./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-15/array04_alloca.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_0a0abb41-7507-4bda-aaaf-6b1f58184d32/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_0a0abb41-7507-4bda-aaaf-6b1f58184d32/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_0a0abb41-7507-4bda-aaaf-6b1f58184d32/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_0a0abb41-7507-4bda-aaaf-6b1f58184d32/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-15/array04_alloca.i -s /tmp/vcloud-vcloud-master/worker/run_dir_0a0abb41-7507-4bda-aaaf-6b1f58184d32/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_0a0abb41-7507-4bda-aaaf-6b1f58184d32/bin/uautomizer --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 ede187b1b02320b6ac4ee708403ec99e5631a2e0 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 00:15:31,172 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:15:31,176 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:15:31,234 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:15:31,235 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:15:31,236 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:15:31,238 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:15:31,241 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:15:31,243 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:15:31,244 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:15:31,245 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:15:31,247 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:15:31,247 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:15:31,249 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:15:31,250 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:15:31,252 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:15:31,253 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:15:31,255 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:15:31,257 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:15:31,260 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:15:31,262 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:15:31,263 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:15:31,265 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:15:31,266 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:15:31,270 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:15:31,270 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:15:31,271 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:15:31,272 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:15:31,272 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:15:31,274 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:15:31,274 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:15:31,275 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:15:31,276 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:15:31,277 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:15:31,279 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:15:31,279 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:15:31,280 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:15:31,280 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:15:31,281 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:15:31,282 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:15:31,283 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:15:31,284 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_0a0abb41-7507-4bda-aaaf-6b1f58184d32/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-11-30 00:15:31,307 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:15:31,307 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:15:31,308 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:15:31,309 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:15:31,309 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:15:31,310 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-30 00:15:31,310 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-30 00:15:31,310 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-30 00:15:31,311 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-30 00:15:31,311 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-30 00:15:31,312 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-30 00:15:31,312 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:15:31,312 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-30 00:15:31,313 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 00:15:31,313 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:15:31,313 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-30 00:15:31,314 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-30 00:15:31,314 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-30 00:15:31,315 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:15:31,315 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-30 00:15:31,315 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:15:31,315 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-30 00:15:31,316 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:15:31,316 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:15:31,316 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-30 00:15:31,316 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:15:31,317 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 00:15:31,317 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:15:31,317 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-30 00:15:31,318 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-30 00:15:31,318 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:/tmp/vcloud-vcloud-master/worker/run_dir_0a0abb41-7507-4bda-aaaf-6b1f58184d32/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_0a0abb41-7507-4bda-aaaf-6b1f58184d32/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ede187b1b02320b6ac4ee708403ec99e5631a2e0 [2020-11-30 00:15:31,611 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:15:31,636 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:15:31,638 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:15:31,639 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:15:31,642 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:15:31,643 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_0a0abb41-7507-4bda-aaaf-6b1f58184d32/bin/uautomizer/../../sv-benchmarks/c/termination-15/array04_alloca.i [2020-11-30 00:15:31,726 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0a0abb41-7507-4bda-aaaf-6b1f58184d32/bin/uautomizer/data/806bc720c/697ec26c50604827b97bf80649708454/FLAG304475268 [2020-11-30 00:15:32,358 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:15:32,359 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_0a0abb41-7507-4bda-aaaf-6b1f58184d32/sv-benchmarks/c/termination-15/array04_alloca.i [2020-11-30 00:15:32,380 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0a0abb41-7507-4bda-aaaf-6b1f58184d32/bin/uautomizer/data/806bc720c/697ec26c50604827b97bf80649708454/FLAG304475268 [2020-11-30 00:15:32,615 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_0a0abb41-7507-4bda-aaaf-6b1f58184d32/bin/uautomizer/data/806bc720c/697ec26c50604827b97bf80649708454 [2020-11-30 00:15:32,618 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:15:32,620 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:15:32,625 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:15:32,626 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:15:32,629 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:15:32,630 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:15:32" (1/1) ... [2020-11-30 00:15:32,639 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12da1369 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:15:32, skipping insertion in model container [2020-11-30 00:15:32,639 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:15:32" (1/1) ... [2020-11-30 00:15:32,648 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:15:32,711 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:15:33,107 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:15:33,124 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:15:33,197 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:15:33,276 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:15:33,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:15:33 WrapperNode [2020-11-30 00:15:33,278 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:15:33,279 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:15:33,280 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:15:33,280 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:15:33,289 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:15:33" (1/1) ... [2020-11-30 00:15:33,317 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:15:33" (1/1) ... [2020-11-30 00:15:33,342 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:15:33,344 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:15:33,344 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:15:33,344 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:15:33,353 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:15:33" (1/1) ... [2020-11-30 00:15:33,353 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:15:33" (1/1) ... [2020-11-30 00:15:33,357 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:15:33" (1/1) ... [2020-11-30 00:15:33,358 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:15:33" (1/1) ... [2020-11-30 00:15:33,367 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:15:33" (1/1) ... [2020-11-30 00:15:33,370 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:15:33" (1/1) ... [2020-11-30 00:15:33,372 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:15:33" (1/1) ... [2020-11-30 00:15:33,373 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:15:33,374 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:15:33,374 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:15:33,375 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:15:33,378 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:15:33" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0a0abb41-7507-4bda-aaaf-6b1f58184d32/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:15:33,436 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-30 00:15:33,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-30 00:15:33,436 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:15:33,436 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 00:15:33,437 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:15:33,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:15:33,805 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:15:33,805 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-30 00:15:33,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:15:33 BoogieIcfgContainer [2020-11-30 00:15:33,808 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:15:33,810 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-30 00:15:33,810 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-30 00:15:33,813 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-30 00:15:33,814 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 00:15:33,815 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 30.11 12:15:32" (1/3) ... [2020-11-30 00:15:33,816 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@58e45b47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 30.11 12:15:33, skipping insertion in model container [2020-11-30 00:15:33,816 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 00:15:33,817 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:15:33" (2/3) ... [2020-11-30 00:15:33,817 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@58e45b47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 30.11 12:15:33, skipping insertion in model container [2020-11-30 00:15:33,817 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 00:15:33,817 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:15:33" (3/3) ... [2020-11-30 00:15:33,820 INFO L373 chiAutomizerObserver]: Analyzing ICFG array04_alloca.i [2020-11-30 00:15:33,894 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-30 00:15:33,894 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-30 00:15:33,895 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-30 00:15:33,895 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:15:33,895 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:15:33,895 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-30 00:15:33,895 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:15:33,896 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-30 00:15:33,911 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states. [2020-11-30 00:15:33,935 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 3 [2020-11-30 00:15:33,935 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:15:33,936 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:15:33,942 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2020-11-30 00:15:33,943 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-30 00:15:33,943 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-30 00:15:33,943 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states. [2020-11-30 00:15:33,946 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 3 [2020-11-30 00:15:33,946 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:15:33,946 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:15:33,947 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2020-11-30 00:15:33,947 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-30 00:15:33,955 INFO L794 eck$LassoCheckResult]: Stem: 8#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 6#L-1true havoc main_#res;havoc main_#t~nondet205, main_#t~malloc206.base, main_#t~malloc206.offset, main_#t~nondet208, main_#t~post207, main_#t~mem209, main_~i~0, main_~j~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;main_~length~0 := main_#t~nondet205;havoc main_#t~nondet205; 14#L367true assume !(main_~length~0 < 1); 5#L367-2true call main_#t~malloc206.base, main_#t~malloc206.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc206.base, main_#t~malloc206.offset; 11#L369true assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 15#L370-3true [2020-11-30 00:15:33,955 INFO L796 eck$LassoCheckResult]: Loop: 15#L370-3true assume !!(main_~i~0 < main_~length~0);call write~int(main_#t~nondet208, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4);havoc main_#t~nondet208; 13#L370-2true main_#t~post207 := main_~i~0;main_~i~0 := 1 + main_#t~post207;havoc main_#t~post207; 15#L370-3true [2020-11-30 00:15:33,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:15:33,963 INFO L82 PathProgramCache]: Analyzing trace with hash 28695753, now seen corresponding path program 1 times [2020-11-30 00:15:33,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:15:33,976 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535054709] [2020-11-30 00:15:33,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:15:34,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:15:34,089 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:15:34,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:15:34,110 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:15:34,137 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:15:34,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:15:34,141 INFO L82 PathProgramCache]: Analyzing trace with hash 1667, now seen corresponding path program 1 times [2020-11-30 00:15:34,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:15:34,142 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036876348] [2020-11-30 00:15:34,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:15:34,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:15:34,162 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:15:34,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:15:34,176 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:15:34,180 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:15:34,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:15:34,183 INFO L82 PathProgramCache]: Analyzing trace with hash 1806815563, now seen corresponding path program 1 times [2020-11-30 00:15:34,183 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:15:34,183 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822345546] [2020-11-30 00:15:34,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:15:34,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:15:34,201 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:15:34,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:15:34,215 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:15:34,220 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:15:34,507 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 39 [2020-11-30 00:15:34,650 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2020-11-30 00:15:34,688 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:15:34,688 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:15:34,689 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:15:34,689 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:15:34,689 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-30 00:15:34,689 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:15:34,690 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:15:34,690 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:15:34,690 INFO L133 ssoRankerPreferences]: Filename of dumped script: array04_alloca.i_Iteration1_Lasso [2020-11-30 00:15:34,690 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:15:34,690 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:15:34,716 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:15:34,725 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:15:34,730 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:15:34,735 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:15:34,914 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:15:34,920 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:15:34,924 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:15:34,934 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:15:35,220 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:15:35,225 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0a0abb41-7507-4bda-aaaf-6b1f58184d32/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:15:35,239 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:15:35,241 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:15:35,242 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:15:35,242 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:15:35,243 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:15:35,243 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:15:35,248 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:15:35,249 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:15:35,252 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0a0abb41-7507-4bda-aaaf-6b1f58184d32/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:15:35,294 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:15:35,296 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:15:35,297 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:15:35,297 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:15:35,297 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:15:35,297 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:15:35,299 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:15:35,300 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:15:35,305 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0a0abb41-7507-4bda-aaaf-6b1f58184d32/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:15:35,340 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:15:35,341 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:15:35,342 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:15:35,342 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:15:35,342 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:15:35,347 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 00:15:35,347 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-30 00:15:35,353 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0a0abb41-7507-4bda-aaaf-6b1f58184d32/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:15:35,390 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:15:35,392 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:15:35,392 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:15:35,393 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:15:35,393 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:15:35,407 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 00:15:35,407 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-30 00:15:35,423 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-30 00:15:35,492 INFO L443 ModelExtractionUtils]: Simplification made 12 calls to the SMT solver. [2020-11-30 00:15:35,492 INFO L444 ModelExtractionUtils]: 6 out of 22 variables were initially zero. Simplification set additionally 12 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0a0abb41-7507-4bda-aaaf-6b1f58184d32/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:15:35,526 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:15:35,538 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-11-30 00:15:35,538 INFO L510 LassoAnalysis]: Proved termination. [2020-11-30 00:15:35,539 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select #length ULTIMATE.start_main_#t~malloc206.base)_1, ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~arr~0.offset) = 2*v_rep(select #length ULTIMATE.start_main_#t~malloc206.base)_1 - 4*ULTIMATE.start_main_~i~0 - 1*ULTIMATE.start_main_~arr~0.offset Supporting invariants [] [2020-11-30 00:15:35,590 INFO L297 tatePredicateManager]: 2 out of 3 supporting invariants were superfluous and have been removed [2020-11-30 00:15:35,600 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-30 00:15:35,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:15:35,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:15:35,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 00:15:35,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:15:35,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:15:35,686 WARN L261 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-30 00:15:35,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:15:35,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:15:35,728 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 [2020-11-30 00:15:35,729 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states. Second operand 4 states. [2020-11-30 00:15:35,833 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states.. Second operand 4 states. Result 27 states and 37 transitions. Complement of second has 9 states. [2020-11-30 00:15:35,834 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 [2020-11-30 00:15:35,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-30 00:15:35,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 24 transitions. [2020-11-30 00:15:35,837 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 24 transitions. Stem has 5 letters. Loop has 2 letters. [2020-11-30 00:15:35,838 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:15:35,838 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 24 transitions. Stem has 7 letters. Loop has 2 letters. [2020-11-30 00:15:35,838 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:15:35,838 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 24 transitions. Stem has 5 letters. Loop has 4 letters. [2020-11-30 00:15:35,838 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:15:35,839 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 37 transitions. [2020-11-30 00:15:35,842 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-30 00:15:35,846 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 10 states and 13 transitions. [2020-11-30 00:15:35,847 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2020-11-30 00:15:35,847 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2020-11-30 00:15:35,848 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 13 transitions. [2020-11-30 00:15:35,848 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-30 00:15:35,848 INFO L691 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2020-11-30 00:15:35,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 13 transitions. [2020-11-30 00:15:35,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-11-30 00:15:35,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-11-30 00:15:35,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 13 transitions. [2020-11-30 00:15:35,876 INFO L714 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2020-11-30 00:15:35,877 INFO L594 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2020-11-30 00:15:35,877 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-30 00:15:35,877 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 13 transitions. [2020-11-30 00:15:35,879 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-30 00:15:35,879 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:15:35,880 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:15:35,880 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:15:35,880 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-11-30 00:15:35,882 INFO L794 eck$LassoCheckResult]: Stem: 112#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 108#L-1 havoc main_#res;havoc main_#t~nondet205, main_#t~malloc206.base, main_#t~malloc206.offset, main_#t~nondet208, main_#t~post207, main_#t~mem209, main_~i~0, main_~j~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;main_~length~0 := main_#t~nondet205;havoc main_#t~nondet205; 109#L367 assume !(main_~length~0 < 1); 113#L367-2 call main_#t~malloc206.base, main_#t~malloc206.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc206.base, main_#t~malloc206.offset; 114#L369 assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 115#L370-3 assume !(main_~i~0 < main_~length~0); 111#L370-4 main_~j~0 := 0; 110#L374-2 [2020-11-30 00:15:35,882 INFO L796 eck$LassoCheckResult]: Loop: 110#L374-2 assume !!(0 <= main_~j~0 && main_~j~0 < main_~length~0);call main_#t~mem209 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4);main_~j~0 := main_~j~0 + main_#t~mem209;havoc main_#t~mem209; 110#L374-2 [2020-11-30 00:15:35,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:15:35,883 INFO L82 PathProgramCache]: Analyzing trace with hash 1806815505, now seen corresponding path program 1 times [2020-11-30 00:15:35,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:15:35,884 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024125284] [2020-11-30 00:15:35,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:15:35,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:15:35,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:15:35,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024125284] [2020-11-30 00:15:35,988 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:15:35,989 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 00:15:35,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741476728] [2020-11-30 00:15:35,991 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-30 00:15:35,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:15:35,992 INFO L82 PathProgramCache]: Analyzing trace with hash 68, now seen corresponding path program 1 times [2020-11-30 00:15:35,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:15:35,992 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842798341] [2020-11-30 00:15:35,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:15:35,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:15:35,998 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:15:36,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:15:36,003 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:15:36,004 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:15:36,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:15:36,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 00:15:36,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:15:36,066 INFO L87 Difference]: Start difference. First operand 10 states and 13 transitions. cyclomatic complexity: 5 Second operand 4 states. [2020-11-30 00:15:36,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:15:36,105 INFO L93 Difference]: Finished difference Result 11 states and 13 transitions. [2020-11-30 00:15:36,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 00:15:36,106 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 13 transitions. [2020-11-30 00:15:36,107 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-30 00:15:36,107 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 11 states and 13 transitions. [2020-11-30 00:15:36,107 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2020-11-30 00:15:36,108 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2020-11-30 00:15:36,108 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 13 transitions. [2020-11-30 00:15:36,108 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-30 00:15:36,108 INFO L691 BuchiCegarLoop]: Abstraction has 11 states and 13 transitions. [2020-11-30 00:15:36,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 13 transitions. [2020-11-30 00:15:36,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 10. [2020-11-30 00:15:36,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-11-30 00:15:36,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2020-11-30 00:15:36,110 INFO L714 BuchiCegarLoop]: Abstraction has 10 states and 12 transitions. [2020-11-30 00:15:36,110 INFO L594 BuchiCegarLoop]: Abstraction has 10 states and 12 transitions. [2020-11-30 00:15:36,110 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-30 00:15:36,110 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 12 transitions. [2020-11-30 00:15:36,111 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-30 00:15:36,111 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:15:36,111 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:15:36,111 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:15:36,111 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-11-30 00:15:36,112 INFO L794 eck$LassoCheckResult]: Stem: 140#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 137#L-1 havoc main_#res;havoc main_#t~nondet205, main_#t~malloc206.base, main_#t~malloc206.offset, main_#t~nondet208, main_#t~post207, main_#t~mem209, main_~i~0, main_~j~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;main_~length~0 := main_#t~nondet205;havoc main_#t~nondet205; 138#L367 assume !(main_~length~0 < 1); 141#L367-2 call main_#t~malloc206.base, main_#t~malloc206.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc206.base, main_#t~malloc206.offset; 142#L369 assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 143#L370-3 assume !!(main_~i~0 < main_~length~0);call write~int(main_#t~nondet208, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4);havoc main_#t~nondet208; 144#L370-2 main_#t~post207 := main_~i~0;main_~i~0 := 1 + main_#t~post207;havoc main_#t~post207; 145#L370-3 assume !(main_~i~0 < main_~length~0); 139#L370-4 main_~j~0 := 0; 136#L374-2 [2020-11-30 00:15:36,112 INFO L796 eck$LassoCheckResult]: Loop: 136#L374-2 assume !!(0 <= main_~j~0 && main_~j~0 < main_~length~0);call main_#t~mem209 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4);main_~j~0 := main_~j~0 + main_#t~mem209;havoc main_#t~mem209; 136#L374-2 [2020-11-30 00:15:36,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:15:36,112 INFO L82 PathProgramCache]: Analyzing trace with hash 1182969107, now seen corresponding path program 1 times [2020-11-30 00:15:36,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:15:36,113 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604018332] [2020-11-30 00:15:36,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:15:36,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:15:36,135 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:15:36,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:15:36,151 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:15:36,156 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:15:36,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:15:36,157 INFO L82 PathProgramCache]: Analyzing trace with hash 68, now seen corresponding path program 2 times [2020-11-30 00:15:36,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:15:36,157 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364094312] [2020-11-30 00:15:36,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:15:36,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:15:36,162 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:15:36,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:15:36,166 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:15:36,168 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:15:36,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:15:36,169 INFO L82 PathProgramCache]: Analyzing trace with hash -1982663310, now seen corresponding path program 1 times [2020-11-30 00:15:36,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:15:36,169 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747355644] [2020-11-30 00:15:36,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:15:36,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:15:36,186 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:15:36,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:15:36,203 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:15:36,217 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:15:36,455 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 55 [2020-11-30 00:15:36,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 30.11 12:15:36 BoogieIcfgContainer [2020-11-30 00:15:36,553 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-30 00:15:36,556 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:15:36,557 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:15:36,557 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:15:36,557 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:15:33" (3/4) ... [2020-11-30 00:15:36,560 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2020-11-30 00:15:36,618 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_0a0abb41-7507-4bda-aaaf-6b1f58184d32/bin/uautomizer/witness.graphml [2020-11-30 00:15:36,618 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:15:36,620 INFO L168 Benchmark]: Toolchain (without parser) took 3999.22 ms. Allocated memory was 107.0 MB in the beginning and 130.0 MB in the end (delta: 23.1 MB). Free memory was 74.3 MB in the beginning and 56.4 MB in the end (delta: 17.9 MB). Peak memory consumption was 40.6 MB. Max. memory is 16.1 GB. [2020-11-30 00:15:36,621 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 77.6 MB. Free memory was 35.5 MB in the beginning and 35.4 MB in the end (delta: 62.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:15:36,621 INFO L168 Benchmark]: CACSL2BoogieTranslator took 652.91 ms. Allocated memory is still 107.0 MB. Free memory was 74.0 MB in the beginning and 68.3 MB in the end (delta: 5.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 00:15:36,622 INFO L168 Benchmark]: Boogie Procedure Inliner took 63.16 ms. Allocated memory is still 107.0 MB. Free memory was 68.3 MB in the beginning and 66.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:15:36,623 INFO L168 Benchmark]: Boogie Preprocessor took 29.64 ms. Allocated memory is still 107.0 MB. Free memory was 66.5 MB in the beginning and 65.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:15:36,623 INFO L168 Benchmark]: RCFGBuilder took 434.24 ms. Allocated memory is still 107.0 MB. Free memory was 65.1 MB in the beginning and 53.1 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-30 00:15:36,624 INFO L168 Benchmark]: BuchiAutomizer took 2744.08 ms. Allocated memory was 107.0 MB in the beginning and 130.0 MB in the end (delta: 23.1 MB). Free memory was 53.1 MB in the beginning and 57.4 MB in the end (delta: -4.4 MB). Peak memory consumption was 20.3 MB. Max. memory is 16.1 GB. [2020-11-30 00:15:36,624 INFO L168 Benchmark]: Witness Printer took 62.05 ms. Allocated memory is still 130.0 MB. Free memory was 57.4 MB in the beginning and 56.4 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:15:36,630 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 77.6 MB. Free memory was 35.5 MB in the beginning and 35.4 MB in the end (delta: 62.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 652.91 ms. Allocated memory is still 107.0 MB. Free memory was 74.0 MB in the beginning and 68.3 MB in the end (delta: 5.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 63.16 ms. Allocated memory is still 107.0 MB. Free memory was 68.3 MB in the beginning and 66.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 29.64 ms. Allocated memory is still 107.0 MB. Free memory was 66.5 MB in the beginning and 65.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 434.24 ms. Allocated memory is still 107.0 MB. Free memory was 65.1 MB in the beginning and 53.1 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 2744.08 ms. Allocated memory was 107.0 MB in the beginning and 130.0 MB in the end (delta: 23.1 MB). Free memory was 53.1 MB in the beginning and 57.4 MB in the end (delta: -4.4 MB). Peak memory consumption was 20.3 MB. Max. memory is 16.1 GB. * Witness Printer took 62.05 ms. Allocated memory is still 130.0 MB. Free memory was 57.4 MB in the beginning and 56.4 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #length * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 2 terminating modules (1 trivial, 1 deterministic, 0 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function 2 * unknown-#length-unknown[__builtin_alloca(length*sizeof(int))] + -4 * i + -1 * arr and consists of 6 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 2.6s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 2.2s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 10 states and ocurred in iteration 1. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 15 SDtfs, 21 SDslu, 11 SDs, 0 SdLazy, 29 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU1 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital100 mio100 ax100 hnf99 lsp93 ukn82 mio100 lsp64 div100 bol100 ite100 ukn100 eq167 hnf91 smp100 dnf100 smp100 tf100 neg100 sie102 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 19ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 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 {NULL=0, \result=0, NULL=1, arr=2, arr=0, i=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1662d=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4cca834c=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@12c05dce=0, length=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTArraySubscriptExpression@747c1e79=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@12c05dce=2, j=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@65b92165=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