./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-15/array04_alloca.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-15/array04_alloca.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 1183c091737a27abb58fd8d0696c96a2bb1d5baea63debedec24831694536a86 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-14 15:04:03,922 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-14 15:04:03,924 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-14 15:04:03,959 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-14 15:04:03,959 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-14 15:04:03,960 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-14 15:04:03,962 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-14 15:04:03,967 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-14 15:04:03,968 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-14 15:04:03,972 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-14 15:04:03,973 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-14 15:04:03,975 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-14 15:04:03,975 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-14 15:04:03,977 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-14 15:04:03,979 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-14 15:04:03,981 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-14 15:04:03,982 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-14 15:04:03,984 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-14 15:04:03,985 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-14 15:04:03,990 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-14 15:04:03,992 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-14 15:04:03,993 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-14 15:04:03,994 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-14 15:04:03,994 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-14 15:04:03,996 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-14 15:04:04,000 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-14 15:04:04,000 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-14 15:04:04,000 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-14 15:04:04,001 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-14 15:04:04,001 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-14 15:04:04,002 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-14 15:04:04,002 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-14 15:04:04,004 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-14 15:04:04,004 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-14 15:04:04,005 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-14 15:04:04,005 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-14 15:04:04,006 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-14 15:04:04,006 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-14 15:04:04,006 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-14 15:04:04,007 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-14 15:04:04,007 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-14 15:04:04,009 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-14 15:04:04,011 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2022-07-14 15:04:04,048 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-14 15:04:04,048 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-14 15:04:04,049 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-14 15:04:04,049 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-14 15:04:04,050 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-14 15:04:04,050 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-14 15:04:04,051 INFO L138 SettingsManager]: * Use SBE=true [2022-07-14 15:04:04,051 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-07-14 15:04:04,051 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-07-14 15:04:04,052 INFO L138 SettingsManager]: * Use old map elimination=false [2022-07-14 15:04:04,052 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-07-14 15:04:04,052 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-07-14 15:04:04,052 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-07-14 15:04:04,052 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-14 15:04:04,053 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-14 15:04:04,053 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-14 15:04:04,054 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-14 15:04:04,054 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-07-14 15:04:04,054 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-07-14 15:04:04,054 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-07-14 15:04:04,055 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-14 15:04:04,055 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-07-14 15:04:04,055 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-14 15:04:04,055 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-07-14 15:04:04,055 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-14 15:04:04,056 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-14 15:04:04,056 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-14 15:04:04,056 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-14 15:04:04,057 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-07-14 15:04:04,057 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1183c091737a27abb58fd8d0696c96a2bb1d5baea63debedec24831694536a86 [2022-07-14 15:04:04,288 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-14 15:04:04,307 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-14 15:04:04,310 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-14 15:04:04,311 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-14 15:04:04,311 INFO L275 PluginConnector]: CDTParser initialized [2022-07-14 15:04:04,312 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-15/array04_alloca.i [2022-07-14 15:04:04,369 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88fd65bda/4cc81c91a79147dea1bfad22a268b098/FLAG0e8a8dcb9 [2022-07-14 15:04:04,788 INFO L306 CDTParser]: Found 1 translation units. [2022-07-14 15:04:04,789 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-15/array04_alloca.i [2022-07-14 15:04:04,799 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88fd65bda/4cc81c91a79147dea1bfad22a268b098/FLAG0e8a8dcb9 [2022-07-14 15:04:05,161 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88fd65bda/4cc81c91a79147dea1bfad22a268b098 [2022-07-14 15:04:05,163 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-14 15:04:05,164 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-14 15:04:05,165 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-14 15:04:05,165 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-14 15:04:05,168 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-14 15:04:05,168 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 03:04:05" (1/1) ... [2022-07-14 15:04:05,169 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d04b829 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 03:04:05, skipping insertion in model container [2022-07-14 15:04:05,169 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 03:04:05" (1/1) ... [2022-07-14 15:04:05,175 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-14 15:04:05,207 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-14 15:04:05,435 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 15:04:05,441 INFO L203 MainTranslator]: Completed pre-run [2022-07-14 15:04:05,471 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 15:04:05,496 INFO L208 MainTranslator]: Completed translation [2022-07-14 15:04:05,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 03:04:05 WrapperNode [2022-07-14 15:04:05,496 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-14 15:04:05,497 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-14 15:04:05,498 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-14 15:04:05,498 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-14 15:04:05,505 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 03:04:05" (1/1) ... [2022-07-14 15:04:05,524 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 03:04:05" (1/1) ... [2022-07-14 15:04:05,544 INFO L137 Inliner]: procedures = 151, calls = 8, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 42 [2022-07-14 15:04:05,545 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-14 15:04:05,546 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-14 15:04:05,546 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-14 15:04:05,546 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-14 15:04:05,553 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 03:04:05" (1/1) ... [2022-07-14 15:04:05,553 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 03:04:05" (1/1) ... [2022-07-14 15:04:05,564 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 03:04:05" (1/1) ... [2022-07-14 15:04:05,564 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 03:04:05" (1/1) ... [2022-07-14 15:04:05,573 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 03:04:05" (1/1) ... [2022-07-14 15:04:05,579 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 03:04:05" (1/1) ... [2022-07-14 15:04:05,580 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 03:04:05" (1/1) ... [2022-07-14 15:04:05,582 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-14 15:04:05,586 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-14 15:04:05,587 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-14 15:04:05,587 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-14 15:04:05,588 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 03:04:05" (1/1) ... [2022-07-14 15:04:05,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:04:05,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:04:05,625 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-14 15:04:05,629 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-07-14 15:04:05,666 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-14 15:04:05,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-14 15:04:05,666 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-14 15:04:05,666 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-14 15:04:05,666 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-14 15:04:05,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-14 15:04:05,720 INFO L234 CfgBuilder]: Building ICFG [2022-07-14 15:04:05,721 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-14 15:04:05,810 INFO L275 CfgBuilder]: Performing block encoding [2022-07-14 15:04:05,816 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-14 15:04:05,816 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-14 15:04:05,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 03:04:05 BoogieIcfgContainer [2022-07-14 15:04:05,818 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-14 15:04:05,819 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-07-14 15:04:05,819 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-07-14 15:04:05,822 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-07-14 15:04:05,822 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-14 15:04:05,823 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 14.07 03:04:05" (1/3) ... [2022-07-14 15:04:05,823 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@419dcd9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 14.07 03:04:05, skipping insertion in model container [2022-07-14 15:04:05,824 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-14 15:04:05,824 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 03:04:05" (2/3) ... [2022-07-14 15:04:05,824 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@419dcd9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 14.07 03:04:05, skipping insertion in model container [2022-07-14 15:04:05,824 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-14 15:04:05,824 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 03:04:05" (3/3) ... [2022-07-14 15:04:05,826 INFO L354 chiAutomizerObserver]: Analyzing ICFG array04_alloca.i [2022-07-14 15:04:05,871 INFO L255 stractBuchiCegarLoop]: Interprodecural is true [2022-07-14 15:04:05,871 INFO L256 stractBuchiCegarLoop]: Hoare is false [2022-07-14 15:04:05,871 INFO L257 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-07-14 15:04:05,871 INFO L258 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-07-14 15:04:05,872 INFO L259 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-07-14 15:04:05,872 INFO L260 stractBuchiCegarLoop]: Difference is false [2022-07-14 15:04:05,872 INFO L261 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-07-14 15:04:05,872 INFO L265 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-07-14 15:04:05,876 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 13 states, 12 states have (on average 1.5) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 15:04:05,902 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 3 [2022-07-14 15:04:05,902 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-14 15:04:05,902 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-14 15:04:05,907 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2022-07-14 15:04:05,907 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-07-14 15:04:05,907 INFO L287 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-07-14 15:04:05,908 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 13 states, 12 states have (on average 1.5) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 15:04:05,909 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 3 [2022-07-14 15:04:05,910 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-14 15:04:05,910 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-14 15:04:05,910 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2022-07-14 15:04:05,910 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-07-14 15:04:05,916 INFO L752 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 7#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet205#1, main_#t~malloc206#1.base, main_#t~malloc206#1.offset, main_#t~nondet208#1, main_#t~post207#1, main_#t~mem209#1, main_~i~0#1, main_~j~0#1, main_~length~0#1, main_~arr~0#1.base, main_~arr~0#1.offset;havoc main_~i~0#1;havoc main_~j~0#1;main_~length~0#1 := main_#t~nondet205#1;havoc main_#t~nondet205#1; 11#L367true assume !(main_~length~0#1 < 1); 8#L367-2true call main_#t~malloc206#1.base, main_#t~malloc206#1.offset := #Ultimate.allocOnStack(4 * main_~length~0#1);main_~arr~0#1.base, main_~arr~0#1.offset := main_#t~malloc206#1.base, main_#t~malloc206#1.offset; 5#L369true assume !(main_~arr~0#1.base == 0 && main_~arr~0#1.offset == 0);main_~i~0#1 := 0; 6#L370-3true [2022-07-14 15:04:05,916 INFO L754 eck$LassoCheckResult]: Loop: 6#L370-3true assume !!(main_~i~0#1 < main_~length~0#1);call write~int(main_#t~nondet208#1, main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet208#1; 12#L370-2true main_#t~post207#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post207#1;havoc main_#t~post207#1; 6#L370-3true [2022-07-14 15:04:05,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 15:04:05,947 INFO L85 PathProgramCache]: Analyzing trace with hash 28695753, now seen corresponding path program 1 times [2022-07-14 15:04:05,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 15:04:05,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750481947] [2022-07-14 15:04:05,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 15:04:05,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 15:04:06,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:04:06,077 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 15:04:06,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:04:06,123 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 15:04:06,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 15:04:06,127 INFO L85 PathProgramCache]: Analyzing trace with hash 1667, now seen corresponding path program 1 times [2022-07-14 15:04:06,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 15:04:06,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33165835] [2022-07-14 15:04:06,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 15:04:06,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 15:04:06,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:04:06,148 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 15:04:06,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:04:06,156 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 15:04:06,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 15:04:06,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1806815563, now seen corresponding path program 1 times [2022-07-14 15:04:06,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 15:04:06,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994921583] [2022-07-14 15:04:06,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 15:04:06,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 15:04:06,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:04:06,185 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 15:04:06,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:04:06,220 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 15:04:06,468 INFO L210 LassoAnalysis]: Preferences: [2022-07-14 15:04:06,469 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-14 15:04:06,469 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-14 15:04:06,470 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-14 15:04:06,470 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-14 15:04:06,470 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:04:06,470 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-14 15:04:06,470 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-14 15:04:06,470 INFO L133 ssoRankerPreferences]: Filename of dumped script: array04_alloca.i_Iteration1_Lasso [2022-07-14 15:04:06,471 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-14 15:04:06,471 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-14 15:04:06,487 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 15:04:06,493 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 15:04:06,497 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 15:04:06,500 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 15:04:06,644 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 15:04:06,647 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 15:04:06,650 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 15:04:06,654 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 15:04:06,826 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-14 15:04:06,830 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-14 15:04:06,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:04:06,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:04:06,835 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-14 15:04:06,852 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-14 15:04:06,860 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-14 15:04:06,860 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-14 15:04:06,860 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-14 15:04:06,861 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-14 15:04:06,861 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-14 15:04:06,863 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-14 15:04:06,863 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-14 15:04:06,866 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2022-07-14 15:04:06,867 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-14 15:04:06,884 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2022-07-14 15:04:06,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:04:06,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:04:06,887 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-14 15:04:06,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2022-07-14 15:04:06,898 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-14 15:04:06,905 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-14 15:04:06,906 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-14 15:04:06,906 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-14 15:04:06,906 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-14 15:04:06,909 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-07-14 15:04:06,909 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-07-14 15:04:06,921 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-14 15:04:06,948 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2022-07-14 15:04:06,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:04:06,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:04:06,950 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-14 15:04:06,956 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-14 15:04:06,962 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-14 15:04:06,963 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-14 15:04:06,963 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-14 15:04:06,963 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-14 15:04:06,963 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-14 15:04:06,964 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-14 15:04:06,964 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-14 15:04:06,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-07-14 15:04:06,979 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-14 15:04:06,998 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2022-07-14 15:04:06,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:04:06,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:04:07,000 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-14 15:04:07,006 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-14 15:04:07,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2022-07-14 15:04:07,013 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-14 15:04:07,014 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-14 15:04:07,014 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-14 15:04:07,014 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-14 15:04:07,022 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-07-14 15:04:07,023 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-07-14 15:04:07,045 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-14 15:04:07,077 INFO L443 ModelExtractionUtils]: Simplification made 9 calls to the SMT solver. [2022-07-14 15:04:07,077 INFO L444 ModelExtractionUtils]: 7 out of 22 variables were initially zero. Simplification set additionally 10 variables to zero. [2022-07-14 15:04:07,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:04:07,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:04:07,088 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-14 15:04:07,090 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2022-07-14 15:04:07,140 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-14 15:04:07,155 INFO L438 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2022-07-14 15:04:07,155 INFO L513 LassoAnalysis]: Proved termination. [2022-07-14 15:04:07,155 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select #length ULTIMATE.start_main_~arr~0#1.base)_1, ULTIMATE.start_main_~i~0#1) = 1*v_rep(select #length ULTIMATE.start_main_~arr~0#1.base)_1 - 2*ULTIMATE.start_main_~i~0#1 Supporting invariants [-2*ULTIMATE.start_main_~length~0#1 + 1*v_rep(select #length ULTIMATE.start_main_#t~malloc206#1.base)_1 >= 0] [2022-07-14 15:04:07,180 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2022-07-14 15:04:07,197 INFO L293 tatePredicateManager]: 2 out of 4 supporting invariants were superfluous and have been removed [2022-07-14 15:04:07,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 15:04:07,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 15:04:07,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-14 15:04:07,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 15:04:07,323 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-14 15:04:07,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 15:04:07,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-14 15:04:07,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 15:04:07,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 15:04:07,402 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.3 stem predicates 2 loop predicates [2022-07-14 15:04:07,404 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 13 states, 12 states have (on average 1.5) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 15:04:07,487 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 13 states, 12 states have (on average 1.5) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 27 states and 37 transitions. Complement of second has 10 states. [2022-07-14 15:04:07,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 3 stem states 2 non-accepting loop states 1 accepting loop states [2022-07-14 15:04:07,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 15:04:07,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 24 transitions. [2022-07-14 15:04:07,495 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 24 transitions. Stem has 5 letters. Loop has 2 letters. [2022-07-14 15:04:07,496 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 15:04:07,496 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 24 transitions. Stem has 7 letters. Loop has 2 letters. [2022-07-14 15:04:07,496 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 15:04:07,496 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 24 transitions. Stem has 5 letters. Loop has 4 letters. [2022-07-14 15:04:07,497 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 15:04:07,497 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 37 transitions. [2022-07-14 15:04:07,500 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2022-07-14 15:04:07,502 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 10 states and 13 transitions. [2022-07-14 15:04:07,503 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2022-07-14 15:04:07,503 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2022-07-14 15:04:07,504 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 13 transitions. [2022-07-14 15:04:07,504 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-14 15:04:07,504 INFO L369 hiAutomatonCegarLoop]: Abstraction has 10 states and 13 transitions. [2022-07-14 15:04:07,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 13 transitions. [2022-07-14 15:04:07,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2022-07-14 15:04:07,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 10 states have (on average 1.3) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 15:04:07,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 13 transitions. [2022-07-14 15:04:07,524 INFO L392 hiAutomatonCegarLoop]: Abstraction has 10 states and 13 transitions. [2022-07-14 15:04:07,524 INFO L374 stractBuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2022-07-14 15:04:07,524 INFO L287 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-07-14 15:04:07,525 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 13 transitions. [2022-07-14 15:04:07,525 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2022-07-14 15:04:07,525 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-14 15:04:07,525 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-14 15:04:07,526 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-14 15:04:07,526 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2022-07-14 15:04:07,526 INFO L752 eck$LassoCheckResult]: Stem: 117#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 118#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet205#1, main_#t~malloc206#1.base, main_#t~malloc206#1.offset, main_#t~nondet208#1, main_#t~post207#1, main_#t~mem209#1, main_~i~0#1, main_~j~0#1, main_~length~0#1, main_~arr~0#1.base, main_~arr~0#1.offset;havoc main_~i~0#1;havoc main_~j~0#1;main_~length~0#1 := main_#t~nondet205#1;havoc main_#t~nondet205#1; 123#L367 assume !(main_~length~0#1 < 1); 119#L367-2 call main_#t~malloc206#1.base, main_#t~malloc206#1.offset := #Ultimate.allocOnStack(4 * main_~length~0#1);main_~arr~0#1.base, main_~arr~0#1.offset := main_#t~malloc206#1.base, main_#t~malloc206#1.offset; 120#L369 assume !(main_~arr~0#1.base == 0 && main_~arr~0#1.offset == 0);main_~i~0#1 := 0; 121#L370-3 assume !(main_~i~0#1 < main_~length~0#1); 122#L370-4 main_~j~0#1 := 0; 116#L374-2 [2022-07-14 15:04:07,526 INFO L754 eck$LassoCheckResult]: Loop: 116#L374-2 assume !!(0 <= main_~j~0#1 && main_~j~0#1 < main_~length~0#1);call main_#t~mem209#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~j~0#1, 4);main_~j~0#1 := main_~j~0#1 + main_#t~mem209#1;havoc main_#t~mem209#1; 116#L374-2 [2022-07-14 15:04:07,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 15:04:07,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1806815505, now seen corresponding path program 1 times [2022-07-14 15:04:07,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 15:04:07,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410275259] [2022-07-14 15:04:07,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 15:04:07,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 15:04:07,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 15:04:07,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 15:04:07,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 15:04:07,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410275259] [2022-07-14 15:04:07,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410275259] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 15:04:07,596 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 15:04:07,597 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-14 15:04:07,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504660535] [2022-07-14 15:04:07,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 15:04:07,599 INFO L757 eck$LassoCheckResult]: stem already infeasible [2022-07-14 15:04:07,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 15:04:07,600 INFO L85 PathProgramCache]: Analyzing trace with hash 68, now seen corresponding path program 1 times [2022-07-14 15:04:07,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 15:04:07,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354078754] [2022-07-14 15:04:07,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 15:04:07,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 15:04:07,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:04:07,605 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 15:04:07,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:04:07,618 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 15:04:07,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 15:04:07,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-14 15:04:07,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-14 15:04:07,657 INFO L87 Difference]: Start difference. First operand 10 states and 13 transitions. cyclomatic complexity: 5 Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 15:04:07,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 15:04:07,684 INFO L93 Difference]: Finished difference Result 11 states and 13 transitions. [2022-07-14 15:04:07,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-14 15:04:07,685 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 13 transitions. [2022-07-14 15:04:07,688 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2022-07-14 15:04:07,689 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 11 states and 13 transitions. [2022-07-14 15:04:07,689 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2022-07-14 15:04:07,689 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2022-07-14 15:04:07,689 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 13 transitions. [2022-07-14 15:04:07,689 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-14 15:04:07,690 INFO L369 hiAutomatonCegarLoop]: Abstraction has 11 states and 13 transitions. [2022-07-14 15:04:07,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 13 transitions. [2022-07-14 15:04:07,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 10. [2022-07-14 15:04:07,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 10 states have (on average 1.2) internal successors, (12), 9 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 15:04:07,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2022-07-14 15:04:07,695 INFO L392 hiAutomatonCegarLoop]: Abstraction has 10 states and 12 transitions. [2022-07-14 15:04:07,695 INFO L374 stractBuchiCegarLoop]: Abstraction has 10 states and 12 transitions. [2022-07-14 15:04:07,695 INFO L287 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-07-14 15:04:07,695 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 12 transitions. [2022-07-14 15:04:07,698 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2022-07-14 15:04:07,698 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-14 15:04:07,701 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-14 15:04:07,702 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 15:04:07,702 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2022-07-14 15:04:07,702 INFO L752 eck$LassoCheckResult]: Stem: 145#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 146#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet205#1, main_#t~malloc206#1.base, main_#t~malloc206#1.offset, main_#t~nondet208#1, main_#t~post207#1, main_#t~mem209#1, main_~i~0#1, main_~j~0#1, main_~length~0#1, main_~arr~0#1.base, main_~arr~0#1.offset;havoc main_~i~0#1;havoc main_~j~0#1;main_~length~0#1 := main_#t~nondet205#1;havoc main_#t~nondet205#1; 151#L367 assume !(main_~length~0#1 < 1); 147#L367-2 call main_#t~malloc206#1.base, main_#t~malloc206#1.offset := #Ultimate.allocOnStack(4 * main_~length~0#1);main_~arr~0#1.base, main_~arr~0#1.offset := main_#t~malloc206#1.base, main_#t~malloc206#1.offset; 148#L369 assume !(main_~arr~0#1.base == 0 && main_~arr~0#1.offset == 0);main_~i~0#1 := 0; 149#L370-3 assume !!(main_~i~0#1 < main_~length~0#1);call write~int(main_#t~nondet208#1, main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet208#1; 152#L370-2 main_#t~post207#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post207#1;havoc main_#t~post207#1; 153#L370-3 assume !(main_~i~0#1 < main_~length~0#1); 150#L370-4 main_~j~0#1 := 0; 144#L374-2 [2022-07-14 15:04:07,703 INFO L754 eck$LassoCheckResult]: Loop: 144#L374-2 assume !!(0 <= main_~j~0#1 && main_~j~0#1 < main_~length~0#1);call main_#t~mem209#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~j~0#1, 4);main_~j~0#1 := main_~j~0#1 + main_#t~mem209#1;havoc main_#t~mem209#1; 144#L374-2 [2022-07-14 15:04:07,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 15:04:07,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1182969107, now seen corresponding path program 1 times [2022-07-14 15:04:07,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 15:04:07,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999872260] [2022-07-14 15:04:07,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 15:04:07,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 15:04:07,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:04:07,734 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 15:04:07,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:04:07,744 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 15:04:07,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 15:04:07,745 INFO L85 PathProgramCache]: Analyzing trace with hash 68, now seen corresponding path program 2 times [2022-07-14 15:04:07,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 15:04:07,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118364806] [2022-07-14 15:04:07,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 15:04:07,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 15:04:07,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:04:07,750 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 15:04:07,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:04:07,753 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 15:04:07,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 15:04:07,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1982663310, now seen corresponding path program 1 times [2022-07-14 15:04:07,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 15:04:07,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759401734] [2022-07-14 15:04:07,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 15:04:07,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 15:04:07,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:04:07,776 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 15:04:07,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:04:07,791 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 15:04:08,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 14.07 03:04:08 BoogieIcfgContainer [2022-07-14 15:04:08,047 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-07-14 15:04:08,047 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-14 15:04:08,048 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-14 15:04:08,048 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-14 15:04:08,048 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 03:04:05" (3/4) ... [2022-07-14 15:04:08,052 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2022-07-14 15:04:08,088 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-14 15:04:08,088 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-14 15:04:08,089 INFO L158 Benchmark]: Toolchain (without parser) took 2925.13ms. Allocated memory was 90.2MB in the beginning and 125.8MB in the end (delta: 35.7MB). Free memory was 50.5MB in the beginning and 42.9MB in the end (delta: 7.5MB). Peak memory consumption was 44.9MB. Max. memory is 16.1GB. [2022-07-14 15:04:08,090 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 90.2MB. Free memory is still 68.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-14 15:04:08,090 INFO L158 Benchmark]: CACSL2BoogieTranslator took 331.73ms. Allocated memory was 90.2MB in the beginning and 125.8MB in the end (delta: 35.7MB). Free memory was 50.2MB in the beginning and 94.1MB in the end (delta: -43.9MB). Peak memory consumption was 8.2MB. Max. memory is 16.1GB. [2022-07-14 15:04:08,091 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.52ms. Allocated memory is still 125.8MB. Free memory was 93.6MB in the beginning and 92.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-14 15:04:08,092 INFO L158 Benchmark]: Boogie Preprocessor took 39.60ms. Allocated memory is still 125.8MB. Free memory was 92.0MB in the beginning and 91.0MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-14 15:04:08,094 INFO L158 Benchmark]: RCFGBuilder took 231.67ms. Allocated memory is still 125.8MB. Free memory was 91.0MB in the beginning and 81.5MB in the end (delta: 9.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-14 15:04:08,095 INFO L158 Benchmark]: BuchiAutomizer took 2228.19ms. Allocated memory is still 125.8MB. Free memory was 81.5MB in the beginning and 44.4MB in the end (delta: 37.1MB). Peak memory consumption was 38.7MB. Max. memory is 16.1GB. [2022-07-14 15:04:08,095 INFO L158 Benchmark]: Witness Printer took 41.16ms. Allocated memory is still 125.8MB. Free memory was 44.4MB in the beginning and 42.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-14 15:04:08,096 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 90.2MB. Free memory is still 68.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 331.73ms. Allocated memory was 90.2MB in the beginning and 125.8MB in the end (delta: 35.7MB). Free memory was 50.2MB in the beginning and 94.1MB in the end (delta: -43.9MB). Peak memory consumption was 8.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.52ms. Allocated memory is still 125.8MB. Free memory was 93.6MB in the beginning and 92.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.60ms. Allocated memory is still 125.8MB. Free memory was 92.0MB in the beginning and 91.0MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 231.67ms. Allocated memory is still 125.8MB. Free memory was 91.0MB in the beginning and 81.5MB in the end (delta: 9.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 2228.19ms. Allocated memory is still 125.8MB. Free memory was 81.5MB in the beginning and 44.4MB in the end (delta: 37.1MB). Peak memory consumption was 38.7MB. Max. memory is 16.1GB. * Witness Printer took 41.16ms. Allocated memory is still 125.8MB. Free memory was 44.4MB in the beginning and 42.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * 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) and one nonterminating remainder module.One deterministic module has affine ranking function -2 * i + unknown-#length-unknown[arr] and consists of 7 locations. 1 modules have a trivial ranking function, the largest among these consists of 4 locations. The remainder module has 10 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.1s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 1.7s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 16 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 16 mSDsluCounter, 22 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 9 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 38 IncrementalHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 13 mSDtfsCounter, 38 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU1 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital99 mio100 ax100 hnf100 lsp93 ukn83 mio100 lsp61 div100 bol100 ite100 ukn100 eq166 hnf91 smp100 dnf100 smp100 tf100 neg100 sie102 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 36ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 374]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=1} State at position 1 is {j=0, arr=2, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7b9c0dfb=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@18728969=2, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@18728969=0, NULL=1, \result=0, length=1, i=1, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@1fe25d7b=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTArraySubscriptExpression@1f869ebb=0, arr=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7ce7f7d8=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 374]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L365] int i, j; [L366] int length = __VERIFIER_nondet_int(); [L367] COND FALSE !(length < 1) [L368] int *arr = __builtin_alloca(length*sizeof(int)); [L369] COND FALSE !(!arr) [L370] i=0 [L370] COND TRUE i