./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/loops/n.c40.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc5c2db-2f04-49dd-bc23-995c6896f3a0/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc5c2db-2f04-49dd-bc23-995c6896f3a0/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc5c2db-2f04-49dd-bc23-995c6896f3a0/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc5c2db-2f04-49dd-bc23-995c6896f3a0/bin/uautomizer-GMMbpWq8iD/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/loops/n.c40.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc5c2db-2f04-49dd-bc23-995c6896f3a0/bin/uautomizer-GMMbpWq8iD/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc5c2db-2f04-49dd-bc23-995c6896f3a0/bin/uautomizer-GMMbpWq8iD --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 ec147baa41deaa706a3db1972af791532e50c36ff3c23d3d92f8d6bea9417e65 ............................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 23:31:48,044 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:31:48,046 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:31:48,108 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:31:48,109 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:31:48,114 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:31:48,116 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:31:48,121 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:31:48,124 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:31:48,132 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:31:48,133 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:31:48,136 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:31:48,137 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:31:48,141 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:31:48,145 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:31:48,152 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:31:48,154 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:31:48,156 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:31:48,158 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:31:48,166 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:31:48,170 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:31:48,171 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:31:48,175 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:31:48,177 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:31:48,188 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:31:48,189 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:31:48,189 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:31:48,192 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:31:48,192 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:31:48,194 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:31:48,195 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:31:48,196 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:31:48,198 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:31:48,200 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:31:48,202 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:31:48,202 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:31:48,203 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:31:48,203 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:31:48,204 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:31:48,205 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:31:48,206 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:31:48,207 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc5c2db-2f04-49dd-bc23-995c6896f3a0/bin/uautomizer-GMMbpWq8iD/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-10-28 23:31:48,260 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:31:48,261 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:31:48,262 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:31:48,262 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:31:48,263 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:31:48,264 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:31:48,264 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:31:48,264 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-28 23:31:48,264 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-28 23:31:48,265 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-28 23:31:48,266 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-28 23:31:48,266 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-28 23:31:48,267 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-28 23:31:48,267 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:31:48,267 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:31:48,267 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 23:31:48,268 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:31:48,268 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:31:48,268 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:31:48,268 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-28 23:31:48,269 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-28 23:31:48,269 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-28 23:31:48,269 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:31:48,269 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 23:31:48,270 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-28 23:31:48,270 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:31:48,270 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-28 23:31:48,270 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:31:48,271 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:31:48,271 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:31:48,271 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 23:31:48,272 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:31:48,273 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-28 23:31:48,273 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_1fc5c2db-2f04-49dd-bc23-995c6896f3a0/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc5c2db-2f04-49dd-bc23-995c6896f3a0/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ec147baa41deaa706a3db1972af791532e50c36ff3c23d3d92f8d6bea9417e65 [2021-10-28 23:31:48,582 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:31:48,608 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:31:48,612 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:31:48,613 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:31:48,615 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:31:48,616 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc5c2db-2f04-49dd-bc23-995c6896f3a0/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/loops/n.c40.c [2021-10-28 23:31:48,707 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc5c2db-2f04-49dd-bc23-995c6896f3a0/bin/uautomizer-GMMbpWq8iD/data/13e459708/04b313e134b24bbe8f9ee1b20a739dc6/FLAGba10e155b [2021-10-28 23:31:49,239 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:31:49,240 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc5c2db-2f04-49dd-bc23-995c6896f3a0/sv-benchmarks/c/loops/n.c40.c [2021-10-28 23:31:49,251 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc5c2db-2f04-49dd-bc23-995c6896f3a0/bin/uautomizer-GMMbpWq8iD/data/13e459708/04b313e134b24bbe8f9ee1b20a739dc6/FLAGba10e155b [2021-10-28 23:31:49,614 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc5c2db-2f04-49dd-bc23-995c6896f3a0/bin/uautomizer-GMMbpWq8iD/data/13e459708/04b313e134b24bbe8f9ee1b20a739dc6 [2021-10-28 23:31:49,616 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:31:49,618 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 23:31:49,621 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:31:49,621 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:31:49,625 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:31:49,625 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:31:49" (1/1) ... [2021-10-28 23:31:49,627 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@441faecc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:31:49, skipping insertion in model container [2021-10-28 23:31:49,627 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:31:49" (1/1) ... [2021-10-28 23:31:49,634 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:31:49,647 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:31:49,851 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_1fc5c2db-2f04-49dd-bc23-995c6896f3a0/sv-benchmarks/c/loops/n.c40.c[498,511] [2021-10-28 23:31:49,854 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:31:49,869 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:31:49,888 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_1fc5c2db-2f04-49dd-bc23-995c6896f3a0/sv-benchmarks/c/loops/n.c40.c[498,511] [2021-10-28 23:31:49,890 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:31:49,910 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:31:49,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:31:49 WrapperNode [2021-10-28 23:31:49,911 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:31:49,912 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 23:31:49,912 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 23:31:49,912 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 23:31:49,920 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:31:49" (1/1) ... [2021-10-28 23:31:49,928 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:31:49" (1/1) ... [2021-10-28 23:31:49,951 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 23:31:49,952 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:31:49,952 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:31:49,952 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:31:49,960 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:31:49" (1/1) ... [2021-10-28 23:31:49,961 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:31:49" (1/1) ... [2021-10-28 23:31:49,975 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:31:49" (1/1) ... [2021-10-28 23:31:49,975 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:31:49" (1/1) ... [2021-10-28 23:31:49,981 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:31:49" (1/1) ... [2021-10-28 23:31:49,991 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:31:49" (1/1) ... [2021-10-28 23:31:49,999 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:31:49" (1/1) ... [2021-10-28 23:31:50,001 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:31:50,002 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:31:50,003 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:31:50,003 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:31:50,005 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:31:49" (1/1) ... [2021-10-28 23:31:50,012 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:31:50,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc5c2db-2f04-49dd-bc23-995c6896f3a0/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:31:50,041 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc5c2db-2f04-49dd-bc23-995c6896f3a0/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:31:50,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc5c2db-2f04-49dd-bc23-995c6896f3a0/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-28 23:31:50,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 23:31:50,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:31:50,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:31:50,101 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-28 23:31:50,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 23:31:50,101 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:31:50,406 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:31:50,416 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-28 23:31:50,418 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:31:50 BoogieIcfgContainer [2021-10-28 23:31:50,418 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:31:50,419 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-28 23:31:50,420 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-28 23:31:50,423 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-28 23:31:50,424 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 23:31:50,424 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.10 11:31:49" (1/3) ... [2021-10-28 23:31:50,426 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@36cfb768 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 11:31:50, skipping insertion in model container [2021-10-28 23:31:50,426 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 23:31:50,426 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:31:49" (2/3) ... [2021-10-28 23:31:50,427 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@36cfb768 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 11:31:50, skipping insertion in model container [2021-10-28 23:31:50,429 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 23:31:50,429 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:31:50" (3/3) ... [2021-10-28 23:31:50,431 INFO L389 chiAutomizerObserver]: Analyzing ICFG n.c40.c [2021-10-28 23:31:50,531 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-28 23:31:50,531 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-28 23:31:50,531 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-28 23:31:50,531 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-28 23:31:50,532 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-28 23:31:50,532 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-28 23:31:50,532 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-28 23:31:50,532 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-28 23:31:50,549 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 12 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 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) [2021-10-28 23:31:50,584 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-10-28 23:31:50,584 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:31:50,584 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:31:50,590 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 23:31:50,590 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-28 23:31:50,590 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-28 23:31:50,591 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 12 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 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) [2021-10-28 23:31:50,593 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-10-28 23:31:50,593 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:31:50,594 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:31:50,594 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 23:31:50,594 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-28 23:31:50,601 INFO L791 eck$LassoCheckResult]: Stem: 5#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#L14-3true [2021-10-28 23:31:50,602 INFO L793 eck$LassoCheckResult]: Loop: 13#L14-3true call main_#t~mem8 := read~int(~#x~0.base, ~#x~0.offset + ~i~0, 1); 12#L14-1true 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#L14-3true [2021-10-28 23:31:50,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:31:50,613 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-10-28 23:31:50,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:31:50,622 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434997481] [2021-10-28 23:31:50,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:31:50,625 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:31:50,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:31:50,763 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:31:50,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:31:50,841 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:31:50,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:31:50,849 INFO L85 PathProgramCache]: Analyzing trace with hash 1190, now seen corresponding path program 1 times [2021-10-28 23:31:50,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:31:50,850 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067165745] [2021-10-28 23:31:50,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:31:50,851 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:31:50,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:31:50,877 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:31:50,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:31:50,896 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:31:50,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:31:50,900 INFO L85 PathProgramCache]: Analyzing trace with hash 925672, now seen corresponding path program 1 times [2021-10-28 23:31:50,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:31:50,902 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057791094] [2021-10-28 23:31:50,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:31:50,903 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:31:50,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:31:51,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:31:51,182 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:31:51,183 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057791094] [2021-10-28 23:31:51,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057791094] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:31:51,184 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:31:51,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:31:51,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477511180] [2021-10-28 23:31:51,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:31:51,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 23:31:51,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:31:51,349 INFO L87 Difference]: Start difference. First operand has 12 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 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) [2021-10-28 23:31:51,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:31:51,415 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2021-10-28 23:31:51,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:31:51,417 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 12 transitions. [2021-10-28 23:31:51,420 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-28 23:31:51,423 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 0 states and 0 transitions. [2021-10-28 23:31:51,424 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-10-28 23:31:51,424 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-10-28 23:31:51,425 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-10-28 23:31:51,425 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:31:51,426 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 23:31:51,427 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 23:31:51,427 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 23:31:51,427 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-28 23:31:51,428 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-10-28 23:31:51,429 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-28 23:31:51,429 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-10-28 23:31:51,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.10 11:31:51 BoogieIcfgContainer [2021-10-28 23:31:51,436 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-28 23:31:51,436 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:31:51,436 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:31:51,437 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:31:51,438 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:31:50" (3/4) ... [2021-10-28 23:31:51,441 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 23:31:51,441 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:31:51,444 INFO L168 Benchmark]: Toolchain (without parser) took 1824.08 ms. Allocated memory was 104.9 MB in the beginning and 130.0 MB in the end (delta: 25.2 MB). Free memory was 71.5 MB in the beginning and 92.8 MB in the end (delta: -21.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 23:31:51,445 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 104.9 MB. Free memory is still 60.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:31:51,447 INFO L168 Benchmark]: CACSL2BoogieTranslator took 291.03 ms. Allocated memory is still 104.9 MB. Free memory was 71.3 MB in the beginning and 80.7 MB in the end (delta: -9.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 23:31:51,448 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.60 ms. Allocated memory is still 104.9 MB. Free memory was 80.7 MB in the beginning and 79.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:31:51,450 INFO L168 Benchmark]: Boogie Preprocessor took 49.56 ms. Allocated memory is still 104.9 MB. Free memory was 79.0 MB in the beginning and 78.0 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:31:51,451 INFO L168 Benchmark]: RCFGBuilder took 416.56 ms. Allocated memory is still 104.9 MB. Free memory was 78.0 MB in the beginning and 67.6 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 23:31:51,453 INFO L168 Benchmark]: BuchiAutomizer took 1016.25 ms. Allocated memory was 104.9 MB in the beginning and 130.0 MB in the end (delta: 25.2 MB). Free memory was 67.6 MB in the beginning and 92.8 MB in the end (delta: -25.3 MB). Peak memory consumption was 3.0 MB. Max. memory is 16.1 GB. [2021-10-28 23:31:51,458 INFO L168 Benchmark]: Witness Printer took 5.28 ms. Allocated memory is still 130.0 MB. Free memory is still 92.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:31:51,465 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 104.9 MB. Free memory is still 60.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 291.03 ms. Allocated memory is still 104.9 MB. Free memory was 71.3 MB in the beginning and 80.7 MB in the end (delta: -9.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 38.60 ms. Allocated memory is still 104.9 MB. Free memory was 80.7 MB in the beginning and 79.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 49.56 ms. Allocated memory is still 104.9 MB. Free memory was 79.0 MB in the beginning and 78.0 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 416.56 ms. Allocated memory is still 104.9 MB. Free memory was 78.0 MB in the beginning and 67.6 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 1016.25 ms. Allocated memory was 104.9 MB in the beginning and 130.0 MB in the end (delta: 25.2 MB). Free memory was 67.6 MB in the beginning and 92.8 MB in the end (delta: -25.3 MB). Peak memory consumption was 3.0 MB. Max. memory is 16.1 GB. * Witness Printer took 5.28 ms. Allocated memory is still 130.0 MB. Free memory is still 92.8 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 0.9s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 0.7s. 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: 8 SDtfs, 9 SDslu, 5 SDs, 0 SdLazy, 10 SolverSat, 3 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! [2021-10-28 23:31:51,533 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fc5c2db-2f04-49dd-bc23-995c6896f3a0/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...