:45,160 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 22:42:45,161 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 22:42:45,187 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 22:42:45,193 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 22:42:45,195 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 22:42:45,709 WARN L191 SmtUtils]: Spent 423.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2019-11-15 22:42:45,853 WARN L191 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2019-11-15 22:42:45,854 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 22:42:45,857 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 22:42:45,860 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 22:42:45,864 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 22:42:45,867 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 22:42:45,870 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 22:42:45,874 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 22:42:45,877 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 22:42:45,880 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 22:42:45,882 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 22:42:45,889 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 22:42:45,895 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 22:42:45,897 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 22:42:45,900 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 22:42:45,902 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 22:42:45,905 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 22:42:45,907 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 22:42:45,911 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 22:42:45,914 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 22:42:45,917 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 22:42:45,919 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 22:42:45,922 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 22:42:45,924 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 22:42:46,245 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 8 [2019-11-15 22:42:46,541 WARN L191 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 30 [2019-11-15 22:42:54,842 WARN L191 SmtUtils]: Spent 8.30 s on a formula simplification. DAG size of input: 295 DAG size of output: 185 [2019-11-15 22:42:54,974 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 22:42:54,978 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-11-15 22:42:54,980 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 22:42:54,982 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 22:42:54,984 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-15 22:42:54,988 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 22:42:54,988 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 22:42:54,988 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 22:42:54,990 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-15 22:42:54,991 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-15 22:42:54,993 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 22:42:54,996 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 22:42:54,997 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 22:42:54,997 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-15 22:42:54,997 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 22:42:54,998 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 22:42:54,998 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 22:42:55,006 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-15 22:42:55,007 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-15 22:42:55,009 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 22:42:55,010 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 22:42:55,010 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 22:42:55,011 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 22:42:55,011 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 22:42:55,011 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 22:42:55,014 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-15 22:42:55,014 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-15 22:42:55,028 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 22:42:55,029 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 22:42:55,030 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 22:42:55,030 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 22:42:55,030 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 22:42:55,030 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 22:42:55,035 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-15 22:42:55,035 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-15 22:42:55,088 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-15 22:42:55,115 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-15 22:42:55,115 INFO L444 ModelExtractionUtils]: 21 out of 25 variables were initially zero. Simplification set additionally 1 variables to zero. [2019-11-15 22:42:55,117 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-15 22:42:55,121 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2019-11-15 22:42:55,122 INFO L510 LassoAnalysis]: Proved termination. [2019-11-15 22:42:55,126 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_strchr_~t.offset, v_rep(select #length ULTIMATE.start_strchr_~t.base)_1) = -1*ULTIMATE.start_strchr_~t.offset + 1*v_rep(select #length ULTIMATE.start_strchr_~t.base)_1 Supporting invariants [] [2019-11-15 22:42:55,156 INFO L297 tatePredicateManager]: 10 out of 10 supporting invariants were superfluous and have been removed [2019-11-15 22:42:55,164 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2019-11-15 22:42:55,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:42:55,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:42:55,207 INFO L256 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-15 22:42:55,208 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 22:42:55,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:42:55,234 INFO L256 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 15 conjunts are in the unsatisfiable core [2019-11-15 22:42:55,238 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 22:42:55,342 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 22:42:55,358 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 5 loop predicates [2019-11-15 22:42:55,359 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states. Second operand 6 states. [2019-11-15 22:42:55,442 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states.. Second operand 6 states. Result 46 states and 62 transitions. Complement of second has 7 states. [2019-11-15 22:42:55,445 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-15 22:42:55,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-11-15 22:42:55,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 37 transitions. [2019-11-15 22:42:55,448 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 37 transitions. Stem has 3 letters. Loop has 9 letters. [2019-11-15 22:42:55,449 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 22:42:55,450 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 37 transitions. Stem has 12 letters. Loop has 9 letters. [2019-11-15 22:42:55,450 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 22:42:55,450 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 37 transitions. Stem has 3 letters. Loop has 18 letters. [2019-11-15 22:42:55,451 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 22:42:55,451 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 46 states and 62 transitions. [2019-11-15 22:42:55,460 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-15 22:42:55,463 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 46 states to 0 states and 0 transitions. [2019-11-15 22:42:55,464 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-15 22:42:55,464 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-15 22:42:55,465 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-15 22:42:55,465 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-15 22:42:55,466 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 22:42:55,466 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 22:42:55,466 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 22:42:55,466 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-15 22:42:55,466 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-15 22:42:55,466 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-15 22:42:55,466 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-15 22:42:55,474 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 15.11 10:42:55 BoogieIcfgContainer [2019-11-15 22:42:55,474 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-15 22:42:55,475 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 22:42:55,475 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 22:42:55,475 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 22:42:55,476 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 10:42:43" (3/4) ... [2019-11-15 22:42:55,479 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-15 22:42:55,479 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 22:42:55,481 INFO L168 Benchmark]: Toolchain (without parser) took 12651.00 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 369.6 MB). Free memory was 944.7 MB in the beginning and 935.0 MB in the end (delta: 9.8 MB). Peak memory consumption was 379.4 MB. Max. memory is 11.5 GB. [2019-11-15 22:42:55,481 INFO L168 Benchmark]: CDTParser took 0.27 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 22:42:55,482 INFO L168 Benchmark]: CACSL2BoogieTranslator took 528.41 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 123.2 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -162.6 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. [2019-11-15 22:42:55,483 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.83 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2019-11-15 22:42:55,484 INFO L168 Benchmark]: Boogie Preprocessor took 26.88 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: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. [2019-11-15 22:42:55,485 INFO L168 Benchmark]: RCFGBuilder took 481.09 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: 21.6 MB). Peak memory consumption was 21.6 MB. Max. memory is 11.5 GB. [2019-11-15 22:42:55,485 INFO L168 Benchmark]: BuchiAutomizer took 11551.81 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 246.4 MB). Free memory was 1.1 GB in the beginning and 935.0 MB in the end (delta: 142.2 MB). Peak memory consumption was 388.6 MB. Max. memory is 11.5 GB. [2019-11-15 22:42:55,486 INFO L168 Benchmark]: Witness Printer took 3.82 ms. Allocated memory is still 1.4 GB. Free memory is still 935.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 22:42:55,495 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 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 528.41 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 123.2 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -162.6 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 54.83 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 26.88 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: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 481.09 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: 21.6 MB). Peak memory consumption was 21.6 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 11551.81 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 246.4 MB). Free memory was 1.1 GB in the beginning and 935.0 MB in the end (delta: 142.2 MB). Peak memory consumption was 388.6 MB. Max. memory is 11.5 GB. * Witness Printer took 3.82 ms. Allocated memory is still 1.4 GB. Free memory is still 935.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #length * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 1 terminating modules (0 trivial, 1 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -1 * t + unknown-#length-unknown[t] and consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 11.4s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 11.1s. 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: 17 SDtfs, 22 SDslu, 17 SDs, 0 SdLazy, 17 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital290 mio100 ax100 hnf99 lsp77 ukn92 mio100 lsp42 div126 bol100 ite100 ukn100 eq168 hnf80 smp82 dnf6956 smp42 tf100 neg76 sie161 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 18ms VariablesStem: 2 VariablesLoop: 3 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...