./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-15/array20_alloca.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/array20_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 ea5bfa8a156bc44b081b7e322054bf4f8b50233fa79918ee2b9ae09354893d3a --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 19:55:13,391 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 19:55:13,393 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 19:55:13,450 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 19:55:13,450 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 19:55:13,453 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 19:55:13,454 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 19:55:13,456 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 19:55:13,457 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 19:55:13,460 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 19:55:13,460 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 19:55:13,461 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 19:55:13,462 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 19:55:13,463 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 19:55:13,465 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 19:55:13,467 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 19:55:13,467 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 19:55:13,468 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 19:55:13,469 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 19:55:13,473 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 19:55:13,474 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 19:55:13,475 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 19:55:13,476 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 19:55:13,477 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 19:55:13,485 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 19:55:13,485 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 19:55:13,486 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 19:55:13,487 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 19:55:13,487 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 19:55:13,488 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 19:55:13,488 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 19:55:13,489 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 19:55:13,490 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 19:55:13,491 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 19:55:13,492 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 19:55:13,492 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 19:55:13,492 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 19:55:13,493 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 19:55:13,493 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 19:55:13,493 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 19:55:13,494 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 19:55:13,494 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-12-22 19:55:13,519 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 19:55:13,519 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 19:55:13,520 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 19:55:13,520 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 19:55:13,521 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 19:55:13,521 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 19:55:13,521 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 19:55:13,521 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-22 19:55:13,522 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-22 19:55:13,522 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-22 19:55:13,522 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-22 19:55:13,522 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-22 19:55:13,523 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-22 19:55:13,523 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 19:55:13,523 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-22 19:55:13,523 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 19:55:13,523 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 19:55:13,523 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-22 19:55:13,524 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-22 19:55:13,524 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-22 19:55:13,524 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 19:55:13,524 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-22 19:55:13,524 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 19:55:13,524 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-22 19:55:13,525 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 19:55:13,525 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 19:55:13,525 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 19:55:13,525 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 19:55:13,525 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 19:55:13,526 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-22 19:55:13,526 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ea5bfa8a156bc44b081b7e322054bf4f8b50233fa79918ee2b9ae09354893d3a [2021-12-22 19:55:13,730 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 19:55:13,749 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 19:55:13,751 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 19:55:13,752 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 19:55:13,752 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 19:55:13,753 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-15/array20_alloca.i [2021-12-22 19:55:13,827 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08c0c684b/a8109df037c2490c8fb942fb0722ebda/FLAGb973fcd9f [2021-12-22 19:55:14,193 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 19:55:14,194 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-15/array20_alloca.i [2021-12-22 19:55:14,201 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08c0c684b/a8109df037c2490c8fb942fb0722ebda/FLAGb973fcd9f [2021-12-22 19:55:14,569 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08c0c684b/a8109df037c2490c8fb942fb0722ebda [2021-12-22 19:55:14,571 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 19:55:14,573 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 19:55:14,577 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 19:55:14,577 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 19:55:14,579 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 19:55:14,580 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:55:14" (1/1) ... [2021-12-22 19:55:14,580 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@747e89d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:55:14, skipping insertion in model container [2021-12-22 19:55:14,581 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:55:14" (1/1) ... [2021-12-22 19:55:14,585 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 19:55:14,616 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 19:55:14,842 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 19:55:14,849 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 19:55:14,908 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 19:55:14,939 INFO L208 MainTranslator]: Completed translation [2021-12-22 19:55:14,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:55:14 WrapperNode [2021-12-22 19:55:14,940 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 19:55:14,941 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 19:55:14,941 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 19:55:14,941 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 19:55:14,947 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:55:14" (1/1) ... [2021-12-22 19:55:14,961 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:55:14" (1/1) ... [2021-12-22 19:55:14,978 INFO L137 Inliner]: procedures = 151, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 47 [2021-12-22 19:55:14,978 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 19:55:14,979 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 19:55:14,979 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 19:55:14,979 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 19:55:14,984 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:55:14" (1/1) ... [2021-12-22 19:55:14,985 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:55:14" (1/1) ... [2021-12-22 19:55:14,993 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:55:14" (1/1) ... [2021-12-22 19:55:14,993 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:55:14" (1/1) ... [2021-12-22 19:55:15,002 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:55:14" (1/1) ... [2021-12-22 19:55:15,007 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:55:14" (1/1) ... [2021-12-22 19:55:15,008 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:55:14" (1/1) ... [2021-12-22 19:55:15,012 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 19:55:15,012 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 19:55:15,012 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 19:55:15,013 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 19:55:15,024 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:55:14" (1/1) ... [2021-12-22 19:55:15,029 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:55:15,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:55:15,048 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 19:55:15,054 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 19:55:15,084 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-22 19:55:15,085 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-22 19:55:15,085 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-22 19:55:15,086 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-22 19:55:15,086 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 19:55:15,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 19:55:15,148 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 19:55:15,149 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 19:55:15,272 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 19:55:15,276 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 19:55:15,276 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-22 19:55:15,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:55:15 BoogieIcfgContainer [2021-12-22 19:55:15,277 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 19:55:15,278 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-22 19:55:15,278 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-22 19:55:15,280 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-22 19:55:15,280 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-22 19:55:15,288 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 22.12 07:55:14" (1/3) ... [2021-12-22 19:55:15,289 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@69b381fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.12 07:55:15, skipping insertion in model container [2021-12-22 19:55:15,289 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-22 19:55:15,289 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:55:14" (2/3) ... [2021-12-22 19:55:15,289 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@69b381fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.12 07:55:15, skipping insertion in model container [2021-12-22 19:55:15,289 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-22 19:55:15,290 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:55:15" (3/3) ... [2021-12-22 19:55:15,290 INFO L388 chiAutomizerObserver]: Analyzing ICFG array20_alloca.i [2021-12-22 19:55:15,327 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-22 19:55:15,328 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-22 19:55:15,328 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-22 19:55:15,329 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-22 19:55:15,338 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-22 19:55:15,338 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-22 19:55:15,338 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-22 19:55:15,338 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-22 19:55:15,347 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 14 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 13 states have internal predecessors, (20), 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 19:55:15,359 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2021-12-22 19:55:15,360 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-22 19:55:15,360 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-22 19:55:15,363 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2021-12-22 19:55:15,363 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-22 19:55:15,363 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-22 19:55:15,363 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 14 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 13 states have internal predecessors, (20), 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 19:55:15,365 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2021-12-22 19:55:15,365 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-22 19:55:15,365 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-22 19:55:15,366 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2021-12-22 19:55:15,366 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-22 19:55:15,370 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; 9#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_~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; 12#L367true assume !(main_~length~0#1 < 1); 10#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; 6#L369true assume !(main_~arr~0#1.base == 0 && main_~arr~0#1.offset == 0);main_~i~0#1 := 0; 8#L370-3true [2021-12-22 19:55:15,370 INFO L793 eck$LassoCheckResult]: Loop: 8#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 main_#t~mem209#1 < 1;havoc main_#t~mem209#1;call write~int(1, main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4); 15#L370-2true main_#t~post207#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post207#1;havoc main_#t~post207#1; 8#L370-3true [2021-12-22 19:55:15,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:55:15,374 INFO L85 PathProgramCache]: Analyzing trace with hash 28695753, now seen corresponding path program 1 times [2021-12-22 19:55:15,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:55:15,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696170433] [2021-12-22 19:55:15,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:55:15,380 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:55:15,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:55:15,460 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 19:55:15,477 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 19:55:15,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:55:15,480 INFO L85 PathProgramCache]: Analyzing trace with hash 51737, now seen corresponding path program 1 times [2021-12-22 19:55:15,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:55:15,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624420138] [2021-12-22 19:55:15,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:55:15,481 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:55:15,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:55:15,495 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 19:55:15,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:55:15,503 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 19:55:15,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:55:15,507 INFO L85 PathProgramCache]: Analyzing trace with hash 176707665, now seen corresponding path program 1 times [2021-12-22 19:55:15,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:55:15,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605058323] [2021-12-22 19:55:15,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:55:15,507 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:55:15,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:55:15,535 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 19:55:15,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:55:15,550 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 19:55:15,795 INFO L210 LassoAnalysis]: Preferences: [2021-12-22 19:55:15,796 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-22 19:55:15,796 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-22 19:55:15,796 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-22 19:55:15,796 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-22 19:55:15,796 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:55:15,797 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-22 19:55:15,797 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-22 19:55:15,797 INFO L133 ssoRankerPreferences]: Filename of dumped script: array20_alloca.i_Iteration1_Lasso [2021-12-22 19:55:15,797 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-22 19:55:15,798 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-22 19:55:15,829 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 19:55:15,834 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 19:55:15,837 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 19:55:15,839 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 19:55:15,953 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 19:55:15,956 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 19:55:15,958 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 19:55:15,960 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 19:55:15,963 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 19:55:15,967 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 19:55:16,131 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-22 19:55:16,134 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-22 19:55:16,135 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:55:16,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:55:16,136 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 19:55:16,137 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 19:55:16,138 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 19:55:16,145 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-22 19:55:16,145 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-22 19:55:16,146 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-22 19:55:16,146 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-22 19:55:16,146 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-22 19:55:16,148 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-22 19:55:16,148 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-22 19:55:16,156 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-22 19:55:16,173 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 [2021-12-22 19:55:16,174 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:55:16,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:55:16,180 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 19:55:16,181 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 19:55:16,182 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 19:55:16,188 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-22 19:55:16,188 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-22 19:55:16,188 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-22 19:55:16,188 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-22 19:55:16,191 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-22 19:55:16,191 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-22 19:55:16,207 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-22 19:55:16,223 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 19:55:16,224 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:55:16,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:55:16,228 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 19:55:16,233 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 19:55:16,240 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-22 19:55:16,240 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-22 19:55:16,240 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-22 19:55:16,240 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-22 19:55:16,240 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-22 19:55:16,241 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-22 19:55:16,241 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-22 19:55:16,251 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 19:55:16,252 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-22 19:55:16,270 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 19:55:16,270 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:55:16,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:55:16,271 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 19:55:16,272 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 19:55:16,273 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 19:55:16,280 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-22 19:55:16,280 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-22 19:55:16,280 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-22 19:55:16,280 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-22 19:55:16,280 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-22 19:55:16,281 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-22 19:55:16,281 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-22 19:55:16,282 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-22 19:55:16,300 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2021-12-22 19:55:16,301 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:55:16,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:55:16,301 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 19:55:16,302 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 19:55:16,303 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 19:55:16,309 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-22 19:55:16,309 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-22 19:55:16,309 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-22 19:55:16,309 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-22 19:55:16,313 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-22 19:55:16,313 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-22 19:55:16,331 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-22 19:55:16,349 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 19:55:16,350 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:55:16,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:55:16,351 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 19:55:16,352 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 19:55:16,353 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 19:55:16,360 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-22 19:55:16,360 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-22 19:55:16,360 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-22 19:55:16,360 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-22 19:55:16,362 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-22 19:55:16,362 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-22 19:55:16,377 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-22 19:55:16,397 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 19:55:16,398 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:55:16,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:55:16,399 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 19:55:16,400 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 19:55:16,401 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 19:55:16,408 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-22 19:55:16,408 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-22 19:55:16,408 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-22 19:55:16,408 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-22 19:55:16,414 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-22 19:55:16,414 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-22 19:55:16,429 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-22 19:55:16,446 INFO L443 ModelExtractionUtils]: Simplification made 10 calls to the SMT solver. [2021-12-22 19:55:16,446 INFO L444 ModelExtractionUtils]: 6 out of 22 variables were initially zero. Simplification set additionally 12 variables to zero. [2021-12-22 19:55:16,447 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:55:16,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:55:16,451 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 19:55:16,452 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 19:55:16,453 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-22 19:55:16,468 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2021-12-22 19:55:16,468 INFO L513 LassoAnalysis]: Proved termination. [2021-12-22 19:55:16,469 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) = 2*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 19:55:16,487 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 19:55:16,497 INFO L297 tatePredicateManager]: 3 out of 3 supporting invariants were superfluous and have been removed [2021-12-22 19:55:16,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:55:16,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:55:16,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-22 19:55:16,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:55:16,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:55:16,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-22 19:55:16,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:55:16,617 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 19:55:16,636 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 19:55:16,637 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 14 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 13 states have internal predecessors, (20), 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 19:55:16,671 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 14 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 13 states have internal predecessors, (20), 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 32 states and 44 transitions. Complement of second has 7 states. [2021-12-22 19:55:16,672 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 19:55:16,675 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 19:55:16,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 29 transitions. [2021-12-22 19:55:16,677 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 29 transitions. Stem has 5 letters. Loop has 3 letters. [2021-12-22 19:55:16,677 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-22 19:55:16,678 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 29 transitions. Stem has 8 letters. Loop has 3 letters. [2021-12-22 19:55:16,678 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-22 19:55:16,678 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 29 transitions. Stem has 5 letters. Loop has 6 letters. [2021-12-22 19:55:16,678 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-22 19:55:16,679 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 44 transitions. [2021-12-22 19:55:16,680 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-12-22 19:55:16,682 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 11 states and 15 transitions. [2021-12-22 19:55:16,683 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2021-12-22 19:55:16,683 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2021-12-22 19:55:16,684 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 15 transitions. [2021-12-22 19:55:16,684 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 19:55:16,684 INFO L681 BuchiCegarLoop]: Abstraction has 11 states and 15 transitions. [2021-12-22 19:55:16,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 15 transitions. [2021-12-22 19:55:16,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-12-22 19:55:16,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 10 states have internal predecessors, (15), 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 19:55:16,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 15 transitions. [2021-12-22 19:55:16,699 INFO L704 BuchiCegarLoop]: Abstraction has 11 states and 15 transitions. [2021-12-22 19:55:16,699 INFO L587 BuchiCegarLoop]: Abstraction has 11 states and 15 transitions. [2021-12-22 19:55:16,699 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-22 19:55:16,699 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 15 transitions. [2021-12-22 19:55:16,699 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-12-22 19:55:16,700 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-22 19:55:16,700 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-22 19:55:16,700 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-22 19:55:16,700 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-12-22 19:55:16,700 INFO L791 eck$LassoCheckResult]: Stem: 109#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 110#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_~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; 116#L367 assume !(main_~length~0#1 < 1); 111#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; 112#L369 assume !(main_~arr~0#1.base == 0 && main_~arr~0#1.offset == 0);main_~i~0#1 := 0; 113#L370-3 assume !(main_~i~0#1 < main_~length~0#1); 114#L370-4 main_~j~0#1 := 1; 115#L377-2 [2021-12-22 19:55:16,700 INFO L793 eck$LassoCheckResult]: Loop: 115#L377-2 assume !!(1 <= 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);main_~j~0#1 := main_~j~0#1 * main_#t~mem210#1;havoc main_#t~mem210#1; 115#L377-2 [2021-12-22 19:55:16,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:55:16,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1806815510, now seen corresponding path program 1 times [2021-12-22 19:55:16,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:55:16,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976750677] [2021-12-22 19:55:16,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:55:16,704 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:55:16,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:55:16,758 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 19:55:16,782 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 19:55:16,782 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 19:55:16,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976750677] [2021-12-22 19:55:16,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976750677] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 19:55:16,783 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 19:55:16,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 19:55:16,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646649058] [2021-12-22 19:55:16,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 19:55:16,795 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-22 19:55:16,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:55:16,796 INFO L85 PathProgramCache]: Analyzing trace with hash 73, now seen corresponding path program 1 times [2021-12-22 19:55:16,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:55:16,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674734781] [2021-12-22 19:55:16,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:55:16,797 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:55:16,809 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-22 19:55:16,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [373337125] [2021-12-22 19:55:16,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:55:16,809 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:55:16,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:55:16,812 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 19:55:16,813 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-22 19:55:16,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:55:16,836 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 19:55:16,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:55:16,848 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 19:55:16,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 19:55:16,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 19:55:16,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-22 19:55:16,875 INFO L87 Difference]: Start difference. First operand 11 states and 15 transitions. cyclomatic complexity: 6 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 19:55:16,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 19:55:16,899 INFO L93 Difference]: Finished difference Result 13 states and 17 transitions. [2021-12-22 19:55:16,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 19:55:16,900 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 17 transitions. [2021-12-22 19:55:16,901 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-12-22 19:55:16,903 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 13 states and 17 transitions. [2021-12-22 19:55:16,903 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2021-12-22 19:55:16,903 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2021-12-22 19:55:16,903 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 17 transitions. [2021-12-22 19:55:16,904 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 19:55:16,904 INFO L681 BuchiCegarLoop]: Abstraction has 13 states and 17 transitions. [2021-12-22 19:55:16,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 17 transitions. [2021-12-22 19:55:16,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 11. [2021-12-22 19:55:16,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 10 states have internal predecessors, (14), 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 19:55:16,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 14 transitions. [2021-12-22 19:55:16,906 INFO L704 BuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2021-12-22 19:55:16,906 INFO L587 BuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2021-12-22 19:55:16,906 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-12-22 19:55:16,906 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 14 transitions. [2021-12-22 19:55:16,908 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-12-22 19:55:16,908 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-22 19:55:16,908 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-22 19:55:16,908 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 19:55:16,909 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-12-22 19:55:16,909 INFO L791 eck$LassoCheckResult]: Stem: 142#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 143#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet205#1, main_#t~malloc206#1.base, main_#t~malloc206#1.offset, main_#t~nondet208#1, main_#t~mem209#1, main_#t~post207#1, main_#t~mem210#1, main_~i~0#1, main_~j~0#1, main_~length~0#1, main_~arr~0#1.base, main_~arr~0#1.offset;havoc main_~i~0#1;havoc main_~j~0#1;main_~length~0#1 := main_#t~nondet205#1;havoc main_#t~nondet205#1; 147#L367 assume !(main_~length~0#1 < 1); 140#L367-2 call main_#t~malloc206#1.base, main_#t~malloc206#1.offset := #Ultimate.allocOnStack(4 * main_~length~0#1);main_~arr~0#1.base, main_~arr~0#1.offset := main_#t~malloc206#1.base, main_#t~malloc206#1.offset; 141#L369 assume !(main_~arr~0#1.base == 0 && main_~arr~0#1.offset == 0);main_~i~0#1 := 0; 144#L370-3 assume !!(main_~i~0#1 < main_~length~0#1);call write~int(main_#t~nondet208#1, main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet208#1;call main_#t~mem209#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4); 148#L372 assume !(main_#t~mem209#1 < 1);havoc main_#t~mem209#1; 150#L370-2 main_#t~post207#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post207#1;havoc main_#t~post207#1; 149#L370-3 assume !(main_~i~0#1 < main_~length~0#1); 145#L370-4 main_~j~0#1 := 1; 146#L377-2 [2021-12-22 19:55:16,909 INFO L793 eck$LassoCheckResult]: Loop: 146#L377-2 assume !!(1 <= 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);main_~j~0#1 := main_~j~0#1 * main_#t~mem210#1;havoc main_#t~mem210#1; 146#L377-2 [2021-12-22 19:55:16,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:55:16,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1982565540, now seen corresponding path program 1 times [2021-12-22 19:55:16,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:55:16,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285872429] [2021-12-22 19:55:16,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:55:16,910 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:55:16,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:55:16,931 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 19:55:16,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:55:16,939 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 19:55:16,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:55:16,939 INFO L85 PathProgramCache]: Analyzing trace with hash 73, now seen corresponding path program 2 times [2021-12-22 19:55:16,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:55:16,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480763447] [2021-12-22 19:55:16,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:55:16,940 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:55:16,942 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-22 19:55:16,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1553874126] [2021-12-22 19:55:16,942 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-22 19:55:16,942 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:55:16,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:55:16,943 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 19:55:16,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-22 19:55:16,967 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-22 19:55:16,967 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2021-12-22 19:55:16,968 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 19:55:16,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:55:16,971 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 19:55:16,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:55:16,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1329989554, now seen corresponding path program 1 times [2021-12-22 19:55:16,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:55:16,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192160429] [2021-12-22 19:55:16,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:55:16,973 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:55:16,981 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-22 19:55:16,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1357067395] [2021-12-22 19:55:16,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:55:16,982 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:55:16,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:55:17,009 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 19:55:17,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-22 19:55:17,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:55:17,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-22 19:55:17,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:55:17,090 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:55:17,091 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 19:55:17,113 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:55:17,113 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 19:55:17,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192160429] [2021-12-22 19:55:17,114 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-22 19:55:17,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1357067395] [2021-12-22 19:55:17,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1357067395] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 19:55:17,114 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-22 19:55:17,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2021-12-22 19:55:17,114 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328283916] [2021-12-22 19:55:17,115 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-22 19:55:17,140 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 19:55:17,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 19:55:17,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-22 19:55:17,141 INFO L87 Difference]: Start difference. First operand 11 states and 14 transitions. cyclomatic complexity: 5 Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 7 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) [2021-12-22 19:55:17,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 19:55:17,186 INFO L93 Difference]: Finished difference Result 24 states and 31 transitions. [2021-12-22 19:55:17,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-22 19:55:17,187 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 31 transitions. [2021-12-22 19:55:17,187 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-12-22 19:55:17,188 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 16 states and 20 transitions. [2021-12-22 19:55:17,188 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2021-12-22 19:55:17,188 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2021-12-22 19:55:17,188 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 20 transitions. [2021-12-22 19:55:17,188 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 19:55:17,188 INFO L681 BuchiCegarLoop]: Abstraction has 16 states and 20 transitions. [2021-12-22 19:55:17,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states and 20 transitions. [2021-12-22 19:55:17,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 14. [2021-12-22 19:55:17,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 13 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 19:55:17,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2021-12-22 19:55:17,190 INFO L704 BuchiCegarLoop]: Abstraction has 14 states and 17 transitions. [2021-12-22 19:55:17,190 INFO L587 BuchiCegarLoop]: Abstraction has 14 states and 17 transitions. [2021-12-22 19:55:17,190 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-12-22 19:55:17,190 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 17 transitions. [2021-12-22 19:55:17,190 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-12-22 19:55:17,190 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-22 19:55:17,190 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-22 19:55:17,191 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 19:55:17,191 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-12-22 19:55:17,191 INFO L791 eck$LassoCheckResult]: Stem: 255#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 256#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet205#1, main_#t~malloc206#1.base, main_#t~malloc206#1.offset, main_#t~nondet208#1, main_#t~mem209#1, main_#t~post207#1, main_#t~mem210#1, main_~i~0#1, main_~j~0#1, main_~length~0#1, main_~arr~0#1.base, main_~arr~0#1.offset;havoc main_~i~0#1;havoc main_~j~0#1;main_~length~0#1 := main_#t~nondet205#1;havoc main_#t~nondet205#1; 260#L367 assume !(main_~length~0#1 < 1); 253#L367-2 call main_#t~malloc206#1.base, main_#t~malloc206#1.offset := #Ultimate.allocOnStack(4 * main_~length~0#1);main_~arr~0#1.base, main_~arr~0#1.offset := main_#t~malloc206#1.base, main_#t~malloc206#1.offset; 254#L369 assume !(main_~arr~0#1.base == 0 && main_~arr~0#1.offset == 0);main_~i~0#1 := 0; 257#L370-3 assume !!(main_~i~0#1 < main_~length~0#1);call write~int(main_#t~nondet208#1, main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet208#1;call main_#t~mem209#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4); 261#L372 assume !(main_#t~mem209#1 < 1);havoc main_#t~mem209#1; 266#L370-2 main_#t~post207#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post207#1;havoc main_#t~post207#1; 262#L370-3 assume !!(main_~i~0#1 < main_~length~0#1);call write~int(main_#t~nondet208#1, main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet208#1;call main_#t~mem209#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4); 263#L372 assume !(main_#t~mem209#1 < 1);havoc main_#t~mem209#1; 264#L370-2 main_#t~post207#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post207#1;havoc main_#t~post207#1; 265#L370-3 assume !(main_~i~0#1 < main_~length~0#1); 258#L370-4 main_~j~0#1 := 1; 259#L377-2 [2021-12-22 19:55:17,191 INFO L793 eck$LassoCheckResult]: Loop: 259#L377-2 assume !!(1 <= 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);main_~j~0#1 := main_~j~0#1 * main_#t~mem210#1;havoc main_#t~mem210#1; 259#L377-2 [2021-12-22 19:55:17,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:55:17,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1781949270, now seen corresponding path program 2 times [2021-12-22 19:55:17,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:55:17,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114583132] [2021-12-22 19:55:17,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:55:17,192 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:55:17,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:55:17,202 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 19:55:17,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:55:17,211 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 19:55:17,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:55:17,212 INFO L85 PathProgramCache]: Analyzing trace with hash 73, now seen corresponding path program 3 times [2021-12-22 19:55:17,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:55:17,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703640314] [2021-12-22 19:55:17,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:55:17,213 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:55:17,214 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-22 19:55:17,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [677144370] [2021-12-22 19:55:17,215 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-22 19:55:17,215 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:55:17,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:55:17,216 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 19:55:17,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-22 19:55:17,248 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-12-22 19:55:17,249 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2021-12-22 19:55:17,249 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 19:55:17,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:55:17,253 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 19:55:17,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:55:17,253 INFO L85 PathProgramCache]: Analyzing trace with hash -594147436, now seen corresponding path program 2 times [2021-12-22 19:55:17,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:55:17,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977242362] [2021-12-22 19:55:17,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:55:17,254 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:55:17,263 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-22 19:55:17,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [117417711] [2021-12-22 19:55:17,266 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-22 19:55:17,266 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:55:17,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:55:17,268 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 19:55:17,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-22 19:55:17,303 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-22 19:55:17,304 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2021-12-22 19:55:17,304 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 19:55:17,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:55:17,317 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 19:55:17,599 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.12 07:55:17 BoogieIcfgContainer [2021-12-22 19:55:17,600 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-12-22 19:55:17,600 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-22 19:55:17,600 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-22 19:55:17,600 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-22 19:55:17,601 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:55:15" (3/4) ... [2021-12-22 19:55:17,602 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-12-22 19:55:17,628 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-22 19:55:17,629 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-22 19:55:17,629 INFO L158 Benchmark]: Toolchain (without parser) took 3056.67ms. Allocated memory was 111.1MB in the beginning and 142.6MB in the end (delta: 31.5MB). Free memory was 78.8MB in the beginning and 99.5MB in the end (delta: -20.6MB). Peak memory consumption was 11.2MB. Max. memory is 16.1GB. [2021-12-22 19:55:17,630 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 88.1MB. Free memory was 45.4MB in the beginning and 45.3MB in the end (delta: 75.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 19:55:17,630 INFO L158 Benchmark]: CACSL2BoogieTranslator took 363.78ms. Allocated memory is still 111.1MB. Free memory was 78.6MB in the beginning and 79.1MB in the end (delta: -513.5kB). Peak memory consumption was 9.8MB. Max. memory is 16.1GB. [2021-12-22 19:55:17,630 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.22ms. Allocated memory is still 111.1MB. Free memory was 79.1MB in the beginning and 77.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-22 19:55:17,631 INFO L158 Benchmark]: Boogie Preprocessor took 32.73ms. Allocated memory is still 111.1MB. Free memory was 77.1MB in the beginning and 76.2MB in the end (delta: 913.9kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-22 19:55:17,631 INFO L158 Benchmark]: RCFGBuilder took 265.19ms. Allocated memory is still 111.1MB. Free memory was 76.2MB in the beginning and 66.6MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-22 19:55:17,633 INFO L158 Benchmark]: BuchiAutomizer took 2321.74ms. Allocated memory was 111.1MB in the beginning and 142.6MB in the end (delta: 31.5MB). Free memory was 66.6MB in the beginning and 101.6MB in the end (delta: -35.0MB). Peak memory consumption was 35.0MB. Max. memory is 16.1GB. [2021-12-22 19:55:17,633 INFO L158 Benchmark]: Witness Printer took 28.79ms. Allocated memory is still 142.6MB. Free memory was 101.6MB in the beginning and 99.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-22 19:55:17,634 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 88.1MB. Free memory was 45.4MB in the beginning and 45.3MB in the end (delta: 75.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 363.78ms. Allocated memory is still 111.1MB. Free memory was 78.6MB in the beginning and 79.1MB in the end (delta: -513.5kB). Peak memory consumption was 9.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.22ms. Allocated memory is still 111.1MB. Free memory was 79.1MB in the beginning and 77.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.73ms. Allocated memory is still 111.1MB. Free memory was 77.1MB in the beginning and 76.2MB in the end (delta: 913.9kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 265.19ms. Allocated memory is still 111.1MB. Free memory was 76.2MB in the beginning and 66.6MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 2321.74ms. Allocated memory was 111.1MB in the beginning and 142.6MB in the end (delta: 31.5MB). Free memory was 66.6MB in the beginning and 101.6MB in the end (delta: -35.0MB). Peak memory consumption was 35.0MB. Max. memory is 16.1GB. * Witness Printer took 28.79ms. Allocated memory is still 142.6MB. Free memory was 101.6MB in the beginning and 99.5MB in the end (delta: 2.1MB). 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 3 terminating modules (2 trivial, 1 deterministic, 0 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function 2 * unknown-#length-unknown[arr] + -4 * i + -1 * arr and consists of 5 locations. 2 modules have a trivial ranking function, the largest among these consists of 7 locations. The remainder module has 14 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.2s and 4 iterations. TraceHistogramMax:2. Analysis of lassos took 1.9s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 14 states and ocurred in iteration 3. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 51 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 50 mSDsluCounter, 60 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 30 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 60 IncrementalHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 30 mSDtfsCounter, 60 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc1 concLT0 SILN0 SILU1 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital102 mio100 ax100 hnf100 lsp91 ukn83 mio100 lsp61 div100 bol100 ite100 ukn100 eq166 hnf91 smp100 dnf100 smp100 tf100 neg100 sie102 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 32ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 377]: 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=1, arr=2, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@70911641=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@50ca0c1c=2, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@50ca0c1c=0, NULL=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTArraySubscriptExpression@16984b0=0, \result=0, length=2, i=2, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@30d66958=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTArraySubscriptExpression@1d004f33=0, arr=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3ae911e3=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 377]: 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