./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 6c24879c 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-?-6c24879 [2022-07-13 03:23:00,195 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 03:23:00,197 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 03:23:00,233 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 03:23:00,234 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 03:23:00,235 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 03:23:00,236 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 03:23:00,238 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 03:23:00,239 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 03:23:00,243 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 03:23:00,244 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 03:23:00,245 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 03:23:00,245 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 03:23:00,247 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 03:23:00,248 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 03:23:00,250 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 03:23:00,251 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 03:23:00,252 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 03:23:00,253 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 03:23:00,260 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 03:23:00,261 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 03:23:00,262 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 03:23:00,262 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 03:23:00,263 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 03:23:00,264 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 03:23:00,269 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 03:23:00,269 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 03:23:00,269 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 03:23:00,270 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 03:23:00,270 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 03:23:00,271 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 03:23:00,272 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 03:23:00,273 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 03:23:00,273 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 03:23:00,274 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 03:23:00,275 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 03:23:00,275 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 03:23:00,276 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 03:23:00,276 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 03:23:00,276 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 03:23:00,276 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 03:23:00,278 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 03:23:00,278 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2022-07-13 03:23:00,302 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 03:23:00,302 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 03:23:00,302 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 03:23:00,303 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 03:23:00,304 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 03:23:00,304 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 03:23:00,304 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 03:23:00,305 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-07-13 03:23:00,305 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-07-13 03:23:00,305 INFO L138 SettingsManager]: * Use old map elimination=false [2022-07-13 03:23:00,306 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-07-13 03:23:00,306 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-07-13 03:23:00,306 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-07-13 03:23:00,306 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 03:23:00,306 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-13 03:23:00,306 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 03:23:00,307 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 03:23:00,307 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-07-13 03:23:00,307 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-07-13 03:23:00,308 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-07-13 03:23:00,308 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 03:23:00,308 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-07-13 03:23:00,308 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 03:23:00,308 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-07-13 03:23:00,308 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 03:23:00,309 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 03:23:00,309 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 03:23:00,309 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 03:23:00,310 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-07-13 03:23:00,310 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1183c091737a27abb58fd8d0696c96a2bb1d5baea63debedec24831694536a86 [2022-07-13 03:23:00,465 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 03:23:00,490 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 03:23:00,493 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 03:23:00,494 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 03:23:00,494 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 03:23:00,495 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-15/array04_alloca.i [2022-07-13 03:23:00,555 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d08afa53a/c29d38068a724835b2dc066726595cc9/FLAGd06f94f60 [2022-07-13 03:23:00,948 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 03:23:00,949 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-15/array04_alloca.i [2022-07-13 03:23:00,957 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d08afa53a/c29d38068a724835b2dc066726595cc9/FLAGd06f94f60 [2022-07-13 03:23:01,353 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d08afa53a/c29d38068a724835b2dc066726595cc9 [2022-07-13 03:23:01,357 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 03:23:01,359 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 03:23:01,361 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 03:23:01,362 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 03:23:01,364 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 03:23:01,364 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 03:23:01" (1/1) ... [2022-07-13 03:23:01,365 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76c8b168 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:23:01, skipping insertion in model container [2022-07-13 03:23:01,365 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 03:23:01" (1/1) ... [2022-07-13 03:23:01,370 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 03:23:01,400 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 03:23:01,605 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 03:23:01,613 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 03:23:01,653 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 03:23:01,686 INFO L208 MainTranslator]: Completed translation [2022-07-13 03:23:01,686 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:23:01 WrapperNode [2022-07-13 03:23:01,686 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 03:23:01,687 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 03:23:01,687 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 03:23:01,688 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 03:23:01,694 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:23:01" (1/1) ... [2022-07-13 03:23:01,709 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:23:01" (1/1) ... [2022-07-13 03:23:01,722 INFO L137 Inliner]: procedures = 151, calls = 8, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 42 [2022-07-13 03:23:01,723 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 03:23:01,724 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 03:23:01,724 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 03:23:01,725 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 03:23:01,729 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:23:01" (1/1) ... [2022-07-13 03:23:01,730 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:23:01" (1/1) ... [2022-07-13 03:23:01,739 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:23:01" (1/1) ... [2022-07-13 03:23:01,740 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:23:01" (1/1) ... [2022-07-13 03:23:01,743 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:23:01" (1/1) ... [2022-07-13 03:23:01,745 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:23:01" (1/1) ... [2022-07-13 03:23:01,746 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:23:01" (1/1) ... [2022-07-13 03:23:01,747 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 03:23:01,747 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 03:23:01,748 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 03:23:01,748 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 03:23:01,749 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:23:01" (1/1) ... [2022-07-13 03:23:01,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:23:01,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:23:01,773 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) [2022-07-13 03:23:01,785 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 [2022-07-13 03:23:01,800 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-13 03:23:01,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 03:23:01,801 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 03:23:01,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 03:23:01,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 03:23:01,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 03:23:01,843 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 03:23:01,845 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 03:23:01,922 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 03:23:01,926 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 03:23:01,927 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-13 03:23:01,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 03:23:01 BoogieIcfgContainer [2022-07-13 03:23:01,928 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 03:23:01,934 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-07-13 03:23:01,934 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-07-13 03:23:01,949 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-07-13 03:23:01,950 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-13 03:23:01,950 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 13.07 03:23:01" (1/3) ... [2022-07-13 03:23:01,951 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@76719858 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.07 03:23:01, skipping insertion in model container [2022-07-13 03:23:01,951 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-13 03:23:01,951 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:23:01" (2/3) ... [2022-07-13 03:23:01,951 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@76719858 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.07 03:23:01, skipping insertion in model container [2022-07-13 03:23:01,951 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-13 03:23:01,952 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 03:23:01" (3/3) ... [2022-07-13 03:23:01,953 INFO L354 chiAutomizerObserver]: Analyzing ICFG array04_alloca.i [2022-07-13 03:23:01,997 INFO L255 stractBuchiCegarLoop]: Interprodecural is true [2022-07-13 03:23:01,997 INFO L256 stractBuchiCegarLoop]: Hoare is false [2022-07-13 03:23:01,997 INFO L257 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-07-13 03:23:01,998 INFO L258 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-07-13 03:23:01,998 INFO L259 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-07-13 03:23:01,998 INFO L260 stractBuchiCegarLoop]: Difference is false [2022-07-13 03:23:01,998 INFO L261 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-07-13 03:23:01,998 INFO L265 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-07-13 03:23:02,003 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) [2022-07-13 03:23:02,028 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 3 [2022-07-13 03:23:02,028 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-13 03:23:02,028 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-13 03:23:02,032 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2022-07-13 03:23:02,032 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-07-13 03:23:02,033 INFO L287 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-07-13 03:23:02,033 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) [2022-07-13 03:23:02,034 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 3 [2022-07-13 03:23:02,034 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-13 03:23:02,034 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-13 03:23:02,034 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2022-07-13 03:23:02,034 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-07-13 03:23:02,039 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 [2022-07-13 03:23:02,039 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 [2022-07-13 03:23:02,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:23:02,043 INFO L85 PathProgramCache]: Analyzing trace with hash 28695753, now seen corresponding path program 1 times [2022-07-13 03:23:02,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:23:02,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365843107] [2022-07-13 03:23:02,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:23:02,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:23:02,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:23:02,128 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:23:02,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:23:02,171 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:23:02,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:23:02,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1667, now seen corresponding path program 1 times [2022-07-13 03:23:02,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:23:02,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824507865] [2022-07-13 03:23:02,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:23:02,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:23:02,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:23:02,198 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:23:02,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:23:02,217 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:23:02,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:23:02,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1806815563, now seen corresponding path program 1 times [2022-07-13 03:23:02,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:23:02,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103038377] [2022-07-13 03:23:02,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:23:02,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:23:02,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:23:02,239 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:23:02,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:23:02,266 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:23:02,479 INFO L210 LassoAnalysis]: Preferences: [2022-07-13 03:23:02,480 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-13 03:23:02,480 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-13 03:23:02,480 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-13 03:23:02,480 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-13 03:23:02,480 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:23:02,480 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-13 03:23:02,481 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-13 03:23:02,481 INFO L133 ssoRankerPreferences]: Filename of dumped script: array04_alloca.i_Iteration1_Lasso [2022-07-13 03:23:02,481 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-13 03:23:02,481 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-13 03:23:02,497 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:23:02,501 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:23:02,509 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:23:02,512 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:23:02,613 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:23:02,615 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:23:02,618 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:23:02,621 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:23:02,768 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-13 03:23:02,772 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-13 03:23:02,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:23:02,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:23:02,784 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) [2022-07-13 03:23:02,786 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 [2022-07-13 03:23:02,788 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 [2022-07-13 03:23:02,794 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 03:23:02,794 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-13 03:23:02,795 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 03:23:02,795 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 03:23:02,795 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 03:23:02,797 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-13 03:23:02,797 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-13 03:23:02,810 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-13 03:23:02,827 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2022-07-13 03:23:02,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:23:02,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:23:02,828 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) [2022-07-13 03:23:02,829 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 [2022-07-13 03:23:02,834 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 [2022-07-13 03:23:02,840 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 03:23:02,840 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 03:23:02,840 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 03:23:02,840 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 03:23:02,842 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-07-13 03:23:02,843 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-07-13 03:23:02,851 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-13 03:23:02,867 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 [2022-07-13 03:23:02,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:23:02,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:23:02,869 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) [2022-07-13 03:23:02,869 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 [2022-07-13 03:23:02,871 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 [2022-07-13 03:23:02,876 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 03:23:02,876 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-13 03:23:02,876 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 03:23:02,876 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 03:23:02,876 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 03:23:02,877 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-13 03:23:02,877 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-13 03:23:02,887 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-13 03:23:02,905 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 [2022-07-13 03:23:02,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:23:02,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:23:02,906 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) [2022-07-13 03:23:02,907 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 [2022-07-13 03:23:02,908 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 [2022-07-13 03:23:02,914 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 03:23:02,914 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 03:23:02,914 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 03:23:02,914 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 03:23:02,920 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-07-13 03:23:02,921 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-07-13 03:23:02,936 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-13 03:23:02,965 INFO L443 ModelExtractionUtils]: Simplification made 9 calls to the SMT solver. [2022-07-13 03:23:02,965 INFO L444 ModelExtractionUtils]: 7 out of 22 variables were initially zero. Simplification set additionally 10 variables to zero. [2022-07-13 03:23:02,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:23:02,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:23:02,968 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) [2022-07-13 03:23:02,969 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 [2022-07-13 03:23:02,970 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-13 03:23:02,979 INFO L438 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2022-07-13 03:23:02,979 INFO L513 LassoAnalysis]: Proved termination. [2022-07-13 03:23:02,980 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] [2022-07-13 03:23:02,998 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 [2022-07-13 03:23:03,018 INFO L293 tatePredicateManager]: 2 out of 4 supporting invariants were superfluous and have been removed [2022-07-13 03:23:03,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:23:03,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:23:03,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-13 03:23:03,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 03:23:03,132 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 [2022-07-13 03:23:03,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:23:03,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-13 03:23:03,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 03:23:03,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 03:23:03,241 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 [2022-07-13 03:23:03,242 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) [2022-07-13 03:23:03,318 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. [2022-07-13 03:23:03,319 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 [2022-07-13 03:23:03,324 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) [2022-07-13 03:23:03,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 24 transitions. [2022-07-13 03:23:03,326 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 24 transitions. Stem has 5 letters. Loop has 2 letters. [2022-07-13 03:23:03,327 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:23:03,327 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 24 transitions. Stem has 7 letters. Loop has 2 letters. [2022-07-13 03:23:03,327 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:23:03,328 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 24 transitions. Stem has 5 letters. Loop has 4 letters. [2022-07-13 03:23:03,328 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:23:03,328 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 37 transitions. [2022-07-13 03:23:03,332 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2022-07-13 03:23:03,335 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 10 states and 13 transitions. [2022-07-13 03:23:03,336 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2022-07-13 03:23:03,337 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2022-07-13 03:23:03,338 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 13 transitions. [2022-07-13 03:23:03,338 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 03:23:03,338 INFO L369 hiAutomatonCegarLoop]: Abstraction has 10 states and 13 transitions. [2022-07-13 03:23:03,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 13 transitions. [2022-07-13 03:23:03,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2022-07-13 03:23:03,356 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) [2022-07-13 03:23:03,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 13 transitions. [2022-07-13 03:23:03,358 INFO L392 hiAutomatonCegarLoop]: Abstraction has 10 states and 13 transitions. [2022-07-13 03:23:03,358 INFO L374 stractBuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2022-07-13 03:23:03,358 INFO L287 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-07-13 03:23:03,358 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 13 transitions. [2022-07-13 03:23:03,360 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2022-07-13 03:23:03,360 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-13 03:23:03,360 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-13 03:23:03,360 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-13 03:23:03,360 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2022-07-13 03:23:03,361 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 [2022-07-13 03:23:03,361 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 [2022-07-13 03:23:03,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:23:03,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1806815505, now seen corresponding path program 1 times [2022-07-13 03:23:03,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:23:03,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970678426] [2022-07-13 03:23:03,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:23:03,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:23:03,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:23:03,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 03:23:03,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 03:23:03,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970678426] [2022-07-13 03:23:03,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970678426] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 03:23:03,424 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 03:23:03,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 03:23:03,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846227034] [2022-07-13 03:23:03,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 03:23:03,426 INFO L757 eck$LassoCheckResult]: stem already infeasible [2022-07-13 03:23:03,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:23:03,427 INFO L85 PathProgramCache]: Analyzing trace with hash 68, now seen corresponding path program 1 times [2022-07-13 03:23:03,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:23:03,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996494831] [2022-07-13 03:23:03,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:23:03,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:23:03,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:23:03,433 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:23:03,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:23:03,440 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:23:03,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 03:23:03,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 03:23:03,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-13 03:23:03,471 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) [2022-07-13 03:23:03,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 03:23:03,488 INFO L93 Difference]: Finished difference Result 11 states and 13 transitions. [2022-07-13 03:23:03,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 03:23:03,489 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 13 transitions. [2022-07-13 03:23:03,491 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2022-07-13 03:23:03,491 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 11 states and 13 transitions. [2022-07-13 03:23:03,491 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2022-07-13 03:23:03,491 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2022-07-13 03:23:03,491 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 13 transitions. [2022-07-13 03:23:03,492 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 03:23:03,492 INFO L369 hiAutomatonCegarLoop]: Abstraction has 11 states and 13 transitions. [2022-07-13 03:23:03,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 13 transitions. [2022-07-13 03:23:03,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 10. [2022-07-13 03:23:03,493 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) [2022-07-13 03:23:03,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2022-07-13 03:23:03,493 INFO L392 hiAutomatonCegarLoop]: Abstraction has 10 states and 12 transitions. [2022-07-13 03:23:03,493 INFO L374 stractBuchiCegarLoop]: Abstraction has 10 states and 12 transitions. [2022-07-13 03:23:03,493 INFO L287 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-07-13 03:23:03,493 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 12 transitions. [2022-07-13 03:23:03,494 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2022-07-13 03:23:03,494 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-13 03:23:03,494 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-13 03:23:03,494 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 03:23:03,494 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2022-07-13 03:23:03,495 INFO L752 eck$LassoCheckResult]: Stem: 145#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 146#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet205#1, main_#t~malloc206#1.base, main_#t~malloc206#1.offset, main_#t~nondet208#1, main_#t~post207#1, main_#t~mem209#1, main_~i~0#1, main_~j~0#1, main_~length~0#1, main_~arr~0#1.base, main_~arr~0#1.offset;havoc main_~i~0#1;havoc main_~j~0#1;main_~length~0#1 := main_#t~nondet205#1;havoc main_#t~nondet205#1; 151#L367 assume !(main_~length~0#1 < 1); 147#L367-2 call main_#t~malloc206#1.base, main_#t~malloc206#1.offset := #Ultimate.allocOnStack(4 * main_~length~0#1);main_~arr~0#1.base, main_~arr~0#1.offset := main_#t~malloc206#1.base, main_#t~malloc206#1.offset; 148#L369 assume !(main_~arr~0#1.base == 0 && main_~arr~0#1.offset == 0);main_~i~0#1 := 0; 149#L370-3 assume !!(main_~i~0#1 < main_~length~0#1);call write~int(main_#t~nondet208#1, main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet208#1; 152#L370-2 main_#t~post207#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post207#1;havoc main_#t~post207#1; 153#L370-3 assume !(main_~i~0#1 < main_~length~0#1); 150#L370-4 main_~j~0#1 := 0; 144#L374-2 [2022-07-13 03:23:03,495 INFO L754 eck$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 [2022-07-13 03:23:03,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:23:03,495 INFO L85 PathProgramCache]: Analyzing trace with hash 1182969107, now seen corresponding path program 1 times [2022-07-13 03:23:03,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:23:03,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280939853] [2022-07-13 03:23:03,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:23:03,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:23:03,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:23:03,504 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:23:03,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:23:03,511 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:23:03,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:23:03,511 INFO L85 PathProgramCache]: Analyzing trace with hash 68, now seen corresponding path program 2 times [2022-07-13 03:23:03,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:23:03,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970514341] [2022-07-13 03:23:03,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:23:03,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:23:03,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:23:03,515 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:23:03,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:23:03,518 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:23:03,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:23:03,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1982663310, now seen corresponding path program 1 times [2022-07-13 03:23:03,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:23:03,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368930144] [2022-07-13 03:23:03,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:23:03,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:23:03,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:23:03,527 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:23:03,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:23:03,535 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:23:03,605 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2022-07-13 03:23:03,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 13.07 03:23:03 BoogieIcfgContainer [2022-07-13 03:23:03,739 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-07-13 03:23:03,740 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-13 03:23:03,740 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-13 03:23:03,740 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-13 03:23:03,740 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 03:23:01" (3/4) ... [2022-07-13 03:23:03,742 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2022-07-13 03:23:03,774 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-13 03:23:03,774 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-13 03:23:03,775 INFO L158 Benchmark]: Toolchain (without parser) took 2415.98ms. Allocated memory was 96.5MB in the beginning and 117.4MB in the end (delta: 21.0MB). Free memory was 62.7MB in the beginning and 79.5MB in the end (delta: -16.9MB). Peak memory consumption was 4.1MB. Max. memory is 16.1GB. [2022-07-13 03:23:03,775 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 96.5MB. Free memory was 51.1MB in the beginning and 51.0MB in the end (delta: 38.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 03:23:03,776 INFO L158 Benchmark]: CACSL2BoogieTranslator took 325.47ms. Allocated memory is still 96.5MB. Free memory was 62.3MB in the beginning and 65.0MB in the end (delta: -2.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-07-13 03:23:03,776 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.97ms. Allocated memory is still 96.5MB. Free memory was 65.0MB in the beginning and 63.3MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 03:23:03,776 INFO L158 Benchmark]: Boogie Preprocessor took 22.66ms. Allocated memory is still 96.5MB. Free memory was 63.3MB in the beginning and 62.1MB in the end (delta: 1.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-13 03:23:03,777 INFO L158 Benchmark]: RCFGBuilder took 180.65ms. Allocated memory is still 96.5MB. Free memory was 62.1MB in the beginning and 52.8MB in the end (delta: 9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-13 03:23:03,777 INFO L158 Benchmark]: BuchiAutomizer took 1805.66ms. Allocated memory was 96.5MB in the beginning and 117.4MB in the end (delta: 21.0MB). Free memory was 52.8MB in the beginning and 80.7MB in the end (delta: -27.9MB). Peak memory consumption was 40.6MB. Max. memory is 16.1GB. [2022-07-13 03:23:03,777 INFO L158 Benchmark]: Witness Printer took 34.51ms. Allocated memory is still 117.4MB. Free memory was 80.7MB in the beginning and 79.5MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 03:23:03,779 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 96.5MB. Free memory was 51.1MB in the beginning and 51.0MB in the end (delta: 38.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 325.47ms. Allocated memory is still 96.5MB. Free memory was 62.3MB in the beginning and 65.0MB in the end (delta: -2.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.97ms. Allocated memory is still 96.5MB. Free memory was 65.0MB in the beginning and 63.3MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 22.66ms. Allocated memory is still 96.5MB. Free memory was 63.3MB in the beginning and 62.1MB in the end (delta: 1.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 180.65ms. Allocated memory is still 96.5MB. Free memory was 62.1MB in the beginning and 52.8MB in the end (delta: 9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 1805.66ms. Allocated memory was 96.5MB in the beginning and 117.4MB in the end (delta: 21.0MB). Free memory was 52.8MB in the beginning and 80.7MB in the end (delta: -27.9MB). Peak memory consumption was 40.6MB. Max. memory is 16.1GB. * Witness Printer took 34.51ms. Allocated memory is still 117.4MB. Free memory was 80.7MB in the beginning and 79.5MB in the end (delta: 1.2MB). There was no memory consumed. 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 1.7s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 1.3s. 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: 23ms 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@79baa84b=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2a15e448=2, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2a15e448=0, NULL=1, \result=0, length=1, i=1, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@5d2a6d92=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTArraySubscriptExpression@46da3fb3=0, arr=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4c299ca=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