./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/loops/nec40.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4be41401-848e-4966-8f47-4c66891effb0/bin/uautomizer-AkOaLMaTGY/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4be41401-848e-4966-8f47-4c66891effb0/bin/uautomizer-AkOaLMaTGY/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4be41401-848e-4966-8f47-4c66891effb0/bin/uautomizer-AkOaLMaTGY/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4be41401-848e-4966-8f47-4c66891effb0/bin/uautomizer-AkOaLMaTGY/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/loops/nec40.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4be41401-848e-4966-8f47-4c66891effb0/bin/uautomizer-AkOaLMaTGY/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4be41401-848e-4966-8f47-4c66891effb0/bin/uautomizer-AkOaLMaTGY --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a8ae9bcd5a551c2558190e4ca1b7d8543f9adf38b9d950429bd2292753c8e588 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 08:04:37,470 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 08:04:37,472 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 08:04:37,512 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 08:04:37,512 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 08:04:37,514 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 08:04:37,516 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 08:04:37,519 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 08:04:37,521 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 08:04:37,523 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 08:04:37,524 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 08:04:37,526 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 08:04:37,526 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 08:04:37,528 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 08:04:37,530 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 08:04:37,532 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 08:04:37,533 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 08:04:37,534 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 08:04:37,537 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 08:04:37,540 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 08:04:37,542 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 08:04:37,545 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 08:04:37,547 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 08:04:37,549 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 08:04:37,557 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 08:04:37,565 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 08:04:37,566 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 08:04:37,567 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 08:04:37,568 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 08:04:37,569 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 08:04:37,570 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 08:04:37,571 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 08:04:37,572 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 08:04:37,573 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 08:04:37,575 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 08:04:37,575 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 08:04:37,576 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 08:04:37,577 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 08:04:37,577 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 08:04:37,579 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 08:04:37,580 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 08:04:37,581 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4be41401-848e-4966-8f47-4c66891effb0/bin/uautomizer-AkOaLMaTGY/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-11-07 08:04:37,621 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 08:04:37,623 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 08:04:37,625 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 08:04:37,625 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 08:04:37,627 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 08:04:37,627 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 08:04:37,628 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 08:04:37,628 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-11-07 08:04:37,628 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-11-07 08:04:37,629 INFO L138 SettingsManager]: * Use old map elimination=false [2021-11-07 08:04:37,630 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-11-07 08:04:37,630 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-11-07 08:04:37,631 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-11-07 08:04:37,631 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 08:04:37,631 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 08:04:37,632 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-07 08:04:37,632 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 08:04:37,632 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 08:04:37,632 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 08:04:37,633 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-11-07 08:04:37,633 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-11-07 08:04:37,633 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-11-07 08:04:37,633 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 08:04:37,634 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 08:04:37,634 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-11-07 08:04:37,634 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 08:04:37,636 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-11-07 08:04:37,637 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 08:04:37,637 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 08:04:37,637 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 08:04:37,638 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 08:04:37,638 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 08:04:37,639 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-11-07 08:04:37,640 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_worker_vcloud-master_on_vcloud-master/run_dir_4be41401-848e-4966-8f47-4c66891effb0/bin/uautomizer-AkOaLMaTGY/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4be41401-848e-4966-8f47-4c66891effb0/bin/uautomizer-AkOaLMaTGY Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a8ae9bcd5a551c2558190e4ca1b7d8543f9adf38b9d950429bd2292753c8e588 [2021-11-07 08:04:37,930 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 08:04:37,955 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 08:04:37,958 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 08:04:37,960 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 08:04:37,961 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 08:04:37,962 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4be41401-848e-4966-8f47-4c66891effb0/bin/uautomizer-AkOaLMaTGY/../../sv-benchmarks/c/loops/nec40.c [2021-11-07 08:04:38,037 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4be41401-848e-4966-8f47-4c66891effb0/bin/uautomizer-AkOaLMaTGY/data/51e8ce42a/5e2e266de959494297befb1acea1551a/FLAG4b1864002 [2021-11-07 08:04:38,599 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 08:04:38,600 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4be41401-848e-4966-8f47-4c66891effb0/sv-benchmarks/c/loops/nec40.c [2021-11-07 08:04:38,614 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4be41401-848e-4966-8f47-4c66891effb0/bin/uautomizer-AkOaLMaTGY/data/51e8ce42a/5e2e266de959494297befb1acea1551a/FLAG4b1864002 [2021-11-07 08:04:38,946 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4be41401-848e-4966-8f47-4c66891effb0/bin/uautomizer-AkOaLMaTGY/data/51e8ce42a/5e2e266de959494297befb1acea1551a [2021-11-07 08:04:38,950 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 08:04:38,951 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 08:04:38,954 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 08:04:38,954 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 08:04:38,958 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 08:04:38,959 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:04:38" (1/1) ... [2021-11-07 08:04:38,960 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a5dc558 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:04:38, skipping insertion in model container [2021-11-07 08:04:38,961 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:04:38" (1/1) ... [2021-11-07 08:04:38,970 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 08:04:38,989 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 08:04:39,200 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4be41401-848e-4966-8f47-4c66891effb0/sv-benchmarks/c/loops/nec40.c[317,330] [2021-11-07 08:04:39,216 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 08:04:39,228 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 08:04:39,240 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4be41401-848e-4966-8f47-4c66891effb0/sv-benchmarks/c/loops/nec40.c[317,330] [2021-11-07 08:04:39,245 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 08:04:39,264 INFO L208 MainTranslator]: Completed translation [2021-11-07 08:04:39,265 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:04:39 WrapperNode [2021-11-07 08:04:39,266 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 08:04:39,267 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 08:04:39,268 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 08:04:39,268 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 08:04:39,277 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:04:39" (1/1) ... [2021-11-07 08:04:39,287 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:04:39" (1/1) ... [2021-11-07 08:04:39,310 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 08:04:39,311 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 08:04:39,311 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 08:04:39,311 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 08:04:39,321 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:04:39" (1/1) ... [2021-11-07 08:04:39,322 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:04:39" (1/1) ... [2021-11-07 08:04:39,324 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:04:39" (1/1) ... [2021-11-07 08:04:39,324 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:04:39" (1/1) ... [2021-11-07 08:04:39,331 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:04:39" (1/1) ... [2021-11-07 08:04:39,336 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:04:39" (1/1) ... [2021-11-07 08:04:39,337 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:04:39" (1/1) ... [2021-11-07 08:04:39,340 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 08:04:39,341 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 08:04:39,341 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 08:04:39,342 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 08:04:39,343 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:04:39" (1/1) ... [2021-11-07 08:04:39,356 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:04:39,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4be41401-848e-4966-8f47-4c66891effb0/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:04:39,406 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4be41401-848e-4966-8f47-4c66891effb0/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:04:39,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4be41401-848e-4966-8f47-4c66891effb0/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-11-07 08:04:39,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 08:04:39,476 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 08:04:39,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 08:04:39,477 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 08:04:39,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 08:04:39,477 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 08:04:39,857 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 08:04:39,857 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-11-07 08:04:39,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:04:39 BoogieIcfgContainer [2021-11-07 08:04:39,860 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 08:04:39,861 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-11-07 08:04:39,861 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-11-07 08:04:39,869 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-11-07 08:04:39,877 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-07 08:04:39,877 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 07.11 08:04:38" (1/3) ... [2021-11-07 08:04:39,879 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5907a0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.11 08:04:39, skipping insertion in model container [2021-11-07 08:04:39,879 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-07 08:04:39,879 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:04:39" (2/3) ... [2021-11-07 08:04:39,880 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5907a0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.11 08:04:39, skipping insertion in model container [2021-11-07 08:04:39,880 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-07 08:04:39,880 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:04:39" (3/3) ... [2021-11-07 08:04:39,882 INFO L389 chiAutomizerObserver]: Analyzing ICFG nec40.c [2021-11-07 08:04:39,958 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-11-07 08:04:39,958 INFO L360 BuchiCegarLoop]: Hoare is false [2021-11-07 08:04:39,958 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-11-07 08:04:39,958 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-11-07 08:04:39,959 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-11-07 08:04:39,959 INFO L364 BuchiCegarLoop]: Difference is false [2021-11-07 08:04:39,959 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-11-07 08:04:39,959 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-11-07 08:04:39,980 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:04:40,006 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-11-07 08:04:40,007 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-07 08:04:40,007 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-07 08:04:40,014 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-11-07 08:04:40,015 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-11-07 08:04:40,015 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-11-07 08:04:40,015 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:04:40,019 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-11-07 08:04:40,019 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-07 08:04:40,020 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-07 08:04:40,020 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-11-07 08:04:40,020 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-11-07 08:04:40,029 INFO L791 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(8);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call ~#x~0.base, ~#x~0.offset := #Ultimate.allocOnStack(100);#memory_int := ~initToZeroAtPointerBaseAddress~int(#memory_int, ~#x~0.base);call ~#y~0.base, ~#y~0.offset := #Ultimate.allocOnStack(100);#memory_int := ~initToZeroAtPointerBaseAddress~int(#memory_int, ~#y~0.base);~i~0 := 0;~j~0 := 0;~k~0 := 0; 9#L-1true havoc main_#res;havoc main_#t~nondet7, main_#t~mem9, main_#t~post10, main_#t~mem8, main_#t~mem11;~k~0 := main_#t~nondet7;havoc main_#t~nondet7;~i~0 := 0; 13#L20-3true [2021-11-07 08:04:40,030 INFO L793 eck$LassoCheckResult]: Loop: 13#L20-3true call main_#t~mem8 := read~int(~#x~0.base, ~#x~0.offset + ~i~0, 1); 14#L20-1true assume !!(0 != main_#t~mem8);havoc main_#t~mem8;call main_#t~mem9 := read~int(~#x~0.base, ~#x~0.offset + ~i~0, 1);call write~int(main_#t~mem9, ~#y~0.base, ~#y~0.offset + ~i~0, 1);havoc main_#t~mem9;main_#t~post10 := ~i~0;~i~0 := 1 + main_#t~post10;havoc main_#t~post10; 13#L20-3true [2021-11-07 08:04:40,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:04:40,039 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-11-07 08:04:40,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:04:40,052 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546327498] [2021-11-07 08:04:40,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:04:40,055 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:04:40,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:04:40,231 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 08:04:40,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:04:40,325 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-07 08:04:40,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:04:40,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1190, now seen corresponding path program 1 times [2021-11-07 08:04:40,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:04:40,336 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271161159] [2021-11-07 08:04:40,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:04:40,338 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:04:40,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:04:40,373 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 08:04:40,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:04:40,398 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-07 08:04:40,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:04:40,401 INFO L85 PathProgramCache]: Analyzing trace with hash 925672, now seen corresponding path program 1 times [2021-11-07 08:04:40,401 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:04:40,403 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875512215] [2021-11-07 08:04:40,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:04:40,404 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:04:40,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:04:40,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:04:40,702 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:04:40,703 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875512215] [2021-11-07 08:04:40,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875512215] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:04:40,704 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:04:40,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:04:40,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415647444] [2021-11-07 08:04:40,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:04:40,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 08:04:40,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:04:40,879 INFO L87 Difference]: Start difference. First operand has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 4 states have (on average 1.0) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:04:40,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:04:40,971 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2021-11-07 08:04:40,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 08:04:40,974 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 14 transitions. [2021-11-07 08:04:40,979 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-11-07 08:04:40,982 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 0 states and 0 transitions. [2021-11-07 08:04:40,984 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-11-07 08:04:40,984 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-11-07 08:04:40,985 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-11-07 08:04:40,985 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-07 08:04:40,986 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-07 08:04:40,986 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-07 08:04:40,987 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-07 08:04:40,987 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-11-07 08:04:40,988 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-11-07 08:04:40,988 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-11-07 08:04:40,989 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-11-07 08:04:40,996 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 07.11 08:04:40 BoogieIcfgContainer [2021-11-07 08:04:40,996 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-11-07 08:04:40,997 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 08:04:40,997 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 08:04:40,998 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 08:04:40,999 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:04:39" (3/4) ... [2021-11-07 08:04:41,002 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-07 08:04:41,004 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 08:04:41,008 INFO L168 Benchmark]: Toolchain (without parser) took 2053.04 ms. Allocated memory was 107.0 MB in the beginning and 130.0 MB in the end (delta: 23.1 MB). Free memory was 75.3 MB in the beginning and 93.7 MB in the end (delta: -18.4 MB). Peak memory consumption was 4.1 MB. Max. memory is 16.1 GB. [2021-11-07 08:04:41,009 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 107.0 MB. Free memory is still 60.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 08:04:41,010 INFO L168 Benchmark]: CACSL2BoogieTranslator took 312.60 ms. Allocated memory is still 107.0 MB. Free memory was 75.1 MB in the beginning and 81.5 MB in the end (delta: -6.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 08:04:41,012 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.71 ms. Allocated memory is still 107.0 MB. Free memory was 81.5 MB in the beginning and 80.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 08:04:41,015 INFO L168 Benchmark]: Boogie Preprocessor took 29.72 ms. Allocated memory is still 107.0 MB. Free memory was 80.2 MB in the beginning and 78.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 08:04:41,017 INFO L168 Benchmark]: RCFGBuilder took 518.66 ms. Allocated memory is still 107.0 MB. Free memory was 78.8 MB in the beginning and 68.3 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-07 08:04:41,019 INFO L168 Benchmark]: BuchiAutomizer took 1135.55 ms. Allocated memory was 107.0 MB in the beginning and 130.0 MB in the end (delta: 23.1 MB). Free memory was 68.3 MB in the beginning and 93.7 MB in the end (delta: -25.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 08:04:41,026 INFO L168 Benchmark]: Witness Printer took 6.95 ms. Allocated memory is still 130.0 MB. Free memory is still 93.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 08:04:41,034 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 107.0 MB. Free memory is still 60.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 312.60 ms. Allocated memory is still 107.0 MB. Free memory was 75.1 MB in the beginning and 81.5 MB in the end (delta: -6.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.71 ms. Allocated memory is still 107.0 MB. Free memory was 81.5 MB in the beginning and 80.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 29.72 ms. Allocated memory is still 107.0 MB. Free memory was 80.2 MB in the beginning and 78.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 518.66 ms. Allocated memory is still 107.0 MB. Free memory was 78.8 MB in the beginning and 68.3 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 1135.55 ms. Allocated memory was 107.0 MB in the beginning and 130.0 MB in the end (delta: 23.1 MB). Free memory was 68.3 MB in the beginning and 93.7 MB in the end (delta: -25.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 6.95 ms. Allocated memory is still 130.0 MB. Free memory is still 93.7 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 (1 trivial, 0 deterministic, 0 nondeterministic). 1 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.0s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 0.8s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. 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 [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 10 SDtfs, 21 SDslu, 7 SDs, 0 SdLazy, 10 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc1 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: 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! [2021-11-07 08:04:41,097 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4be41401-848e-4966-8f47-4c66891effb0/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE