./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 54858612 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/termination-crafted/2Nested-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(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 0.2.0-5485861 [2020-10-26 04:02:08,302 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 04:02:08,305 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 04:02:08,347 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 04:02:08,347 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 04:02:08,349 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 04:02:08,351 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 04:02:08,354 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 04:02:08,356 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 04:02:08,358 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 04:02:08,359 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 04:02:08,361 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 04:02:08,362 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 04:02:08,363 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 04:02:08,365 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 04:02:08,367 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 04:02:08,368 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 04:02:08,369 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 04:02:08,372 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 04:02:08,374 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 04:02:08,376 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 04:02:08,378 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 04:02:08,380 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 04:02:08,381 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 04:02:08,384 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 04:02:08,385 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 04:02:08,385 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 04:02:08,386 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 04:02:08,387 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 04:02:08,388 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 04:02:08,389 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 04:02:08,390 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 04:02:08,391 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 04:02:08,392 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 04:02:08,394 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 04:02:08,394 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 04:02:08,395 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 04:02:08,396 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 04:02:08,396 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 04:02:08,397 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 04:02:08,398 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 04:02:08,399 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2020-10-26 04:02:08,428 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 04:02:08,429 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 04:02:08,430 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 04:02:08,431 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 04:02:08,431 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 04:02:08,431 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 04:02:08,432 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-26 04:02:08,432 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 04:02:08,432 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 04:02:08,433 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 04:02:08,433 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 04:02:08,433 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 04:02:08,434 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-10-26 04:02:08,434 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 04:02:08,434 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 04:02:08,434 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 04:02:08,435 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 04:02:08,435 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 04:02:08,435 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 04:02:08,435 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 04:02:08,436 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 04:02:08,436 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 04:02:08,436 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 04:02:08,437 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 04:02:08,437 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 04:02:08,437 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 04:02:08,437 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 04:02:08,438 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 04:02:08,438 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4143c9f7038c4b8b5babb8095ecf96c00e7adcf9 [2020-10-26 04:02:08,822 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 04:02:08,875 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 04:02:08,880 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 04:02:08,881 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 04:02:08,882 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 04:02:08,885 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/2Nested-2.c [2020-10-26 04:02:08,966 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d456ff1a/bfcbd5d0fe1141cab872915e22526c2f/FLAG0bdd05bdc [2020-10-26 04:02:09,538 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 04:02:09,539 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/2Nested-2.c [2020-10-26 04:02:09,546 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d456ff1a/bfcbd5d0fe1141cab872915e22526c2f/FLAG0bdd05bdc [2020-10-26 04:02:09,890 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d456ff1a/bfcbd5d0fe1141cab872915e22526c2f [2020-10-26 04:02:09,893 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 04:02:09,902 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-26 04:02:09,909 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 04:02:09,909 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 04:02:09,914 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 04:02:09,915 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 04:02:09" (1/1) ... [2020-10-26 04:02:09,927 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d3c810b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:02:09, skipping insertion in model container [2020-10-26 04:02:09,928 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 04:02:09" (1/1) ... [2020-10-26 04:02:09,939 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 04:02:09,959 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 04:02:10,159 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 04:02:10,163 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 04:02:10,179 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 04:02:10,194 INFO L208 MainTranslator]: Completed translation [2020-10-26 04:02:10,195 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:02:10 WrapperNode [2020-10-26 04:02:10,195 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 04:02:10,196 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-26 04:02:10,197 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-26 04:02:10,197 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-26 04:02:10,206 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:02:10" (1/1) ... [2020-10-26 04:02:10,212 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:02:10" (1/1) ... [2020-10-26 04:02:10,231 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-26 04:02:10,232 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 04:02:10,232 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 04:02:10,232 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 04:02:10,242 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:02:10" (1/1) ... [2020-10-26 04:02:10,242 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:02:10" (1/1) ... [2020-10-26 04:02:10,243 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:02:10" (1/1) ... [2020-10-26 04:02:10,244 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:02:10" (1/1) ... [2020-10-26 04:02:10,246 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:02:10" (1/1) ... [2020-10-26 04:02:10,250 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:02:10" (1/1) ... [2020-10-26 04:02:10,251 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:02:10" (1/1) ... [2020-10-26 04:02:10,253 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 04:02:10,254 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 04:02:10,254 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 04:02:10,254 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 04:02:10,255 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:02:10" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory: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 [2020-10-26 04:02:10,339 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 04:02:10,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 04:02:10,519 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 04:02:10,519 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-26 04:02:10,521 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 04:02:10 BoogieIcfgContainer [2020-10-26 04:02:10,522 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 04:02:10,523 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 04:02:10,524 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 04:02:10,528 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 04:02:10,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 04:02:09" (1/3) ... [2020-10-26 04:02:10,529 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36802db4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 04:02:10, skipping insertion in model container [2020-10-26 04:02:10,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:02:10" (2/3) ... [2020-10-26 04:02:10,530 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36802db4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 04:02:10, skipping insertion in model container [2020-10-26 04:02:10,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 04:02:10" (3/3) ... [2020-10-26 04:02:10,532 INFO L111 eAbstractionObserver]: Analyzing ICFG 2Nested-2.c [2020-10-26 04:02:10,545 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-26 04:02:10,550 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-10-26 04:02:10,564 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-26 04:02:10,590 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 04:02:10,591 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 04:02:10,591 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-26 04:02:10,591 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 04:02:10,591 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 04:02:10,591 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 04:02:10,591 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 04:02:10,591 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 04:02:10,608 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-10-26 04:02:10,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-26 04:02:10,614 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 04:02:10,615 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-26 04:02:10,616 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-26 04:02:10,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:02:10,623 INFO L82 PathProgramCache]: Analyzing trace with hash 31073, now seen corresponding path program 1 times [2020-10-26 04:02:10,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:02:10,633 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434913574] [2020-10-26 04:02:10,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:02:10,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:02:10,740 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:02:10,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:02:10,751 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:02:10,769 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:02:10,770 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-26 04:02:10,771 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 04:02:10,790 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 04:02:10 BoogieIcfgContainer [2020-10-26 04:02:10,790 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-26 04:02:10,791 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-26 04:02:10,792 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-26 04:02:10,792 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-26 04:02:10,793 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 04:02:10" (3/4) ... [2020-10-26 04:02:10,795 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-26 04:02:10,839 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-26 04:02:10,839 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-26 04:02:10,842 INFO L168 Benchmark]: Toolchain (without parser) took 946.02 ms. Allocated memory is still 48.2 MB. Free memory was 25.5 MB in the beginning and 28.5 MB in the end (delta: -3.0 MB). Peak memory consumption was 572.0 kB. Max. memory is 16.1 GB. [2020-10-26 04:02:10,843 INFO L168 Benchmark]: CDTParser took 0.69 ms. Allocated memory is still 39.8 MB. Free memory was 18.0 MB in the beginning and 18.0 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 04:02:10,844 INFO L168 Benchmark]: CACSL2BoogieTranslator took 286.91 ms. Allocated memory is still 48.2 MB. Free memory was 24.8 MB in the beginning and 27.6 MB in the end (delta: -2.8 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. [2020-10-26 04:02:10,846 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.82 ms. Allocated memory is still 48.2 MB. Free memory was 27.6 MB in the beginning and 26.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-26 04:02:10,847 INFO L168 Benchmark]: Boogie Preprocessor took 21.07 ms. Allocated memory is still 48.2 MB. Free memory was 26.4 MB in the beginning and 25.5 MB in the end (delta: 936.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 04:02:10,848 INFO L168 Benchmark]: RCFGBuilder took 267.95 ms. Allocated memory is still 48.2 MB. Free memory was 25.5 MB in the beginning and 28.6 MB in the end (delta: -3.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 16.1 GB. [2020-10-26 04:02:10,849 INFO L168 Benchmark]: TraceAbstraction took 267.17 ms. Allocated memory is still 48.2 MB. Free memory was 28.3 MB in the beginning and 30.0 MB in the end (delta: -1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 04:02:10,849 INFO L168 Benchmark]: Witness Printer took 47.83 ms. Allocated memory is still 48.2 MB. Free memory was 30.0 MB in the beginning and 28.5 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 04:02:10,854 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.69 ms. Allocated memory is still 39.8 MB. Free memory was 18.0 MB in the beginning and 18.0 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 286.91 ms. Allocated memory is still 48.2 MB. Free memory was 24.8 MB in the beginning and 27.6 MB in the end (delta: -2.8 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 34.82 ms. Allocated memory is still 48.2 MB. Free memory was 27.6 MB in the beginning and 26.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 21.07 ms. Allocated memory is still 48.2 MB. Free memory was 26.4 MB in the beginning and 25.5 MB in the end (delta: 936.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 267.95 ms. Allocated memory is still 48.2 MB. Free memory was 25.5 MB in the beginning and 28.6 MB in the end (delta: -3.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 267.17 ms. Allocated memory is still 48.2 MB. Free memory was 28.3 MB in the beginning and 30.0 MB in the end (delta: -1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 47.83 ms. Allocated memory is still 48.2 MB. Free memory was 30.0 MB in the beginning and 28.5 MB in the end (delta: 1.5 MB). There was no memory consumed. 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...