./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-15/array19_alloca.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-15/array19_alloca.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash aa6cff6feccdb2381551a0fc75acd9b1bca020b197764a63cc88475a7ca62ebf --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-14 15:04:41,945 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-14 15:04:41,947 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-14 15:04:41,989 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-14 15:04:41,990 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-14 15:04:41,991 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-14 15:04:41,993 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-14 15:04:41,995 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-14 15:04:41,996 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-14 15:04:42,000 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-14 15:04:42,001 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-14 15:04:42,002 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-14 15:04:42,003 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-14 15:04:42,004 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-14 15:04:42,005 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-14 15:04:42,008 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-14 15:04:42,009 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-14 15:04:42,010 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-14 15:04:42,011 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-14 15:04:42,015 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-14 15:04:42,017 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-14 15:04:42,018 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-14 15:04:42,018 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-14 15:04:42,019 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-14 15:04:42,020 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-14 15:04:42,026 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-14 15:04:42,026 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-14 15:04:42,026 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-14 15:04:42,027 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-14 15:04:42,028 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-14 15:04:42,030 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-14 15:04:42,030 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-14 15:04:42,031 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-14 15:04:42,031 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-14 15:04:42,032 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-14 15:04:42,033 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-14 15:04:42,033 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-14 15:04:42,033 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-14 15:04:42,033 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-14 15:04:42,034 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-14 15:04:42,034 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-14 15:04:42,036 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-14 15:04:42,036 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2022-07-14 15:04:42,060 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-14 15:04:42,061 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-14 15:04:42,061 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-14 15:04:42,061 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-14 15:04:42,063 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-14 15:04:42,063 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-14 15:04:42,063 INFO L138 SettingsManager]: * Use SBE=true [2022-07-14 15:04:42,063 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-07-14 15:04:42,063 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-07-14 15:04:42,064 INFO L138 SettingsManager]: * Use old map elimination=false [2022-07-14 15:04:42,064 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-07-14 15:04:42,064 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-07-14 15:04:42,065 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-07-14 15:04:42,065 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-14 15:04:42,065 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-14 15:04:42,065 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-14 15:04:42,066 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-14 15:04:42,066 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-07-14 15:04:42,066 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-07-14 15:04:42,066 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-07-14 15:04:42,066 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-14 15:04:42,067 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-07-14 15:04:42,067 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-14 15:04:42,067 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-07-14 15:04:42,067 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-14 15:04:42,067 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-14 15:04:42,068 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-14 15:04:42,068 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-14 15:04:42,069 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-07-14 15:04:42,069 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aa6cff6feccdb2381551a0fc75acd9b1bca020b197764a63cc88475a7ca62ebf [2022-07-14 15:04:42,243 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-14 15:04:42,257 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-14 15:04:42,260 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-14 15:04:42,260 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-14 15:04:42,265 INFO L275 PluginConnector]: CDTParser initialized [2022-07-14 15:04:42,266 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-15/array19_alloca.i [2022-07-14 15:04:42,314 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7488af5d/8982bda09d314b5da74b7b47c293451a/FLAGde304be9f [2022-07-14 15:04:42,773 INFO L306 CDTParser]: Found 1 translation units. [2022-07-14 15:04:42,773 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-15/array19_alloca.i [2022-07-14 15:04:42,780 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7488af5d/8982bda09d314b5da74b7b47c293451a/FLAGde304be9f [2022-07-14 15:04:43,162 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7488af5d/8982bda09d314b5da74b7b47c293451a [2022-07-14 15:04:43,164 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-14 15:04:43,165 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-14 15:04:43,166 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-14 15:04:43,166 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-14 15:04:43,169 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-14 15:04:43,170 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 03:04:43" (1/1) ... [2022-07-14 15:04:43,170 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52bc24b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 03:04:43, skipping insertion in model container [2022-07-14 15:04:43,171 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 03:04:43" (1/1) ... [2022-07-14 15:04:43,177 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-14 15:04:43,213 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-14 15:04:43,411 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 15:04:43,419 INFO L203 MainTranslator]: Completed pre-run [2022-07-14 15:04:43,472 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 15:04:43,501 INFO L208 MainTranslator]: Completed translation [2022-07-14 15:04:43,502 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 03:04:43 WrapperNode [2022-07-14 15:04:43,502 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-14 15:04:43,503 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-14 15:04:43,503 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-14 15:04:43,503 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-14 15:04:43,509 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 03:04:43" (1/1) ... [2022-07-14 15:04:43,527 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 03:04:43" (1/1) ... [2022-07-14 15:04:43,544 INFO L137 Inliner]: procedures = 151, calls = 8, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 42 [2022-07-14 15:04:43,544 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-14 15:04:43,545 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-14 15:04:43,545 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-14 15:04:43,546 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-14 15:04:43,551 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 03:04:43" (1/1) ... [2022-07-14 15:04:43,551 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 03:04:43" (1/1) ... [2022-07-14 15:04:43,558 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 03:04:43" (1/1) ... [2022-07-14 15:04:43,559 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 03:04:43" (1/1) ... [2022-07-14 15:04:43,567 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 03:04:43" (1/1) ... [2022-07-14 15:04:43,570 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 03:04:43" (1/1) ... [2022-07-14 15:04:43,571 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 03:04:43" (1/1) ... [2022-07-14 15:04:43,572 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-14 15:04:43,573 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-14 15:04:43,573 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-14 15:04:43,573 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-14 15:04:43,574 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 03:04:43" (1/1) ... [2022-07-14 15:04:43,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:04:43,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:04:43,604 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-14 15:04:43,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-07-14 15:04:43,635 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-14 15:04:43,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-14 15:04:43,635 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-14 15:04:43,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-14 15:04:43,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-14 15:04:43,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-14 15:04:43,680 INFO L234 CfgBuilder]: Building ICFG [2022-07-14 15:04:43,681 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-14 15:04:43,804 INFO L275 CfgBuilder]: Performing block encoding [2022-07-14 15:04:43,808 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-14 15:04:43,823 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-14 15:04:43,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 03:04:43 BoogieIcfgContainer [2022-07-14 15:04:43,825 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-14 15:04:43,826 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-07-14 15:04:43,826 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-07-14 15:04:43,828 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-07-14 15:04:43,829 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-14 15:04:43,829 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 14.07 03:04:43" (1/3) ... [2022-07-14 15:04:43,830 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@41d4926b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 14.07 03:04:43, skipping insertion in model container [2022-07-14 15:04:43,830 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-14 15:04:43,830 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 03:04:43" (2/3) ... [2022-07-14 15:04:43,830 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@41d4926b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 14.07 03:04:43, skipping insertion in model container [2022-07-14 15:04:43,830 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-14 15:04:43,830 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 03:04:43" (3/3) ... [2022-07-14 15:04:43,831 INFO L354 chiAutomizerObserver]: Analyzing ICFG array19_alloca.i [2022-07-14 15:04:43,900 INFO L255 stractBuchiCegarLoop]: Interprodecural is true [2022-07-14 15:04:43,900 INFO L256 stractBuchiCegarLoop]: Hoare is false [2022-07-14 15:04:43,900 INFO L257 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-07-14 15:04:43,900 INFO L258 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-07-14 15:04:43,914 INFO L259 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-07-14 15:04:43,914 INFO L260 stractBuchiCegarLoop]: Difference is false [2022-07-14 15:04:43,915 INFO L261 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-07-14 15:04:43,915 INFO L265 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-07-14 15:04:43,918 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 13 states, 12 states have (on average 1.5) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 15:04:43,931 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 3 [2022-07-14 15:04:43,936 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-14 15:04:43,937 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-14 15:04:43,941 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2022-07-14 15:04:43,941 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-07-14 15:04:43,941 INFO L287 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-07-14 15:04:43,942 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 13 states, 12 states have (on average 1.5) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 15:04:43,943 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 3 [2022-07-14 15:04:43,943 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-14 15:04:43,943 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-14 15:04:43,943 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2022-07-14 15:04:43,943 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-07-14 15:04:43,949 INFO L752 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 7#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet205#1, main_#t~malloc206#1.base, main_#t~malloc206#1.offset, main_#t~nondet208#1, main_#t~post207#1, main_#t~mem209#1, main_~i~0#1, main_~j~0#1, main_~length~0#1, main_~arr~0#1.base, main_~arr~0#1.offset;havoc main_~i~0#1;havoc main_~j~0#1;main_~length~0#1 := main_#t~nondet205#1;havoc main_#t~nondet205#1; 11#L367true assume !(main_~length~0#1 < 1); 8#L367-2true call main_#t~malloc206#1.base, main_#t~malloc206#1.offset := #Ultimate.allocOnStack(4 * main_~length~0#1);main_~arr~0#1.base, main_~arr~0#1.offset := main_#t~malloc206#1.base, main_#t~malloc206#1.offset; 5#L369true assume !(main_~arr~0#1.base == 0 && main_~arr~0#1.offset == 0);main_~i~0#1 := 0; 6#L370-3true [2022-07-14 15:04:43,949 INFO L754 eck$LassoCheckResult]: Loop: 6#L370-3true assume !!(main_~i~0#1 < main_~length~0#1);call write~int(main_#t~nondet208#1, main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet208#1; 12#L370-2true main_#t~post207#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post207#1;havoc main_#t~post207#1; 6#L370-3true [2022-07-14 15:04:43,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 15:04:43,968 INFO L85 PathProgramCache]: Analyzing trace with hash 28695753, now seen corresponding path program 1 times [2022-07-14 15:04:43,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 15:04:43,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017755468] [2022-07-14 15:04:43,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 15:04:43,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 15:04:44,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:04:44,058 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 15:04:44,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:04:44,102 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 15:04:44,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 15:04:44,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1667, now seen corresponding path program 1 times [2022-07-14 15:04:44,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 15:04:44,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151976997] [2022-07-14 15:04:44,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 15:04:44,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 15:04:44,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:04:44,123 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 15:04:44,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:04:44,144 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 15:04:44,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 15:04:44,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1806815563, now seen corresponding path program 1 times [2022-07-14 15:04:44,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 15:04:44,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887275479] [2022-07-14 15:04:44,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 15:04:44,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 15:04:44,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:04:44,179 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 15:04:44,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:04:44,199 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 15:04:44,394 INFO L210 LassoAnalysis]: Preferences: [2022-07-14 15:04:44,394 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-14 15:04:44,394 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-14 15:04:44,394 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-14 15:04:44,394 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-14 15:04:44,395 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:04:44,395 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-14 15:04:44,395 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-14 15:04:44,395 INFO L133 ssoRankerPreferences]: Filename of dumped script: array19_alloca.i_Iteration1_Lasso [2022-07-14 15:04:44,395 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-14 15:04:44,395 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-14 15:04:44,407 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 15:04:44,411 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 15:04:44,414 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 15:04:44,416 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 15:04:44,502 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 15:04:44,503 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 15:04:44,505 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 15:04:44,507 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 15:04:44,649 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-14 15:04:44,652 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-14 15:04:44,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:04:44,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:04:44,656 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-14 15:04:44,657 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2022-07-14 15:04:44,658 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-14 15:04:44,664 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-14 15:04:44,665 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-14 15:04:44,665 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-14 15:04:44,665 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-14 15:04:44,665 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-14 15:04:44,667 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-14 15:04:44,667 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-14 15:04:44,679 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-14 15:04:44,714 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2022-07-14 15:04:44,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:04:44,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:04:44,715 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-14 15:04:44,729 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-14 15:04:44,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2022-07-14 15:04:44,735 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-14 15:04:44,736 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-14 15:04:44,736 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-14 15:04:44,736 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-14 15:04:44,738 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-07-14 15:04:44,738 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-07-14 15:04:44,755 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-14 15:04:44,772 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2022-07-14 15:04:44,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:04:44,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:04:44,774 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-14 15:04:44,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-07-14 15:04:44,777 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-14 15:04:44,784 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-14 15:04:44,784 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-14 15:04:44,785 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-14 15:04:44,785 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-14 15:04:44,785 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-14 15:04:44,786 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-14 15:04:44,786 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-14 15:04:44,799 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-14 15:04:44,815 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2022-07-14 15:04:44,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:04:44,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:04:44,817 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-14 15:04:44,818 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2022-07-14 15:04:44,820 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-14 15:04:44,827 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-14 15:04:44,827 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-14 15:04:44,827 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-14 15:04:44,827 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-14 15:04:44,833 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-07-14 15:04:44,834 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-07-14 15:04:44,852 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-14 15:04:44,883 INFO L443 ModelExtractionUtils]: Simplification made 9 calls to the SMT solver. [2022-07-14 15:04:44,883 INFO L444 ModelExtractionUtils]: 7 out of 22 variables were initially zero. Simplification set additionally 10 variables to zero. [2022-07-14 15:04:44,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:04:44,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:04:44,886 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-14 15:04:44,887 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2022-07-14 15:04:44,895 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-14 15:04:44,916 INFO L438 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2022-07-14 15:04:44,917 INFO L513 LassoAnalysis]: Proved termination. [2022-07-14 15:04:44,917 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select #length ULTIMATE.start_main_~arr~0#1.base)_1, ULTIMATE.start_main_~i~0#1) = 1*v_rep(select #length ULTIMATE.start_main_~arr~0#1.base)_1 - 2*ULTIMATE.start_main_~i~0#1 Supporting invariants [-2*ULTIMATE.start_main_~length~0#1 + 1*v_rep(select #length ULTIMATE.start_main_#t~malloc206#1.base)_1 >= 0] [2022-07-14 15:04:44,962 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2022-07-14 15:04:44,972 INFO L293 tatePredicateManager]: 2 out of 4 supporting invariants were superfluous and have been removed [2022-07-14 15:04:45,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 15:04:45,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 15:04:45,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-14 15:04:45,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 15:04:45,088 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2022-07-14 15:04:45,101 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-14 15:04:45,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 15:04:45,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-14 15:04:45,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 15:04:45,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 15:04:45,183 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.3 stem predicates 2 loop predicates [2022-07-14 15:04:45,183 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 13 states, 12 states have (on average 1.5) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 15:04:45,243 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 13 states, 12 states have (on average 1.5) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 27 states and 37 transitions. Complement of second has 10 states. [2022-07-14 15:04:45,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 3 stem states 2 non-accepting loop states 1 accepting loop states [2022-07-14 15:04:45,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 15:04:45,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 24 transitions. [2022-07-14 15:04:45,249 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 24 transitions. Stem has 5 letters. Loop has 2 letters. [2022-07-14 15:04:45,250 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 15:04:45,250 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 24 transitions. Stem has 7 letters. Loop has 2 letters. [2022-07-14 15:04:45,250 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 15:04:45,250 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 24 transitions. Stem has 5 letters. Loop has 4 letters. [2022-07-14 15:04:45,250 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 15:04:45,251 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 37 transitions. [2022-07-14 15:04:45,252 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2022-07-14 15:04:45,255 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 10 states and 13 transitions. [2022-07-14 15:04:45,255 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2022-07-14 15:04:45,255 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2022-07-14 15:04:45,256 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 13 transitions. [2022-07-14 15:04:45,256 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-14 15:04:45,256 INFO L369 hiAutomatonCegarLoop]: Abstraction has 10 states and 13 transitions. [2022-07-14 15:04:45,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 13 transitions. [2022-07-14 15:04:45,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2022-07-14 15:04:45,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 10 states have (on average 1.3) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 15:04:45,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 13 transitions. [2022-07-14 15:04:45,273 INFO L392 hiAutomatonCegarLoop]: Abstraction has 10 states and 13 transitions. [2022-07-14 15:04:45,273 INFO L374 stractBuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2022-07-14 15:04:45,273 INFO L287 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-07-14 15:04:45,273 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 13 transitions. [2022-07-14 15:04:45,273 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2022-07-14 15:04:45,273 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-14 15:04:45,273 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-14 15:04:45,274 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-14 15:04:45,274 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2022-07-14 15:04:45,274 INFO L752 eck$LassoCheckResult]: Stem: 117#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 118#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet205#1, main_#t~malloc206#1.base, main_#t~malloc206#1.offset, main_#t~nondet208#1, main_#t~post207#1, main_#t~mem209#1, main_~i~0#1, main_~j~0#1, main_~length~0#1, main_~arr~0#1.base, main_~arr~0#1.offset;havoc main_~i~0#1;havoc main_~j~0#1;main_~length~0#1 := main_#t~nondet205#1;havoc main_#t~nondet205#1; 123#L367 assume !(main_~length~0#1 < 1); 119#L367-2 call main_#t~malloc206#1.base, main_#t~malloc206#1.offset := #Ultimate.allocOnStack(4 * main_~length~0#1);main_~arr~0#1.base, main_~arr~0#1.offset := main_#t~malloc206#1.base, main_#t~malloc206#1.offset; 120#L369 assume !(main_~arr~0#1.base == 0 && main_~arr~0#1.offset == 0);main_~i~0#1 := 0; 121#L370-3 assume !(main_~i~0#1 < main_~length~0#1); 122#L370-4 main_~j~0#1 := 0; 116#L374-2 [2022-07-14 15:04:45,274 INFO L754 eck$LassoCheckResult]: Loop: 116#L374-2 assume !!(0 <= main_~j~0#1 && main_~j~0#1 < main_~length~0#1);call main_#t~mem209#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~j~0#1, 4);main_~j~0#1 := main_~j~0#1 + (1 + main_#t~mem209#1);havoc main_#t~mem209#1; 116#L374-2 [2022-07-14 15:04:45,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 15:04:45,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1806815505, now seen corresponding path program 1 times [2022-07-14 15:04:45,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 15:04:45,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448673563] [2022-07-14 15:04:45,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 15:04:45,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 15:04:45,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 15:04:45,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 15:04:45,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 15:04:45,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448673563] [2022-07-14 15:04:45,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448673563] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 15:04:45,330 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 15:04:45,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-14 15:04:45,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498245738] [2022-07-14 15:04:45,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 15:04:45,332 INFO L757 eck$LassoCheckResult]: stem already infeasible [2022-07-14 15:04:45,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 15:04:45,333 INFO L85 PathProgramCache]: Analyzing trace with hash 68, now seen corresponding path program 1 times [2022-07-14 15:04:45,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 15:04:45,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109869564] [2022-07-14 15:04:45,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 15:04:45,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 15:04:45,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:04:45,337 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 15:04:45,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:04:45,340 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 15:04:45,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 15:04:45,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-14 15:04:45,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-14 15:04:45,367 INFO L87 Difference]: Start difference. First operand 10 states and 13 transitions. cyclomatic complexity: 5 Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 15:04:45,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 15:04:45,385 INFO L93 Difference]: Finished difference Result 11 states and 13 transitions. [2022-07-14 15:04:45,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-14 15:04:45,386 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 13 transitions. [2022-07-14 15:04:45,388 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2022-07-14 15:04:45,388 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 11 states and 13 transitions. [2022-07-14 15:04:45,388 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2022-07-14 15:04:45,388 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2022-07-14 15:04:45,389 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 13 transitions. [2022-07-14 15:04:45,389 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-14 15:04:45,389 INFO L369 hiAutomatonCegarLoop]: Abstraction has 11 states and 13 transitions. [2022-07-14 15:04:45,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 13 transitions. [2022-07-14 15:04:45,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 10. [2022-07-14 15:04:45,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 10 states have (on average 1.2) internal successors, (12), 9 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 15:04:45,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2022-07-14 15:04:45,393 INFO L392 hiAutomatonCegarLoop]: Abstraction has 10 states and 12 transitions. [2022-07-14 15:04:45,393 INFO L374 stractBuchiCegarLoop]: Abstraction has 10 states and 12 transitions. [2022-07-14 15:04:45,393 INFO L287 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-07-14 15:04:45,393 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 12 transitions. [2022-07-14 15:04:45,395 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2022-07-14 15:04:45,398 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-14 15:04:45,398 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-14 15:04:45,399 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 15:04:45,399 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2022-07-14 15:04:45,399 INFO L752 eck$LassoCheckResult]: Stem: 145#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 146#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet205#1, main_#t~malloc206#1.base, main_#t~malloc206#1.offset, main_#t~nondet208#1, main_#t~post207#1, main_#t~mem209#1, main_~i~0#1, main_~j~0#1, main_~length~0#1, main_~arr~0#1.base, main_~arr~0#1.offset;havoc main_~i~0#1;havoc main_~j~0#1;main_~length~0#1 := main_#t~nondet205#1;havoc main_#t~nondet205#1; 151#L367 assume !(main_~length~0#1 < 1); 147#L367-2 call main_#t~malloc206#1.base, main_#t~malloc206#1.offset := #Ultimate.allocOnStack(4 * main_~length~0#1);main_~arr~0#1.base, main_~arr~0#1.offset := main_#t~malloc206#1.base, main_#t~malloc206#1.offset; 148#L369 assume !(main_~arr~0#1.base == 0 && main_~arr~0#1.offset == 0);main_~i~0#1 := 0; 149#L370-3 assume !!(main_~i~0#1 < main_~length~0#1);call write~int(main_#t~nondet208#1, main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet208#1; 152#L370-2 main_#t~post207#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post207#1;havoc main_#t~post207#1; 153#L370-3 assume !(main_~i~0#1 < main_~length~0#1); 150#L370-4 main_~j~0#1 := 0; 144#L374-2 [2022-07-14 15:04:45,399 INFO L754 eck$LassoCheckResult]: Loop: 144#L374-2 assume !!(0 <= main_~j~0#1 && main_~j~0#1 < main_~length~0#1);call main_#t~mem209#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~j~0#1, 4);main_~j~0#1 := main_~j~0#1 + (1 + main_#t~mem209#1);havoc main_#t~mem209#1; 144#L374-2 [2022-07-14 15:04:45,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 15:04:45,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1182969107, now seen corresponding path program 1 times [2022-07-14 15:04:45,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 15:04:45,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538311102] [2022-07-14 15:04:45,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 15:04:45,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 15:04:45,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:04:45,422 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 15:04:45,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:04:45,439 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 15:04:45,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 15:04:45,441 INFO L85 PathProgramCache]: Analyzing trace with hash 68, now seen corresponding path program 2 times [2022-07-14 15:04:45,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 15:04:45,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266070889] [2022-07-14 15:04:45,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 15:04:45,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 15:04:45,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:04:45,446 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 15:04:45,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:04:45,452 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 15:04:45,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 15:04:45,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1982663310, now seen corresponding path program 1 times [2022-07-14 15:04:45,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 15:04:45,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494610619] [2022-07-14 15:04:45,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 15:04:45,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 15:04:45,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:04:45,470 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 15:04:45,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:04:45,482 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 15:04:45,659 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 14.07 03:04:45 BoogieIcfgContainer [2022-07-14 15:04:45,660 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-07-14 15:04:45,660 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-14 15:04:45,660 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-14 15:04:45,660 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-14 15:04:45,660 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 03:04:43" (3/4) ... [2022-07-14 15:04:45,662 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2022-07-14 15:04:45,680 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-14 15:04:45,681 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-14 15:04:45,681 INFO L158 Benchmark]: Toolchain (without parser) took 2516.12ms. Allocated memory was 102.8MB in the beginning and 125.8MB in the end (delta: 23.1MB). Free memory was 82.0MB in the beginning and 53.3MB in the end (delta: 28.7MB). Peak memory consumption was 50.1MB. Max. memory is 16.1GB. [2022-07-14 15:04:45,681 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 102.8MB. Free memory was 59.1MB in the beginning and 59.1MB in the end (delta: 72.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-14 15:04:45,682 INFO L158 Benchmark]: CACSL2BoogieTranslator took 336.02ms. Allocated memory is still 102.8MB. Free memory was 81.7MB in the beginning and 69.9MB in the end (delta: 11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-14 15:04:45,682 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.83ms. Allocated memory is still 102.8MB. Free memory was 69.9MB in the beginning and 67.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-14 15:04:45,682 INFO L158 Benchmark]: Boogie Preprocessor took 26.93ms. Allocated memory is still 102.8MB. Free memory was 67.9MB in the beginning and 66.7MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-14 15:04:45,682 INFO L158 Benchmark]: RCFGBuilder took 252.43ms. Allocated memory is still 102.8MB. Free memory was 66.7MB in the beginning and 57.4MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-14 15:04:45,683 INFO L158 Benchmark]: BuchiAutomizer took 1833.70ms. Allocated memory was 102.8MB in the beginning and 125.8MB in the end (delta: 23.1MB). Free memory was 57.4MB in the beginning and 54.3MB in the end (delta: 3.1MB). Peak memory consumption was 28.9MB. Max. memory is 16.1GB. [2022-07-14 15:04:45,683 INFO L158 Benchmark]: Witness Printer took 20.73ms. Allocated memory is still 125.8MB. Free memory was 54.3MB in the beginning and 53.3MB in the end (delta: 972.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-14 15:04:45,684 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 102.8MB. Free memory was 59.1MB in the beginning and 59.1MB in the end (delta: 72.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 336.02ms. Allocated memory is still 102.8MB. Free memory was 81.7MB in the beginning and 69.9MB in the end (delta: 11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.83ms. Allocated memory is still 102.8MB. Free memory was 69.9MB in the beginning and 67.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 26.93ms. Allocated memory is still 102.8MB. Free memory was 67.9MB in the beginning and 66.7MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 252.43ms. Allocated memory is still 102.8MB. Free memory was 66.7MB in the beginning and 57.4MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 1833.70ms. Allocated memory was 102.8MB in the beginning and 125.8MB in the end (delta: 23.1MB). Free memory was 57.4MB in the beginning and 54.3MB in the end (delta: 3.1MB). Peak memory consumption was 28.9MB. Max. memory is 16.1GB. * Witness Printer took 20.73ms. Allocated memory is still 125.8MB. Free memory was 54.3MB in the beginning and 53.3MB in the end (delta: 972.8kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 2 terminating modules (1 trivial, 1 deterministic, 0 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function -2 * i + unknown-#length-unknown[arr] and consists of 7 locations. 1 modules have a trivial ranking function, the largest among these consists of 4 locations. The remainder module has 10 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.7s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 1.3s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 16 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 16 mSDsluCounter, 22 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 9 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 38 IncrementalHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 13 mSDtfsCounter, 38 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU1 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital99 mio100 ax100 hnf100 lsp93 ukn83 mio100 lsp61 div100 bol100 ite100 ukn100 eq166 hnf91 smp100 dnf100 smp100 tf100 neg100 sie102 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 41ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 374]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=1} State at position 1 is {j=0, arr=2, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@12ba2792=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3e0b01df=2, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3e0b01df=0, NULL=1, \result=0, length=1, i=1, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@1c32cf1d=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTArraySubscriptExpression@68d46314=0, arr=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@285ac9fd=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 374]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L365] int i, j; [L366] int length = __VERIFIER_nondet_int(); [L367] COND FALSE !(length < 1) [L368] int *arr = __builtin_alloca(length*sizeof(int)); [L369] COND FALSE !(!arr) [L370] i=0 [L370] COND TRUE i