./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-memory-alloca/selectionsort-alloca-2.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version ff03de63 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-memory-alloca/selectionsort-alloca-2.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 ffc745103ed55cbf924659873c1ffa566d33874f07e41d755dd0e85e8b4a5c0d --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 22:03:39,518 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 22:03:39,520 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 22:03:39,552 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 22:03:39,565 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 22:03:39,568 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 22:03:39,570 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 22:03:39,571 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 22:03:39,572 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 22:03:39,573 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 22:03:39,574 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 22:03:39,574 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 22:03:39,575 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 22:03:39,575 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 22:03:39,576 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 22:03:39,577 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 22:03:39,577 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 22:03:39,578 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 22:03:39,579 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 22:03:39,580 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 22:03:39,581 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 22:03:39,581 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 22:03:39,582 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 22:03:39,583 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 22:03:39,584 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 22:03:39,584 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 22:03:39,585 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 22:03:39,585 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 22:03:39,586 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 22:03:39,586 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 22:03:39,586 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 22:03:39,587 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 22:03:39,587 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 22:03:39,588 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 22:03:39,589 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 22:03:39,589 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 22:03:39,589 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 22:03:39,590 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 22:03:39,590 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 22:03:39,590 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 22:03:39,591 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 22:03:39,592 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-12-21 22:03:39,608 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 22:03:39,608 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 22:03:39,608 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 22:03:39,609 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 22:03:39,609 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 22:03:39,610 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 22:03:39,610 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 22:03:39,610 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-21 22:03:39,610 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-21 22:03:39,610 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-21 22:03:39,611 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-21 22:03:39,611 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-21 22:03:39,611 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-21 22:03:39,611 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 22:03:39,611 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-21 22:03:39,611 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 22:03:39,612 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 22:03:39,612 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-21 22:03:39,612 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-21 22:03:39,612 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-21 22:03:39,612 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 22:03:39,612 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-21 22:03:39,613 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 22:03:39,613 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-21 22:03:39,613 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 22:03:39,613 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 22:03:39,613 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 22:03:39,613 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 22:03:39,613 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 22:03:39,614 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-21 22:03:39,614 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ffc745103ed55cbf924659873c1ffa566d33874f07e41d755dd0e85e8b4a5c0d [2021-12-21 22:03:39,775 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 22:03:39,794 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 22:03:39,796 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 22:03:39,797 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 22:03:39,798 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 22:03:39,799 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-memory-alloca/selectionsort-alloca-2.i [2021-12-21 22:03:39,847 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7504ac13/b6a68f46cf38499c9317c10b264339d4/FLAG055c41b36 [2021-12-21 22:03:40,241 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 22:03:40,241 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-memory-alloca/selectionsort-alloca-2.i [2021-12-21 22:03:40,257 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7504ac13/b6a68f46cf38499c9317c10b264339d4/FLAG055c41b36 [2021-12-21 22:03:40,270 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7504ac13/b6a68f46cf38499c9317c10b264339d4 [2021-12-21 22:03:40,274 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 22:03:40,276 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 22:03:40,277 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 22:03:40,277 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 22:03:40,280 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 22:03:40,280 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 10:03:40" (1/1) ... [2021-12-21 22:03:40,281 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78d35b23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:03:40, skipping insertion in model container [2021-12-21 22:03:40,281 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 10:03:40" (1/1) ... [2021-12-21 22:03:40,286 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 22:03:40,319 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 22:03:40,515 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 22:03:40,520 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 22:03:40,551 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 22:03:40,569 INFO L208 MainTranslator]: Completed translation [2021-12-21 22:03:40,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:03:40 WrapperNode [2021-12-21 22:03:40,570 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 22:03:40,570 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 22:03:40,570 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 22:03:40,571 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 22:03:40,575 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:03:40" (1/1) ... [2021-12-21 22:03:40,582 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:03:40" (1/1) ... [2021-12-21 22:03:40,599 INFO L137 Inliner]: procedures = 111, calls = 12, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 56 [2021-12-21 22:03:40,600 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 22:03:40,601 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 22:03:40,602 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 22:03:40,603 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 22:03:40,607 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:03:40" (1/1) ... [2021-12-21 22:03:40,608 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:03:40" (1/1) ... [2021-12-21 22:03:40,615 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:03:40" (1/1) ... [2021-12-21 22:03:40,615 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:03:40" (1/1) ... [2021-12-21 22:03:40,619 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:03:40" (1/1) ... [2021-12-21 22:03:40,624 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:03:40" (1/1) ... [2021-12-21 22:03:40,633 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:03:40" (1/1) ... [2021-12-21 22:03:40,635 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 22:03:40,635 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 22:03:40,635 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 22:03:40,636 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 22:03:40,636 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:03:40" (1/1) ... [2021-12-21 22:03:40,642 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:03:40,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:03:40,673 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) [2021-12-21 22:03:40,692 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 [2021-12-21 22:03:40,702 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-21 22:03:40,702 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-21 22:03:40,703 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-21 22:03:40,704 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-21 22:03:40,704 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 22:03:40,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 22:03:40,783 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 22:03:40,785 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 22:03:40,884 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 22:03:40,888 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 22:03:40,889 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-21 22:03:40,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 10:03:40 BoogieIcfgContainer [2021-12-21 22:03:40,890 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 22:03:40,890 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-21 22:03:40,890 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-21 22:03:40,893 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-21 22:03:40,893 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-21 22:03:40,893 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 21.12 10:03:40" (1/3) ... [2021-12-21 22:03:40,894 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3485ea0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.12 10:03:40, skipping insertion in model container [2021-12-21 22:03:40,894 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-21 22:03:40,894 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:03:40" (2/3) ... [2021-12-21 22:03:40,894 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3485ea0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.12 10:03:40, skipping insertion in model container [2021-12-21 22:03:40,894 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-21 22:03:40,895 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 10:03:40" (3/3) ... [2021-12-21 22:03:40,896 INFO L388 chiAutomizerObserver]: Analyzing ICFG selectionsort-alloca-2.i [2021-12-21 22:03:40,931 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-21 22:03:40,932 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-21 22:03:40,932 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-21 22:03:40,932 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-21 22:03:40,932 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-21 22:03:40,932 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-21 22:03:40,932 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-21 22:03:40,933 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-21 22:03:40,950 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 14 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 13 states have internal predecessors, (19), 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) [2021-12-21 22:03:40,961 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-12-21 22:03:40,962 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-21 22:03:40,962 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-21 22:03:40,965 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-12-21 22:03:40,965 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-21 22:03:40,965 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-21 22:03:40,966 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 14 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 13 states have internal predecessors, (19), 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) [2021-12-21 22:03:40,966 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-12-21 22:03:40,966 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-21 22:03:40,967 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-21 22:03:40,967 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-12-21 22:03:40,967 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-21 22:03:40,971 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~nondet8#1, main_#t~malloc9#1.base, main_#t~malloc9#1.offset, main_~array_size~0#1, main_~numbers~0#1.base, main_~numbers~0#1.offset;main_~array_size~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1; 11#L566true assume !(main_~array_size~0#1 < 1); 13#L566-2true call main_#t~malloc9#1.base, main_#t~malloc9#1.offset := #Ultimate.allocOnStack(4 * main_~array_size~0#1);main_~numbers~0#1.base, main_~numbers~0#1.offset := main_#t~malloc9#1.base, main_#t~malloc9#1.offset;assume { :begin_inline_SelectionSort } true;SelectionSort_#in~a#1.base, SelectionSort_#in~a#1.offset, SelectionSort_#in~array_size#1 := main_~numbers~0#1.base, main_~numbers~0#1.offset, main_~array_size~0#1;havoc SelectionSort_#t~mem4#1, SelectionSort_#t~mem5#1, SelectionSort_#t~pre3#1, SelectionSort_#t~mem6#1, SelectionSort_#t~mem7#1, SelectionSort_#t~pre2#1, SelectionSort_~j~0#1, SelectionSort_~min~0#1, SelectionSort_~temp~0#1, SelectionSort_~a#1.base, SelectionSort_~a#1.offset, SelectionSort_~array_size#1, SelectionSort_~i~0#1;SelectionSort_~a#1.base, SelectionSort_~a#1.offset := SelectionSort_#in~a#1.base, SelectionSort_#in~a#1.offset;SelectionSort_~array_size#1 := SelectionSort_#in~array_size#1;havoc SelectionSort_~i~0#1;SelectionSort_~i~0#1 := 0; 8#L550-3true [2021-12-21 22:03:40,972 INFO L793 eck$LassoCheckResult]: Loop: 8#L550-3true assume !!(SelectionSort_~i~0#1 < SelectionSort_~array_size#1 - 1);havoc SelectionSort_~j~0#1;havoc SelectionSort_~min~0#1;havoc SelectionSort_~temp~0#1;SelectionSort_~min~0#1 := SelectionSort_~i~0#1;SelectionSort_~j~0#1 := 1 + SelectionSort_~i~0#1; 14#L554-3true assume !true; 10#L554-4true call SelectionSort_#t~mem6#1 := read~int(SelectionSort_~a#1.base, SelectionSort_~a#1.offset + 4 * SelectionSort_~i~0#1, 4);SelectionSort_~temp~0#1 := SelectionSort_#t~mem6#1;havoc SelectionSort_#t~mem6#1;call SelectionSort_#t~mem7#1 := read~int(SelectionSort_~a#1.base, SelectionSort_~a#1.offset + 4 * SelectionSort_~min~0#1, 4);call write~int(SelectionSort_#t~mem7#1, SelectionSort_~a#1.base, SelectionSort_~a#1.offset + 4 * SelectionSort_~i~0#1, 4);havoc SelectionSort_#t~mem7#1;call write~int(SelectionSort_~temp~0#1, SelectionSort_~a#1.base, SelectionSort_~a#1.offset + 4 * SelectionSort_~min~0#1, 4); 15#L550-2true SelectionSort_#t~pre2#1 := 1 + SelectionSort_~i~0#1;SelectionSort_~i~0#1 := 1 + SelectionSort_~i~0#1;havoc SelectionSort_#t~pre2#1; 8#L550-3true [2021-12-21 22:03:40,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:03:40,976 INFO L85 PathProgramCache]: Analyzing trace with hash 925669, now seen corresponding path program 1 times [2021-12-21 22:03:40,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:03:40,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346653747] [2021-12-21 22:03:40,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:03:40,984 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:03:41,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:03:41,073 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 22:03:41,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:03:41,094 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 22:03:41,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:03:41,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1463796, now seen corresponding path program 1 times [2021-12-21 22:03:41,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:03:41,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253599316] [2021-12-21 22:03:41,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:03:41,097 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:03:41,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 22:03:41,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 22:03:41,142 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 22:03:41,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253599316] [2021-12-21 22:03:41,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253599316] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 22:03:41,142 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 22:03:41,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 22:03:41,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584805017] [2021-12-21 22:03:41,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 22:03:41,147 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-21 22:03:41,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 22:03:41,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-21 22:03:41,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-21 22:03:41,174 INFO L87 Difference]: Start difference. First operand has 14 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 13 states have internal predecessors, (19), 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 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2021-12-21 22:03:41,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 22:03:41,177 INFO L93 Difference]: Finished difference Result 14 states and 17 transitions. [2021-12-21 22:03:41,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-21 22:03:41,181 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 17 transitions. [2021-12-21 22:03:41,182 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-12-21 22:03:41,184 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 10 states and 13 transitions. [2021-12-21 22:03:41,184 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2021-12-21 22:03:41,185 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2021-12-21 22:03:41,185 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 13 transitions. [2021-12-21 22:03:41,185 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 22:03:41,185 INFO L681 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2021-12-21 22:03:41,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 13 transitions. [2021-12-21 22:03:41,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-12-21 22:03:41,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 10 states have (on average 1.3) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 22:03:41,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 13 transitions. [2021-12-21 22:03:41,201 INFO L704 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2021-12-21 22:03:41,202 INFO L587 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2021-12-21 22:03:41,202 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-21 22:03:41,202 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 13 transitions. [2021-12-21 22:03:41,203 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-12-21 22:03:41,203 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-21 22:03:41,203 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-21 22:03:41,204 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-12-21 22:03:41,204 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-21 22:03:41,204 INFO L791 eck$LassoCheckResult]: Stem: 36#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 37#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet8#1, main_#t~malloc9#1.base, main_#t~malloc9#1.offset, main_~array_size~0#1, main_~numbers~0#1.base, main_~numbers~0#1.offset;main_~array_size~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1; 44#L566 assume !(main_~array_size~0#1 < 1); 41#L566-2 call main_#t~malloc9#1.base, main_#t~malloc9#1.offset := #Ultimate.allocOnStack(4 * main_~array_size~0#1);main_~numbers~0#1.base, main_~numbers~0#1.offset := main_#t~malloc9#1.base, main_#t~malloc9#1.offset;assume { :begin_inline_SelectionSort } true;SelectionSort_#in~a#1.base, SelectionSort_#in~a#1.offset, SelectionSort_#in~array_size#1 := main_~numbers~0#1.base, main_~numbers~0#1.offset, main_~array_size~0#1;havoc SelectionSort_#t~mem4#1, SelectionSort_#t~mem5#1, SelectionSort_#t~pre3#1, SelectionSort_#t~mem6#1, SelectionSort_#t~mem7#1, SelectionSort_#t~pre2#1, SelectionSort_~j~0#1, SelectionSort_~min~0#1, SelectionSort_~temp~0#1, SelectionSort_~a#1.base, SelectionSort_~a#1.offset, SelectionSort_~array_size#1, SelectionSort_~i~0#1;SelectionSort_~a#1.base, SelectionSort_~a#1.offset := SelectionSort_#in~a#1.base, SelectionSort_#in~a#1.offset;SelectionSort_~array_size#1 := SelectionSort_#in~array_size#1;havoc SelectionSort_~i~0#1;SelectionSort_~i~0#1 := 0; 42#L550-3 [2021-12-21 22:03:41,204 INFO L793 eck$LassoCheckResult]: Loop: 42#L550-3 assume !!(SelectionSort_~i~0#1 < SelectionSort_~array_size#1 - 1);havoc SelectionSort_~j~0#1;havoc SelectionSort_~min~0#1;havoc SelectionSort_~temp~0#1;SelectionSort_~min~0#1 := SelectionSort_~i~0#1;SelectionSort_~j~0#1 := 1 + SelectionSort_~i~0#1; 40#L554-3 assume !(SelectionSort_~j~0#1 < SelectionSort_~array_size#1); 43#L554-4 call SelectionSort_#t~mem6#1 := read~int(SelectionSort_~a#1.base, SelectionSort_~a#1.offset + 4 * SelectionSort_~i~0#1, 4);SelectionSort_~temp~0#1 := SelectionSort_#t~mem6#1;havoc SelectionSort_#t~mem6#1;call SelectionSort_#t~mem7#1 := read~int(SelectionSort_~a#1.base, SelectionSort_~a#1.offset + 4 * SelectionSort_~min~0#1, 4);call write~int(SelectionSort_#t~mem7#1, SelectionSort_~a#1.base, SelectionSort_~a#1.offset + 4 * SelectionSort_~i~0#1, 4);havoc SelectionSort_#t~mem7#1;call write~int(SelectionSort_~temp~0#1, SelectionSort_~a#1.base, SelectionSort_~a#1.offset + 4 * SelectionSort_~min~0#1, 4); 45#L550-2 SelectionSort_#t~pre2#1 := 1 + SelectionSort_~i~0#1;SelectionSort_~i~0#1 := 1 + SelectionSort_~i~0#1;havoc SelectionSort_#t~pre2#1; 42#L550-3 [2021-12-21 22:03:41,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:03:41,205 INFO L85 PathProgramCache]: Analyzing trace with hash 925669, now seen corresponding path program 2 times [2021-12-21 22:03:41,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:03:41,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594797230] [2021-12-21 22:03:41,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:03:41,205 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:03:41,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:03:41,219 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 22:03:41,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:03:41,229 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 22:03:41,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:03:41,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1453225, now seen corresponding path program 1 times [2021-12-21 22:03:41,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:03:41,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270914054] [2021-12-21 22:03:41,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:03:41,230 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:03:41,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 22:03:41,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 22:03:41,263 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 22:03:41,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270914054] [2021-12-21 22:03:41,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270914054] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 22:03:41,264 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 22:03:41,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 22:03:41,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688844661] [2021-12-21 22:03:41,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 22:03:41,265 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-21 22:03:41,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 22:03:41,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 22:03:41,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 22:03:41,266 INFO L87 Difference]: Start difference. First operand 10 states and 13 transitions. cyclomatic complexity: 4 Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 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) [2021-12-21 22:03:41,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 22:03:41,278 INFO L93 Difference]: Finished difference Result 11 states and 14 transitions. [2021-12-21 22:03:41,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 22:03:41,279 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 14 transitions. [2021-12-21 22:03:41,279 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2021-12-21 22:03:41,280 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 11 states and 14 transitions. [2021-12-21 22:03:41,280 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2021-12-21 22:03:41,280 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2021-12-21 22:03:41,280 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 14 transitions. [2021-12-21 22:03:41,280 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 22:03:41,281 INFO L681 BuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2021-12-21 22:03:41,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 14 transitions. [2021-12-21 22:03:41,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-12-21 22:03:41,281 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) [2021-12-21 22:03:41,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 14 transitions. [2021-12-21 22:03:41,282 INFO L704 BuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2021-12-21 22:03:41,282 INFO L587 BuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2021-12-21 22:03:41,282 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-12-21 22:03:41,282 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 14 transitions. [2021-12-21 22:03:41,283 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2021-12-21 22:03:41,283 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-21 22:03:41,283 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-21 22:03:41,283 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-12-21 22:03:41,283 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-21 22:03:41,284 INFO L791 eck$LassoCheckResult]: Stem: 63#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 64#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet8#1, main_#t~malloc9#1.base, main_#t~malloc9#1.offset, main_~array_size~0#1, main_~numbers~0#1.base, main_~numbers~0#1.offset;main_~array_size~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1; 71#L566 assume !(main_~array_size~0#1 < 1); 68#L566-2 call main_#t~malloc9#1.base, main_#t~malloc9#1.offset := #Ultimate.allocOnStack(4 * main_~array_size~0#1);main_~numbers~0#1.base, main_~numbers~0#1.offset := main_#t~malloc9#1.base, main_#t~malloc9#1.offset;assume { :begin_inline_SelectionSort } true;SelectionSort_#in~a#1.base, SelectionSort_#in~a#1.offset, SelectionSort_#in~array_size#1 := main_~numbers~0#1.base, main_~numbers~0#1.offset, main_~array_size~0#1;havoc SelectionSort_#t~mem4#1, SelectionSort_#t~mem5#1, SelectionSort_#t~pre3#1, SelectionSort_#t~mem6#1, SelectionSort_#t~mem7#1, SelectionSort_#t~pre2#1, SelectionSort_~j~0#1, SelectionSort_~min~0#1, SelectionSort_~temp~0#1, SelectionSort_~a#1.base, SelectionSort_~a#1.offset, SelectionSort_~array_size#1, SelectionSort_~i~0#1;SelectionSort_~a#1.base, SelectionSort_~a#1.offset := SelectionSort_#in~a#1.base, SelectionSort_#in~a#1.offset;SelectionSort_~array_size#1 := SelectionSort_#in~array_size#1;havoc SelectionSort_~i~0#1;SelectionSort_~i~0#1 := 0; 69#L550-3 [2021-12-21 22:03:41,284 INFO L793 eck$LassoCheckResult]: Loop: 69#L550-3 assume !!(SelectionSort_~i~0#1 < SelectionSort_~array_size#1 - 1);havoc SelectionSort_~j~0#1;havoc SelectionSort_~min~0#1;havoc SelectionSort_~temp~0#1;SelectionSort_~min~0#1 := SelectionSort_~i~0#1;SelectionSort_~j~0#1 := 1 + SelectionSort_~i~0#1; 70#L554-3 assume !!(SelectionSort_~j~0#1 < SelectionSort_~array_size#1);call SelectionSort_#t~mem4#1 := read~int(SelectionSort_~a#1.base, SelectionSort_~a#1.offset + 4 * SelectionSort_~j~0#1, 4);call SelectionSort_#t~mem5#1 := read~int(SelectionSort_~a#1.base, SelectionSort_~a#1.offset + 4 * SelectionSort_~min~0#1, 4); 65#L556 assume SelectionSort_#t~mem4#1 < SelectionSort_#t~mem5#1;havoc SelectionSort_#t~mem4#1;havoc SelectionSort_#t~mem5#1;SelectionSort_~min~0#1 := SelectionSort_~j~0#1; 66#L554-2 SelectionSort_#t~pre3#1 := 1 + SelectionSort_~j~0#1;SelectionSort_~j~0#1 := 1 + SelectionSort_~j~0#1;havoc SelectionSort_#t~pre3#1; 67#L554-3 assume !(SelectionSort_~j~0#1 < SelectionSort_~array_size#1); 72#L554-4 call SelectionSort_#t~mem6#1 := read~int(SelectionSort_~a#1.base, SelectionSort_~a#1.offset + 4 * SelectionSort_~i~0#1, 4);SelectionSort_~temp~0#1 := SelectionSort_#t~mem6#1;havoc SelectionSort_#t~mem6#1;call SelectionSort_#t~mem7#1 := read~int(SelectionSort_~a#1.base, SelectionSort_~a#1.offset + 4 * SelectionSort_~min~0#1, 4);call write~int(SelectionSort_#t~mem7#1, SelectionSort_~a#1.base, SelectionSort_~a#1.offset + 4 * SelectionSort_~i~0#1, 4);havoc SelectionSort_#t~mem7#1;call write~int(SelectionSort_~temp~0#1, SelectionSort_~a#1.base, SelectionSort_~a#1.offset + 4 * SelectionSort_~min~0#1, 4); 73#L550-2 SelectionSort_#t~pre2#1 := 1 + SelectionSort_~i~0#1;SelectionSort_~i~0#1 := 1 + SelectionSort_~i~0#1;havoc SelectionSort_#t~pre2#1; 69#L550-3 [2021-12-21 22:03:41,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:03:41,284 INFO L85 PathProgramCache]: Analyzing trace with hash 925669, now seen corresponding path program 3 times [2021-12-21 22:03:41,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:03:41,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615880907] [2021-12-21 22:03:41,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:03:41,285 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:03:41,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:03:41,293 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 22:03:41,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:03:41,300 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 22:03:41,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:03:41,300 INFO L85 PathProgramCache]: Analyzing trace with hash 393067660, now seen corresponding path program 1 times [2021-12-21 22:03:41,301 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:03:41,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637557364] [2021-12-21 22:03:41,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:03:41,301 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:03:41,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:03:41,314 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 22:03:41,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:03:41,325 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 22:03:41,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:03:41,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1419424808, now seen corresponding path program 1 times [2021-12-21 22:03:41,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:03:41,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489075130] [2021-12-21 22:03:41,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:03:41,326 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:03:41,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:03:41,348 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 22:03:41,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:03:41,377 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 22:03:41,812 INFO L210 LassoAnalysis]: Preferences: [2021-12-21 22:03:41,813 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-21 22:03:41,813 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-21 22:03:41,813 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-21 22:03:41,813 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-21 22:03:41,814 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:03:41,814 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-21 22:03:41,814 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-21 22:03:41,814 INFO L133 ssoRankerPreferences]: Filename of dumped script: selectionsort-alloca-2.i_Iteration3_Lasso [2021-12-21 22:03:41,814 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-21 22:03:41,814 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-21 22:03:41,830 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:03:41,959 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer has thrown an exception: java.lang.IllegalArgumentException at de.uni_freiburg.informatik.ultimate.util.datastructures.ScopedHashMap.put(ScopedHashMap.java:331) at java.base/java.util.AbstractMap.putAll(AbstractMap.java:281) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.PureSubstitution.(PureSubstitution.java:81) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.Substitution.(Substitution.java:48) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.Substitution.apply(Substitution.java:59) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.mapelimination.MapEliminator.replaceMapReads(MapEliminator.java:518) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.mapelimination.MapEliminator.getRewrittenTransFormula(MapEliminator.java:342) at de.uni_freiburg.informatik.ultimate.lassoranker.preprocessors.MapEliminationLassoPreprocessor.process(MapEliminationLassoPreprocessor.java:111) at de.uni_freiburg.informatik.ultimate.lassoranker.variables.LassoBuilder.applyPreprocessor(LassoBuilder.java:154) at de.uni_freiburg.informatik.ultimate.lassoranker.variables.LassoBuilder.preprocess(LassoBuilder.java:262) at de.uni_freiburg.informatik.ultimate.lassoranker.LassoAnalysis.preprocess(LassoAnalysis.java:280) at de.uni_freiburg.informatik.ultimate.lassoranker.LassoAnalysis.(LassoAnalysis.java:229) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck.synthesize(LassoCheck.java:609) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck$LassoCheckResult.checkLassoTermination(LassoCheck.java:953) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck$LassoCheckResult.(LassoCheck.java:862) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck.(LassoCheck.java:252) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiCegarLoop.iterate(BuchiCegarLoop.java:457) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver.doTerminationAnalysis(BuchiAutomizerObserver.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver.finish(BuchiAutomizerObserver.java:397) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-12-21 22:03:41,965 INFO L158 Benchmark]: Toolchain (without parser) took 1687.98ms. Allocated memory was 98.6MB in the beginning and 125.8MB in the end (delta: 27.3MB). Free memory was 70.3MB in the beginning and 81.4MB in the end (delta: -11.0MB). Peak memory consumption was 38.3MB. Max. memory is 16.1GB. [2021-12-21 22:03:41,966 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 98.6MB. Free memory was 56.1MB in the beginning and 56.0MB in the end (delta: 41.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 22:03:41,966 INFO L158 Benchmark]: CACSL2BoogieTranslator took 292.64ms. Allocated memory is still 98.6MB. Free memory was 70.3MB in the beginning and 70.0MB in the end (delta: 379.9kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-21 22:03:41,967 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.07ms. Allocated memory is still 98.6MB. Free memory was 70.0MB in the beginning and 68.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-21 22:03:41,970 INFO L158 Benchmark]: Boogie Preprocessor took 33.75ms. Allocated memory is still 98.6MB. Free memory was 67.9MB in the beginning and 66.7MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-21 22:03:41,971 INFO L158 Benchmark]: RCFGBuilder took 254.50ms. Allocated memory is still 98.6MB. Free memory was 66.7MB in the beginning and 56.7MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-21 22:03:41,972 INFO L158 Benchmark]: BuchiAutomizer took 1073.20ms. Allocated memory was 98.6MB in the beginning and 125.8MB in the end (delta: 27.3MB). Free memory was 56.7MB in the beginning and 81.4MB in the end (delta: -24.7MB). Peak memory consumption was 26.9MB. Max. memory is 16.1GB. [2021-12-21 22:03:41,977 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 98.6MB. Free memory was 56.1MB in the beginning and 56.0MB in the end (delta: 41.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 292.64ms. Allocated memory is still 98.6MB. Free memory was 70.3MB in the beginning and 70.0MB in the end (delta: 379.9kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.07ms. Allocated memory is still 98.6MB. Free memory was 70.0MB in the beginning and 68.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.75ms. Allocated memory is still 98.6MB. Free memory was 67.9MB in the beginning and 66.7MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 254.50ms. Allocated memory is still 98.6MB. Free memory was 66.7MB in the beginning and 56.7MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 1073.20ms. Allocated memory was 98.6MB in the beginning and 125.8MB in the end (delta: 27.3MB). Free memory was 56.7MB in the beginning and 81.4MB in the end (delta: -24.7MB). Peak memory consumption was 26.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: - ExceptionOrErrorResult: IllegalArgumentException: null de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: IllegalArgumentException: null: de.uni_freiburg.informatik.ultimate.util.datastructures.ScopedHashMap.put(ScopedHashMap.java:331) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-12-21 22:03:42,002 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis No suitable file found in config dir /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config using search string *Termination*64bit*_Bitvector*.epf No suitable settings file found using Termination*64bit*_Bitvector ERROR: UNSUPPORTED PROPERTY Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: IllegalArgumentException: null