./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-memory-alloca/openbsd_cmemrchr-alloca-1.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_ee51bb03-5d4a-4f0e-9960-8a154a013247/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_ee51bb03-5d4a-4f0e-9960-8a154a013247/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_ee51bb03-5d4a-4f0e-9960-8a154a013247/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_ee51bb03-5d4a-4f0e-9960-8a154a013247/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-memory-alloca/openbsd_cmemrchr-alloca-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_ee51bb03-5d4a-4f0e-9960-8a154a013247/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_ee51bb03-5d4a-4f0e-9960-8a154a013247/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 73af3db471e3034ab4850ccc68dc5792ec5eb945 ....................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 03:02:21,275 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:02:21,278 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:02:21,334 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:02:21,335 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:02:21,341 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:02:21,343 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:02:21,346 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:02:21,349 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:02:21,350 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:02:21,352 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:02:21,354 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:02:21,355 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:02:21,378 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:02:21,381 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:02:21,384 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:02:21,385 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:02:21,391 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:02:21,395 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:02:21,404 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:02:21,406 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:02:21,408 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:02:21,410 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:02:21,412 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:02:21,422 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:02:21,423 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:02:21,423 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:02:21,426 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:02:21,427 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:02:21,428 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:02:21,429 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:02:21,430 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:02:21,433 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:02:21,434 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:02:21,435 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:02:21,436 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:02:21,437 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:02:21,437 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:02:21,437 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:02:21,439 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:02:21,440 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:02:21,442 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_ee51bb03-5d4a-4f0e-9960-8a154a013247/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-11-28 03:02:21,487 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:02:21,487 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:02:21,489 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:02:21,489 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:02:21,489 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:02:21,490 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-28 03:02:21,490 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-28 03:02:21,490 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-28 03:02:21,490 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-28 03:02:21,491 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-28 03:02:21,491 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-28 03:02:21,491 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:02:21,491 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 03:02:21,492 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:02:21,492 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:02:21,492 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-28 03:02:21,492 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-28 03:02:21,493 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-28 03:02:21,493 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:02:21,493 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-28 03:02:21,493 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:02:21,494 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-28 03:02:21,494 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:02:21,494 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:02:21,494 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-28 03:02:21,495 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:02:21,495 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:02:21,495 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:02:21,495 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-28 03:02:21,497 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-28 03:02:21,497 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_ee51bb03-5d4a-4f0e-9960-8a154a013247/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_ee51bb03-5d4a-4f0e-9960-8a154a013247/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 73af3db471e3034ab4850ccc68dc5792ec5eb945 [2020-11-28 03:02:21,781 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:02:21,820 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:02:21,826 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:02:21,829 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:02:21,831 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:02:21,832 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_ee51bb03-5d4a-4f0e-9960-8a154a013247/bin/uautomizer/../../sv-benchmarks/c/termination-memory-alloca/openbsd_cmemrchr-alloca-1.i [2020-11-28 03:02:21,924 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ee51bb03-5d4a-4f0e-9960-8a154a013247/bin/uautomizer/data/16fe4931b/c0ca7a09c7be422e9bab3ff3eb7d6d31/FLAG07f8b7012 [2020-11-28 03:02:22,508 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:02:22,513 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_ee51bb03-5d4a-4f0e-9960-8a154a013247/sv-benchmarks/c/termination-memory-alloca/openbsd_cmemrchr-alloca-1.i [2020-11-28 03:02:22,539 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ee51bb03-5d4a-4f0e-9960-8a154a013247/bin/uautomizer/data/16fe4931b/c0ca7a09c7be422e9bab3ff3eb7d6d31/FLAG07f8b7012 [2020-11-28 03:02:22,801 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_ee51bb03-5d4a-4f0e-9960-8a154a013247/bin/uautomizer/data/16fe4931b/c0ca7a09c7be422e9bab3ff3eb7d6d31 [2020-11-28 03:02:22,803 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:02:22,805 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:02:22,813 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:02:22,814 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:02:22,817 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:02:22,818 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:02:22" (1/1) ... [2020-11-28 03:02:22,828 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ee56a3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:22, skipping insertion in model container [2020-11-28 03:02:22,828 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:02:22" (1/1) ... [2020-11-28 03:02:22,835 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:02:22,883 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:02:23,262 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:02:23,287 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:02:23,356 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:02:23,418 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:02:23,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:23 WrapperNode [2020-11-28 03:02:23,419 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:02:23,421 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:02:23,421 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:02:23,421 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:02:23,431 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:23" (1/1) ... [2020-11-28 03:02:23,459 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:23" (1/1) ... [2020-11-28 03:02:23,481 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:02:23,482 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:02:23,482 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:02:23,482 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:02:23,492 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:23" (1/1) ... [2020-11-28 03:02:23,492 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:23" (1/1) ... [2020-11-28 03:02:23,496 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:23" (1/1) ... [2020-11-28 03:02:23,496 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:23" (1/1) ... [2020-11-28 03:02:23,503 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:23" (1/1) ... [2020-11-28 03:02:23,508 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:23" (1/1) ... [2020-11-28 03:02:23,511 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:23" (1/1) ... [2020-11-28 03:02:23,515 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:02:23,516 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:02:23,516 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:02:23,516 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:02:23,522 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:23" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ee51bb03-5d4a-4f0e-9960-8a154a013247/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 [2020-11-28 03:02:23,595 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 03:02:23,596 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:02:23,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 03:02:23,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:02:23,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:02:24,151 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:02:24,151 INFO L298 CfgBuilder]: Removed 7 assume(true) statements. [2020-11-28 03:02:24,153 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:02:24 BoogieIcfgContainer [2020-11-28 03:02:24,153 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:02:24,154 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-28 03:02:24,154 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-28 03:02:24,158 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-28 03:02:24,159 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 03:02:24,159 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 03:02:22" (1/3) ... [2020-11-28 03:02:24,161 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5c52765f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 03:02:24, skipping insertion in model container [2020-11-28 03:02:24,161 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 03:02:24,161 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:23" (2/3) ... [2020-11-28 03:02:24,162 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5c52765f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 03:02:24, skipping insertion in model container [2020-11-28 03:02:24,162 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 03:02:24,162 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:02:24" (3/3) ... [2020-11-28 03:02:24,164 INFO L373 chiAutomizerObserver]: Analyzing ICFG openbsd_cmemrchr-alloca-1.i [2020-11-28 03:02:24,218 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-28 03:02:24,219 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-28 03:02:24,219 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-28 03:02:24,219 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:02:24,220 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:02:24,220 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-28 03:02:24,220 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:02:24,220 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-28 03:02:24,250 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states. [2020-11-28 03:02:24,267 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-11-28 03:02:24,267 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:02:24,267 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:02:24,277 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-28 03:02:24,277 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-11-28 03:02:24,278 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-28 03:02:24,278 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states. [2020-11-28 03:02:24,280 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-11-28 03:02:24,280 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:02:24,280 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:02:24,281 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-28 03:02:24,281 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-11-28 03:02:24,296 INFO L794 eck$LassoCheckResult]: Stem: 8#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;~MAX~0 := 100000; 7#L-1true havoc main_#res;havoc main_#t~nondet5, main_#t~nondet6, main_#t~nondet7, main_#t~malloc8.base, main_#t~malloc8.offset, main_#t~ret9.base, main_#t~ret9.offset, main_~length~0, main_~n~0, main_~c~0, main_~nondetArea~0.base, main_~nondetArea~0.offset;main_~length~0 := main_#t~nondet5;havoc main_#t~nondet5;main_~n~0 := main_#t~nondet6;havoc main_#t~nondet6;main_~c~0 := main_#t~nondet7;havoc main_#t~nondet7; 5#L565true assume !(main_~length~0 < 1); 9#L565-2true assume !(main_~n~0 < 1 || main_~n~0 > ~MAX~0); 4#L568-1true call main_#t~malloc8.base, main_#t~malloc8.offset := #Ultimate.allocOnStack(main_~n~0);main_~nondetArea~0.base, main_~nondetArea~0.offset := main_#t~malloc8.base, main_#t~malloc8.offset;cmemrchr_#in~s.base, cmemrchr_#in~s.offset, cmemrchr_#in~c, cmemrchr_#in~n := main_~nondetArea~0.base, main_~nondetArea~0.offset, main_~c~0, main_~n~0;havoc cmemrchr_#res.base, cmemrchr_#res.offset;havoc cmemrchr_#t~pre3.base, cmemrchr_#t~pre3.offset, cmemrchr_#t~mem4, cmemrchr_#t~pre2, cmemrchr_~s.base, cmemrchr_~s.offset, cmemrchr_~c, cmemrchr_~n, cmemrchr_~cp~0.base, cmemrchr_~cp~0.offset;cmemrchr_~s.base, cmemrchr_~s.offset := cmemrchr_#in~s.base, cmemrchr_#in~s.offset;cmemrchr_~c := cmemrchr_#in~c;cmemrchr_~n := cmemrchr_#in~n;havoc cmemrchr_~cp~0.base, cmemrchr_~cp~0.offset; 12#L551true assume 0 != cmemrchr_~n % 4294967296;cmemrchr_~cp~0.base, cmemrchr_~cp~0.offset := cmemrchr_~s.base, cmemrchr_~s.offset + cmemrchr_~n % 4294967296; 17#L553-4true [2020-11-28 03:02:24,296 INFO L796 eck$LassoCheckResult]: Loop: 17#L553-4true cmemrchr_#t~pre3.base, cmemrchr_#t~pre3.offset := cmemrchr_~cp~0.base, cmemrchr_~cp~0.offset - 1;cmemrchr_~cp~0.base, cmemrchr_~cp~0.offset := cmemrchr_~cp~0.base, cmemrchr_~cp~0.offset - 1;call cmemrchr_#t~mem4 := read~int(cmemrchr_#t~pre3.base, cmemrchr_#t~pre3.offset, 1); 6#L554true assume !(cmemrchr_#t~mem4 % 256 == cmemrchr_~c % 256);havoc cmemrchr_#t~pre3.base, cmemrchr_#t~pre3.offset;havoc cmemrchr_#t~mem4; 10#L553-1true cmemrchr_#t~pre2 := cmemrchr_~n - 1;cmemrchr_~n := cmemrchr_~n - 1; 13#L553-2true assume !!(0 != cmemrchr_#t~pre2 % 4294967296);havoc cmemrchr_#t~pre2; 17#L553-4true [2020-11-28 03:02:24,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:02:24,302 INFO L82 PathProgramCache]: Analyzing trace with hash 889572236, now seen corresponding path program 1 times [2020-11-28 03:02:24,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:02:24,310 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810273075] [2020-11-28 03:02:24,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:02:24,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:02:24,421 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:02:24,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:02:24,450 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:02:24,475 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:02:24,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:02:24,477 INFO L82 PathProgramCache]: Analyzing trace with hash 1605803, now seen corresponding path program 1 times [2020-11-28 03:02:24,478 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:02:24,478 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327406712] [2020-11-28 03:02:24,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:02:24,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:02:24,506 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:02:24,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:02:24,525 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:02:24,534 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:02:24,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:02:24,536 INFO L82 PathProgramCache]: Analyzing trace with hash 1592233654, now seen corresponding path program 1 times [2020-11-28 03:02:24,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:02:24,537 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87034487] [2020-11-28 03:02:24,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:02:24,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:02:24,622 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:02:24,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:02:24,660 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:02:24,669 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:02:25,152 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 71 [2020-11-28 03:02:25,282 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-11-28 03:02:25,306 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:02:25,306 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:02:25,307 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:02:25,307 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:02:25,307 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 03:02:25,308 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:02:25,308 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:02:25,308 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:02:25,308 INFO L133 ssoRankerPreferences]: Filename of dumped script: openbsd_cmemrchr-alloca-1.i_Iteration1_Lasso [2020-11-28 03:02:25,309 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:02:25,309 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:02:25,340 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:02:25,354 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:02:25,361 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:02:25,627 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 53 [2020-11-28 03:02:25,737 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:02:25,749 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:02:25,753 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:02:25,757 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:02:25,766 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:02:25,771 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:02:25,777 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:02:25,781 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:02:25,786 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:02:25,791 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:02:25,796 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:02:25,800 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:02:25,806 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:02:25,810 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:02:25,815 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:02:25,819 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:02:26,039 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2020-11-28 03:02:26,211 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 34 [2020-11-28 03:02:26,596 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2020-11-28 03:02:26,800 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 28 [2020-11-28 03:02:26,903 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:02:26,908 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ee51bb03-5d4a-4f0e-9960-8a154a013247/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) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:02:26,919 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 [2020-11-28 03:02:26,922 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:02:26,922 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:02:26,923 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:02:26,923 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:02:26,923 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:02:26,926 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:02:26,926 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:02:26,932 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ee51bb03-5d4a-4f0e-9960-8a154a013247/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) [2020-11-28 03:02:26,997 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 [2020-11-28 03:02:26,999 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:02:27,000 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:02:27,000 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:02:27,000 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:02:27,000 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:02:27,001 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:02:27,002 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:02:27,016 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ee51bb03-5d4a-4f0e-9960-8a154a013247/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 [2020-11-28 03:02:27,069 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 [2020-11-28 03:02:27,071 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:02:27,071 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:02:27,072 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:02:27,072 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:02:27,091 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:02:27,104 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:02:27,116 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ee51bb03-5d4a-4f0e-9960-8a154a013247/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) [2020-11-28 03:02:27,181 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 [2020-11-28 03:02:27,186 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:02:27,187 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:02:27,187 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:02:27,187 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:02:27,200 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:02:27,201 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:02:27,213 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ee51bb03-5d4a-4f0e-9960-8a154a013247/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) [2020-11-28 03:02:27,264 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 [2020-11-28 03:02:27,268 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:02:27,268 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:02:27,268 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:02:27,269 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:02:27,297 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:02:27,298 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:02:27,329 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 03:02:27,387 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2020-11-28 03:02:27,387 INFO L444 ModelExtractionUtils]: 32 out of 37 variables were initially zero. Simplification set additionally 3 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ee51bb03-5d4a-4f0e-9960-8a154a013247/bin/uautomizer/z3 Starting monitored process 7 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 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:02:27,455 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-28 03:02:27,497 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-11-28 03:02:27,497 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 03:02:27,498 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_cmemrchr_~cp~0.offset) = 1*ULTIMATE.start_cmemrchr_~cp~0.offset Supporting invariants [] [2020-11-28 03:02:27,571 INFO L297 tatePredicateManager]: 3 out of 3 supporting invariants were superfluous and have been removed [2020-11-28 03:02:27,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:02:27,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:02:27,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:02:27,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:02:27,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:02:27,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-28 03:02:27,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:02:27,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:02:27,805 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-11-28 03:02:27,806 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states. Second operand 3 states. [2020-11-28 03:02:27,859 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states.. Second operand 3 states. Result 35 states and 40 transitions. Complement of second has 5 states. [2020-11-28 03:02:27,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-28 03:02:27,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-28 03:02:27,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 30 transitions. [2020-11-28 03:02:27,864 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 30 transitions. Stem has 6 letters. Loop has 4 letters. [2020-11-28 03:02:27,865 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:02:27,866 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 30 transitions. Stem has 10 letters. Loop has 4 letters. [2020-11-28 03:02:27,866 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:02:27,866 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 30 transitions. Stem has 6 letters. Loop has 8 letters. [2020-11-28 03:02:27,867 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:02:27,868 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 40 transitions. [2020-11-28 03:02:27,875 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-28 03:02:27,878 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 0 states and 0 transitions. [2020-11-28 03:02:27,879 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-28 03:02:27,880 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-28 03:02:27,880 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-28 03:02:27,881 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-28 03:02:27,881 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:02:27,881 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:02:27,881 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:02:27,881 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-28 03:02:27,882 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-11-28 03:02:27,882 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-28 03:02:27,882 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-11-28 03:02:27,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 03:02:27 BoogieIcfgContainer [2020-11-28 03:02:27,891 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-28 03:02:27,892 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:02:27,892 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:02:27,892 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:02:27,892 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:02:24" (3/4) ... [2020-11-28 03:02:27,896 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-28 03:02:27,896 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:02:27,897 INFO L168 Benchmark]: Toolchain (without parser) took 5091.93 ms. Allocated memory was 86.0 MB in the beginning and 130.0 MB in the end (delta: 44.0 MB). Free memory was 55.7 MB in the beginning and 91.8 MB in the end (delta: -36.2 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. [2020-11-28 03:02:27,898 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 86.0 MB. Free memory was 45.9 MB in the beginning and 45.8 MB in the end (delta: 75.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:02:27,899 INFO L168 Benchmark]: CACSL2BoogieTranslator took 606.56 ms. Allocated memory is still 86.0 MB. Free memory was 55.4 MB in the beginning and 53.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 03:02:27,899 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.30 ms. Allocated memory is still 86.0 MB. Free memory was 53.7 MB in the beginning and 52.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:02:27,900 INFO L168 Benchmark]: Boogie Preprocessor took 33.39 ms. Allocated memory is still 86.0 MB. Free memory was 52.0 MB in the beginning and 50.8 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:02:27,901 INFO L168 Benchmark]: RCFGBuilder took 637.18 ms. Allocated memory is still 86.0 MB. Free memory was 50.4 MB in the beginning and 36.5 MB in the end (delta: 13.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-28 03:02:27,902 INFO L168 Benchmark]: BuchiAutomizer took 3737.41 ms. Allocated memory was 86.0 MB in the beginning and 130.0 MB in the end (delta: 44.0 MB). Free memory was 36.5 MB in the beginning and 92.9 MB in the end (delta: -56.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:02:27,902 INFO L168 Benchmark]: Witness Printer took 4.22 ms. Allocated memory is still 130.0 MB. Free memory was 92.9 MB in the beginning and 91.8 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:02:27,908 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 86.0 MB. Free memory was 45.9 MB in the beginning and 45.8 MB in the end (delta: 75.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 606.56 ms. Allocated memory is still 86.0 MB. Free memory was 55.4 MB in the beginning and 53.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 60.30 ms. Allocated memory is still 86.0 MB. Free memory was 53.7 MB in the beginning and 52.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 33.39 ms. Allocated memory is still 86.0 MB. Free memory was 52.0 MB in the beginning and 50.8 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 637.18 ms. Allocated memory is still 86.0 MB. Free memory was 50.4 MB in the beginning and 36.5 MB in the end (delta: 13.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 3737.41 ms. Allocated memory was 86.0 MB in the beginning and 130.0 MB in the end (delta: 44.0 MB). Free memory was 36.5 MB in the beginning and 92.9 MB in the end (delta: -56.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 4.22 ms. Allocated memory is still 130.0 MB. Free memory was 92.9 MB in the beginning and 91.8 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.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 1 terminating modules (0 trivial, 1 deterministic, 0 nondeterministic). One deterministic module has affine ranking function cp and consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.6s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 3.2s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 1. 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 0 states and ocurred in iteration 1. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 21 SDtfs, 21 SDslu, 8 SDs, 0 SdLazy, 3 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital143 mio100 ax112 hnf98 lsp82 ukn97 mio100 lsp56 div205 bol100 ite100 ukn100 eq168 hnf64 smp95 dnf100 smp100 tf100 neg99 sie101 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 50ms VariablesStem: 2 VariablesLoop: 3 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...