./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-15/array19_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/array19_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 aa6cff6feccdb2381551a0fc75acd9b1bca020b197764a63cc88475a7ca62ebf --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-13 03:23:34,380 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 03:23:34,382 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 03:23:34,406 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 03:23:34,406 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 03:23:34,407 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 03:23:34,408 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 03:23:34,409 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 03:23:34,410 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 03:23:34,411 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 03:23:34,412 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 03:23:34,412 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 03:23:34,413 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 03:23:34,413 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 03:23:34,414 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 03:23:34,415 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 03:23:34,416 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 03:23:34,416 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 03:23:34,418 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 03:23:34,420 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 03:23:34,421 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 03:23:34,421 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 03:23:34,424 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 03:23:34,425 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 03:23:34,429 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 03:23:34,433 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 03:23:34,435 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 03:23:34,436 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 03:23:34,436 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 03:23:34,437 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 03:23:34,437 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 03:23:34,439 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 03:23:34,439 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 03:23:34,440 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 03:23:34,441 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 03:23:34,443 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 03:23:34,443 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 03:23:34,443 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 03:23:34,444 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 03:23:34,444 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 03:23:34,444 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 03:23:34,446 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 03:23:34,447 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2022-07-13 03:23:34,464 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 03:23:34,464 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 03:23:34,464 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 03:23:34,464 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 03:23:34,465 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 03:23:34,465 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 03:23:34,466 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 03:23:34,466 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-07-13 03:23:34,466 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-07-13 03:23:34,466 INFO L138 SettingsManager]: * Use old map elimination=false [2022-07-13 03:23:34,467 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-07-13 03:23:34,467 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-07-13 03:23:34,467 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-07-13 03:23:34,467 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 03:23:34,467 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-13 03:23:34,467 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 03:23:34,468 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 03:23:34,468 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-07-13 03:23:34,468 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-07-13 03:23:34,469 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-07-13 03:23:34,469 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 03:23:34,469 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-07-13 03:23:34,469 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 03:23:34,469 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-07-13 03:23:34,469 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 03:23:34,469 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 03:23:34,470 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 03:23:34,470 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 03:23:34,470 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-07-13 03:23:34,470 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aa6cff6feccdb2381551a0fc75acd9b1bca020b197764a63cc88475a7ca62ebf [2022-07-13 03:23:34,643 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 03:23:34,662 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 03:23:34,664 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 03:23:34,665 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 03:23:34,665 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 03:23:34,666 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-15/array19_alloca.i [2022-07-13 03:23:34,718 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2cc711b4d/efbccb5a4dfa4a2598346a219b88efc4/FLAG04330a35e [2022-07-13 03:23:35,100 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 03:23:35,100 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-15/array19_alloca.i [2022-07-13 03:23:35,108 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2cc711b4d/efbccb5a4dfa4a2598346a219b88efc4/FLAG04330a35e [2022-07-13 03:23:35,118 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2cc711b4d/efbccb5a4dfa4a2598346a219b88efc4 [2022-07-13 03:23:35,119 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 03:23:35,120 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 03:23:35,123 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 03:23:35,123 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 03:23:35,125 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 03:23:35,125 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 03:23:35" (1/1) ... [2022-07-13 03:23:35,126 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2869367e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:23:35, skipping insertion in model container [2022-07-13 03:23:35,126 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 03:23:35" (1/1) ... [2022-07-13 03:23:35,130 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 03:23:35,164 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 03:23:35,366 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 03:23:35,373 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 03:23:35,421 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 03:23:35,439 INFO L208 MainTranslator]: Completed translation [2022-07-13 03:23:35,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:23:35 WrapperNode [2022-07-13 03:23:35,441 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 03:23:35,442 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 03:23:35,442 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 03:23:35,442 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 03:23:35,453 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:23:35" (1/1) ... [2022-07-13 03:23:35,461 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:23:35" (1/1) ... [2022-07-13 03:23:35,473 INFO L137 Inliner]: procedures = 151, calls = 8, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 42 [2022-07-13 03:23:35,473 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 03:23:35,474 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 03:23:35,474 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 03:23:35,474 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 03:23:35,479 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:23:35" (1/1) ... [2022-07-13 03:23:35,479 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:23:35" (1/1) ... [2022-07-13 03:23:35,480 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:23:35" (1/1) ... [2022-07-13 03:23:35,480 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:23:35" (1/1) ... [2022-07-13 03:23:35,483 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:23:35" (1/1) ... [2022-07-13 03:23:35,485 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:23:35" (1/1) ... [2022-07-13 03:23:35,486 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:23:35" (1/1) ... [2022-07-13 03:23:35,487 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 03:23:35,487 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 03:23:35,487 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 03:23:35,488 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 03:23:35,488 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:23:35" (1/1) ... [2022-07-13 03:23:35,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:23:35,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:23:35,518 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 03:23:35,523 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 03:23:35,548 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-13 03:23:35,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 03:23:35,549 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 03:23:35,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 03:23:35,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 03:23:35,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 03:23:35,609 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 03:23:35,610 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 03:23:35,724 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 03:23:35,728 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 03:23:35,728 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-13 03:23:35,731 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 03:23:35 BoogieIcfgContainer [2022-07-13 03:23:35,732 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 03:23:35,733 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-07-13 03:23:35,734 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-07-13 03:23:35,736 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-07-13 03:23:35,737 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-13 03:23:35,737 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 13.07 03:23:35" (1/3) ... [2022-07-13 03:23:35,738 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@20f8f856 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.07 03:23:35, skipping insertion in model container [2022-07-13 03:23:35,738 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-13 03:23:35,738 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:23:35" (2/3) ... [2022-07-13 03:23:35,739 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@20f8f856 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.07 03:23:35, skipping insertion in model container [2022-07-13 03:23:35,739 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-13 03:23:35,739 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 03:23:35" (3/3) ... [2022-07-13 03:23:35,740 INFO L354 chiAutomizerObserver]: Analyzing ICFG array19_alloca.i [2022-07-13 03:23:35,778 INFO L255 stractBuchiCegarLoop]: Interprodecural is true [2022-07-13 03:23:35,778 INFO L256 stractBuchiCegarLoop]: Hoare is false [2022-07-13 03:23:35,779 INFO L257 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-07-13 03:23:35,779 INFO L258 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-07-13 03:23:35,779 INFO L259 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-07-13 03:23:35,779 INFO L260 stractBuchiCegarLoop]: Difference is false [2022-07-13 03:23:35,779 INFO L261 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-07-13 03:23:35,779 INFO L265 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-07-13 03:23:35,784 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 03:23:35,797 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 3 [2022-07-13 03:23:35,798 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-13 03:23:35,798 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-13 03:23:35,801 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2022-07-13 03:23:35,801 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-07-13 03:23:35,801 INFO L287 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-07-13 03:23:35,802 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 03:23:35,803 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 3 [2022-07-13 03:23:35,803 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-13 03:23:35,803 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-13 03:23:35,803 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2022-07-13 03:23:35,803 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-07-13 03:23:35,807 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 03:23:35,808 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 03:23:35,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:23:35,812 INFO L85 PathProgramCache]: Analyzing trace with hash 28695753, now seen corresponding path program 1 times [2022-07-13 03:23:35,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:23:35,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103365098] [2022-07-13 03:23:35,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:23:35,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:23:35,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:23:35,886 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:23:35,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:23:35,918 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:23:35,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:23:35,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1667, now seen corresponding path program 1 times [2022-07-13 03:23:35,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:23:35,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028584139] [2022-07-13 03:23:35,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:23:35,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:23:35,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:23:35,941 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:23:35,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:23:35,947 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:23:35,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:23:35,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1806815563, now seen corresponding path program 1 times [2022-07-13 03:23:35,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:23:35,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906425139] [2022-07-13 03:23:35,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:23:35,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:23:35,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:23:35,984 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:23:35,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:23:35,995 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:23:36,227 INFO L210 LassoAnalysis]: Preferences: [2022-07-13 03:23:36,228 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-13 03:23:36,228 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-13 03:23:36,228 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-13 03:23:36,228 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-13 03:23:36,228 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:23:36,228 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-13 03:23:36,228 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-13 03:23:36,229 INFO L133 ssoRankerPreferences]: Filename of dumped script: array19_alloca.i_Iteration1_Lasso [2022-07-13 03:23:36,229 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-13 03:23:36,229 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-13 03:23:36,244 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 03:23:36,249 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 03:23:36,256 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 03:23:36,259 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 03:23:36,358 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 03:23:36,360 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 03:23:36,363 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 03:23:36,365 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 03:23:36,508 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-13 03:23:36,511 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-13 03:23:36,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:23:36,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:23:36,516 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 03:23:36,517 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 03:23:36,519 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 03:23:36,525 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 03:23:36,526 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-13 03:23:36,526 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 03:23:36,526 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 03:23:36,526 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 03:23:36,528 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-13 03:23:36,528 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-13 03:23:36,543 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-13 03:23:36,561 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 03:23:36,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:23:36,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:23:36,562 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 03:23:36,563 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 03:23:36,565 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 03:23:36,570 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 03:23:36,571 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 03:23:36,571 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 03:23:36,571 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 03:23:36,573 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-07-13 03:23:36,573 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-07-13 03:23:36,583 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-13 03:23:36,605 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 03:23:36,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:23:36,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:23:36,617 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 03:23:36,618 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 03:23:36,619 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 03:23:36,627 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 03:23:36,628 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-13 03:23:36,628 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 03:23:36,628 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 03:23:36,628 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 03:23:36,629 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-13 03:23:36,629 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-13 03:23:36,650 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-13 03:23:36,669 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 03:23:36,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:23:36,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:23:36,670 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 03:23:36,672 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 03:23:36,673 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 03:23:36,680 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 03:23:36,681 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 03:23:36,681 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 03:23:36,681 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 03:23:36,688 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-07-13 03:23:36,688 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-07-13 03:23:36,704 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-13 03:23:36,736 INFO L443 ModelExtractionUtils]: Simplification made 9 calls to the SMT solver. [2022-07-13 03:23:36,736 INFO L444 ModelExtractionUtils]: 7 out of 22 variables were initially zero. Simplification set additionally 10 variables to zero. [2022-07-13 03:23:36,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:23:36,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:23:36,739 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 03:23:36,740 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 03:23:36,741 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-13 03:23:36,760 INFO L438 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2022-07-13 03:23:36,761 INFO L513 LassoAnalysis]: Proved termination. [2022-07-13 03:23:36,761 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 03:23:36,783 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 03:23:36,792 INFO L293 tatePredicateManager]: 2 out of 4 supporting invariants were superfluous and have been removed [2022-07-13 03:23:36,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:23:36,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:23:36,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-13 03:23:36,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 03:23:36,925 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 03:23:36,978 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 03:23:36,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:23:36,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-13 03:23:36,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 03:23:37,001 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 03:23:37,039 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 03:23:37,040 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 03:23:37,092 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 03:23:37,093 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 03:23:37,103 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 03:23:37,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 24 transitions. [2022-07-13 03:23:37,105 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 24 transitions. Stem has 5 letters. Loop has 2 letters. [2022-07-13 03:23:37,105 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:23:37,106 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 24 transitions. Stem has 7 letters. Loop has 2 letters. [2022-07-13 03:23:37,106 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:23:37,106 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 24 transitions. Stem has 5 letters. Loop has 4 letters. [2022-07-13 03:23:37,106 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:23:37,107 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 37 transitions. [2022-07-13 03:23:37,108 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2022-07-13 03:23:37,112 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 10 states and 13 transitions. [2022-07-13 03:23:37,113 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2022-07-13 03:23:37,113 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2022-07-13 03:23:37,114 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 13 transitions. [2022-07-13 03:23:37,114 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 03:23:37,114 INFO L369 hiAutomatonCegarLoop]: Abstraction has 10 states and 13 transitions. [2022-07-13 03:23:37,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 13 transitions. [2022-07-13 03:23:37,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2022-07-13 03:23:37,129 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 03:23:37,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 13 transitions. [2022-07-13 03:23:37,130 INFO L392 hiAutomatonCegarLoop]: Abstraction has 10 states and 13 transitions. [2022-07-13 03:23:37,130 INFO L374 stractBuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2022-07-13 03:23:37,130 INFO L287 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-07-13 03:23:37,130 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 13 transitions. [2022-07-13 03:23:37,131 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2022-07-13 03:23:37,131 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-13 03:23:37,131 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-13 03:23:37,131 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-13 03:23:37,131 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2022-07-13 03:23:37,131 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 03:23:37,132 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 + (1 + main_#t~mem209#1);havoc main_#t~mem209#1; 116#L374-2 [2022-07-13 03:23:37,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:23:37,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1806815505, now seen corresponding path program 1 times [2022-07-13 03:23:37,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:23:37,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468462258] [2022-07-13 03:23:37,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:23:37,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:23:37,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:23:37,185 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 03:23:37,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 03:23:37,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468462258] [2022-07-13 03:23:37,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468462258] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 03:23:37,186 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 03:23:37,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 03:23:37,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71003585] [2022-07-13 03:23:37,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 03:23:37,188 INFO L757 eck$LassoCheckResult]: stem already infeasible [2022-07-13 03:23:37,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:23:37,189 INFO L85 PathProgramCache]: Analyzing trace with hash 68, now seen corresponding path program 1 times [2022-07-13 03:23:37,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:23:37,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998937070] [2022-07-13 03:23:37,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:23:37,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:23:37,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:23:37,193 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:23:37,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:23:37,196 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:23:37,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 03:23:37,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 03:23:37,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-13 03:23:37,239 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 03:23:37,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 03:23:37,281 INFO L93 Difference]: Finished difference Result 11 states and 13 transitions. [2022-07-13 03:23:37,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 03:23:37,281 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 13 transitions. [2022-07-13 03:23:37,282 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2022-07-13 03:23:37,282 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 11 states and 13 transitions. [2022-07-13 03:23:37,282 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2022-07-13 03:23:37,282 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2022-07-13 03:23:37,282 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 13 transitions. [2022-07-13 03:23:37,282 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 03:23:37,282 INFO L369 hiAutomatonCegarLoop]: Abstraction has 11 states and 13 transitions. [2022-07-13 03:23:37,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 13 transitions. [2022-07-13 03:23:37,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 10. [2022-07-13 03:23:37,291 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 03:23:37,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2022-07-13 03:23:37,291 INFO L392 hiAutomatonCegarLoop]: Abstraction has 10 states and 12 transitions. [2022-07-13 03:23:37,291 INFO L374 stractBuchiCegarLoop]: Abstraction has 10 states and 12 transitions. [2022-07-13 03:23:37,291 INFO L287 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-07-13 03:23:37,291 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 12 transitions. [2022-07-13 03:23:37,292 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2022-07-13 03:23:37,292 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-13 03:23:37,292 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-13 03:23:37,292 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 03:23:37,292 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2022-07-13 03:23:37,292 INFO L752 eck$LassoCheckResult]: Stem: 145#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 146#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet205#1, main_#t~malloc206#1.base, main_#t~malloc206#1.offset, main_#t~nondet208#1, main_#t~post207#1, main_#t~mem209#1, main_~i~0#1, main_~j~0#1, main_~length~0#1, main_~arr~0#1.base, main_~arr~0#1.offset;havoc main_~i~0#1;havoc main_~j~0#1;main_~length~0#1 := main_#t~nondet205#1;havoc main_#t~nondet205#1; 151#L367 assume !(main_~length~0#1 < 1); 147#L367-2 call main_#t~malloc206#1.base, main_#t~malloc206#1.offset := #Ultimate.allocOnStack(4 * main_~length~0#1);main_~arr~0#1.base, main_~arr~0#1.offset := main_#t~malloc206#1.base, main_#t~malloc206#1.offset; 148#L369 assume !(main_~arr~0#1.base == 0 && main_~arr~0#1.offset == 0);main_~i~0#1 := 0; 149#L370-3 assume !!(main_~i~0#1 < main_~length~0#1);call write~int(main_#t~nondet208#1, main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet208#1; 152#L370-2 main_#t~post207#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post207#1;havoc main_#t~post207#1; 153#L370-3 assume !(main_~i~0#1 < main_~length~0#1); 150#L370-4 main_~j~0#1 := 0; 144#L374-2 [2022-07-13 03:23:37,292 INFO L754 eck$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 + (1 + main_#t~mem209#1);havoc main_#t~mem209#1; 144#L374-2 [2022-07-13 03:23:37,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:23:37,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1182969107, now seen corresponding path program 1 times [2022-07-13 03:23:37,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:23:37,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335403396] [2022-07-13 03:23:37,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:23:37,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:23:37,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:23:37,303 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:23:37,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:23:37,311 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:23:37,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:23:37,312 INFO L85 PathProgramCache]: Analyzing trace with hash 68, now seen corresponding path program 2 times [2022-07-13 03:23:37,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:23:37,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076922539] [2022-07-13 03:23:37,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:23:37,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:23:37,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:23:37,334 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:23:37,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:23:37,338 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:23:37,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:23:37,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1982663310, now seen corresponding path program 1 times [2022-07-13 03:23:37,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:23:37,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656545324] [2022-07-13 03:23:37,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:23:37,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:23:37,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:23:37,366 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:23:37,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:23:37,384 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:23:37,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 13.07 03:23:37 BoogieIcfgContainer [2022-07-13 03:23:37,562 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-07-13 03:23:37,562 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-13 03:23:37,562 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-13 03:23:37,563 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-13 03:23:37,563 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 03:23:35" (3/4) ... [2022-07-13 03:23:37,564 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2022-07-13 03:23:37,593 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-13 03:23:37,593 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-13 03:23:37,593 INFO L158 Benchmark]: Toolchain (without parser) took 2472.95ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 52.6MB in the beginning and 41.4MB in the end (delta: 11.1MB). Peak memory consumption was 28.9MB. Max. memory is 16.1GB. [2022-07-13 03:23:37,594 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 90.2MB. Free memory was 70.3MB in the beginning and 70.2MB in the end (delta: 42.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 03:23:37,594 INFO L158 Benchmark]: CACSL2BoogieTranslator took 318.85ms. Allocated memory is still 90.2MB. Free memory was 52.3MB in the beginning and 59.1MB in the end (delta: -6.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-13 03:23:37,594 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.57ms. Allocated memory is still 90.2MB. Free memory was 59.1MB in the beginning and 57.3MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 03:23:37,594 INFO L158 Benchmark]: Boogie Preprocessor took 12.83ms. Allocated memory is still 90.2MB. Free memory was 57.3MB in the beginning and 56.2MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 03:23:37,598 INFO L158 Benchmark]: RCFGBuilder took 245.32ms. Allocated memory is still 90.2MB. Free memory was 56.2MB in the beginning and 46.4MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-13 03:23:37,599 INFO L158 Benchmark]: BuchiAutomizer took 1828.83ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 46.4MB in the beginning and 43.4MB in the end (delta: 3.0MB). Peak memory consumption was 22.7MB. Max. memory is 16.1GB. [2022-07-13 03:23:37,599 INFO L158 Benchmark]: Witness Printer took 30.40ms. Allocated memory is still 109.1MB. Free memory was 43.0MB in the beginning and 41.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 03:23:37,600 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 90.2MB. Free memory was 70.3MB in the beginning and 70.2MB in the end (delta: 42.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 318.85ms. Allocated memory is still 90.2MB. Free memory was 52.3MB in the beginning and 59.1MB in the end (delta: -6.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.57ms. Allocated memory is still 90.2MB. Free memory was 59.1MB in the beginning and 57.3MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 12.83ms. Allocated memory is still 90.2MB. Free memory was 57.3MB in the beginning and 56.2MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 245.32ms. Allocated memory is still 90.2MB. Free memory was 56.2MB in the beginning and 46.4MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 1828.83ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 46.4MB in the beginning and 43.4MB in the end (delta: 3.0MB). Peak memory consumption was 22.7MB. Max. memory is 16.1GB. * Witness Printer took 30.40ms. Allocated memory is still 109.1MB. Free memory was 43.0MB in the beginning and 41.4MB in the end (delta: 1.6MB). 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 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, 0.1s 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: 21ms 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@38b3f6ff=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5f3d6051=2, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5f3d6051=0, NULL=1, \result=0, length=1, i=1, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@67fc1088=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTArraySubscriptExpression@6998360f=0, arr=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@775e73f5=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