./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-memory-alloca/BrockschmidtCookFuhs-2013CAV-Introduction-alloca.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 54858612 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-memory-alloca/BrockschmidtCookFuhs-2013CAV-Introduction-alloca.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash f932c1059c6a140c081a3f9115dadbff28d03ec1 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-5485861 [2020-10-26 04:18:43,352 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 04:18:43,357 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 04:18:43,412 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 04:18:43,413 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 04:18:43,419 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 04:18:43,422 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 04:18:43,430 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 04:18:43,437 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 04:18:43,443 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 04:18:43,445 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 04:18:43,447 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 04:18:43,447 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 04:18:43,451 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 04:18:43,453 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 04:18:43,455 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 04:18:43,457 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 04:18:43,460 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 04:18:43,464 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 04:18:43,472 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 04:18:43,474 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 04:18:43,476 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 04:18:43,479 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 04:18:43,480 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 04:18:43,486 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 04:18:43,487 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 04:18:43,487 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 04:18:43,490 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 04:18:43,491 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 04:18:43,492 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 04:18:43,492 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 04:18:43,493 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 04:18:43,496 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 04:18:43,497 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 04:18:43,498 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 04:18:43,499 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 04:18:43,502 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 04:18:43,502 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 04:18:43,502 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 04:18:43,505 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 04:18:43,506 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 04:18:43,507 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-10-26 04:18:43,564 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 04:18:43,564 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 04:18:43,568 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 04:18:43,569 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 04:18:43,569 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 04:18:43,569 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-26 04:18:43,569 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-26 04:18:43,570 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-26 04:18:43,570 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-26 04:18:43,571 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-26 04:18:43,572 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-26 04:18:43,572 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 04:18:43,573 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-26 04:18:43,573 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 04:18:43,573 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 04:18:43,573 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-26 04:18:43,574 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-26 04:18:43,574 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-26 04:18:43,574 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 04:18:43,574 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-26 04:18:43,575 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 04:18:43,575 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-26 04:18:43,575 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 04:18:43,576 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 04:18:43,576 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-26 04:18:43,576 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 04:18:43,576 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 04:18:43,577 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 04:18:43,577 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-26 04:18:43,579 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-26 04:18:43,579 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f932c1059c6a140c081a3f9115dadbff28d03ec1 [2020-10-26 04:18:44,083 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 04:18:44,125 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 04:18:44,128 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 04:18:44,129 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 04:18:44,130 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 04:18:44,131 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-memory-alloca/BrockschmidtCookFuhs-2013CAV-Introduction-alloca.i [2020-10-26 04:18:44,228 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d1a2f9ae/f25627a1b24745da82e8bd8879e0c89d/FLAG88df6f815 [2020-10-26 04:18:45,029 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 04:18:45,030 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-memory-alloca/BrockschmidtCookFuhs-2013CAV-Introduction-alloca.i [2020-10-26 04:18:45,045 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d1a2f9ae/f25627a1b24745da82e8bd8879e0c89d/FLAG88df6f815 [2020-10-26 04:18:45,303 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d1a2f9ae/f25627a1b24745da82e8bd8879e0c89d [2020-10-26 04:18:45,308 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 04:18:45,317 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-26 04:18:45,322 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 04:18:45,322 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 04:18:45,328 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 04:18:45,329 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 04:18:45" (1/1) ... [2020-10-26 04:18:45,337 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2069bb7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:18:45, skipping insertion in model container [2020-10-26 04:18:45,338 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 04:18:45" (1/1) ... [2020-10-26 04:18:45,347 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 04:18:45,411 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 04:18:45,794 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 04:18:45,804 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 04:18:45,842 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 04:18:45,926 INFO L208 MainTranslator]: Completed translation [2020-10-26 04:18:45,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:18:45 WrapperNode [2020-10-26 04:18:45,927 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 04:18:45,928 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-26 04:18:45,928 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-26 04:18:45,929 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-26 04:18:45,938 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:18:45" (1/1) ... [2020-10-26 04:18:45,953 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:18:45" (1/1) ... [2020-10-26 04:18:45,974 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-26 04:18:45,975 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 04:18:45,975 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 04:18:45,976 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 04:18:45,985 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:18:45" (1/1) ... [2020-10-26 04:18:45,985 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:18:45" (1/1) ... [2020-10-26 04:18:45,988 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:18:45" (1/1) ... [2020-10-26 04:18:45,989 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:18:45" (1/1) ... [2020-10-26 04:18:45,994 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:18:45" (1/1) ... [2020-10-26 04:18:45,998 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:18:45" (1/1) ... [2020-10-26 04:18:45,999 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:18:45" (1/1) ... [2020-10-26 04:18:46,002 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 04:18:46,004 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 04:18:46,004 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 04:18:46,004 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 04:18:46,005 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:18:45" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-26 04:18:46,084 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 04:18:46,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 04:18:46,085 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 04:18:46,085 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 04:18:46,085 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 04:18:46,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 04:18:46,335 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 04:18:46,336 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-26 04:18:46,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 04:18:46 BoogieIcfgContainer [2020-10-26 04:18:46,339 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 04:18:46,341 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-26 04:18:46,341 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-26 04:18:46,347 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-26 04:18:46,348 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-26 04:18:46,348 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 26.10 04:18:45" (1/3) ... [2020-10-26 04:18:46,349 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@555333ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.10 04:18:46, skipping insertion in model container [2020-10-26 04:18:46,350 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-26 04:18:46,350 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:18:45" (2/3) ... [2020-10-26 04:18:46,350 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@555333ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.10 04:18:46, skipping insertion in model container [2020-10-26 04:18:46,350 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-26 04:18:46,351 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 04:18:46" (3/3) ... [2020-10-26 04:18:46,352 INFO L373 chiAutomizerObserver]: Analyzing ICFG BrockschmidtCookFuhs-2013CAV-Introduction-alloca.i [2020-10-26 04:18:46,422 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-26 04:18:46,422 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-26 04:18:46,422 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-26 04:18:46,423 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 04:18:46,423 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 04:18:46,423 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-26 04:18:46,423 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 04:18:46,423 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-26 04:18:46,440 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2020-10-26 04:18:46,465 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-26 04:18:46,466 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 04:18:46,466 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 04:18:46,473 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-10-26 04:18:46,474 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-26 04:18:46,474 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-10-26 04:18:46,474 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2020-10-26 04:18:46,475 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-26 04:18:46,476 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 04:18:46,476 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 04:18:46,476 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-10-26 04:18:46,477 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-26 04:18:46,485 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~malloc3.base, main_#t~malloc3.offset, main_#t~mem5, main_#t~mem6, main_#t~mem7, main_#t~mem4, main_~x~0.base, main_~x~0.offset, main_~y~0.base, main_~y~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;call main_#t~malloc3.base, main_#t~malloc3.offset := #Ultimate.allocOnStack(4);main_~y~0.base, main_~y~0.offset := main_#t~malloc3.base, main_#t~malloc3.offset;call write~int(1, main_~y~0.base, main_~y~0.offset, 4); 5#L550-3true [2020-10-26 04:18:46,486 INFO L796 eck$LassoCheckResult]: Loop: 5#L550-3true call main_#t~mem4 := read~int(main_~x~0.base, main_~x~0.offset, 4); 9#L550-1true assume !!(main_#t~mem4 > 0);havoc main_#t~mem4;call main_#t~mem5 := read~int(main_~x~0.base, main_~x~0.offset, 4);call main_#t~mem6 := read~int(main_~y~0.base, main_~y~0.offset, 4);call write~int(main_#t~mem5 - main_#t~mem6, main_~x~0.base, main_~x~0.offset, 4);havoc main_#t~mem5;havoc main_#t~mem6;call main_#t~mem7 := read~int(main_~y~0.base, main_~y~0.offset, 4);call write~int(1 + main_#t~mem7, main_~y~0.base, main_~y~0.offset, 4);havoc main_#t~mem7; 5#L550-3true [2020-10-26 04:18:46,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:18:46,493 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2020-10-26 04:18:46,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:18:46,506 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065766951] [2020-10-26 04:18:46,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:18:46,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:18:46,718 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:18:46,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:18:46,737 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:18:46,759 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:18:46,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:18:46,762 INFO L82 PathProgramCache]: Analyzing trace with hash 1190, now seen corresponding path program 1 times [2020-10-26 04:18:46,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:18:46,762 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578248891] [2020-10-26 04:18:46,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:18:46,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:18:46,787 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:18:46,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:18:46,804 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:18:46,808 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:18:46,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:18:46,811 INFO L82 PathProgramCache]: Analyzing trace with hash 925672, now seen corresponding path program 1 times [2020-10-26 04:18:46,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:18:46,811 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382950332] [2020-10-26 04:18:46,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:18:46,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:18:46,836 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:18:46,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:18:46,858 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:18:46,864 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:18:47,157 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 49 [2020-10-26 04:18:47,238 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 04:18:47,239 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 04:18:47,239 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 04:18:47,239 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 04:18:47,240 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-26 04:18:47,240 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:18:47,240 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 04:18:47,240 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 04:18:47,240 INFO L133 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-2013CAV-Introduction-alloca.i_Iteration1_Lasso [2020-10-26 04:18:47,240 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 04:18:47,241 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 04:18:47,267 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:18:47,276 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:18:47,279 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:18:47,283 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:18:47,488 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 42 [2020-10-26 04:18:47,583 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:18:47,599 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:18:47,603 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:18:47,608 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:18:47,614 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:18:47,618 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:18:47,624 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:18:48,022 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 04:18:48,028 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-26 04:18:48,034 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 [2020-10-26 04:18:48,036 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:18:48,037 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:18:48,037 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:18:48,038 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:18:48,038 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:18:48,040 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:18:48,040 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 04:18:48,047 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:18:48,085 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 [2020-10-26 04:18:48,087 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:18:48,087 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:18:48,087 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:18:48,087 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:18:48,088 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:18:48,088 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:18:48,089 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:18:48,091 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-26 04:18:48,120 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 [2020-10-26 04:18:48,123 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:18:48,123 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:18:48,123 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:18:48,123 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:18:48,123 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:18:48,125 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:18:48,125 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 04:18:48,127 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:18:48,167 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 [2020-10-26 04:18:48,169 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:18:48,170 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:18:48,170 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:18:48,170 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:18:48,183 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 04:18:48,183 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-26 04:18:48,198 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:18:48,241 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 Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:18:48,244 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:18:48,244 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:18:48,245 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:18:48,245 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:18:48,249 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 04:18:48,250 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-26 04:18:48,257 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:18:48,296 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 [2020-10-26 04:18:48,297 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:18:48,298 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:18:48,298 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:18:48,298 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:18:48,303 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 04:18:48,303 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:18:48,314 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:18:48,355 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 [2020-10-26 04:18:48,357 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:18:48,357 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:18:48,357 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:18:48,357 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:18:48,360 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 04:18:48,360 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:18:48,365 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:18:48,404 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 [2020-10-26 04:18:48,406 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:18:48,407 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:18:48,407 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:18:48,407 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:18:48,412 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 04:18:48,412 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:18:48,431 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-26 04:18:48,455 INFO L443 ModelExtractionUtils]: Simplification made 6 calls to the SMT solver. [2020-10-26 04:18:48,455 INFO L444 ModelExtractionUtils]: 2 out of 10 variables were initially zero. Simplification set additionally 4 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:18:48,463 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:18:48,468 INFO L438 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2020-10-26 04:18:48,468 INFO L510 LassoAnalysis]: Proved termination. [2020-10-26 04:18:48,469 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select (select #memory_int ULTIMATE.start_main_~x~0.base) ULTIMATE.start_main_~x~0.offset)_1) = 1*v_rep(select (select #memory_int ULTIMATE.start_main_~x~0.base) ULTIMATE.start_main_~x~0.offset)_1 Supporting invariants [1*v_rep(select (select #memory_int ULTIMATE.start_main_~y~0.base) ULTIMATE.start_main_~y~0.offset)_1 - 1 >= 0] [2020-10-26 04:18:48,550 INFO L297 tatePredicateManager]: 10 out of 12 supporting invariants were superfluous and have been removed [2020-10-26 04:18:48,562 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-26 04:18:48,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:18:48,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:18:48,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-26 04:18:48,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:18:48,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:18:48,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-26 04:18:48,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:18:48,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:18:48,690 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 [2020-10-26 04:18:48,691 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 3 states. [2020-10-26 04:18:48,768 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states.. Second operand 3 states. Result 18 states and 20 transitions. Complement of second has 7 states. [2020-10-26 04:18:48,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-10-26 04:18:48,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-26 04:18:48,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 12 transitions. [2020-10-26 04:18:48,773 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 2 letters. Loop has 2 letters. [2020-10-26 04:18:48,774 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:18:48,774 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 4 letters. Loop has 2 letters. [2020-10-26 04:18:48,774 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:18:48,774 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 2 letters. Loop has 4 letters. [2020-10-26 04:18:48,775 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:18:48,776 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 18 states and 20 transitions. [2020-10-26 04:18:48,778 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-26 04:18:48,781 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 18 states to 0 states and 0 transitions. [2020-10-26 04:18:48,782 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-10-26 04:18:48,782 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-10-26 04:18:48,783 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-10-26 04:18:48,783 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-26 04:18:48,783 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 04:18:48,784 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 04:18:48,784 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 04:18:48,784 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-10-26 04:18:48,784 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-10-26 04:18:48,784 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-26 04:18:48,784 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-10-26 04:18:48,791 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 26.10 04:18:48 BoogieIcfgContainer [2020-10-26 04:18:48,791 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-10-26 04:18:48,792 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-26 04:18:48,792 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-26 04:18:48,792 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-26 04:18:48,793 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 04:18:46" (3/4) ... [2020-10-26 04:18:48,796 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-26 04:18:48,797 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-26 04:18:48,799 INFO L168 Benchmark]: Toolchain (without parser) took 3487.05 ms. Allocated memory was 50.3 MB in the beginning and 81.8 MB in the end (delta: 31.5 MB). Free memory was 26.2 MB in the beginning and 34.9 MB in the end (delta: -8.6 MB). Peak memory consumption was 23.0 MB. Max. memory is 16.1 GB. [2020-10-26 04:18:48,799 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 50.3 MB. Free memory is still 32.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 04:18:48,800 INFO L168 Benchmark]: CACSL2BoogieTranslator took 605.33 ms. Allocated memory was 50.3 MB in the beginning and 67.1 MB in the end (delta: 16.8 MB). Free memory was 25.6 MB in the beginning and 49.3 MB in the end (delta: -23.7 MB). Peak memory consumption was 9.5 MB. Max. memory is 16.1 GB. [2020-10-26 04:18:48,801 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.28 ms. Allocated memory is still 67.1 MB. Free memory was 49.3 MB in the beginning and 47.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-26 04:18:48,802 INFO L168 Benchmark]: Boogie Preprocessor took 26.63 ms. Allocated memory is still 67.1 MB. Free memory was 47.5 MB in the beginning and 46.4 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 04:18:48,802 INFO L168 Benchmark]: RCFGBuilder took 335.51 ms. Allocated memory is still 67.1 MB. Free memory was 46.4 MB in the beginning and 34.4 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-10-26 04:18:48,803 INFO L168 Benchmark]: BuchiAutomizer took 2450.23 ms. Allocated memory was 67.1 MB in the beginning and 81.8 MB in the end (delta: 14.7 MB). Free memory was 34.4 MB in the beginning and 35.5 MB in the end (delta: -1.2 MB). Peak memory consumption was 13.5 MB. Max. memory is 16.1 GB. [2020-10-26 04:18:48,804 INFO L168 Benchmark]: Witness Printer took 4.97 ms. Allocated memory is still 81.8 MB. Free memory was 35.5 MB in the beginning and 34.9 MB in the end (delta: 692.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 04:18:48,809 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 50.3 MB. Free memory is still 32.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 605.33 ms. Allocated memory was 50.3 MB in the beginning and 67.1 MB in the end (delta: 16.8 MB). Free memory was 25.6 MB in the beginning and 49.3 MB in the end (delta: -23.7 MB). Peak memory consumption was 9.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 46.28 ms. Allocated memory is still 67.1 MB. Free memory was 49.3 MB in the beginning and 47.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.63 ms. Allocated memory is still 67.1 MB. Free memory was 47.5 MB in the beginning and 46.4 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 335.51 ms. Allocated memory is still 67.1 MB. Free memory was 46.4 MB in the beginning and 34.4 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 2450.23 ms. Allocated memory was 67.1 MB in the beginning and 81.8 MB in the end (delta: 14.7 MB). Free memory was 34.4 MB in the beginning and 35.5 MB in the end (delta: -1.2 MB). Peak memory consumption was 13.5 MB. Max. memory is 16.1 GB. * Witness Printer took 4.97 ms. Allocated memory is still 81.8 MB. Free memory was 35.5 MB in the beginning and 34.9 MB in the end (delta: 692.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * 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 unknown-#memory_int-unknown[x][x] and consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.3s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 2.0s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. 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: 5 SDtfs, 4 SDslu, 6 SDs, 0 SdLazy, 6 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital200 mio100 ax109 hnf100 lsp88 ukn58 mio100 lsp42 div100 bol100 ite100 ukn100 eq191 hnf88 smp100 dnf100 smp100 tf100 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 41ms VariablesStem: 8 VariablesLoop: 6 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...