./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 791161d1 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-?-791161d [2022-07-23 14:31:42,802 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-23 14:31:42,811 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-23 14:31:42,857 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-23 14:31:42,858 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-23 14:31:42,859 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-23 14:31:42,862 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-23 14:31:42,864 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-23 14:31:42,866 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-23 14:31:42,870 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-23 14:31:42,871 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-23 14:31:42,873 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-23 14:31:42,874 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-23 14:31:42,876 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-23 14:31:42,877 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-23 14:31:42,880 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-23 14:31:42,881 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-23 14:31:42,883 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-23 14:31:42,884 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-23 14:31:42,890 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-23 14:31:42,892 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-23 14:31:42,893 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-23 14:31:42,894 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-23 14:31:42,895 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-23 14:31:42,896 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-23 14:31:42,901 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-23 14:31:42,902 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-23 14:31:42,902 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-23 14:31:42,904 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-23 14:31:42,904 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-23 14:31:42,905 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-23 14:31:42,906 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-23 14:31:42,907 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-23 14:31:42,908 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-23 14:31:42,909 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-23 14:31:42,909 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-23 14:31:42,910 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-23 14:31:42,910 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-23 14:31:42,910 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-23 14:31:42,911 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-23 14:31:42,911 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-23 14:31:42,913 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-23 14:31:42,915 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2022-07-23 14:31:42,940 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-23 14:31:42,941 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-23 14:31:42,941 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-23 14:31:42,941 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-23 14:31:42,943 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-23 14:31:42,943 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-23 14:31:42,943 INFO L138 SettingsManager]: * Use SBE=true [2022-07-23 14:31:42,944 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-07-23 14:31:42,944 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-07-23 14:31:42,945 INFO L138 SettingsManager]: * Use old map elimination=false [2022-07-23 14:31:42,945 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-07-23 14:31:42,945 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-07-23 14:31:42,945 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-07-23 14:31:42,945 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-23 14:31:42,946 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-23 14:31:42,946 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-23 14:31:42,947 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-23 14:31:42,947 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-07-23 14:31:42,947 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-07-23 14:31:42,947 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-07-23 14:31:42,948 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-23 14:31:42,948 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-07-23 14:31:42,948 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-23 14:31:42,948 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-07-23 14:31:42,948 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-23 14:31:42,949 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-23 14:31:42,949 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-23 14:31:42,949 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-23 14:31:42,951 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-07-23 14:31:42,951 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aa6cff6feccdb2381551a0fc75acd9b1bca020b197764a63cc88475a7ca62ebf [2022-07-23 14:31:43,206 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-23 14:31:43,235 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-23 14:31:43,237 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-23 14:31:43,238 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-23 14:31:43,239 INFO L275 PluginConnector]: CDTParser initialized [2022-07-23 14:31:43,240 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-15/array19_alloca.i [2022-07-23 14:31:43,315 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a7064699/4d39a1ab77c04b1c843075f76df5b608/FLAGdfa7aec67 [2022-07-23 14:31:43,743 INFO L306 CDTParser]: Found 1 translation units. [2022-07-23 14:31:43,746 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-15/array19_alloca.i [2022-07-23 14:31:43,756 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a7064699/4d39a1ab77c04b1c843075f76df5b608/FLAGdfa7aec67 [2022-07-23 14:31:44,114 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a7064699/4d39a1ab77c04b1c843075f76df5b608 [2022-07-23 14:31:44,116 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-23 14:31:44,117 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-23 14:31:44,119 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-23 14:31:44,120 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-23 14:31:44,123 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-23 14:31:44,123 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 02:31:44" (1/1) ... [2022-07-23 14:31:44,124 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f017514 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:31:44, skipping insertion in model container [2022-07-23 14:31:44,125 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 02:31:44" (1/1) ... [2022-07-23 14:31:44,131 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-23 14:31:44,178 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-23 14:31:44,422 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 14:31:44,432 INFO L203 MainTranslator]: Completed pre-run [2022-07-23 14:31:44,489 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 14:31:44,519 INFO L208 MainTranslator]: Completed translation [2022-07-23 14:31:44,520 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:31:44 WrapperNode [2022-07-23 14:31:44,520 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-23 14:31:44,521 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-23 14:31:44,521 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-23 14:31:44,521 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-23 14:31:44,532 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:31:44" (1/1) ... [2022-07-23 14:31:44,551 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:31:44" (1/1) ... [2022-07-23 14:31:44,572 INFO L137 Inliner]: procedures = 151, calls = 8, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 42 [2022-07-23 14:31:44,573 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-23 14:31:44,574 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-23 14:31:44,574 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-23 14:31:44,574 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-23 14:31:44,581 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:31:44" (1/1) ... [2022-07-23 14:31:44,581 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:31:44" (1/1) ... [2022-07-23 14:31:44,591 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:31:44" (1/1) ... [2022-07-23 14:31:44,591 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:31:44" (1/1) ... [2022-07-23 14:31:44,595 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:31:44" (1/1) ... [2022-07-23 14:31:44,603 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:31:44" (1/1) ... [2022-07-23 14:31:44,605 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:31:44" (1/1) ... [2022-07-23 14:31:44,606 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-23 14:31:44,608 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-23 14:31:44,614 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-23 14:31:44,614 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-23 14:31:44,615 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:31:44" (1/1) ... [2022-07-23 14:31:44,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:31:44,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:31:44,643 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) [2022-07-23 14:31:44,650 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 [2022-07-23 14:31:44,687 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-23 14:31:44,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-23 14:31:44,687 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-23 14:31:44,690 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-23 14:31:44,690 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-23 14:31:44,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-23 14:31:44,754 INFO L234 CfgBuilder]: Building ICFG [2022-07-23 14:31:44,755 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-23 14:31:44,837 INFO L275 CfgBuilder]: Performing block encoding [2022-07-23 14:31:44,842 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-23 14:31:44,842 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-23 14:31:44,844 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 02:31:44 BoogieIcfgContainer [2022-07-23 14:31:44,844 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-23 14:31:44,845 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-07-23 14:31:44,845 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-07-23 14:31:44,848 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-07-23 14:31:44,849 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-23 14:31:44,849 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 23.07 02:31:44" (1/3) ... [2022-07-23 14:31:44,850 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@26625e2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.07 02:31:44, skipping insertion in model container [2022-07-23 14:31:44,850 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-23 14:31:44,851 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:31:44" (2/3) ... [2022-07-23 14:31:44,851 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@26625e2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.07 02:31:44, skipping insertion in model container [2022-07-23 14:31:44,851 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-23 14:31:44,851 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 02:31:44" (3/3) ... [2022-07-23 14:31:44,852 INFO L354 chiAutomizerObserver]: Analyzing ICFG array19_alloca.i [2022-07-23 14:31:44,897 INFO L255 stractBuchiCegarLoop]: Interprodecural is true [2022-07-23 14:31:44,897 INFO L256 stractBuchiCegarLoop]: Hoare is false [2022-07-23 14:31:44,897 INFO L257 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-07-23 14:31:44,898 INFO L258 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-07-23 14:31:44,898 INFO L259 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-07-23 14:31:44,898 INFO L260 stractBuchiCegarLoop]: Difference is false [2022-07-23 14:31:44,898 INFO L261 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-07-23 14:31:44,898 INFO L265 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-07-23 14:31:44,901 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) [2022-07-23 14:31:44,917 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 3 [2022-07-23 14:31:44,917 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-23 14:31:44,917 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-23 14:31:44,922 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2022-07-23 14:31:44,922 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-07-23 14:31:44,922 INFO L287 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-07-23 14:31:44,922 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) [2022-07-23 14:31:44,924 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 3 [2022-07-23 14:31:44,924 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-23 14:31:44,924 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-23 14:31:44,924 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2022-07-23 14:31:44,924 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-07-23 14:31:44,930 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 [2022-07-23 14:31:44,931 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 [2022-07-23 14:31:44,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:31:44,937 INFO L85 PathProgramCache]: Analyzing trace with hash 28695753, now seen corresponding path program 1 times [2022-07-23 14:31:44,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:31:44,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125640726] [2022-07-23 14:31:44,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:31:44,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:31:45,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:31:45,031 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:31:45,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:31:45,080 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:31:45,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:31:45,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1667, now seen corresponding path program 1 times [2022-07-23 14:31:45,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:31:45,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320766375] [2022-07-23 14:31:45,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:31:45,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:31:45,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:31:45,108 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:31:45,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:31:45,127 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:31:45,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:31:45,129 INFO L85 PathProgramCache]: Analyzing trace with hash 1806815563, now seen corresponding path program 1 times [2022-07-23 14:31:45,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:31:45,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648084724] [2022-07-23 14:31:45,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:31:45,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:31:45,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:31:45,162 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:31:45,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:31:45,191 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:31:45,571 INFO L210 LassoAnalysis]: Preferences: [2022-07-23 14:31:45,572 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-23 14:31:45,572 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-23 14:31:45,573 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-23 14:31:45,573 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-23 14:31:45,573 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:31:45,573 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-23 14:31:45,573 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-23 14:31:45,573 INFO L133 ssoRankerPreferences]: Filename of dumped script: array19_alloca.i_Iteration1_Lasso [2022-07-23 14:31:45,574 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-23 14:31:45,574 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-23 14:31:45,595 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:31:45,601 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:31:45,610 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:31:45,613 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:31:45,747 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:31:45,750 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:31:45,753 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:31:45,757 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:31:45,960 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-23 14:31:45,964 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-23 14:31:45,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:31:45,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:31:45,971 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) [2022-07-23 14:31:45,982 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 [2022-07-23 14:31:45,990 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 14:31:45,990 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-23 14:31:45,990 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 [2022-07-23 14:31:45,991 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 14:31:45,991 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 14:31:45,991 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 14:31:45,993 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-23 14:31:45,993 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-23 14:31:45,999 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-23 14:31:46,020 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 [2022-07-23 14:31:46,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:31:46,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:31:46,022 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) [2022-07-23 14:31:46,023 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 [2022-07-23 14:31:46,030 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 [2022-07-23 14:31:46,035 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 14:31:46,036 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 14:31:46,036 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 14:31:46,036 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 14:31:46,039 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-07-23 14:31:46,039 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-07-23 14:31:46,050 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-23 14:31:46,072 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 [2022-07-23 14:31:46,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:31:46,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:31:46,073 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) [2022-07-23 14:31:46,076 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 [2022-07-23 14:31:46,076 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 [2022-07-23 14:31:46,084 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 14:31:46,084 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-23 14:31:46,084 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 14:31:46,084 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 14:31:46,084 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 14:31:46,085 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-23 14:31:46,085 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-23 14:31:46,093 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-23 14:31:46,109 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 [2022-07-23 14:31:46,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:31:46,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:31:46,111 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) [2022-07-23 14:31:46,112 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 [2022-07-23 14:31:46,113 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 [2022-07-23 14:31:46,122 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 14:31:46,122 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 14:31:46,122 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 14:31:46,122 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 14:31:46,135 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-07-23 14:31:46,137 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-07-23 14:31:46,159 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-23 14:31:46,178 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2022-07-23 14:31:46,178 INFO L444 ModelExtractionUtils]: 7 out of 22 variables were initially zero. Simplification set additionally 12 variables to zero. [2022-07-23 14:31:46,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:31:46,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:31:46,187 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) [2022-07-23 14:31:46,216 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-23 14:31:46,224 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 [2022-07-23 14:31:46,226 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2022-07-23 14:31:46,227 INFO L513 LassoAnalysis]: Proved termination. [2022-07-23 14:31:46,227 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1, ULTIMATE.start_main_~length~0#1) = -1*ULTIMATE.start_main_~i~0#1 + 1*ULTIMATE.start_main_~length~0#1 Supporting invariants [] [2022-07-23 14:31:46,255 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 [2022-07-23 14:31:46,265 INFO L293 tatePredicateManager]: 3 out of 3 supporting invariants were superfluous and have been removed [2022-07-23 14:31:46,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:31:46,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:31:46,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-23 14:31:46,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:31:46,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:31:46,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-23 14:31:46,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:31:46,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 14:31:46,371 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-07-23 14:31:46,372 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 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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) [2022-07-23 14:31:46,449 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 [2022-07-23 14:31:46,458 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 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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 30 states and 40 transitions. Complement of second has 7 states. [2022-07-23 14:31:46,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-07-23 14:31:46,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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) [2022-07-23 14:31:46,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 27 transitions. [2022-07-23 14:31:46,467 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 27 transitions. Stem has 5 letters. Loop has 2 letters. [2022-07-23 14:31:46,468 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:31:46,468 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 27 transitions. Stem has 7 letters. Loop has 2 letters. [2022-07-23 14:31:46,468 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:31:46,468 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 27 transitions. Stem has 5 letters. Loop has 4 letters. [2022-07-23 14:31:46,469 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:31:46,469 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 30 states and 40 transitions. [2022-07-23 14:31:46,472 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2022-07-23 14:31:46,475 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 30 states to 10 states and 13 transitions. [2022-07-23 14:31:46,476 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2022-07-23 14:31:46,476 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2022-07-23 14:31:46,476 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 13 transitions. [2022-07-23 14:31:46,477 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-23 14:31:46,477 INFO L369 hiAutomatonCegarLoop]: Abstraction has 10 states and 13 transitions. [2022-07-23 14:31:46,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 13 transitions. [2022-07-23 14:31:46,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2022-07-23 14:31:46,497 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) [2022-07-23 14:31:46,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 13 transitions. [2022-07-23 14:31:46,498 INFO L392 hiAutomatonCegarLoop]: Abstraction has 10 states and 13 transitions. [2022-07-23 14:31:46,498 INFO L374 stractBuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2022-07-23 14:31:46,498 INFO L287 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-07-23 14:31:46,499 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 13 transitions. [2022-07-23 14:31:46,499 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2022-07-23 14:31:46,499 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-23 14:31:46,499 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-23 14:31:46,500 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-23 14:31:46,500 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2022-07-23 14:31:46,500 INFO L752 eck$LassoCheckResult]: Stem: 106#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 107#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; 110#L367 assume !(main_~length~0#1 < 1); 104#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; 105#L369 assume !(main_~arr~0#1.base == 0 && main_~arr~0#1.offset == 0);main_~i~0#1 := 0; 108#L370-3 assume !(main_~i~0#1 < main_~length~0#1); 109#L370-4 main_~j~0#1 := 0; 103#L374-2 [2022-07-23 14:31:46,500 INFO L754 eck$LassoCheckResult]: Loop: 103#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; 103#L374-2 [2022-07-23 14:31:46,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:31:46,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1806815505, now seen corresponding path program 1 times [2022-07-23 14:31:46,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:31:46,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160187421] [2022-07-23 14:31:46,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:31:46,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:31:46,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:31:46,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 14:31:46,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 14:31:46,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160187421] [2022-07-23 14:31:46,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160187421] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 14:31:46,544 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 14:31:46,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-23 14:31:46,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867650996] [2022-07-23 14:31:46,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 14:31:46,547 INFO L757 eck$LassoCheckResult]: stem already infeasible [2022-07-23 14:31:46,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:31:46,548 INFO L85 PathProgramCache]: Analyzing trace with hash 68, now seen corresponding path program 1 times [2022-07-23 14:31:46,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:31:46,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141128404] [2022-07-23 14:31:46,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:31:46,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:31:46,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:31:46,553 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:31:46,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:31:46,557 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:31:46,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 14:31:46,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-23 14:31:46,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-23 14:31:46,601 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) [2022-07-23 14:31:46,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 14:31:46,619 INFO L93 Difference]: Finished difference Result 11 states and 13 transitions. [2022-07-23 14:31:46,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-23 14:31:46,620 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 13 transitions. [2022-07-23 14:31:46,621 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2022-07-23 14:31:46,621 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 11 states and 13 transitions. [2022-07-23 14:31:46,622 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2022-07-23 14:31:46,622 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2022-07-23 14:31:46,622 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 13 transitions. [2022-07-23 14:31:46,622 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-23 14:31:46,622 INFO L369 hiAutomatonCegarLoop]: Abstraction has 11 states and 13 transitions. [2022-07-23 14:31:46,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 13 transitions. [2022-07-23 14:31:46,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 10. [2022-07-23 14:31:46,623 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) [2022-07-23 14:31:46,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2022-07-23 14:31:46,623 INFO L392 hiAutomatonCegarLoop]: Abstraction has 10 states and 12 transitions. [2022-07-23 14:31:46,624 INFO L374 stractBuchiCegarLoop]: Abstraction has 10 states and 12 transitions. [2022-07-23 14:31:46,624 INFO L287 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-07-23 14:31:46,624 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 12 transitions. [2022-07-23 14:31:46,624 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2022-07-23 14:31:46,624 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-23 14:31:46,624 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-23 14:31:46,625 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 14:31:46,625 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2022-07-23 14:31:46,625 INFO L752 eck$LassoCheckResult]: Stem: 132#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 133#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet205#1, main_#t~malloc206#1.base, main_#t~malloc206#1.offset, main_#t~nondet208#1, main_#t~post207#1, main_#t~mem209#1, main_~i~0#1, main_~j~0#1, main_~length~0#1, main_~arr~0#1.base, main_~arr~0#1.offset;havoc main_~i~0#1;havoc main_~j~0#1;main_~length~0#1 := main_#t~nondet205#1;havoc main_#t~nondet205#1; 138#L367 assume !(main_~length~0#1 < 1); 134#L367-2 call main_#t~malloc206#1.base, main_#t~malloc206#1.offset := #Ultimate.allocOnStack(4 * main_~length~0#1);main_~arr~0#1.base, main_~arr~0#1.offset := main_#t~malloc206#1.base, main_#t~malloc206#1.offset; 135#L369 assume !(main_~arr~0#1.base == 0 && main_~arr~0#1.offset == 0);main_~i~0#1 := 0; 136#L370-3 assume !!(main_~i~0#1 < main_~length~0#1);call write~int(main_#t~nondet208#1, main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet208#1; 139#L370-2 main_#t~post207#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post207#1;havoc main_#t~post207#1; 140#L370-3 assume !(main_~i~0#1 < main_~length~0#1); 137#L370-4 main_~j~0#1 := 0; 131#L374-2 [2022-07-23 14:31:46,625 INFO L754 eck$LassoCheckResult]: Loop: 131#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; 131#L374-2 [2022-07-23 14:31:46,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:31:46,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1182969107, now seen corresponding path program 1 times [2022-07-23 14:31:46,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:31:46,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368147356] [2022-07-23 14:31:46,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:31:46,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:31:46,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:31:46,640 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:31:46,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:31:46,650 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:31:46,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:31:46,651 INFO L85 PathProgramCache]: Analyzing trace with hash 68, now seen corresponding path program 2 times [2022-07-23 14:31:46,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:31:46,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718138214] [2022-07-23 14:31:46,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:31:46,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:31:46,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:31:46,669 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:31:46,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:31:46,673 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:31:46,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:31:46,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1982663310, now seen corresponding path program 1 times [2022-07-23 14:31:46,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:31:46,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559902638] [2022-07-23 14:31:46,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:31:46,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:31:46,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:31:46,692 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:31:46,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:31:46,703 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:31:46,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 23.07 02:31:46 BoogieIcfgContainer [2022-07-23 14:31:46,936 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-07-23 14:31:46,937 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-23 14:31:46,937 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-23 14:31:46,937 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-23 14:31:46,938 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 02:31:44" (3/4) ... [2022-07-23 14:31:46,940 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2022-07-23 14:31:46,967 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-23 14:31:46,968 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-23 14:31:46,968 INFO L158 Benchmark]: Toolchain (without parser) took 2851.29ms. Allocated memory is still 104.9MB. Free memory was 71.5MB in the beginning and 43.4MB in the end (delta: 28.2MB). Peak memory consumption was 26.7MB. Max. memory is 16.1GB. [2022-07-23 14:31:46,969 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 79.7MB. Free memory was 49.9MB in the beginning and 49.9MB in the end (delta: 23.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-23 14:31:46,969 INFO L158 Benchmark]: CACSL2BoogieTranslator took 401.17ms. Allocated memory is still 104.9MB. Free memory was 71.1MB in the beginning and 73.5MB in the end (delta: -2.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-07-23 14:31:46,969 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.63ms. Allocated memory is still 104.9MB. Free memory was 73.5MB in the beginning and 71.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-23 14:31:46,970 INFO L158 Benchmark]: Boogie Preprocessor took 33.82ms. Allocated memory is still 104.9MB. Free memory was 71.4MB in the beginning and 70.3MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-23 14:31:46,970 INFO L158 Benchmark]: RCFGBuilder took 235.91ms. Allocated memory is still 104.9MB. Free memory was 70.3MB in the beginning and 60.9MB in the end (delta: 9.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-23 14:31:46,971 INFO L158 Benchmark]: BuchiAutomizer took 2091.29ms. Allocated memory is still 104.9MB. Free memory was 60.5MB in the beginning and 45.5MB in the end (delta: 15.0MB). Peak memory consumption was 16.6MB. Max. memory is 16.1GB. [2022-07-23 14:31:46,971 INFO L158 Benchmark]: Witness Printer took 30.72ms. Allocated memory is still 104.9MB. Free memory was 45.5MB in the beginning and 43.4MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-23 14:31:46,973 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 79.7MB. Free memory was 49.9MB in the beginning and 49.9MB in the end (delta: 23.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 401.17ms. Allocated memory is still 104.9MB. Free memory was 71.1MB in the beginning and 73.5MB in the end (delta: -2.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 51.63ms. Allocated memory is still 104.9MB. Free memory was 73.5MB in the beginning and 71.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.82ms. Allocated memory is still 104.9MB. Free memory was 71.4MB in the beginning and 70.3MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 235.91ms. Allocated memory is still 104.9MB. Free memory was 70.3MB in the beginning and 60.9MB in the end (delta: 9.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 2091.29ms. Allocated memory is still 104.9MB. Free memory was 60.5MB in the beginning and 45.5MB in the end (delta: 15.0MB). Peak memory consumption was 16.6MB. Max. memory is 16.1GB. * Witness Printer took 30.72ms. Allocated memory is still 104.9MB. Free memory was 45.5MB in the beginning and 43.4MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. * 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 -1 * i + length and consists of 5 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 2.0s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 1.7s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. 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, 25 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 24 mSDsluCounter, 29 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 10 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 25 IncrementalHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 19 mSDtfsCounter, 25 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 ukn84 mio100 lsp62 div100 bol100 ite100 ukn100 eq165 hnf91 smp100 dnf100 smp100 tf100 neg98 sie102 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 29ms 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@e115361=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@74640858=2, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@74640858=0, NULL=1, \result=0, length=1, i=1, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@2514757f=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTArraySubscriptExpression@849fdb=0, arr=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4ea664e3=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