./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-memory-alloca/Urban-2013WST-Fig1-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_cf9cc808-cbea-46ff-bcd7-66ee3371a556/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_cf9cc808-cbea-46ff-bcd7-66ee3371a556/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_cf9cc808-cbea-46ff-bcd7-66ee3371a556/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_cf9cc808-cbea-46ff-bcd7-66ee3371a556/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-memory-alloca/Urban-2013WST-Fig1-alloca.i -s /tmp/vcloud-vcloud-master/worker/run_dir_cf9cc808-cbea-46ff-bcd7-66ee3371a556/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_cf9cc808-cbea-46ff-bcd7-66ee3371a556/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 ccb5cb9edc315122662555ec62bb7adf5b85f05c ................................................................................................................................................................................................................................................................................. 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 [2020-11-29 23:19:03,548 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 23:19:03,557 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 23:19:03,629 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 23:19:03,630 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 23:19:03,638 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 23:19:03,643 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 23:19:03,652 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 23:19:03,655 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 23:19:03,656 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 23:19:03,658 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 23:19:03,659 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 23:19:03,660 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 23:19:03,662 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 23:19:03,663 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 23:19:03,667 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 23:19:03,669 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 23:19:03,676 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 23:19:03,684 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 23:19:03,694 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 23:19:03,697 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 23:19:03,700 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 23:19:03,703 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 23:19:03,704 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 23:19:03,709 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 23:19:03,710 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 23:19:03,710 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 23:19:03,713 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 23:19:03,713 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 23:19:03,715 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 23:19:03,715 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 23:19:03,717 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 23:19:03,719 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 23:19:03,721 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 23:19:03,722 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 23:19:03,722 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 23:19:03,723 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 23:19:03,724 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 23:19:03,724 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 23:19:03,725 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 23:19:03,727 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 23:19:03,728 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_cf9cc808-cbea-46ff-bcd7-66ee3371a556/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-11-29 23:19:03,782 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 23:19:03,782 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 23:19:03,784 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 23:19:03,785 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 23:19:03,785 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 23:19:03,785 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-29 23:19:03,786 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-29 23:19:03,786 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-29 23:19:03,786 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-29 23:19:03,786 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-29 23:19:03,788 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-29 23:19:03,788 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 23:19:03,788 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 23:19:03,789 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 23:19:03,789 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 23:19:03,789 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-29 23:19:03,790 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-29 23:19:03,790 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-29 23:19:03,790 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 23:19:03,790 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-29 23:19:03,790 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 23:19:03,791 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-29 23:19:03,791 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 23:19:03,791 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 23:19:03,791 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-29 23:19:03,792 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 23:19:03,792 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 23:19:03,792 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 23:19:03,793 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-29 23:19:03,794 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-29 23:19:03,794 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_cf9cc808-cbea-46ff-bcd7-66ee3371a556/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_cf9cc808-cbea-46ff-bcd7-66ee3371a556/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ccb5cb9edc315122662555ec62bb7adf5b85f05c [2020-11-29 23:19:04,129 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 23:19:04,169 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 23:19:04,175 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 23:19:04,178 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 23:19:04,179 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 23:19:04,180 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_cf9cc808-cbea-46ff-bcd7-66ee3371a556/bin/uautomizer/../../sv-benchmarks/c/termination-memory-alloca/Urban-2013WST-Fig1-alloca.i [2020-11-29 23:19:04,294 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_cf9cc808-cbea-46ff-bcd7-66ee3371a556/bin/uautomizer/data/758be58b2/bce6df14b2a4449f90e28ece258980c3/FLAGb5ad5a0e3 [2020-11-29 23:19:04,971 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 23:19:04,972 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_cf9cc808-cbea-46ff-bcd7-66ee3371a556/sv-benchmarks/c/termination-memory-alloca/Urban-2013WST-Fig1-alloca.i [2020-11-29 23:19:04,993 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_cf9cc808-cbea-46ff-bcd7-66ee3371a556/bin/uautomizer/data/758be58b2/bce6df14b2a4449f90e28ece258980c3/FLAGb5ad5a0e3 [2020-11-29 23:19:05,295 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_cf9cc808-cbea-46ff-bcd7-66ee3371a556/bin/uautomizer/data/758be58b2/bce6df14b2a4449f90e28ece258980c3 [2020-11-29 23:19:05,298 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 23:19:05,300 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 23:19:05,304 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 23:19:05,304 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 23:19:05,308 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 23:19:05,309 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:19:05" (1/1) ... [2020-11-29 23:19:05,312 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71077534 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:19:05, skipping insertion in model container [2020-11-29 23:19:05,313 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:19:05" (1/1) ... [2020-11-29 23:19:05,322 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 23:19:05,382 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 23:19:05,669 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:19:05,679 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 23:19:05,720 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:19:05,785 INFO L208 MainTranslator]: Completed translation [2020-11-29 23:19:05,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:19:05 WrapperNode [2020-11-29 23:19:05,787 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 23:19:05,788 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 23:19:05,789 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 23:19:05,789 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 23:19:05,800 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:19:05" (1/1) ... [2020-11-29 23:19:05,828 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:19:05" (1/1) ... [2020-11-29 23:19:05,851 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 23:19:05,854 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 23:19:05,854 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 23:19:05,854 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 23:19:05,864 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:19:05" (1/1) ... [2020-11-29 23:19:05,864 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:19:05" (1/1) ... [2020-11-29 23:19:05,869 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:19:05" (1/1) ... [2020-11-29 23:19:05,870 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:19:05" (1/1) ... [2020-11-29 23:19:05,874 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:19:05" (1/1) ... [2020-11-29 23:19:05,878 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:19:05" (1/1) ... [2020-11-29 23:19:05,880 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:19:05" (1/1) ... [2020-11-29 23:19:05,882 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 23:19:05,883 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 23:19:05,883 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 23:19:05,883 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 23:19:05,884 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:19:05" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cf9cc808-cbea-46ff-bcd7-66ee3371a556/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 [2020-11-29 23:19:05,957 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-29 23:19:05,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-29 23:19:05,957 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 23:19:05,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 23:19:05,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 23:19:05,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 23:19:06,239 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 23:19:06,240 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-29 23:19:06,241 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:19:06 BoogieIcfgContainer [2020-11-29 23:19:06,242 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 23:19:06,243 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-29 23:19:06,243 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-29 23:19:06,263 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-29 23:19:06,264 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 23:19:06,264 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 11:19:05" (1/3) ... [2020-11-29 23:19:06,266 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5b1f4026 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 11:19:06, skipping insertion in model container [2020-11-29 23:19:06,266 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 23:19:06,266 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:19:05" (2/3) ... [2020-11-29 23:19:06,267 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5b1f4026 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 11:19:06, skipping insertion in model container [2020-11-29 23:19:06,267 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 23:19:06,267 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:19:06" (3/3) ... [2020-11-29 23:19:06,269 INFO L373 chiAutomizerObserver]: Analyzing ICFG Urban-2013WST-Fig1-alloca.i [2020-11-29 23:19:06,348 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-29 23:19:06,348 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-29 23:19:06,349 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-29 23:19:06,349 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 23:19:06,349 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 23:19:06,349 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-29 23:19:06,349 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 23:19:06,350 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-29 23:19:06,364 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2020-11-29 23:19:06,403 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-29 23:19:06,404 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 23:19:06,404 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 23:19:06,411 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-11-29 23:19:06,411 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-29 23:19:06,412 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-29 23:19:06,412 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2020-11-29 23:19:06,413 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-29 23:19:06,413 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 23:19:06,413 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 23:19:06,414 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-11-29 23:19:06,414 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-29 23:19:06,421 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 3#L-1true havoc main_#res;havoc main_#t~malloc2.base, main_#t~malloc2.offset, main_#t~mem4, main_#t~mem5, main_#t~mem3, main_~x~0.base, main_~x~0.offset;call main_#t~malloc2.base, main_#t~malloc2.offset := #Ultimate.allocOnStack(4);main_~x~0.base, main_~x~0.offset := main_#t~malloc2.base, main_#t~malloc2.offset; 5#L549-2true [2020-11-29 23:19:06,422 INFO L796 eck$LassoCheckResult]: Loop: 5#L549-2true call main_#t~mem3 := read~int(main_~x~0.base, main_~x~0.offset, 4); 6#L548-1true assume !!(main_#t~mem3 <= 10);havoc main_#t~mem3;call main_#t~mem4 := read~int(main_~x~0.base, main_~x~0.offset, 4); 11#L549true assume !(main_#t~mem4 > 6);havoc main_#t~mem4; 5#L549-2true [2020-11-29 23:19:06,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:19:06,428 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2020-11-29 23:19:06,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:19:06,437 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408926067] [2020-11-29 23:19:06,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:19:06,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:19:06,545 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:19:06,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:19:06,560 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:19:06,581 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:19:06,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:19:06,584 INFO L82 PathProgramCache]: Analyzing trace with hash 36907, now seen corresponding path program 1 times [2020-11-29 23:19:06,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:19:06,584 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949924570] [2020-11-29 23:19:06,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:19:06,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:19:06,601 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:19:06,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:19:06,610 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:19:06,614 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:19:06,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:19:06,616 INFO L82 PathProgramCache]: Analyzing trace with hash 28695849, now seen corresponding path program 1 times [2020-11-29 23:19:06,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:19:06,617 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964909295] [2020-11-29 23:19:06,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:19:06,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:19:06,639 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:19:06,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:19:06,663 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:19:06,668 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:19:06,784 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 24 [2020-11-29 23:19:06,951 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 31 [2020-11-29 23:19:07,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.11 11:19:07 BoogieIcfgContainer [2020-11-29 23:19:07,047 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-29 23:19:07,049 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 23:19:07,049 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 23:19:07,049 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 23:19:07,050 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:19:06" (3/4) ... [2020-11-29 23:19:07,062 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2020-11-29 23:19:07,107 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_cf9cc808-cbea-46ff-bcd7-66ee3371a556/bin/uautomizer/witness.graphml [2020-11-29 23:19:07,107 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 23:19:07,110 INFO L168 Benchmark]: Toolchain (without parser) took 1808.37 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 64.3 MB in the beginning and 62.0 MB in the end (delta: 2.2 MB). Peak memory consumption was 21.9 MB. Max. memory is 16.1 GB. [2020-11-29 23:19:07,111 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 94.4 MB. Free memory was 53.1 MB in the beginning and 53.1 MB in the end (delta: 44.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:19:07,114 INFO L168 Benchmark]: CACSL2BoogieTranslator took 483.49 ms. Allocated memory is still 94.4 MB. Free memory was 64.3 MB in the beginning and 62.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 23:19:07,121 INFO L168 Benchmark]: Boogie Procedure Inliner took 63.33 ms. Allocated memory is still 94.4 MB. Free memory was 62.9 MB in the beginning and 61.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:19:07,122 INFO L168 Benchmark]: Boogie Preprocessor took 28.62 ms. Allocated memory is still 94.4 MB. Free memory was 61.2 MB in the beginning and 60.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:19:07,123 INFO L168 Benchmark]: RCFGBuilder took 358.82 ms. Allocated memory is still 94.4 MB. Free memory was 60.1 MB in the beginning and 48.6 MB in the end (delta: 11.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 23:19:07,124 INFO L168 Benchmark]: BuchiAutomizer took 804.47 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 48.2 MB in the beginning and 63.6 MB in the end (delta: -15.3 MB). Peak memory consumption was 5.8 MB. Max. memory is 16.1 GB. [2020-11-29 23:19:07,125 INFO L168 Benchmark]: Witness Printer took 58.43 ms. Allocated memory is still 113.2 MB. Free memory was 63.6 MB in the beginning and 62.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:19:07,136 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 94.4 MB. Free memory was 53.1 MB in the beginning and 53.1 MB in the end (delta: 44.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 483.49 ms. Allocated memory is still 94.4 MB. Free memory was 64.3 MB in the beginning and 62.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 63.33 ms. Allocated memory is still 94.4 MB. Free memory was 62.9 MB in the beginning and 61.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 28.62 ms. Allocated memory is still 94.4 MB. Free memory was 61.2 MB in the beginning and 60.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 358.82 ms. Allocated memory is still 94.4 MB. Free memory was 60.1 MB in the beginning and 48.6 MB in the end (delta: 11.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 804.47 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 48.2 MB in the beginning and 63.6 MB in the end (delta: -15.3 MB). Peak memory consumption was 5.8 MB. Max. memory is 16.1 GB. * Witness Printer took 58.43 ms. Allocated memory is still 113.2 MB. Free memory was 63.6 MB in the beginning and 62.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Trivial decomposition into one nonterminating module. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.6s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.6s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 0. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: No data available LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: 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: 548]: 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 {org.eclipse.cdt.internal.core.dom.parser.c.CASTIdExpression@63f2b8b9=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@ec9cae1=2, NULL=0, NULL=0, x=2, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@ec9cae1=0, x=0, NULL=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTIdExpression@46ddd9d3=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTIdExpression@34977fd1=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 548]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L547] int* x = __builtin_alloca (sizeof(int)); Loop: [L548] EXPR \read(*x) [L548] COND TRUE *x <= 10 [L549] EXPR \read(*x) [L549] COND FALSE !(*x > 6) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...