./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted-lit/ChawdharyCookGulwaniSagivYang-ESOP2008-aaron1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version f470102c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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-lit/ChawdharyCookGulwaniSagivYang-ESOP2008-aaron1.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 955b266f1a44cd585b006f48fe033847136df099 ............................................................................................................................................................................................................................ 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 0.1.25-f470102 [2019-11-28 20:23:44,419 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 20:23:44,422 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 20:23:44,439 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 20:23:44,439 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 20:23:44,441 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 20:23:44,443 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 20:23:44,452 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 20:23:44,457 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 20:23:44,461 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 20:23:44,462 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 20:23:44,464 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 20:23:44,464 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 20:23:44,467 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 20:23:44,468 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 20:23:44,470 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 20:23:44,471 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 20:23:44,472 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 20:23:44,474 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 20:23:44,478 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 20:23:44,482 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 20:23:44,486 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 20:23:44,487 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 20:23:44,489 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 20:23:44,491 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 20:23:44,492 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 20:23:44,492 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 20:23:44,494 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 20:23:44,494 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 20:23:44,495 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 20:23:44,496 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 20:23:44,496 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 20:23:44,497 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 20:23:44,498 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 20:23:44,500 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 20:23:44,500 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 20:23:44,501 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 20:23:44,501 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 20:23:44,501 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 20:23:44,502 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 20:23:44,504 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 20:23:44,504 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2019-11-28 20:23:44,531 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 20:23:44,531 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 20:23:44,532 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 20:23:44,533 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 20:23:44,533 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 20:23:44,533 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 20:23:44,533 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-28 20:23:44,533 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 20:23:44,535 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 20:23:44,535 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 20:23:44,537 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 20:23:44,537 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 20:23:44,537 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-11-28 20:23:44,538 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 20:23:44,538 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 20:23:44,538 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 20:23:44,539 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 20:23:44,539 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 20:23:44,539 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 20:23:44,540 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 20:23:44,541 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 20:23:44,542 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 20:23:44,543 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 20:23:44,545 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 20:23:44,545 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 20:23:44,545 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 20:23:44,546 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 20:23:44,546 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 20:23:44,546 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> 955b266f1a44cd585b006f48fe033847136df099 [2019-11-28 20:23:44,834 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 20:23:44,855 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 20:23:44,858 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 20:23:44,860 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 20:23:44,861 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 20:23:44,862 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/ChawdharyCookGulwaniSagivYang-ESOP2008-aaron1.c [2019-11-28 20:23:44,932 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57947d718/d14434f0e9564accb97ee5464c1364e3/FLAG7715b0b0c [2019-11-28 20:23:45,382 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 20:23:45,385 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/ChawdharyCookGulwaniSagivYang-ESOP2008-aaron1.c [2019-11-28 20:23:45,393 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57947d718/d14434f0e9564accb97ee5464c1364e3/FLAG7715b0b0c [2019-11-28 20:23:45,789 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57947d718/d14434f0e9564accb97ee5464c1364e3 [2019-11-28 20:23:45,792 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 20:23:45,794 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 20:23:45,795 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 20:23:45,795 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 20:23:45,798 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 20:23:45,799 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:23:45" (1/1) ... [2019-11-28 20:23:45,802 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6af3dfac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:23:45, skipping insertion in model container [2019-11-28 20:23:45,802 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:23:45" (1/1) ... [2019-11-28 20:23:45,810 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 20:23:45,829 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 20:23:45,999 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 20:23:46,005 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 20:23:46,039 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 20:23:46,052 INFO L208 MainTranslator]: Completed translation [2019-11-28 20:23:46,053 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:23:46 WrapperNode [2019-11-28 20:23:46,053 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 20:23:46,054 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 20:23:46,054 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 20:23:46,054 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 20:23:46,062 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:23:46" (1/1) ... [2019-11-28 20:23:46,066 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:23:46" (1/1) ... [2019-11-28 20:23:46,144 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 20:23:46,146 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 20:23:46,146 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 20:23:46,146 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 20:23:46,156 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:23:46" (1/1) ... [2019-11-28 20:23:46,156 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:23:46" (1/1) ... [2019-11-28 20:23:46,162 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:23:46" (1/1) ... [2019-11-28 20:23:46,163 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:23:46" (1/1) ... [2019-11-28 20:23:46,165 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:23:46" (1/1) ... [2019-11-28 20:23:46,172 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:23:46" (1/1) ... [2019-11-28 20:23:46,173 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:23:46" (1/1) ... [2019-11-28 20:23:46,175 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 20:23:46,175 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 20:23:46,175 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 20:23:46,175 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 20:23:46,176 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:23:46" (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 [2019-11-28 20:23:46,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 20:23:46,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 20:23:46,433 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 20:23:46,433 INFO L287 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-28 20:23:46,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:23:46 BoogieIcfgContainer [2019-11-28 20:23:46,435 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 20:23:46,436 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 20:23:46,436 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 20:23:46,440 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 20:23:46,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 08:23:45" (1/3) ... [2019-11-28 20:23:46,441 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17b322ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:23:46, skipping insertion in model container [2019-11-28 20:23:46,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:23:46" (2/3) ... [2019-11-28 20:23:46,442 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17b322ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:23:46, skipping insertion in model container [2019-11-28 20:23:46,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:23:46" (3/3) ... [2019-11-28 20:23:46,444 INFO L109 eAbstractionObserver]: Analyzing ICFG ChawdharyCookGulwaniSagivYang-ESOP2008-aaron1.c [2019-11-28 20:23:46,455 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 20:23:46,464 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2019-11-28 20:23:46,483 INFO L249 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2019-11-28 20:23:46,513 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 20:23:46,513 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 20:23:46,514 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 20:23:46,514 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 20:23:46,515 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 20:23:46,515 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 20:23:46,515 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 20:23:46,516 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 20:23:46,538 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2019-11-28 20:23:46,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-28 20:23:46,546 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:23:46,547 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-28 20:23:46,548 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:23:46,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:23:46,555 INFO L82 PathProgramCache]: Analyzing trace with hash 29863588, now seen corresponding path program 1 times [2019-11-28 20:23:46,565 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:23:46,566 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593228490] [2019-11-28 20:23:46,566 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:23:46,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:23:46,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:23:46,705 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:23:46,706 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 20:23:46,723 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 08:23:46 BoogieIcfgContainer [2019-11-28 20:23:46,724 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 20:23:46,724 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 20:23:46,724 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 20:23:46,724 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 20:23:46,725 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:23:46" (3/4) ... [2019-11-28 20:23:46,728 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-28 20:23:46,767 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 20:23:46,767 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 20:23:46,770 INFO L168 Benchmark]: Toolchain (without parser) took 975.21 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.9 MB). Free memory was 952.3 MB in the beginning and 1.1 GB in the end (delta: -154.7 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 20:23:46,770 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 20:23:46,771 INFO L168 Benchmark]: CACSL2BoogieTranslator took 258.28 ms. Allocated memory is still 1.0 GB. Free memory was 952.3 MB in the beginning and 941.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-28 20:23:46,772 INFO L168 Benchmark]: Boogie Procedure Inliner took 91.97 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.9 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -204.1 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. [2019-11-28 20:23:46,773 INFO L168 Benchmark]: Boogie Preprocessor took 28.93 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2019-11-28 20:23:46,774 INFO L168 Benchmark]: RCFGBuilder took 260.11 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.1 MB). Peak memory consumption was 19.1 MB. Max. memory is 11.5 GB. [2019-11-28 20:23:46,775 INFO L168 Benchmark]: TraceAbstraction took 287.59 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2019-11-28 20:23:46,775 INFO L168 Benchmark]: Witness Printer took 43.27 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2019-11-28 20:23:46,780 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 258.28 ms. Allocated memory is still 1.0 GB. Free memory was 952.3 MB in the beginning and 941.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 91.97 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.9 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -204.1 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 28.93 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. * RCFGBuilder took 260.11 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.1 MB). Peak memory consumption was 19.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 287.59 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. * Witness Printer took 43.27 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 22]: integer overflow possible integer overflow possible We found a FailurePath: [L14] int i, j, an, bn; [L15] i = __VERIFIER_nondet_int() [L16] j = __VERIFIER_nondet_int() [L17] an = __VERIFIER_nondet_int() [L18] bn = __VERIFIER_nondet_int() [L19] COND TRUE (an >= i && bn >= j) || (an >= i && bn <= j) || (an <= i && bn >= j) [L20] COND TRUE an >= i && bn >= j [L21] COND TRUE __VERIFIER_nondet_int() != 0 [L22] j + 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 26 locations, 8 error locations. Result: UNSAFE, OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred 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, 5 NumberOfCodeBlocks, 5 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, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...