./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/array-memsafety/count_down-alloca-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- 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/array-memsafety/count_down-alloca-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-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 32bit --witnessprinter.graph.data.programhash 2407fc1341f915e07c0451c9d94952a51e657d88233cd0bc37ed2523188f0c82 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-14 16:32:15,019 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-14 16:32:15,021 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-14 16:32:15,063 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-14 16:32:15,063 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-14 16:32:15,065 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-14 16:32:15,067 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-14 16:32:15,069 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-14 16:32:15,071 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-14 16:32:15,074 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-14 16:32:15,075 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-14 16:32:15,077 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-14 16:32:15,077 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-14 16:32:15,078 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-14 16:32:15,079 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-14 16:32:15,081 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-14 16:32:15,082 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-14 16:32:15,083 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-14 16:32:15,084 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-14 16:32:15,088 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-14 16:32:15,089 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-14 16:32:15,090 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-14 16:32:15,091 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-14 16:32:15,091 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-14 16:32:15,093 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-14 16:32:15,098 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-14 16:32:15,098 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-14 16:32:15,098 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-14 16:32:15,099 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-14 16:32:15,100 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-14 16:32:15,100 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-14 16:32:15,100 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-14 16:32:15,102 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-14 16:32:15,102 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-14 16:32:15,103 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-14 16:32:15,103 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-14 16:32:15,103 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-14 16:32:15,104 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-14 16:32:15,104 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-14 16:32:15,104 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-14 16:32:15,105 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-14 16:32:15,106 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-14 16:32:15,107 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2022-07-14 16:32:15,131 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-14 16:32:15,132 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-14 16:32:15,132 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-14 16:32:15,132 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-14 16:32:15,134 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-14 16:32:15,134 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-14 16:32:15,134 INFO L138 SettingsManager]: * Use SBE=true [2022-07-14 16:32:15,134 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-07-14 16:32:15,134 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-07-14 16:32:15,135 INFO L138 SettingsManager]: * Use old map elimination=false [2022-07-14 16:32:15,135 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-07-14 16:32:15,135 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-07-14 16:32:15,135 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-07-14 16:32:15,135 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-14 16:32:15,136 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-14 16:32:15,136 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-14 16:32:15,136 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-14 16:32:15,136 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-14 16:32:15,136 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-14 16:32:15,136 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-07-14 16:32:15,136 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-07-14 16:32:15,137 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-07-14 16:32:15,137 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-14 16:32:15,137 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-14 16:32:15,137 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-07-14 16:32:15,137 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-14 16:32:15,137 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-07-14 16:32:15,138 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-14 16:32:15,138 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-14 16:32:15,138 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-14 16:32:15,138 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-14 16:32:15,140 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-07-14 16:32:15,140 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2407fc1341f915e07c0451c9d94952a51e657d88233cd0bc37ed2523188f0c82 [2022-07-14 16:32:15,320 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-14 16:32:15,335 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-14 16:32:15,337 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-14 16:32:15,338 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-14 16:32:15,339 INFO L275 PluginConnector]: CDTParser initialized [2022-07-14 16:32:15,340 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/count_down-alloca-1.i [2022-07-14 16:32:15,386 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5037da30a/611f1041792b42f9b6938e11a5935679/FLAG57a9bb500 [2022-07-14 16:32:15,786 INFO L306 CDTParser]: Found 1 translation units. [2022-07-14 16:32:15,790 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/count_down-alloca-1.i [2022-07-14 16:32:15,797 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5037da30a/611f1041792b42f9b6938e11a5935679/FLAG57a9bb500 [2022-07-14 16:32:15,807 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5037da30a/611f1041792b42f9b6938e11a5935679 [2022-07-14 16:32:15,809 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-14 16:32:15,810 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-14 16:32:15,811 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-14 16:32:15,811 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-14 16:32:15,814 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-14 16:32:15,814 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 04:32:15" (1/1) ... [2022-07-14 16:32:15,815 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54a164 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 04:32:15, skipping insertion in model container [2022-07-14 16:32:15,815 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 04:32:15" (1/1) ... [2022-07-14 16:32:15,819 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-14 16:32:15,847 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-14 16:32:16,041 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 16:32:16,047 INFO L203 MainTranslator]: Completed pre-run [2022-07-14 16:32:16,084 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 16:32:16,105 INFO L208 MainTranslator]: Completed translation [2022-07-14 16:32:16,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 04:32:16 WrapperNode [2022-07-14 16:32:16,108 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-14 16:32:16,109 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-14 16:32:16,109 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-14 16:32:16,109 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-14 16:32:16,114 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 04:32:16" (1/1) ... [2022-07-14 16:32:16,130 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 04:32:16" (1/1) ... [2022-07-14 16:32:16,147 INFO L137 Inliner]: procedures = 115, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 58 [2022-07-14 16:32:16,148 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-14 16:32:16,149 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-14 16:32:16,149 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-14 16:32:16,149 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-14 16:32:16,154 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 04:32:16" (1/1) ... [2022-07-14 16:32:16,155 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 04:32:16" (1/1) ... [2022-07-14 16:32:16,164 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 04:32:16" (1/1) ... [2022-07-14 16:32:16,164 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 04:32:16" (1/1) ... [2022-07-14 16:32:16,172 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 04:32:16" (1/1) ... [2022-07-14 16:32:16,178 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 04:32:16" (1/1) ... [2022-07-14 16:32:16,182 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 04:32:16" (1/1) ... [2022-07-14 16:32:16,184 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-14 16:32:16,187 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-14 16:32:16,188 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-14 16:32:16,188 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-14 16:32:16,189 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 04:32:16" (1/1) ... [2022-07-14 16:32:16,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 16:32:16,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 16:32:16,212 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 16:32:16,227 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 16:32:16,248 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-14 16:32:16,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-14 16:32:16,248 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-14 16:32:16,248 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-14 16:32:16,248 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-14 16:32:16,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-14 16:32:16,323 INFO L234 CfgBuilder]: Building ICFG [2022-07-14 16:32:16,324 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-14 16:32:16,407 INFO L275 CfgBuilder]: Performing block encoding [2022-07-14 16:32:16,411 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-14 16:32:16,412 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-07-14 16:32:16,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 04:32:16 BoogieIcfgContainer [2022-07-14 16:32:16,413 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-14 16:32:16,414 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-07-14 16:32:16,414 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-07-14 16:32:16,427 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-07-14 16:32:16,428 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-14 16:32:16,428 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 14.07 04:32:15" (1/3) ... [2022-07-14 16:32:16,428 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7e62ffc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 14.07 04:32:16, skipping insertion in model container [2022-07-14 16:32:16,429 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-14 16:32:16,429 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 04:32:16" (2/3) ... [2022-07-14 16:32:16,429 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7e62ffc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 14.07 04:32:16, skipping insertion in model container [2022-07-14 16:32:16,429 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-14 16:32:16,429 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 04:32:16" (3/3) ... [2022-07-14 16:32:16,430 INFO L354 chiAutomizerObserver]: Analyzing ICFG count_down-alloca-1.i [2022-07-14 16:32:16,463 INFO L255 stractBuchiCegarLoop]: Interprodecural is true [2022-07-14 16:32:16,463 INFO L256 stractBuchiCegarLoop]: Hoare is false [2022-07-14 16:32:16,463 INFO L257 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-07-14 16:32:16,464 INFO L258 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-07-14 16:32:16,464 INFO L259 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-07-14 16:32:16,464 INFO L260 stractBuchiCegarLoop]: Difference is false [2022-07-14 16:32:16,464 INFO L261 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-07-14 16:32:16,464 INFO L265 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-07-14 16:32:16,467 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 18 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 17 states have internal predecessors, (26), 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 16:32:16,478 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2022-07-14 16:32:16,483 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-14 16:32:16,483 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-14 16:32:16,497 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2022-07-14 16:32:16,497 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-07-14 16:32:16,497 INFO L287 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-07-14 16:32:16,497 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 18 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 17 states have internal predecessors, (26), 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 16:32:16,499 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2022-07-14 16:32:16,499 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-14 16:32:16,499 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-14 16:32:16,499 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2022-07-14 16:32:16,499 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-07-14 16:32:16,503 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; 10#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet2#1, main_#t~malloc3#1.base, main_#t~malloc3#1.offset, main_#t~nondet5#1, main_#t~post4#1, main_#t~mem8#1, main_#t~post9#1, main_#t~mem7#1, main_#t~post6#1, main_~i~0#1, main_~j~0#1, main_~val~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;havoc main_~val~0#1;main_~length~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 18#L516true assume !(main_~length~0#1 < 1 || main_~length~0#1 % 4294967296 >= 536870911); 16#L516-2true call main_#t~malloc3#1.base, main_#t~malloc3#1.offset := #Ultimate.allocOnStack(4 * main_~length~0#1);main_~arr~0#1.base, main_~arr~0#1.offset := main_#t~malloc3#1.base, main_#t~malloc3#1.offset; 12#L518true assume !(main_~arr~0#1.base == 0 && main_~arr~0#1.offset == 0);main_~i~0#1 := 0; 13#L519-3true [2022-07-14 16:32:16,503 INFO L754 eck$LassoCheckResult]: Loop: 13#L519-3true assume !!(main_~i~0#1 < main_~length~0#1);main_~val~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1; 14#L521true assume main_~val~0#1 < 0;main_~val~0#1 := 0; 8#L521-2true call write~int(main_~val~0#1, main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4); 9#L519-2true main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 13#L519-3true [2022-07-14 16:32:16,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 16:32:16,510 INFO L85 PathProgramCache]: Analyzing trace with hash 28695753, now seen corresponding path program 1 times [2022-07-14 16:32:16,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 16:32:16,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193223634] [2022-07-14 16:32:16,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 16:32:16,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 16:32:16,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 16:32:16,581 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 16:32:16,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 16:32:16,607 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 16:32:16,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 16:32:16,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1603878, now seen corresponding path program 1 times [2022-07-14 16:32:16,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 16:32:16,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448174767] [2022-07-14 16:32:16,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 16:32:16,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 16:32:16,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 16:32:16,640 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 16:32:16,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 16:32:16,650 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 16:32:16,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 16:32:16,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1182970350, now seen corresponding path program 1 times [2022-07-14 16:32:16,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 16:32:16,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676772845] [2022-07-14 16:32:16,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 16:32:16,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 16:32:16,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 16:32:16,672 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 16:32:16,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 16:32:16,706 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 16:32:16,904 INFO L210 LassoAnalysis]: Preferences: [2022-07-14 16:32:16,905 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-14 16:32:16,905 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-14 16:32:16,905 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-14 16:32:16,905 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-14 16:32:16,905 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 16:32:16,905 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-14 16:32:16,905 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-14 16:32:16,905 INFO L133 ssoRankerPreferences]: Filename of dumped script: count_down-alloca-1.i_Iteration1_Lasso [2022-07-14 16:32:16,905 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-14 16:32:16,906 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-14 16:32:16,919 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 16:32:17,022 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 16:32:17,024 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 16:32:17,026 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 16:32:17,027 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 16:32:17,029 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 16:32:17,032 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 16:32:17,033 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 16:32:17,035 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 16:32:17,037 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 16:32:17,039 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 16:32:17,042 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 16:32:17,045 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 16:32:17,047 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 16:32:17,050 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 16:32:17,277 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-14 16:32:17,280 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-14 16:32:17,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 16:32:17,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 16:32:17,283 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 16:32:17,292 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 16:32:17,292 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 16:32:17,299 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-14 16:32:17,299 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-14 16:32:17,300 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-14 16:32:17,300 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-14 16:32:17,300 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-14 16:32:17,301 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-14 16:32:17,301 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-14 16:32:17,309 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-14 16:32:17,327 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 16:32:17,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 16:32:17,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 16:32:17,329 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 16:32:17,330 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 16:32:17,333 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 16:32:17,339 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-14 16:32:17,339 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-14 16:32:17,339 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-14 16:32:17,339 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-14 16:32:17,343 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-07-14 16:32:17,343 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-07-14 16:32:17,355 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-14 16:32:17,373 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 16:32:17,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 16:32:17,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 16:32:17,375 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 16:32:17,387 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 16:32:17,389 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 16:32:17,397 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-14 16:32:17,398 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-14 16:32:17,398 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-14 16:32:17,398 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-14 16:32:17,412 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-07-14 16:32:17,413 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-07-14 16:32:17,425 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-14 16:32:17,462 INFO L443 ModelExtractionUtils]: Simplification made 12 calls to the SMT solver. [2022-07-14 16:32:17,462 INFO L444 ModelExtractionUtils]: 8 out of 22 variables were initially zero. Simplification set additionally 10 variables to zero. [2022-07-14 16:32:17,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 16:32:17,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 16:32:17,465 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 16:32:17,466 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 16:32:17,467 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-14 16:32:17,483 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2022-07-14 16:32:17,483 INFO L513 LassoAnalysis]: Proved termination. [2022-07-14 16:32:17,483 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select #length ULTIMATE.start_main_#t~malloc3#1.base)_1, ULTIMATE.start_main_~i~0#1, ULTIMATE.start_main_~arr~0#1.offset) = 1*v_rep(select #length ULTIMATE.start_main_#t~malloc3#1.base)_1 - 4*ULTIMATE.start_main_~i~0#1 - 1*ULTIMATE.start_main_~arr~0#1.offset Supporting invariants [] [2022-07-14 16:32:17,503 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 16:32:17,511 INFO L293 tatePredicateManager]: 2 out of 3 supporting invariants were superfluous and have been removed [2022-07-14 16:32:17,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 16:32:17,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 16:32:17,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-14 16:32:17,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 16:32:17,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 16:32:17,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-14 16:32:17,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 16:32:17,611 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 16:32:17,632 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 2 loop predicates [2022-07-14 16:32:17,633 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 18 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 17 states have internal predecessors, (26), 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 1.8) internal successors, (9), 5 states have internal predecessors, (9), 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 16:32:17,704 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 18 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 17 states have internal predecessors, (26), 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 1.8) internal successors, (9), 5 states have internal predecessors, (9), 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 40 states and 57 transitions. Complement of second has 9 states. [2022-07-14 16:32:17,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2022-07-14 16:32:17,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 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 16:32:17,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 37 transitions. [2022-07-14 16:32:17,714 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 37 transitions. Stem has 5 letters. Loop has 4 letters. [2022-07-14 16:32:17,715 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 16:32:17,715 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 37 transitions. Stem has 9 letters. Loop has 4 letters. [2022-07-14 16:32:17,715 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 16:32:17,715 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 37 transitions. Stem has 5 letters. Loop has 8 letters. [2022-07-14 16:32:17,715 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 16:32:17,716 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 40 states and 57 transitions. [2022-07-14 16:32:17,718 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2022-07-14 16:32:17,720 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 40 states to 15 states and 20 transitions. [2022-07-14 16:32:17,722 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2022-07-14 16:32:17,722 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2022-07-14 16:32:17,723 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 20 transitions. [2022-07-14 16:32:17,723 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-14 16:32:17,723 INFO L369 hiAutomatonCegarLoop]: Abstraction has 15 states and 20 transitions. [2022-07-14 16:32:17,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 20 transitions. [2022-07-14 16:32:17,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-07-14 16:32:17,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 14 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 16:32:17,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 20 transitions. [2022-07-14 16:32:17,739 INFO L392 hiAutomatonCegarLoop]: Abstraction has 15 states and 20 transitions. [2022-07-14 16:32:17,739 INFO L374 stractBuchiCegarLoop]: Abstraction has 15 states and 20 transitions. [2022-07-14 16:32:17,739 INFO L287 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-07-14 16:32:17,739 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 20 transitions. [2022-07-14 16:32:17,740 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2022-07-14 16:32:17,740 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-14 16:32:17,740 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-14 16:32:17,740 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-14 16:32:17,740 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-07-14 16:32:17,740 INFO L752 eck$LassoCheckResult]: Stem: 134#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 135#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet2#1, main_#t~malloc3#1.base, main_#t~malloc3#1.offset, main_#t~nondet5#1, main_#t~post4#1, main_#t~mem8#1, main_#t~post9#1, main_#t~mem7#1, main_#t~post6#1, main_~i~0#1, main_~j~0#1, main_~val~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;havoc main_~val~0#1;main_~length~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 141#L516 assume !(main_~length~0#1 < 1 || main_~length~0#1 % 4294967296 >= 536870911); 146#L516-2 call main_#t~malloc3#1.base, main_#t~malloc3#1.offset := #Ultimate.allocOnStack(4 * main_~length~0#1);main_~arr~0#1.base, main_~arr~0#1.offset := main_#t~malloc3#1.base, main_#t~malloc3#1.offset; 142#L518 assume !(main_~arr~0#1.base == 0 && main_~arr~0#1.offset == 0);main_~i~0#1 := 0; 143#L519-3 assume !(main_~i~0#1 < main_~length~0#1); 144#L519-4 main_~j~0#1 := 0; 133#L526-3 [2022-07-14 16:32:17,740 INFO L754 eck$LassoCheckResult]: Loop: 133#L526-3 assume !!(main_~j~0#1 < main_~length~0#1); 137#L527-3 call main_#t~mem7#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~j~0#1, 4); 136#L527-1 assume !(main_#t~mem7#1 > 0);havoc main_#t~mem7#1; 132#L526-2 main_#t~post6#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post6#1;havoc main_#t~post6#1; 133#L526-3 [2022-07-14 16:32:17,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 16:32:17,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1806815512, now seen corresponding path program 1 times [2022-07-14 16:32:17,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 16:32:17,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908859198] [2022-07-14 16:32:17,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 16:32:17,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 16:32:17,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 16:32:17,790 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 16:32:17,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 16:32:17,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908859198] [2022-07-14 16:32:17,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908859198] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 16:32:17,791 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 16:32:17,791 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-14 16:32:17,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890402066] [2022-07-14 16:32:17,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 16:32:17,793 INFO L757 eck$LassoCheckResult]: stem already infeasible [2022-07-14 16:32:17,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 16:32:17,794 INFO L85 PathProgramCache]: Analyzing trace with hash 2252300, now seen corresponding path program 1 times [2022-07-14 16:32:17,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 16:32:17,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910498995] [2022-07-14 16:32:17,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 16:32:17,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 16:32:17,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 16:32:17,799 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 16:32:17,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 16:32:17,803 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 16:32:17,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 16:32:17,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-14 16:32:17,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-14 16:32:17,831 INFO L87 Difference]: Start difference. First operand 15 states and 20 transitions. cyclomatic complexity: 7 Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 16:32:17,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 16:32:17,856 INFO L93 Difference]: Finished difference Result 18 states and 23 transitions. [2022-07-14 16:32:17,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-14 16:32:17,857 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 18 states and 23 transitions. [2022-07-14 16:32:17,858 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2022-07-14 16:32:17,858 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 18 states to 18 states and 23 transitions. [2022-07-14 16:32:17,858 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2022-07-14 16:32:17,858 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2022-07-14 16:32:17,858 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 23 transitions. [2022-07-14 16:32:17,858 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-14 16:32:17,859 INFO L369 hiAutomatonCegarLoop]: Abstraction has 18 states and 23 transitions. [2022-07-14 16:32:17,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 23 transitions. [2022-07-14 16:32:17,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 15. [2022-07-14 16:32:17,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 14 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 16:32:17,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 19 transitions. [2022-07-14 16:32:17,860 INFO L392 hiAutomatonCegarLoop]: Abstraction has 15 states and 19 transitions. [2022-07-14 16:32:17,860 INFO L374 stractBuchiCegarLoop]: Abstraction has 15 states and 19 transitions. [2022-07-14 16:32:17,860 INFO L287 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-07-14 16:32:17,860 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 19 transitions. [2022-07-14 16:32:17,860 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2022-07-14 16:32:17,860 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-14 16:32:17,860 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-14 16:32:17,861 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 16:32:17,861 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-07-14 16:32:17,861 INFO L752 eck$LassoCheckResult]: Stem: 176#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 177#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet2#1, main_#t~malloc3#1.base, main_#t~malloc3#1.offset, main_#t~nondet5#1, main_#t~post4#1, main_#t~mem8#1, main_#t~post9#1, main_#t~mem7#1, main_#t~post6#1, main_~i~0#1, main_~j~0#1, main_~val~0#1, main_~length~0#1, main_~arr~0#1.base, main_~arr~0#1.offset;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~val~0#1;main_~length~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 181#L516 assume !(main_~length~0#1 < 1 || main_~length~0#1 % 4294967296 >= 536870911); 186#L516-2 call main_#t~malloc3#1.base, main_#t~malloc3#1.offset := #Ultimate.allocOnStack(4 * main_~length~0#1);main_~arr~0#1.base, main_~arr~0#1.offset := main_#t~malloc3#1.base, main_#t~malloc3#1.offset; 182#L518 assume !(main_~arr~0#1.base == 0 && main_~arr~0#1.offset == 0);main_~i~0#1 := 0; 183#L519-3 assume !!(main_~i~0#1 < main_~length~0#1);main_~val~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1; 184#L521 assume !(main_~val~0#1 < 0); 178#L521-2 call write~int(main_~val~0#1, main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4); 179#L519-2 main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 180#L519-3 assume !(main_~i~0#1 < main_~length~0#1); 185#L519-4 main_~j~0#1 := 0; 173#L526-3 [2022-07-14 16:32:17,861 INFO L754 eck$LassoCheckResult]: Loop: 173#L526-3 assume !!(main_~j~0#1 < main_~length~0#1); 175#L527-3 call main_#t~mem7#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~j~0#1, 4); 174#L527-1 assume !(main_#t~mem7#1 > 0);havoc main_#t~mem7#1; 172#L526-2 main_#t~post6#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post6#1;havoc main_#t~post6#1; 173#L526-3 [2022-07-14 16:32:17,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 16:32:17,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1329979393, now seen corresponding path program 1 times [2022-07-14 16:32:17,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 16:32:17,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885700005] [2022-07-14 16:32:17,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 16:32:17,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 16:32:17,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 16:32:17,872 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 16:32:17,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 16:32:17,883 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 16:32:17,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 16:32:17,883 INFO L85 PathProgramCache]: Analyzing trace with hash 2252300, now seen corresponding path program 2 times [2022-07-14 16:32:17,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 16:32:17,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56606086] [2022-07-14 16:32:17,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 16:32:17,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 16:32:17,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 16:32:17,887 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 16:32:17,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 16:32:17,894 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 16:32:17,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 16:32:17,895 INFO L85 PathProgramCache]: Analyzing trace with hash -2035265782, now seen corresponding path program 1 times [2022-07-14 16:32:17,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 16:32:17,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533381563] [2022-07-14 16:32:17,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 16:32:17,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 16:32:17,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 16:32:17,912 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 16:32:17,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 16:32:17,924 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 16:32:18,003 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 16:32:18,162 INFO L210 LassoAnalysis]: Preferences: [2022-07-14 16:32:18,163 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-14 16:32:18,163 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-14 16:32:18,163 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-14 16:32:18,163 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-14 16:32:18,163 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 16:32:18,163 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-14 16:32:18,163 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-14 16:32:18,163 INFO L133 ssoRankerPreferences]: Filename of dumped script: count_down-alloca-1.i_Iteration3_Lasso [2022-07-14 16:32:18,164 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-14 16:32:18,164 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-14 16:32:18,168 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 16:32:18,170 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 16:32:18,192 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer has thrown an exception: java.lang.IllegalArgumentException at de.uni_freiburg.informatik.ultimate.util.datastructures.ScopedHashMap.put(ScopedHashMap.java:331) at java.base/java.util.AbstractMap.putAll(AbstractMap.java:281) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.PureSubstitution.(PureSubstitution.java:81) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.Substitution.(Substitution.java:48) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.Substitution.apply(Substitution.java:59) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.mapelimination.MapEliminator.replaceMapReads(MapEliminator.java:518) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.mapelimination.MapEliminator.getRewrittenTransFormula(MapEliminator.java:342) at de.uni_freiburg.informatik.ultimate.lassoranker.preprocessors.MapEliminationLassoPreprocessor.process(MapEliminationLassoPreprocessor.java:109) at de.uni_freiburg.informatik.ultimate.lassoranker.variables.LassoBuilder.applyPreprocessor(LassoBuilder.java:154) at de.uni_freiburg.informatik.ultimate.lassoranker.variables.LassoBuilder.preprocess(LassoBuilder.java:262) at de.uni_freiburg.informatik.ultimate.lassoranker.LassoAnalysis.preprocess(LassoAnalysis.java:280) at de.uni_freiburg.informatik.ultimate.lassoranker.LassoAnalysis.(LassoAnalysis.java:229) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck.synthesize(LassoCheck.java:601) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck$LassoCheckResult.checkLassoTermination(LassoCheck.java:914) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck$LassoCheckResult.(LassoCheck.java:823) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck.(LassoCheck.java:247) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.cegar.AbstractBuchiCegarLoop.runCegarLoop(AbstractBuchiCegarLoop.java:310) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver.doTerminationAnalysis(BuchiAutomizerObserver.java:146) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver.finish(BuchiAutomizerObserver.java:363) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-07-14 16:32:18,199 INFO L158 Benchmark]: Toolchain (without parser) took 2386.92ms. Allocated memory was 83.9MB in the beginning and 102.8MB in the end (delta: 18.9MB). Free memory was 49.3MB in the beginning and 62.2MB in the end (delta: -12.9MB). Peak memory consumption was 34.9MB. Max. memory is 16.1GB. [2022-07-14 16:32:18,200 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 83.9MB. Free memory was 62.6MB in the beginning and 62.6MB in the end (delta: 26.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-14 16:32:18,204 INFO L158 Benchmark]: CACSL2BoogieTranslator took 296.98ms. Allocated memory was 83.9MB in the beginning and 102.8MB in the end (delta: 18.9MB). Free memory was 49.1MB in the beginning and 72.4MB in the end (delta: -23.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-14 16:32:18,204 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.72ms. Allocated memory is still 102.8MB. Free memory was 72.4MB in the beginning and 70.8MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-14 16:32:18,204 INFO L158 Benchmark]: Boogie Preprocessor took 37.63ms. Allocated memory is still 102.8MB. Free memory was 70.8MB in the beginning and 69.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-14 16:32:18,205 INFO L158 Benchmark]: RCFGBuilder took 225.92ms. Allocated memory is still 102.8MB. Free memory was 69.5MB in the beginning and 59.3MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-14 16:32:18,205 INFO L158 Benchmark]: BuchiAutomizer took 1782.85ms. Allocated memory is still 102.8MB. Free memory was 58.9MB in the beginning and 62.2MB in the end (delta: -3.3MB). Peak memory consumption was 28.8MB. Max. memory is 16.1GB. [2022-07-14 16:32:18,211 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 83.9MB. Free memory was 62.6MB in the beginning and 62.6MB in the end (delta: 26.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 296.98ms. Allocated memory was 83.9MB in the beginning and 102.8MB in the end (delta: 18.9MB). Free memory was 49.1MB in the beginning and 72.4MB in the end (delta: -23.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.72ms. Allocated memory is still 102.8MB. Free memory was 72.4MB in the beginning and 70.8MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 37.63ms. Allocated memory is still 102.8MB. Free memory was 70.8MB in the beginning and 69.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 225.92ms. Allocated memory is still 102.8MB. Free memory was 69.5MB in the beginning and 59.3MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 1782.85ms. Allocated memory is still 102.8MB. Free memory was 58.9MB in the beginning and 62.2MB in the end (delta: -3.3MB). Peak memory consumption was 28.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: - ExceptionOrErrorResult: IllegalArgumentException: null de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: IllegalArgumentException: null: de.uni_freiburg.informatik.ultimate.util.datastructures.ScopedHashMap.put(ScopedHashMap.java:331) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-07-14 16:32:18,238 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis No suitable file found in config dir /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config using search string *Termination*32bit*_Bitvector*.epf No suitable settings file found using Termination*32bit*_Bitvector ERROR: UNSUPPORTED PROPERTY Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: IllegalArgumentException: null