./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-15/cstrncat_mixed_alloca_true-termination.c.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version aa418289 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_6be4d80d-4a69-4c18-a056-85ada2014527/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_6be4d80d-4a69-4c18-a056-85ada2014527/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_6be4d80d-4a69-4c18-a056-85ada2014527/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_6be4d80d-4a69-4c18-a056-85ada2014527/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-15/cstrncat_mixed_alloca_true-termination.c.i -s /tmp/vcloud-vcloud-master/worker/working_dir_6be4d80d-4a69-4c18-a056-85ada2014527/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_6be4d80d-4a69-4c18-a056-85ada2014527/bin-2019/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 e5f2fff70da48a026b1d6e0ec73c6a0ad6755ace ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-aa41828 [2018-11-23 14:01:54,905 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 14:01:54,906 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 14:01:54,913 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 14:01:54,913 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 14:01:54,914 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 14:01:54,915 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 14:01:54,916 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 14:01:54,917 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 14:01:54,918 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 14:01:54,919 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 14:01:54,919 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 14:01:54,920 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 14:01:54,920 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 14:01:54,921 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 14:01:54,922 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 14:01:54,922 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 14:01:54,924 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 14:01:54,925 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 14:01:54,926 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 14:01:54,927 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 14:01:54,928 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 14:01:54,929 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 14:01:54,930 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 14:01:54,930 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 14:01:54,930 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 14:01:54,931 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 14:01:54,932 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 14:01:54,932 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 14:01:54,933 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 14:01:54,933 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 14:01:54,934 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 14:01:54,934 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 14:01:54,934 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 14:01:54,935 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 14:01:54,935 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 14:01:54,935 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_6be4d80d-4a69-4c18-a056-85ada2014527/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-11-23 14:01:54,946 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 14:01:54,947 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 14:01:54,948 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-23 14:01:54,948 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-23 14:01:54,948 INFO L133 SettingsManager]: * Use SBE=true [2018-11-23 14:01:54,948 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-23 14:01:54,948 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-23 14:01:54,948 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-23 14:01:54,949 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-23 14:01:54,949 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-23 14:01:54,949 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-23 14:01:54,949 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 14:01:54,949 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-23 14:01:54,949 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-23 14:01:54,950 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 14:01:54,950 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-23 14:01:54,950 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-23 14:01:54,950 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-23 14:01:54,950 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 14:01:54,950 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-23 14:01:54,950 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 14:01:54,951 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-23 14:01:54,951 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 14:01:54,951 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-23 14:01:54,951 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-23 14:01:54,951 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 14:01:54,951 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-23 14:01:54,952 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-23 14:01:54,952 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-23 14:01:54,953 INFO L133 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_6be4d80d-4a69-4c18-a056-85ada2014527/bin-2019/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 -> e5f2fff70da48a026b1d6e0ec73c6a0ad6755ace [2018-11-23 14:01:54,976 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 14:01:54,984 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 14:01:54,987 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 14:01:54,988 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 14:01:54,988 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 14:01:54,988 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_6be4d80d-4a69-4c18-a056-85ada2014527/bin-2019/uautomizer/../../sv-benchmarks/c/termination-15/cstrncat_mixed_alloca_true-termination.c.i [2018-11-23 14:01:55,027 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_6be4d80d-4a69-4c18-a056-85ada2014527/bin-2019/uautomizer/data/bd1b3c38a/f8dcb58e4c944025bfea9e0498360d7b/FLAG63c4a2d29 [2018-11-23 14:01:55,400 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 14:01:55,401 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_6be4d80d-4a69-4c18-a056-85ada2014527/sv-benchmarks/c/termination-15/cstrncat_mixed_alloca_true-termination.c.i [2018-11-23 14:01:55,406 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_6be4d80d-4a69-4c18-a056-85ada2014527/bin-2019/uautomizer/data/bd1b3c38a/f8dcb58e4c944025bfea9e0498360d7b/FLAG63c4a2d29 [2018-11-23 14:01:55,790 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_6be4d80d-4a69-4c18-a056-85ada2014527/bin-2019/uautomizer/data/bd1b3c38a/f8dcb58e4c944025bfea9e0498360d7b [2018-11-23 14:01:55,794 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 14:01:55,795 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 14:01:55,795 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 14:01:55,795 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 14:01:55,798 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 14:01:55,799 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:01:55" (1/1) ... [2018-11-23 14:01:55,801 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ed22b95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:01:55, skipping insertion in model container [2018-11-23 14:01:55,801 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:01:55" (1/1) ... [2018-11-23 14:01:55,809 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 14:01:55,839 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 14:01:56,049 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 14:01:56,057 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 14:01:56,093 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 14:01:56,179 INFO L195 MainTranslator]: Completed translation [2018-11-23 14:01:56,179 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:01:56 WrapperNode [2018-11-23 14:01:56,179 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 14:01:56,180 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 14:01:56,180 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 14:01:56,180 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 14:01:56,186 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:01:56" (1/1) ... [2018-11-23 14:01:56,196 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:01:56" (1/1) ... [2018-11-23 14:01:56,213 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 14:01:56,213 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 14:01:56,213 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 14:01:56,213 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 14:01:56,219 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:01:56" (1/1) ... [2018-11-23 14:01:56,220 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:01:56" (1/1) ... [2018-11-23 14:01:56,221 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:01:56" (1/1) ... [2018-11-23 14:01:56,222 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:01:56" (1/1) ... [2018-11-23 14:01:56,227 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:01:56" (1/1) ... [2018-11-23 14:01:56,231 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:01:56" (1/1) ... [2018-11-23 14:01:56,232 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:01:56" (1/1) ... [2018-11-23 14:01:56,234 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 14:01:56,234 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 14:01:56,234 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 14:01:56,234 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 14:01:56,235 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:01:56" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6be4d80d-4a69-4c18-a056-85ada2014527/bin-2019/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 [2018-11-23 14:01:56,283 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-23 14:01:56,283 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-23 14:01:56,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-23 14:01:56,284 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-23 14:01:56,284 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 14:01:56,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 14:01:56,470 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 14:01:56,471 INFO L280 CfgBuilder]: Removed 8 assue(true) statements. [2018-11-23 14:01:56,471 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:01:56 BoogieIcfgContainer [2018-11-23 14:01:56,471 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 14:01:56,472 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-23 14:01:56,472 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-23 14:01:56,475 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-23 14:01:56,476 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-23 14:01:56,476 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 23.11 02:01:55" (1/3) ... [2018-11-23 14:01:56,477 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@35612406 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.11 02:01:56, skipping insertion in model container [2018-11-23 14:01:56,477 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-23 14:01:56,477 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:01:56" (2/3) ... [2018-11-23 14:01:56,477 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@35612406 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.11 02:01:56, skipping insertion in model container [2018-11-23 14:01:56,477 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-23 14:01:56,477 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:01:56" (3/3) ... [2018-11-23 14:01:56,479 INFO L375 chiAutomizerObserver]: Analyzing ICFG cstrncat_mixed_alloca_true-termination.c.i [2018-11-23 14:01:56,526 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-23 14:01:56,526 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-23 14:01:56,526 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-23 14:01:56,526 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-23 14:01:56,527 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-23 14:01:56,527 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-23 14:01:56,527 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-23 14:01:56,527 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-23 14:01:56,527 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-23 14:01:56,537 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states. [2018-11-23 14:01:56,553 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 5 [2018-11-23 14:01:56,553 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 14:01:56,553 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 14:01:56,558 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2018-11-23 14:01:56,558 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-11-23 14:01:56,558 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-23 14:01:56,558 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states. [2018-11-23 14:01:56,560 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 5 [2018-11-23 14:01:56,560 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 14:01:56,560 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 14:01:56,560 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2018-11-23 14:01:56,560 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-11-23 14:01:56,566 INFO L794 eck$LassoCheckResult]: Stem: 13#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0]; 12#L-1true havoc main_#res;havoc main_#t~nondet213, main_#t~nondet214, main_#t~nondet215, main_#t~malloc216.base, main_#t~malloc216.offset, main_#t~malloc217.base, main_#t~malloc217.offset, main_#t~ret218.base, main_#t~ret218.offset, main_~length1~0, main_~length2~0, main_~n~0, main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;main_~length1~0 := main_#t~nondet213;havoc main_#t~nondet213;main_~length2~0 := main_#t~nondet214;havoc main_#t~nondet214;main_~n~0 := main_#t~nondet215;havoc main_#t~nondet215; 15#L381true assume !(main_~length1~0 < 1); 18#L381-2true assume !(main_~length2~0 < 1); 11#L384-1true assume !(main_~n~0 < 1); 6#L387-1true assume !(main_~length1~0 < main_~n~0 || main_~length1~0 - main_~n~0 < main_~length2~0);call main_#t~malloc216.base, main_#t~malloc216.offset := #Ultimate.alloc(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc216.base, main_#t~malloc216.offset;call main_#t~malloc217.base, main_#t~malloc217.offset := #Ultimate.alloc(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc217.base, main_#t~malloc217.offset;call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - main_~n~0 - 1), 1);call write~int(0, main_~nondetString2~0.base, main_~nondetString2~0.offset, 1);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_~nondetString2~0.base, main_~nondetString2~0.offset + (main_~length2~0 - 1);cstrncat_#in~s1.base, cstrncat_#in~s1.offset, cstrncat_#in~s2.base, cstrncat_#in~s2.offset, cstrncat_#in~n := main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset, main_~n~0;havoc cstrncat_#res.base, cstrncat_#res.offset;havoc cstrncat_#t~post206.base, cstrncat_#t~post206.offset, cstrncat_#t~mem205, cstrncat_#t~post210, cstrncat_#t~post211.base, cstrncat_#t~post211.offset, cstrncat_#t~post207.base, cstrncat_#t~post207.offset, cstrncat_#t~mem208, cstrncat_#t~short209, cstrncat_#t~mem212, cstrncat_~s1.base, cstrncat_~s1.offset, cstrncat_~s2.base, cstrncat_~s2.offset, cstrncat_~n, cstrncat_~s~0.base, cstrncat_~s~0.offset;cstrncat_~s1.base, cstrncat_~s1.offset := cstrncat_#in~s1.base, cstrncat_#in~s1.offset;cstrncat_~s2.base, cstrncat_~s2.offset := cstrncat_#in~s2.base, cstrncat_#in~s2.offset;cstrncat_~n := cstrncat_#in~n;cstrncat_~s~0.base, cstrncat_~s~0.offset := cstrncat_~s1.base, cstrncat_~s1.offset; 8#L367-3true [2018-11-23 14:01:56,566 INFO L796 eck$LassoCheckResult]: Loop: 8#L367-3true call cstrncat_#t~mem205 := read~int(cstrncat_~s~0.base, cstrncat_~s~0.offset, 1); 3#L367-1true assume !!(0 != cstrncat_#t~mem205);havoc cstrncat_#t~mem205;cstrncat_#t~post206.base, cstrncat_#t~post206.offset := cstrncat_~s~0.base, cstrncat_~s~0.offset;cstrncat_~s~0.base, cstrncat_~s~0.offset := cstrncat_#t~post206.base, 1 + cstrncat_#t~post206.offset;havoc cstrncat_#t~post206.base, cstrncat_#t~post206.offset; 8#L367-3true [2018-11-23 14:01:56,572 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 14:01:56,572 INFO L82 PathProgramCache]: Analyzing trace with hash 889572367, now seen corresponding path program 1 times [2018-11-23 14:01:56,573 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 14:01:56,574 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 14:01:56,607 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 14:01:56,608 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 14:01:56,608 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 14:01:56,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 14:01:56,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 14:01:56,693 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 14:01:56,694 INFO L82 PathProgramCache]: Analyzing trace with hash 1926, now seen corresponding path program 1 times [2018-11-23 14:01:56,694 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 14:01:56,694 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 14:01:56,695 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 14:01:56,695 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 14:01:56,695 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 14:01:56,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 14:01:56,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 14:01:56,705 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 14:01:56,705 INFO L82 PathProgramCache]: Analyzing trace with hash 180553748, now seen corresponding path program 1 times [2018-11-23 14:01:56,706 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 14:01:56,706 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 14:01:56,706 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 14:01:56,707 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 14:01:56,707 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 14:01:56,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 14:01:56,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 14:01:57,021 WARN L180 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 91 [2018-11-23 14:01:57,130 WARN L180 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2018-11-23 14:01:57,139 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 14:01:57,140 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 14:01:57,140 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 14:01:57,140 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 14:01:57,140 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-23 14:01:57,141 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 14:01:57,141 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 14:01:57,141 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 14:01:57,141 INFO L131 ssoRankerPreferences]: Filename of dumped script: cstrncat_mixed_alloca_true-termination.c.i_Iteration1_Lasso [2018-11-23 14:01:57,141 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 14:01:57,141 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 14:01:57,162 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 14:01:57,167 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 14:01:57,172 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 14:01:57,176 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 14:01:57,177 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 14:01:57,179 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 14:01:57,180 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 14:01:57,182 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 14:01:57,184 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 14:01:57,383 WARN L180 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 73 [2018-11-23 14:01:57,426 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 14:01:57,428 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 14:01:57,429 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 14:01:57,430 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 14:01:57,432 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 14:01:57,433 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 14:01:57,435 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 14:01:57,436 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 14:01:57,437 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 14:01:57,441 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 14:01:57,450 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 14:01:57,452 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 14:01:57,455 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 14:01:57,764 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 14:01:57,768 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-23 14:01:57,769 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-23 14:01:57,770 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 14:01:57,771 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 14:01:57,771 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 14:01:57,771 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 14:01:57,771 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 14:01:57,773 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 14:01:57,773 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 14:01:57,775 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 14:01:57,775 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-23 14:01:57,776 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 14:01:57,776 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 14:01:57,776 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 14:01:57,776 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 14:01:57,778 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-23 14:01:57,778 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-23 14:01:57,781 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 14:01:57,782 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-23 14:01:57,782 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 14:01:57,783 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 14:01:57,783 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 14:01:57,783 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 14:01:57,783 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 14:01:57,783 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 14:01:57,784 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 14:01:57,785 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 14:01:57,785 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-23 14:01:57,786 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 14:01:57,786 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 14:01:57,786 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 14:01:57,786 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 14:01:57,786 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 14:01:57,787 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 14:01:57,787 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 14:01:57,787 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 14:01:57,788 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-23 14:01:57,788 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 14:01:57,788 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 14:01:57,789 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 14:01:57,789 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 14:01:57,789 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 14:01:57,789 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 14:01:57,789 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 14:01:57,790 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 14:01:57,790 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-23 14:01:57,791 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 14:01:57,791 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 14:01:57,791 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 14:01:57,791 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 14:01:57,791 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 14:01:57,792 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 14:01:57,792 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 14:01:57,793 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 14:01:57,793 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-23 14:01:57,793 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 14:01:57,793 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 14:01:57,794 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 14:01:57,794 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 14:01:57,794 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 14:01:57,794 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 14:01:57,794 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 14:01:57,796 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 14:01:57,797 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-23 14:01:57,797 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 14:01:57,797 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 14:01:57,798 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 14:01:57,798 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 14:01:57,798 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 14:01:57,798 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 14:01:57,798 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 14:01:57,799 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 14:01:57,799 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-23 14:01:57,800 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 14:01:57,800 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 14:01:57,800 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 14:01:57,800 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 14:01:57,801 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-23 14:01:57,802 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-23 14:01:57,804 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 14:01:57,805 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-23 14:01:57,805 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 14:01:57,805 INFO L205 nArgumentSynthesizer]: 2 stem disjuncts [2018-11-23 14:01:57,806 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 14:01:57,806 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 14:01:57,808 INFO L402 nArgumentSynthesizer]: We have 8 Motzkin's Theorem applications. [2018-11-23 14:01:57,808 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-23 14:01:57,818 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 14:01:57,818 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-23 14:01:57,819 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 14:01:57,819 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 14:01:57,819 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 14:01:57,819 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 14:01:57,821 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-23 14:01:57,821 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-23 14:01:57,823 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 14:01:57,823 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-23 14:01:57,824 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 14:01:57,824 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 14:01:57,824 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 14:01:57,824 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 14:01:57,829 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-23 14:01:57,830 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-23 14:01:57,867 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-23 14:01:57,903 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2018-11-23 14:01:57,904 INFO L444 ModelExtractionUtils]: 49 out of 55 variables were initially zero. Simplification set additionally 3 variables to zero. [2018-11-23 14:01:57,906 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-23 14:01:57,907 INFO L440 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2018-11-23 14:01:57,907 INFO L518 LassoAnalysis]: Proved termination. [2018-11-23 14:01:57,908 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select #length ULTIMATE.start_main_#t~malloc216.base)_1, ULTIMATE.start_cstrncat_~s~0.offset) = 1*v_rep(select #length ULTIMATE.start_main_#t~malloc216.base)_1 - 1*ULTIMATE.start_cstrncat_~s~0.offset Supporting invariants [] [2018-11-23 14:01:57,937 INFO L297 tatePredicateManager]: 7 out of 8 supporting invariants were superfluous and have been removed [2018-11-23 14:01:57,943 WARN L1272 BoogieBacktranslator]: unknown boogie variable #length [2018-11-23 14:01:57,959 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 14:01:57,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 14:01:57,983 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 14:01:57,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 14:01:57,993 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 14:01:58,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 14:01:58,017 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 [2018-11-23 14:01:58,018 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states. Second operand 3 states. [2018-11-23 14:01:58,094 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states.. Second operand 3 states. Result 50 states and 73 transitions. Complement of second has 8 states. [2018-11-23 14:01:58,095 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 [2018-11-23 14:01:58,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-23 14:01:58,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 48 transitions. [2018-11-23 14:01:58,098 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 48 transitions. Stem has 6 letters. Loop has 2 letters. [2018-11-23 14:01:58,099 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 14:01:58,099 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 48 transitions. Stem has 8 letters. Loop has 2 letters. [2018-11-23 14:01:58,099 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 14:01:58,099 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 48 transitions. Stem has 6 letters. Loop has 4 letters. [2018-11-23 14:01:58,100 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 14:01:58,100 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 50 states and 73 transitions. [2018-11-23 14:01:58,102 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-23 14:01:58,105 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 50 states to 20 states and 27 transitions. [2018-11-23 14:01:58,106 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2018-11-23 14:01:58,106 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2018-11-23 14:01:58,106 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 27 transitions. [2018-11-23 14:01:58,107 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-23 14:01:58,107 INFO L705 BuchiCegarLoop]: Abstraction has 20 states and 27 transitions. [2018-11-23 14:01:58,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states and 27 transitions. [2018-11-23 14:01:58,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2018-11-23 14:01:58,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-11-23 14:01:58,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 26 transitions. [2018-11-23 14:01:58,128 INFO L728 BuchiCegarLoop]: Abstraction has 19 states and 26 transitions. [2018-11-23 14:01:58,128 INFO L608 BuchiCegarLoop]: Abstraction has 19 states and 26 transitions. [2018-11-23 14:01:58,128 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-23 14:01:58,128 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 19 states and 26 transitions. [2018-11-23 14:01:58,129 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-23 14:01:58,129 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 14:01:58,129 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 14:01:58,130 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 14:01:58,130 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-23 14:01:58,130 INFO L794 eck$LassoCheckResult]: Stem: 162#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0]; 157#L-1 havoc main_#res;havoc main_#t~nondet213, main_#t~nondet214, main_#t~nondet215, main_#t~malloc216.base, main_#t~malloc216.offset, main_#t~malloc217.base, main_#t~malloc217.offset, main_#t~ret218.base, main_#t~ret218.offset, main_~length1~0, main_~length2~0, main_~n~0, main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;main_~length1~0 := main_#t~nondet213;havoc main_#t~nondet213;main_~length2~0 := main_#t~nondet214;havoc main_#t~nondet214;main_~n~0 := main_#t~nondet215;havoc main_#t~nondet215; 158#L381 assume !(main_~length1~0 < 1); 163#L381-2 assume !(main_~length2~0 < 1); 173#L384-1 assume !(main_~n~0 < 1); 168#L387-1 assume !(main_~length1~0 < main_~n~0 || main_~length1~0 - main_~n~0 < main_~length2~0);call main_#t~malloc216.base, main_#t~malloc216.offset := #Ultimate.alloc(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc216.base, main_#t~malloc216.offset;call main_#t~malloc217.base, main_#t~malloc217.offset := #Ultimate.alloc(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc217.base, main_#t~malloc217.offset;call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - main_~n~0 - 1), 1);call write~int(0, main_~nondetString2~0.base, main_~nondetString2~0.offset, 1);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_~nondetString2~0.base, main_~nondetString2~0.offset + (main_~length2~0 - 1);cstrncat_#in~s1.base, cstrncat_#in~s1.offset, cstrncat_#in~s2.base, cstrncat_#in~s2.offset, cstrncat_#in~n := main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset, main_~n~0;havoc cstrncat_#res.base, cstrncat_#res.offset;havoc cstrncat_#t~post206.base, cstrncat_#t~post206.offset, cstrncat_#t~mem205, cstrncat_#t~post210, cstrncat_#t~post211.base, cstrncat_#t~post211.offset, cstrncat_#t~post207.base, cstrncat_#t~post207.offset, cstrncat_#t~mem208, cstrncat_#t~short209, cstrncat_#t~mem212, cstrncat_~s1.base, cstrncat_~s1.offset, cstrncat_~s2.base, cstrncat_~s2.offset, cstrncat_~n, cstrncat_~s~0.base, cstrncat_~s~0.offset;cstrncat_~s1.base, cstrncat_~s1.offset := cstrncat_#in~s1.base, cstrncat_#in~s1.offset;cstrncat_~s2.base, cstrncat_~s2.offset := cstrncat_#in~s2.base, cstrncat_#in~s2.offset;cstrncat_~n := cstrncat_#in~n;cstrncat_~s~0.base, cstrncat_~s~0.offset := cstrncat_~s1.base, cstrncat_~s1.offset; 169#L367-3 call cstrncat_#t~mem205 := read~int(cstrncat_~s~0.base, cstrncat_~s~0.offset, 1); 159#L367-1 assume !(0 != cstrncat_#t~mem205);havoc cstrncat_#t~mem205; 160#L369-4 cstrncat_#t~short209 := 0 != cstrncat_~n; 175#L369 assume !cstrncat_#t~short209; 171#L369-2 assume !!cstrncat_#t~short209;havoc cstrncat_#t~post207.base, cstrncat_#t~post207.offset;havoc cstrncat_#t~mem208;havoc cstrncat_#t~short209;cstrncat_#t~post210 := cstrncat_~n;cstrncat_~n := cstrncat_#t~post210 - 1;havoc cstrncat_#t~post210;cstrncat_#t~post211.base, cstrncat_#t~post211.offset := cstrncat_~s~0.base, cstrncat_~s~0.offset;cstrncat_~s~0.base, cstrncat_~s~0.offset := cstrncat_#t~post211.base, 1 + cstrncat_#t~post211.offset;havoc cstrncat_#t~post211.base, cstrncat_#t~post211.offset; 174#L369-4 cstrncat_#t~short209 := 0 != cstrncat_~n; 165#L369 [2018-11-23 14:01:58,130 INFO L796 eck$LassoCheckResult]: Loop: 165#L369 assume !cstrncat_#t~short209; 170#L369-2 assume !!cstrncat_#t~short209;havoc cstrncat_#t~post207.base, cstrncat_#t~post207.offset;havoc cstrncat_#t~mem208;havoc cstrncat_#t~short209;cstrncat_#t~post210 := cstrncat_~n;cstrncat_~n := cstrncat_#t~post210 - 1;havoc cstrncat_#t~post210;cstrncat_#t~post211.base, cstrncat_#t~post211.offset := cstrncat_~s~0.base, cstrncat_~s~0.offset;cstrncat_~s~0.base, cstrncat_~s~0.offset := cstrncat_#t~post211.base, 1 + cstrncat_#t~post211.offset;havoc cstrncat_#t~post211.base, cstrncat_#t~post211.offset; 164#L369-4 cstrncat_#t~short209 := 0 != cstrncat_~n; 165#L369 [2018-11-23 14:01:58,131 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 14:01:58,131 INFO L82 PathProgramCache]: Analyzing trace with hash 1662025132, now seen corresponding path program 1 times [2018-11-23 14:01:58,131 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 14:01:58,131 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 14:01:58,132 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 14:01:58,132 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 14:01:58,132 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 14:01:58,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 14:01:58,202 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 14:01:58,204 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 14:01:58,204 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-23 14:01:58,205 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-11-23 14:01:58,205 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 14:01:58,206 INFO L82 PathProgramCache]: Analyzing trace with hash 76643, now seen corresponding path program 1 times [2018-11-23 14:01:58,206 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 14:01:58,206 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 14:01:58,206 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 14:01:58,206 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 14:01:58,207 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 14:01:58,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 14:01:58,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 14:01:58,211 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 14:01:58,211 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-23 14:01:58,211 INFO L811 eck$LassoCheckResult]: loop already infeasible [2018-11-23 14:01:58,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 14:01:58,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 14:01:58,214 INFO L87 Difference]: Start difference. First operand 19 states and 26 transitions. cyclomatic complexity: 10 Second operand 3 states. [2018-11-23 14:01:58,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 14:01:58,223 INFO L93 Difference]: Finished difference Result 18 states and 22 transitions. [2018-11-23 14:01:58,224 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 14:01:58,224 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 18 states and 22 transitions. [2018-11-23 14:01:58,225 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-23 14:01:58,225 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 18 states to 0 states and 0 transitions. [2018-11-23 14:01:58,225 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-23 14:01:58,225 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-23 14:01:58,225 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-23 14:01:58,225 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-23 14:01:58,225 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 14:01:58,225 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 14:01:58,226 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 14:01:58,226 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-23 14:01:58,226 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-11-23 14:01:58,226 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-23 14:01:58,226 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-11-23 14:01:58,230 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 23.11 02:01:58 BoogieIcfgContainer [2018-11-23 14:01:58,230 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-23 14:01:58,231 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-23 14:01:58,231 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-23 14:01:58,231 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-23 14:01:58,231 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:01:56" (3/4) ... [2018-11-23 14:01:58,233 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-23 14:01:58,234 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-23 14:01:58,234 INFO L168 Benchmark]: Toolchain (without parser) took 2440.23 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 228.6 MB). Free memory was 958.1 MB in the beginning and 1.2 GB in the end (delta: -252.5 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 14:01:58,235 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 982.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 14:01:58,235 INFO L168 Benchmark]: CACSL2BoogieTranslator took 384.21 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.0 MB). Free memory was 958.1 MB in the beginning and 1.1 GB in the end (delta: -179.5 MB). Peak memory consumption was 33.1 MB. Max. memory is 11.5 GB. [2018-11-23 14:01:58,236 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.28 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: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 11.5 GB. [2018-11-23 14:01:58,236 INFO L168 Benchmark]: Boogie Preprocessor took 20.83 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. [2018-11-23 14:01:58,236 INFO L168 Benchmark]: RCFGBuilder took 236.89 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. [2018-11-23 14:01:58,237 INFO L168 Benchmark]: BuchiAutomizer took 1758.75 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 77.6 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -101.2 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 14:01:58,237 INFO L168 Benchmark]: Witness Printer took 3.06 ms. Allocated memory is still 1.3 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 14:01:58,239 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 982.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 384.21 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.0 MB). Free memory was 958.1 MB in the beginning and 1.1 GB in the end (delta: -179.5 MB). Peak memory consumption was 33.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 33.28 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: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 20.83 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 236.89 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 1758.75 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 77.6 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -101.2 MB). There was no memory consumed. Max. memory is 11.5 GB. * Witness Printer took 3.06 ms. Allocated memory is still 1.3 GB. Free memory is still 1.2 GB. 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 2 terminating modules (1 trivial, 1 deterministic, 0 nondeterministic). One deterministic module has affine ranking function unknown-#length-unknown[__builtin_alloca(length1 * sizeof(char))] + -1 * s and consists of 5 locations. 1 modules have a trivial ranking function, the largest among these consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.7s and 3 iterations. TraceHistogramMax:2. Analysis of lassos took 1.4s. 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 1. Automata minimization 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 19 states and ocurred in iteration 1. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 34 SDtfs, 35 SDslu, 20 SDs, 0 SdLazy, 19 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI1 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital201 mio100 ax100 hnf99 lsp96 ukn77 mio100 lsp53 div100 bol100 ite100 ukn100 eq192 hnf88 smp100 dnf100 smp100 tf100 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 13ms VariablesStem: 4 VariablesLoop: 0 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...