./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/2Nested-2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d33a68-a347-4d07-bba6-25eef0c2646c/bin/uautomizer-Z5i5R5N3CC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d33a68-a347-4d07-bba6-25eef0c2646c/bin/uautomizer-Z5i5R5N3CC/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d33a68-a347-4d07-bba6-25eef0c2646c/bin/uautomizer-Z5i5R5N3CC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d33a68-a347-4d07-bba6-25eef0c2646c/bin/uautomizer-Z5i5R5N3CC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted/2Nested-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d33a68-a347-4d07-bba6-25eef0c2646c/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d33a68-a347-4d07-bba6-25eef0c2646c/bin/uautomizer-Z5i5R5N3CC --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 4143c9f7038c4b8b5babb8095ecf96c00e7adcf9 ............................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW) --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 00:29:59,304 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 00:29:59,308 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 00:29:59,356 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 00:29:59,357 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 00:29:59,362 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 00:29:59,365 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 00:29:59,369 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 00:29:59,372 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 00:29:59,378 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 00:29:59,379 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 00:29:59,380 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 00:29:59,381 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 00:29:59,384 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 00:29:59,385 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 00:29:59,387 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 00:29:59,389 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 00:29:59,393 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 00:29:59,395 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 00:29:59,403 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 00:29:59,405 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 00:29:59,406 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 00:29:59,410 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 00:29:59,411 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 00:29:59,420 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 00:29:59,420 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 00:29:59,421 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 00:29:59,423 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 00:29:59,424 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 00:29:59,426 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 00:29:59,426 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 00:29:59,427 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 00:29:59,430 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 00:29:59,431 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 00:29:59,433 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 00:29:59,433 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 00:29:59,434 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 00:29:59,435 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 00:29:59,435 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 00:29:59,436 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 00:29:59,437 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 00:29:59,438 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d33a68-a347-4d07-bba6-25eef0c2646c/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Overflow-64bit-Automizer_Default.epf [2021-10-11 00:29:59,473 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 00:29:59,473 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 00:29:59,475 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 00:29:59,475 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 00:29:59,476 INFO L138 SettingsManager]: * Use SBE=true [2021-10-11 00:29:59,476 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 00:29:59,476 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-11 00:29:59,477 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 00:29:59,477 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 00:29:59,477 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 00:29:59,479 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 00:29:59,479 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 00:29:59,479 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-11 00:29:59,480 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 00:29:59,480 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 00:29:59,480 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 00:29:59,481 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 00:29:59,481 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 00:29:59,481 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 00:29:59,481 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 00:29:59,482 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 00:29:59,482 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 00:29:59,482 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 00:29:59,483 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-11 00:29:59,483 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 00:29:59,483 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 00:29:59,484 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 00:29:59,484 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_f9d33a68-a347-4d07-bba6-25eef0c2646c/bin/uautomizer-Z5i5R5N3CC/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d33a68-a347-4d07-bba6-25eef0c2646c/bin/uautomizer-Z5i5R5N3CC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4143c9f7038c4b8b5babb8095ecf96c00e7adcf9 [2021-10-11 00:29:59,766 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 00:29:59,796 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 00:29:59,800 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 00:29:59,802 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 00:29:59,802 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 00:29:59,803 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d33a68-a347-4d07-bba6-25eef0c2646c/bin/uautomizer-Z5i5R5N3CC/../../sv-benchmarks/c/termination-crafted/2Nested-2.c [2021-10-11 00:29:59,866 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d33a68-a347-4d07-bba6-25eef0c2646c/bin/uautomizer-Z5i5R5N3CC/data/1f0f1a5ae/eb438cf25bba492fb5241ad873dacb4d/FLAGf0a86259f [2021-10-11 00:30:00,357 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 00:30:00,358 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d33a68-a347-4d07-bba6-25eef0c2646c/sv-benchmarks/c/termination-crafted/2Nested-2.c [2021-10-11 00:30:00,371 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d33a68-a347-4d07-bba6-25eef0c2646c/bin/uautomizer-Z5i5R5N3CC/data/1f0f1a5ae/eb438cf25bba492fb5241ad873dacb4d/FLAGf0a86259f [2021-10-11 00:30:00,726 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d33a68-a347-4d07-bba6-25eef0c2646c/bin/uautomizer-Z5i5R5N3CC/data/1f0f1a5ae/eb438cf25bba492fb5241ad873dacb4d [2021-10-11 00:30:00,729 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 00:30:00,731 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 00:30:00,732 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 00:30:00,733 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 00:30:00,736 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 00:30:00,737 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:30:00" (1/1) ... [2021-10-11 00:30:00,739 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f95a89b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:30:00, skipping insertion in model container [2021-10-11 00:30:00,739 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:30:00" (1/1) ... [2021-10-11 00:30:00,747 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 00:30:00,759 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 00:30:00,884 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:30:00,888 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 00:30:00,901 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:30:00,912 INFO L208 MainTranslator]: Completed translation [2021-10-11 00:30:00,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:30:00 WrapperNode [2021-10-11 00:30:00,913 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 00:30:00,914 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 00:30:00,915 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 00:30:00,915 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 00:30:00,923 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:30:00" (1/1) ... [2021-10-11 00:30:00,928 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:30:00" (1/1) ... [2021-10-11 00:30:00,944 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 00:30:00,945 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 00:30:00,946 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 00:30:00,946 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 00:30:00,954 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:30:00" (1/1) ... [2021-10-11 00:30:00,955 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:30:00" (1/1) ... [2021-10-11 00:30:00,955 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:30:00" (1/1) ... [2021-10-11 00:30:00,956 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:30:00" (1/1) ... [2021-10-11 00:30:00,958 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:30:00" (1/1) ... [2021-10-11 00:30:00,961 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:30:00" (1/1) ... [2021-10-11 00:30:00,962 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:30:00" (1/1) ... [2021-10-11 00:30:00,964 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 00:30:00,965 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 00:30:00,965 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 00:30:00,965 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 00:30:00,966 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:30:00" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d33a68-a347-4d07-bba6-25eef0c2646c/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 00:30:01,076 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 00:30:01,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 00:30:01,231 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 00:30:01,232 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-11 00:30:01,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:30:01 BoogieIcfgContainer [2021-10-11 00:30:01,233 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 00:30:01,235 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 00:30:01,236 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 00:30:01,239 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 00:30:01,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 12:30:00" (1/3) ... [2021-10-11 00:30:01,240 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10ac6a4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:30:01, skipping insertion in model container [2021-10-11 00:30:01,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:30:00" (2/3) ... [2021-10-11 00:30:01,241 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10ac6a4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:30:01, skipping insertion in model container [2021-10-11 00:30:01,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:30:01" (3/3) ... [2021-10-11 00:30:01,243 INFO L111 eAbstractionObserver]: Analyzing ICFG 2Nested-2.c [2021-10-11 00:30:01,257 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 00:30:01,260 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2021-10-11 00:30:01,272 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-11 00:30:01,305 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 00:30:01,305 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 00:30:01,306 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 00:30:01,306 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 00:30:01,306 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 00:30:01,306 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 00:30:01,306 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 00:30:01,306 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 00:30:01,317 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2021-10-11 00:30:01,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-11 00:30:01,322 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:30:01,322 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-11 00:30:01,323 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 00:30:01,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:30:01,329 INFO L82 PathProgramCache]: Analyzing trace with hash 31073, now seen corresponding path program 1 times [2021-10-11 00:30:01,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:30:01,338 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708724747] [2021-10-11 00:30:01,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:30:01,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:30:01,415 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:30:01,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:30:01,425 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:30:01,441 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:30:01,441 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 00:30:01,442 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 00:30:01,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 12:30:01 BoogieIcfgContainer [2021-10-11 00:30:01,457 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 00:30:01,457 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 00:30:01,457 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 00:30:01,458 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 00:30:01,458 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:30:01" (3/4) ... [2021-10-11 00:30:01,460 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-11 00:30:01,494 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d33a68-a347-4d07-bba6-25eef0c2646c/bin/uautomizer-Z5i5R5N3CC/witness.graphml [2021-10-11 00:30:01,494 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 00:30:01,496 INFO L168 Benchmark]: Toolchain (without parser) took 764.65 ms. Allocated memory is still 92.3 MB. Free memory was 62.8 MB in the beginning and 54.9 MB in the end (delta: 8.0 MB). Peak memory consumption was 10.8 MB. Max. memory is 16.1 GB. [2021-10-11 00:30:01,497 INFO L168 Benchmark]: CDTParser took 0.62 ms. Allocated memory is still 71.3 MB. Free memory is still 48.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:30:01,498 INFO L168 Benchmark]: CACSL2BoogieTranslator took 181.06 ms. Allocated memory is still 92.3 MB. Free memory was 62.6 MB in the beginning and 54.1 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 00:30:01,499 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.31 ms. Allocated memory is still 92.3 MB. Free memory was 54.1 MB in the beginning and 52.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:30:01,499 INFO L168 Benchmark]: Boogie Preprocessor took 18.50 ms. Allocated memory is still 92.3 MB. Free memory was 52.7 MB in the beginning and 51.8 MB in the end (delta: 880.5 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:30:01,500 INFO L168 Benchmark]: RCFGBuilder took 269.01 ms. Allocated memory is still 92.3 MB. Free memory was 51.8 MB in the beginning and 67.4 MB in the end (delta: -15.6 MB). Peak memory consumption was 10.8 MB. Max. memory is 16.1 GB. [2021-10-11 00:30:01,501 INFO L168 Benchmark]: TraceAbstraction took 221.41 ms. Allocated memory is still 92.3 MB. Free memory was 67.0 MB in the beginning and 56.5 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-11 00:30:01,502 INFO L168 Benchmark]: Witness Printer took 36.93 ms. Allocated memory is still 92.3 MB. Free memory was 56.5 MB in the beginning and 54.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:30:01,507 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.62 ms. Allocated memory is still 71.3 MB. Free memory is still 48.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 181.06 ms. Allocated memory is still 92.3 MB. Free memory was 62.6 MB in the beginning and 54.1 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 30.31 ms. Allocated memory is still 92.3 MB. Free memory was 54.1 MB in the beginning and 52.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 18.50 ms. Allocated memory is still 92.3 MB. Free memory was 52.7 MB in the beginning and 51.8 MB in the end (delta: 880.5 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 269.01 ms. Allocated memory is still 92.3 MB. Free memory was 51.8 MB in the beginning and 67.4 MB in the end (delta: -15.6 MB). Peak memory consumption was 10.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 221.41 ms. Allocated memory is still 92.3 MB. Free memory was 67.0 MB in the beginning and 56.5 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Witness Printer took 36.93 ms. Allocated memory is still 92.3 MB. Free memory was 56.5 MB in the beginning and 54.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 20]: integer overflow possible integer overflow possible We found a FailurePath: [L16] int x, y; [L17] x = __VERIFIER_nondet_int() [L18] y = __VERIFIER_nondet_int() [L19] COND TRUE x >= 0 [L20] x + y - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...