./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-15/array16_alloca_original.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version e19ca921 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/array16_alloca_original.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 628be9b0d43b46482b2f1f32ff1648acbb8b41e569549b972a02e76fffda9076 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 19:55:11,999 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 19:55:12,001 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 19:55:12,021 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 19:55:12,022 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 19:55:12,023 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 19:55:12,023 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 19:55:12,024 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 19:55:12,025 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 19:55:12,026 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 19:55:12,027 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 19:55:12,027 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 19:55:12,028 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 19:55:12,028 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 19:55:12,029 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 19:55:12,030 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 19:55:12,030 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 19:55:12,031 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 19:55:12,031 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 19:55:12,033 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 19:55:12,033 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 19:55:12,034 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 19:55:12,035 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 19:55:12,035 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 19:55:12,037 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 19:55:12,037 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 19:55:12,037 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 19:55:12,038 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 19:55:12,038 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 19:55:12,039 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 19:55:12,039 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 19:55:12,040 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 19:55:12,040 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 19:55:12,041 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 19:55:12,041 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 19:55:12,041 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 19:55:12,042 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 19:55:12,042 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 19:55:12,042 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 19:55:12,043 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 19:55:12,043 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 19:55:12,044 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-12-22 19:55:12,057 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 19:55:12,059 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 19:55:12,059 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 19:55:12,059 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 19:55:12,060 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 19:55:12,060 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 19:55:12,061 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 19:55:12,061 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-22 19:55:12,061 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-22 19:55:12,061 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-22 19:55:12,062 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-22 19:55:12,062 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-22 19:55:12,062 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-22 19:55:12,062 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 19:55:12,062 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-22 19:55:12,063 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 19:55:12,063 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 19:55:12,063 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-22 19:55:12,063 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-22 19:55:12,063 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-22 19:55:12,063 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 19:55:12,064 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-22 19:55:12,064 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 19:55:12,064 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-22 19:55:12,065 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 19:55:12,065 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 19:55:12,065 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 19:55:12,065 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 19:55:12,065 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 19:55:12,066 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-22 19:55:12,066 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 628be9b0d43b46482b2f1f32ff1648acbb8b41e569549b972a02e76fffda9076 [2021-12-22 19:55:12,270 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 19:55:12,281 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 19:55:12,284 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 19:55:12,285 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 19:55:12,287 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 19:55:12,288 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-15/array16_alloca_original.i [2021-12-22 19:55:12,333 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dcc0f5dff/e8bb65a7461543e485917d2251ab0e11/FLAGcefb3a33d [2021-12-22 19:55:12,697 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 19:55:12,698 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-15/array16_alloca_original.i [2021-12-22 19:55:12,706 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dcc0f5dff/e8bb65a7461543e485917d2251ab0e11/FLAGcefb3a33d [2021-12-22 19:55:13,111 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dcc0f5dff/e8bb65a7461543e485917d2251ab0e11 [2021-12-22 19:55:13,113 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 19:55:13,114 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 19:55:13,117 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 19:55:13,117 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 19:55:13,119 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 19:55:13,120 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:55:13" (1/1) ... [2021-12-22 19:55:13,120 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51facb21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:55:13, skipping insertion in model container [2021-12-22 19:55:13,120 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:55:13" (1/1) ... [2021-12-22 19:55:13,125 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 19:55:13,149 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 19:55:13,329 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 19:55:13,336 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 19:55:13,388 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 19:55:13,424 INFO L208 MainTranslator]: Completed translation [2021-12-22 19:55:13,425 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:55:13 WrapperNode [2021-12-22 19:55:13,425 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 19:55:13,426 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 19:55:13,426 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 19:55:13,426 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 19:55:13,435 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:55:13" (1/1) ... [2021-12-22 19:55:13,453 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:55:13" (1/1) ... [2021-12-22 19:55:13,468 INFO L137 Inliner]: procedures = 151, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 54 [2021-12-22 19:55:13,468 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 19:55:13,469 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 19:55:13,469 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 19:55:13,469 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 19:55:13,474 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:55:13" (1/1) ... [2021-12-22 19:55:13,474 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:55:13" (1/1) ... [2021-12-22 19:55:13,475 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:55:13" (1/1) ... [2021-12-22 19:55:13,475 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:55:13" (1/1) ... [2021-12-22 19:55:13,478 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:55:13" (1/1) ... [2021-12-22 19:55:13,480 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:55:13" (1/1) ... [2021-12-22 19:55:13,481 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:55:13" (1/1) ... [2021-12-22 19:55:13,482 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 19:55:13,482 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 19:55:13,482 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 19:55:13,482 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 19:55:13,483 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:55:13" (1/1) ... [2021-12-22 19:55:13,498 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:55:13,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:55:13,513 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) [2021-12-22 19:55:13,515 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 [2021-12-22 19:55:13,536 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-22 19:55:13,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-22 19:55:13,536 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-22 19:55:13,536 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-22 19:55:13,536 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 19:55:13,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 19:55:13,579 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 19:55:13,580 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 19:55:13,656 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 19:55:13,659 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 19:55:13,660 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-22 19:55:13,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:55:13 BoogieIcfgContainer [2021-12-22 19:55:13,661 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 19:55:13,662 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-22 19:55:13,662 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-22 19:55:13,664 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-22 19:55:13,665 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-22 19:55:13,665 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 22.12 07:55:13" (1/3) ... [2021-12-22 19:55:13,666 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5756cec1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.12 07:55:13, skipping insertion in model container [2021-12-22 19:55:13,666 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-22 19:55:13,666 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:55:13" (2/3) ... [2021-12-22 19:55:13,666 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5756cec1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.12 07:55:13, skipping insertion in model container [2021-12-22 19:55:13,666 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-22 19:55:13,666 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:55:13" (3/3) ... [2021-12-22 19:55:13,667 INFO L388 chiAutomizerObserver]: Analyzing ICFG array16_alloca_original.i [2021-12-22 19:55:13,700 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-22 19:55:13,701 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-22 19:55:13,701 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-22 19:55:13,701 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-22 19:55:13,701 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-22 19:55:13,701 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-22 19:55:13,701 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-22 19:55:13,702 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-22 19:55:13,754 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 15 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 14 states have internal predecessors, (22), 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) [2021-12-22 19:55:13,774 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 5 [2021-12-22 19:55:13,787 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-22 19:55:13,787 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-22 19:55:13,791 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2021-12-22 19:55:13,792 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-22 19:55:13,792 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-22 19:55:13,792 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 15 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 14 states have internal predecessors, (22), 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) [2021-12-22 19:55:13,793 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 5 [2021-12-22 19:55:13,793 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-22 19:55:13,793 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-22 19:55:13,794 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2021-12-22 19:55:13,794 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-22 19:55:13,798 INFO L791 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~mem209#1, main_#t~post207#1, main_#t~mem210#1, main_#t~post211#1, main_#t~post212#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 [2021-12-22 19:55:13,798 INFO L793 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;call main_#t~mem209#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4); 13#L372true assume 1 == (if main_#t~mem209#1 < 0 && 0 != main_#t~mem209#1 % 2 then main_#t~mem209#1 % 2 - 2 else main_#t~mem209#1 % 2);havoc main_#t~mem209#1;call write~int(0, main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4); 16#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 [2021-12-22 19:55:13,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:55:13,828 INFO L85 PathProgramCache]: Analyzing trace with hash 28695753, now seen corresponding path program 1 times [2021-12-22 19:55:13,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:55:13,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426111562] [2021-12-22 19:55:13,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:55:13,835 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:55:13,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:55:13,924 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 19:55:13,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:55:13,953 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 19:55:13,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:55:13,956 INFO L85 PathProgramCache]: Analyzing trace with hash 51737, now seen corresponding path program 1 times [2021-12-22 19:55:13,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:55:13,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044140066] [2021-12-22 19:55:13,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:55:13,957 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:55:13,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:55:13,983 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 19:55:14,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:55:14,009 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 19:55:14,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:55:14,010 INFO L85 PathProgramCache]: Analyzing trace with hash 176707665, now seen corresponding path program 1 times [2021-12-22 19:55:14,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:55:14,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424508368] [2021-12-22 19:55:14,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:55:14,011 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:55:14,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:55:14,036 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 19:55:14,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:55:14,065 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 19:55:14,294 INFO L210 LassoAnalysis]: Preferences: [2021-12-22 19:55:14,296 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-22 19:55:14,296 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-22 19:55:14,296 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-22 19:55:14,296 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-22 19:55:14,296 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:55:14,296 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-22 19:55:14,297 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-22 19:55:14,297 INFO L133 ssoRankerPreferences]: Filename of dumped script: array16_alloca_original.i_Iteration1_Lasso [2021-12-22 19:55:14,297 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-22 19:55:14,297 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-22 19:55:14,309 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:55:14,313 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:55:14,316 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:55:14,319 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:55:14,321 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:55:14,439 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:55:14,441 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:55:14,442 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:55:14,444 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:55:14,446 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:55:14,449 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:55:14,452 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:55:14,621 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-22 19:55:14,624 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-22 19:55:14,625 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:55:14,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:55:14,632 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) [2021-12-22 19:55:14,632 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 [2021-12-22 19:55:14,634 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 [2021-12-22 19:55:14,640 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-22 19:55:14,641 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-22 19:55:14,641 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-22 19:55:14,641 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-22 19:55:14,641 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-22 19:55:14,644 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-22 19:55:14,644 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-22 19:55:14,652 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-22 19:55:14,667 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2021-12-22 19:55:14,668 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:55:14,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:55:14,669 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) [2021-12-22 19:55:14,669 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 [2021-12-22 19:55:14,671 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 [2021-12-22 19:55:14,676 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-22 19:55:14,677 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-22 19:55:14,677 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-22 19:55:14,677 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-22 19:55:14,679 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-22 19:55:14,679 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-22 19:55:14,695 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-22 19:55:14,711 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 [2021-12-22 19:55:14,711 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:55:14,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:55:14,712 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) [2021-12-22 19:55:14,714 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 [2021-12-22 19:55:14,715 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 [2021-12-22 19:55:14,721 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-22 19:55:14,721 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-22 19:55:14,721 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-22 19:55:14,721 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-22 19:55:14,721 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-22 19:55:14,722 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-22 19:55:14,722 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-22 19:55:14,736 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-22 19:55:14,751 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 [2021-12-22 19:55:14,752 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:55:14,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:55:14,753 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) [2021-12-22 19:55:14,753 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 [2021-12-22 19:55:14,754 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 [2021-12-22 19:55:14,760 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-22 19:55:14,761 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-22 19:55:14,761 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-22 19:55:14,761 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-22 19:55:14,761 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-22 19:55:14,763 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-22 19:55:14,763 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-22 19:55:14,775 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-22 19:55:14,790 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 [2021-12-22 19:55:14,790 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:55:14,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:55:14,791 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) [2021-12-22 19:55:14,792 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 [2021-12-22 19:55:14,793 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 [2021-12-22 19:55:14,799 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-22 19:55:14,799 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-22 19:55:14,800 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-22 19:55:14,800 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-22 19:55:14,800 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-22 19:55:14,800 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-22 19:55:14,800 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-22 19:55:14,811 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-22 19:55:14,837 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 [2021-12-22 19:55:14,838 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:55:14,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:55:14,839 INFO L229 MonitoredProcess]: Starting monitored process 7 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) [2021-12-22 19:55:14,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-12-22 19:55:14,842 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 [2021-12-22 19:55:14,848 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-22 19:55:14,849 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-22 19:55:14,849 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-22 19:55:14,849 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-22 19:55:14,852 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-22 19:55:14,852 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-22 19:55:14,879 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-22 19:55:14,897 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-12-22 19:55:14,897 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:55:14,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:55:14,898 INFO L229 MonitoredProcess]: Starting monitored process 8 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) [2021-12-22 19:55:14,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-12-22 19:55:14,900 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 [2021-12-22 19:55:14,906 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-22 19:55:14,906 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-22 19:55:14,906 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-22 19:55:14,906 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-22 19:55:14,909 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-22 19:55:14,909 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-22 19:55:14,935 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-22 19:55:14,951 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-12-22 19:55:14,951 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:55:14,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:55:14,952 INFO L229 MonitoredProcess]: Starting monitored process 9 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) [2021-12-22 19:55:14,953 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-12-22 19:55:14,954 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 [2021-12-22 19:55:14,960 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-22 19:55:14,960 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-22 19:55:14,960 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-22 19:55:14,960 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-22 19:55:14,977 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-22 19:55:14,978 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-22 19:55:14,992 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-22 19:55:15,033 INFO L443 ModelExtractionUtils]: Simplification made 16 calls to the SMT solver. [2021-12-22 19:55:15,033 INFO L444 ModelExtractionUtils]: 8 out of 22 variables were initially zero. Simplification set additionally 10 variables to zero. [2021-12-22 19:55:15,035 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:55:15,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:55:15,036 INFO L229 MonitoredProcess]: Starting monitored process 10 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) [2021-12-22 19:55:15,037 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-12-22 19:55:15,038 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-22 19:55:15,064 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2021-12-22 19:55:15,064 INFO L513 LassoAnalysis]: Proved termination. [2021-12-22 19:55:15,065 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, ULTIMATE.start_main_~arr~0#1.offset) = 1*v_rep(select #length ULTIMATE.start_main_~arr~0#1.base)_1 - 4*ULTIMATE.start_main_~i~0#1 - 1*ULTIMATE.start_main_~arr~0#1.offset Supporting invariants [] [2021-12-22 19:55:15,099 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-12-22 19:55:15,107 INFO L297 tatePredicateManager]: 3 out of 3 supporting invariants were superfluous and have been removed [2021-12-22 19:55:15,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:55:15,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:55:15,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-22 19:55:15,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:55:15,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:55:15,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-22 19:55:15,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:55:15,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:55:15,215 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-12-22 19:55:15,216 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 15 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 14 states have internal predecessors, (22), 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 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2021-12-22 19:55:15,255 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 15 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 14 states have internal predecessors, (22), 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 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 35 states and 50 transitions. Complement of second has 7 states. [2021-12-22 19:55:15,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-12-22 19:55:15,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2021-12-22 19:55:15,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 33 transitions. [2021-12-22 19:55:15,264 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 33 transitions. Stem has 5 letters. Loop has 3 letters. [2021-12-22 19:55:15,265 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-22 19:55:15,265 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 33 transitions. Stem has 8 letters. Loop has 3 letters. [2021-12-22 19:55:15,266 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-22 19:55:15,266 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 33 transitions. Stem has 5 letters. Loop has 6 letters. [2021-12-22 19:55:15,266 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-22 19:55:15,266 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 50 transitions. [2021-12-22 19:55:15,270 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-12-22 19:55:15,272 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 12 states and 17 transitions. [2021-12-22 19:55:15,273 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2021-12-22 19:55:15,273 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2021-12-22 19:55:15,273 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 17 transitions. [2021-12-22 19:55:15,274 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 19:55:15,274 INFO L681 BuchiCegarLoop]: Abstraction has 12 states and 17 transitions. [2021-12-22 19:55:15,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 17 transitions. [2021-12-22 19:55:15,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-12-22 19:55:15,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 11 states have internal predecessors, (17), 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) [2021-12-22 19:55:15,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 17 transitions. [2021-12-22 19:55:15,292 INFO L704 BuchiCegarLoop]: Abstraction has 12 states and 17 transitions. [2021-12-22 19:55:15,292 INFO L587 BuchiCegarLoop]: Abstraction has 12 states and 17 transitions. [2021-12-22 19:55:15,292 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-22 19:55:15,293 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 17 transitions. [2021-12-22 19:55:15,294 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-12-22 19:55:15,298 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-22 19:55:15,299 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-22 19:55:15,299 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-22 19:55:15,299 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-12-22 19:55:15,300 INFO L791 eck$LassoCheckResult]: Stem: 113#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 114#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~mem209#1, main_#t~post207#1, main_#t~mem210#1, main_#t~post211#1, main_#t~post212#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; 121#L367 assume !(main_~length~0#1 < 1); 115#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; 116#L369 assume !(main_~arr~0#1.base == 0 && main_~arr~0#1.offset == 0);main_~i~0#1 := 0; 117#L370-3 assume !(main_~i~0#1 < main_~length~0#1); 118#L370-4 main_~j~0#1 := 0; 119#L378-2 [2021-12-22 19:55:15,300 INFO L793 eck$LassoCheckResult]: Loop: 119#L378-2 assume !!(0 <= main_~j~0#1 && main_~j~0#1 < main_~length~0#1);call main_#t~mem210#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~j~0#1, 4); 120#L378 assume 0 == (if main_#t~mem210#1 < 0 && 0 != main_#t~mem210#1 % 2 then main_#t~mem210#1 % 2 - 2 else main_#t~mem210#1 % 2);havoc main_#t~mem210#1;main_#t~post211#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post211#1;havoc main_#t~post211#1; 119#L378-2 [2021-12-22 19:55:15,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:55:15,301 INFO L85 PathProgramCache]: Analyzing trace with hash 1806815510, now seen corresponding path program 1 times [2021-12-22 19:55:15,301 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:55:15,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963020806] [2021-12-22 19:55:15,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:55:15,301 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:55:15,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:55:15,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:55:15,347 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 19:55:15,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963020806] [2021-12-22 19:55:15,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963020806] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 19:55:15,348 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 19:55:15,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 19:55:15,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313712656] [2021-12-22 19:55:15,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 19:55:15,350 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-22 19:55:15,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:55:15,350 INFO L85 PathProgramCache]: Analyzing trace with hash 2308, now seen corresponding path program 1 times [2021-12-22 19:55:15,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:55:15,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9487710] [2021-12-22 19:55:15,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:55:15,351 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:55:15,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:55:15,356 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 19:55:15,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:55:15,360 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 19:55:15,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 19:55:15,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 19:55:15,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-22 19:55:15,397 INFO L87 Difference]: Start difference. First operand 12 states and 17 transitions. cyclomatic complexity: 7 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) [2021-12-22 19:55:15,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 19:55:15,413 INFO L93 Difference]: Finished difference Result 14 states and 19 transitions. [2021-12-22 19:55:15,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 19:55:15,414 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 19 transitions. [2021-12-22 19:55:15,415 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-12-22 19:55:15,415 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 14 states and 19 transitions. [2021-12-22 19:55:15,415 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2021-12-22 19:55:15,415 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2021-12-22 19:55:15,415 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 19 transitions. [2021-12-22 19:55:15,415 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 19:55:15,416 INFO L681 BuchiCegarLoop]: Abstraction has 14 states and 19 transitions. [2021-12-22 19:55:15,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 19 transitions. [2021-12-22 19:55:15,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2021-12-22 19:55:15,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 11 states have internal predecessors, (16), 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) [2021-12-22 19:55:15,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 16 transitions. [2021-12-22 19:55:15,417 INFO L704 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2021-12-22 19:55:15,417 INFO L587 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2021-12-22 19:55:15,417 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-12-22 19:55:15,417 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 16 transitions. [2021-12-22 19:55:15,417 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-12-22 19:55:15,417 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-22 19:55:15,418 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-22 19:55:15,418 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 19:55:15,418 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-12-22 19:55:15,418 INFO L791 eck$LassoCheckResult]: Stem: 146#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 147#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet205#1, main_#t~malloc206#1.base, main_#t~malloc206#1.offset, main_#t~nondet208#1, main_#t~mem209#1, main_#t~post207#1, main_#t~mem210#1, main_#t~post211#1, main_#t~post212#1, main_~i~0#1, main_~j~0#1, main_~length~0#1, main_~arr~0#1.base, main_~arr~0#1.offset;havoc main_~i~0#1;havoc main_~j~0#1;main_~length~0#1 := main_#t~nondet205#1;havoc main_#t~nondet205#1; 154#L367 assume !(main_~length~0#1 < 1); 148#L367-2 call main_#t~malloc206#1.base, main_#t~malloc206#1.offset := #Ultimate.allocOnStack(4 * main_~length~0#1);main_~arr~0#1.base, main_~arr~0#1.offset := main_#t~malloc206#1.base, main_#t~malloc206#1.offset; 149#L369 assume !(main_~arr~0#1.base == 0 && main_~arr~0#1.offset == 0);main_~i~0#1 := 0; 150#L370-3 assume !!(main_~i~0#1 < main_~length~0#1);call write~int(main_#t~nondet208#1, main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet208#1;call main_#t~mem209#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4); 155#L372 assume !(1 == (if main_#t~mem209#1 < 0 && 0 != main_#t~mem209#1 % 2 then main_#t~mem209#1 % 2 - 2 else main_#t~mem209#1 % 2));havoc main_#t~mem209#1; 157#L370-2 main_#t~post207#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post207#1;havoc main_#t~post207#1; 156#L370-3 assume !(main_~i~0#1 < main_~length~0#1); 151#L370-4 main_~j~0#1 := 0; 152#L378-2 [2021-12-22 19:55:15,418 INFO L793 eck$LassoCheckResult]: Loop: 152#L378-2 assume !!(0 <= main_~j~0#1 && main_~j~0#1 < main_~length~0#1);call main_#t~mem210#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~j~0#1, 4); 153#L378 assume 0 == (if main_#t~mem210#1 < 0 && 0 != main_#t~mem210#1 % 2 then main_#t~mem210#1 % 2 - 2 else main_#t~mem210#1 % 2);havoc main_#t~mem210#1;main_#t~post211#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post211#1;havoc main_#t~post211#1; 152#L378-2 [2021-12-22 19:55:15,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:55:15,419 INFO L85 PathProgramCache]: Analyzing trace with hash -1982565540, now seen corresponding path program 1 times [2021-12-22 19:55:15,419 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:55:15,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173995533] [2021-12-22 19:55:15,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:55:15,421 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:55:15,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:55:15,434 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 19:55:15,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:55:15,452 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 19:55:15,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:55:15,453 INFO L85 PathProgramCache]: Analyzing trace with hash 2308, now seen corresponding path program 2 times [2021-12-22 19:55:15,453 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:55:15,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827138284] [2021-12-22 19:55:15,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:55:15,454 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:55:15,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:55:15,464 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 19:55:15,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:55:15,468 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 19:55:15,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:55:15,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1719996831, now seen corresponding path program 1 times [2021-12-22 19:55:15,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:55:15,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417310129] [2021-12-22 19:55:15,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:55:15,469 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:55:15,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:55:15,488 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 19:55:15,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:55:15,513 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 19:55:15,731 INFO L210 LassoAnalysis]: Preferences: [2021-12-22 19:55:15,732 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-22 19:55:15,732 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-22 19:55:15,732 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-22 19:55:15,732 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-22 19:55:15,732 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:55:15,732 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-22 19:55:15,732 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-22 19:55:15,732 INFO L133 ssoRankerPreferences]: Filename of dumped script: array16_alloca_original.i_Iteration3_Lasso [2021-12-22 19:55:15,732 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-22 19:55:15,732 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-22 19:55:15,734 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:55:15,736 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:55:15,738 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:55:15,740 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:55:15,753 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer has thrown an exception: java.lang.IllegalArgumentException at de.uni_freiburg.informatik.ultimate.util.datastructures.ScopedHashMap.put(ScopedHashMap.java:331) at java.base/java.util.AbstractMap.putAll(AbstractMap.java:281) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.PureSubstitution.(PureSubstitution.java:81) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.Substitution.(Substitution.java:48) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.Substitution.apply(Substitution.java:59) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.mapelimination.MapEliminator.replaceMapReads(MapEliminator.java:518) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.mapelimination.MapEliminator.getRewrittenTransFormula(MapEliminator.java:342) at de.uni_freiburg.informatik.ultimate.lassoranker.preprocessors.MapEliminationLassoPreprocessor.process(MapEliminationLassoPreprocessor.java:109) at de.uni_freiburg.informatik.ultimate.lassoranker.variables.LassoBuilder.applyPreprocessor(LassoBuilder.java:154) at de.uni_freiburg.informatik.ultimate.lassoranker.variables.LassoBuilder.preprocess(LassoBuilder.java:262) at de.uni_freiburg.informatik.ultimate.lassoranker.LassoAnalysis.preprocess(LassoAnalysis.java:280) at de.uni_freiburg.informatik.ultimate.lassoranker.LassoAnalysis.(LassoAnalysis.java:229) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck.synthesize(LassoCheck.java:609) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck$LassoCheckResult.checkLassoTermination(LassoCheck.java:953) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck$LassoCheckResult.(LassoCheck.java:862) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck.(LassoCheck.java:252) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiCegarLoop.iterate(BuchiCegarLoop.java:457) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver.doTerminationAnalysis(BuchiAutomizerObserver.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver.finish(BuchiAutomizerObserver.java:397) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-12-22 19:55:15,756 INFO L158 Benchmark]: Toolchain (without parser) took 2641.40ms. Allocated memory was 94.4MB in the beginning and 130.0MB in the end (delta: 35.7MB). Free memory was 55.5MB in the beginning and 45.2MB in the end (delta: 10.3MB). Peak memory consumption was 48.0MB. Max. memory is 16.1GB. [2021-12-22 19:55:15,756 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 94.4MB. Free memory was 72.9MB in the beginning and 72.9MB in the end (delta: 78.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 19:55:15,757 INFO L158 Benchmark]: CACSL2BoogieTranslator took 308.35ms. Allocated memory was 94.4MB in the beginning and 130.0MB in the end (delta: 35.7MB). Free memory was 55.4MB in the beginning and 106.3MB in the end (delta: -50.9MB). Peak memory consumption was 22.5MB. Max. memory is 16.1GB. [2021-12-22 19:55:15,757 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.47ms. Allocated memory is still 130.0MB. Free memory was 106.2MB in the beginning and 106.6MB in the end (delta: -410.5kB). Peak memory consumption was 5.8MB. Max. memory is 16.1GB. [2021-12-22 19:55:15,757 INFO L158 Benchmark]: Boogie Preprocessor took 13.03ms. Allocated memory is still 130.0MB. Free memory was 106.6MB in the beginning and 105.8MB in the end (delta: 816.6kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-22 19:55:15,758 INFO L158 Benchmark]: RCFGBuilder took 179.03ms. Allocated memory is still 130.0MB. Free memory was 105.2MB in the beginning and 95.3MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-22 19:55:15,758 INFO L158 Benchmark]: BuchiAutomizer took 2093.27ms. Allocated memory is still 130.0MB. Free memory was 94.7MB in the beginning and 45.2MB in the end (delta: 49.5MB). Peak memory consumption was 49.1MB. Max. memory is 16.1GB. [2021-12-22 19:55:15,760 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 94.4MB. Free memory was 72.9MB in the beginning and 72.9MB in the end (delta: 78.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 308.35ms. Allocated memory was 94.4MB in the beginning and 130.0MB in the end (delta: 35.7MB). Free memory was 55.4MB in the beginning and 106.3MB in the end (delta: -50.9MB). Peak memory consumption was 22.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.47ms. Allocated memory is still 130.0MB. Free memory was 106.2MB in the beginning and 106.6MB in the end (delta: -410.5kB). Peak memory consumption was 5.8MB. Max. memory is 16.1GB. * Boogie Preprocessor took 13.03ms. Allocated memory is still 130.0MB. Free memory was 106.6MB in the beginning and 105.8MB in the end (delta: 816.6kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 179.03ms. Allocated memory is still 130.0MB. Free memory was 105.2MB in the beginning and 95.3MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 2093.27ms. Allocated memory is still 130.0MB. Free memory was 94.7MB in the beginning and 45.2MB in the end (delta: 49.5MB). Peak memory consumption was 49.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: - ExceptionOrErrorResult: IllegalArgumentException: null de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: IllegalArgumentException: null: de.uni_freiburg.informatik.ultimate.util.datastructures.ScopedHashMap.put(ScopedHashMap.java:331) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-12-22 19:55:15,797 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-12-22 19:55:16,007 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis No suitable file found in config dir /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config using search string *Termination*64bit*_Bitvector*.epf No suitable settings file found using Termination*64bit*_Bitvector ERROR: UNSUPPORTED PROPERTY Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: IllegalArgumentException: null