./Ultimate.py --spec /storage/repos/svcomp/c/properties/no-overflow.prp --file /storage/repos/svcomp/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex1_false-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0ed9222f Calling Ultimate with: 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 /storage/repos/svcomp/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex1_false-no-overflow.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 d3ded6f4470c26b608997f650ebe66ef1cf6f845 ................................................................................................................................................................................................................................................................................................... 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 0.1.24-0ed9222-m [2019-01-14 01:19:00,263 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-14 01:19:00,265 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-14 01:19:00,284 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-14 01:19:00,285 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-14 01:19:00,287 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-14 01:19:00,288 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-14 01:19:00,291 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-14 01:19:00,294 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-14 01:19:00,296 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-14 01:19:00,299 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-01-14 01:19:00,300 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-01-14 01:19:00,301 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-01-14 01:19:00,304 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-01-14 01:19:00,311 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-01-14 01:19:00,312 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-01-14 01:19:00,316 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-01-14 01:19:00,318 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-01-14 01:19:00,324 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2019-01-14 01:19:00,330 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-01-14 01:19:00,332 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-01-14 01:19:00,335 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-01-14 01:19:00,343 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-01-14 01:19:00,344 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-01-14 01:19:00,344 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-01-14 01:19:00,345 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-01-14 01:19:00,346 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-01-14 01:19:00,350 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-01-14 01:19:00,351 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2019-01-14 01:19:00,355 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-01-14 01:19:00,355 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2019-01-14 01:19:00,355 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-01-14 01:19:00,356 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-01-14 01:19:00,358 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2019-01-14 01:19:00,360 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2019-01-14 01:19:00,361 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2019-01-14 01:19:00,363 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2019-01-14 01:19:00,390 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-14 01:19:00,391 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-14 01:19:00,393 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-14 01:19:00,394 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-14 01:19:00,394 INFO L133 SettingsManager]: * Use SBE=true [2019-01-14 01:19:00,395 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-14 01:19:00,395 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-01-14 01:19:00,396 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-14 01:19:00,396 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-14 01:19:00,396 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-01-14 01:19:00,396 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-14 01:19:00,397 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-01-14 01:19:00,397 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2019-01-14 01:19:00,397 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-01-14 01:19:00,397 INFO L133 SettingsManager]: * Use constant arrays=true [2019-01-14 01:19:00,397 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-01-14 01:19:00,397 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-14 01:19:00,398 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-14 01:19:00,398 INFO L133 SettingsManager]: * To the following directory=./dump/ [2019-01-14 01:19:00,398 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-14 01:19:00,398 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-01-14 01:19:00,398 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-14 01:19:00,399 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-14 01:19:00,399 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-01-14 01:19:00,399 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2019-01-14 01:19:00,399 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-14 01:19:00,399 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-01-14 01:19:00,399 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 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 -> d3ded6f4470c26b608997f650ebe66ef1cf6f845 [2019-01-14 01:19:00,437 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-14 01:19:00,452 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-14 01:19:00,460 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-14 01:19:00,462 INFO L271 PluginConnector]: Initializing CDTParser... [2019-01-14 01:19:00,462 INFO L276 PluginConnector]: CDTParser initialized [2019-01-14 01:19:00,464 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex1_false-no-overflow.c [2019-01-14 01:19:00,544 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/642b642f4/28d40957895a49a5a8999afdd71f2ec2/FLAG84df315a4 [2019-01-14 01:19:00,964 INFO L307 CDTParser]: Found 1 translation units. [2019-01-14 01:19:00,965 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex1_false-no-overflow.c [2019-01-14 01:19:00,971 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/642b642f4/28d40957895a49a5a8999afdd71f2ec2/FLAG84df315a4 [2019-01-14 01:19:01,342 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/642b642f4/28d40957895a49a5a8999afdd71f2ec2 [2019-01-14 01:19:01,345 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-14 01:19:01,346 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-01-14 01:19:01,347 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-01-14 01:19:01,347 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-01-14 01:19:01,351 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2019-01-14 01:19:01,352 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.01 01:19:01" (1/1) ... [2019-01-14 01:19:01,356 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44015316 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 01:19:01, skipping insertion in model container [2019-01-14 01:19:01,356 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.01 01:19:01" (1/1) ... [2019-01-14 01:19:01,364 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-01-14 01:19:01,383 INFO L176 MainTranslator]: Built tables and reachable declarations [2019-01-14 01:19:01,541 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-14 01:19:01,549 INFO L191 MainTranslator]: Completed pre-run [2019-01-14 01:19:01,569 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-14 01:19:01,585 INFO L195 MainTranslator]: Completed translation [2019-01-14 01:19:01,586 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 01:19:01 WrapperNode [2019-01-14 01:19:01,587 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-01-14 01:19:01,589 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-01-14 01:19:01,589 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-01-14 01:19:01,589 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-01-14 01:19:01,599 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 01:19:01" (1/1) ... [2019-01-14 01:19:01,604 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 01:19:01" (1/1) ... [2019-01-14 01:19:01,625 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-01-14 01:19:01,626 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-14 01:19:01,626 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-14 01:19:01,626 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-14 01:19:01,634 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 01:19:01" (1/1) ... [2019-01-14 01:19:01,634 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 01:19:01" (1/1) ... [2019-01-14 01:19:01,635 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 01:19:01" (1/1) ... [2019-01-14 01:19:01,635 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 01:19:01" (1/1) ... [2019-01-14 01:19:01,638 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 01:19:01" (1/1) ... [2019-01-14 01:19:01,640 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 01:19:01" (1/1) ... [2019-01-14 01:19:01,641 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 01:19:01" (1/1) ... [2019-01-14 01:19:01,642 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-14 01:19:01,643 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-14 01:19:01,643 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-14 01:19:01,643 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-14 01:19:01,644 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 01:19:01" (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 [2019-01-14 01:19:01,754 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-14 01:19:01,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-14 01:19:01,754 INFO L130 BoogieDeclarations]: Found specification of procedure r1 [2019-01-14 01:19:01,754 INFO L138 BoogieDeclarations]: Found implementation of procedure r1 [2019-01-14 01:19:02,081 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-14 01:19:02,082 INFO L286 CfgBuilder]: Removed 6 assue(true) statements. [2019-01-14 01:19:02,083 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 01:19:02 BoogieIcfgContainer [2019-01-14 01:19:02,083 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-14 01:19:02,085 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-01-14 01:19:02,085 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-01-14 01:19:02,088 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-01-14 01:19:02,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.01 01:19:01" (1/3) ... [2019-01-14 01:19:02,089 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4331c251 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.01 01:19:02, skipping insertion in model container [2019-01-14 01:19:02,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 01:19:01" (2/3) ... [2019-01-14 01:19:02,090 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4331c251 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.01 01:19:02, skipping insertion in model container [2019-01-14 01:19:02,090 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 01:19:02" (3/3) ... [2019-01-14 01:19:02,092 INFO L112 eAbstractionObserver]: Analyzing ICFG LeeJonesBen-Amram-POPL2001-Ex1_false-no-overflow.c [2019-01-14 01:19:02,100 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-01-14 01:19:02,107 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-01-14 01:19:02,119 INFO L257 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-01-14 01:19:02,145 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2019-01-14 01:19:02,146 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-01-14 01:19:02,146 INFO L383 AbstractCegarLoop]: Hoare is true [2019-01-14 01:19:02,146 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-01-14 01:19:02,146 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-14 01:19:02,146 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-14 01:19:02,146 INFO L387 AbstractCegarLoop]: Difference is false [2019-01-14 01:19:02,147 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-14 01:19:02,147 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-01-14 01:19:02,164 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2019-01-14 01:19:02,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-01-14 01:19:02,171 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 01:19:02,172 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-01-14 01:19:02,175 INFO L423 AbstractCegarLoop]: === Iteration 1 === [r1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, r1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, r1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, r1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, r1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, r1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-01-14 01:19:02,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 01:19:02,180 INFO L82 PathProgramCache]: Analyzing trace with hash 920915409, now seen corresponding path program 1 times [2019-01-14 01:19:02,183 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 01:19:02,183 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 01:19:02,234 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 01:19:02,234 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 01:19:02,234 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 01:19:02,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 01:19:02,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 01:19:02,413 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 01:19:02,414 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-01-14 01:19:02,418 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-01-14 01:19:02,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-01-14 01:19:02,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-01-14 01:19:02,435 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 6 states. [2019-01-14 01:19:02,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 01:19:02,713 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2019-01-14 01:19:02,714 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-01-14 01:19:02,715 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2019-01-14 01:19:02,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 01:19:02,724 INFO L225 Difference]: With dead ends: 31 [2019-01-14 01:19:02,725 INFO L226 Difference]: Without dead ends: 17 [2019-01-14 01:19:02,728 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-01-14 01:19:02,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-01-14 01:19:02,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2019-01-14 01:19:02,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-01-14 01:19:02,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2019-01-14 01:19:02,759 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 6 [2019-01-14 01:19:02,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 01:19:02,760 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2019-01-14 01:19:02,760 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-01-14 01:19:02,760 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2019-01-14 01:19:02,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-01-14 01:19:02,760 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 01:19:02,761 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-01-14 01:19:02,762 INFO L423 AbstractCegarLoop]: === Iteration 2 === [r1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, r1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, r1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, r1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, r1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, r1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-01-14 01:19:02,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 01:19:02,763 INFO L82 PathProgramCache]: Analyzing trace with hash -1516393339, now seen corresponding path program 1 times [2019-01-14 01:19:02,763 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 01:19:02,763 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 01:19:02,765 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 01:19:02,765 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 01:19:02,766 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 01:19:02,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 01:19:02,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 01:19:02,952 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 01:19:02,953 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-01-14 01:19:02,955 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-01-14 01:19:02,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-01-14 01:19:02,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-01-14 01:19:02,956 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 5 states. [2019-01-14 01:19:03,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 01:19:03,148 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2019-01-14 01:19:03,149 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-01-14 01:19:03,149 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2019-01-14 01:19:03,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 01:19:03,151 INFO L225 Difference]: With dead ends: 31 [2019-01-14 01:19:03,151 INFO L226 Difference]: Without dead ends: 29 [2019-01-14 01:19:03,152 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-01-14 01:19:03,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-01-14 01:19:03,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 23. [2019-01-14 01:19:03,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-01-14 01:19:03,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2019-01-14 01:19:03,159 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 7 [2019-01-14 01:19:03,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 01:19:03,160 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2019-01-14 01:19:03,160 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-01-14 01:19:03,160 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2019-01-14 01:19:03,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-01-14 01:19:03,161 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 01:19:03,162 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-01-14 01:19:03,162 INFO L423 AbstractCegarLoop]: === Iteration 3 === [r1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, r1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, r1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, r1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, r1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, r1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-01-14 01:19:03,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 01:19:03,162 INFO L82 PathProgramCache]: Analyzing trace with hash 236446803, now seen corresponding path program 1 times [2019-01-14 01:19:03,163 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 01:19:03,163 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 01:19:03,164 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 01:19:03,165 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 01:19:03,165 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 01:19:03,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 01:19:03,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 01:19:03,207 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2019-01-14 01:19:03,226 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.01 01:19:03 BoogieIcfgContainer [2019-01-14 01:19:03,227 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-01-14 01:19:03,227 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-01-14 01:19:03,227 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-01-14 01:19:03,227 INFO L276 PluginConnector]: Witness Printer initialized [2019-01-14 01:19:03,228 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 01:19:02" (3/4) ... [2019-01-14 01:19:03,230 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2019-01-14 01:19:03,269 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-01-14 01:19:03,269 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-01-14 01:19:03,270 INFO L168 Benchmark]: Toolchain (without parser) took 1924.36 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.2 MB). Free memory was 951.4 MB in the beginning and 1.1 GB in the end (delta: -112.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 11.5 GB. [2019-01-14 01:19:03,271 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-14 01:19:03,272 INFO L168 Benchmark]: CACSL2BoogieTranslator took 240.84 ms. Allocated memory is still 1.0 GB. Free memory was 951.4 MB in the beginning and 940.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-01-14 01:19:03,273 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.06 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-14 01:19:03,273 INFO L168 Benchmark]: Boogie Preprocessor took 16.68 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-14 01:19:03,274 INFO L168 Benchmark]: RCFGBuilder took 440.43 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.2 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -171.0 MB). Peak memory consumption was 24.8 MB. Max. memory is 11.5 GB. [2019-01-14 01:19:03,275 INFO L168 Benchmark]: TraceAbstraction took 1142.24 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: 48.1 MB). Peak memory consumption was 48.1 MB. Max. memory is 11.5 GB. [2019-01-14 01:19:03,276 INFO L168 Benchmark]: Witness Printer took 41.77 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-14 01:19:03,280 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 240.84 ms. Allocated memory is still 1.0 GB. Free memory was 951.4 MB in the beginning and 940.6 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 37.06 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 16.68 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 440.43 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.2 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -171.0 MB). Peak memory consumption was 24.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1142.24 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: 48.1 MB). Peak memory consumption was 48.1 MB. Max. memory is 11.5 GB. * Witness Printer took 41.77 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 17]: integer overflow possible integer overflow possible We found a FailurePath: [L26] int ls = __VERIFIER_nondet_int(); [L27] COND TRUE ls >= 0 [L22] CALL r1(ls,0) VAL [\old(a)=0, \old(ls)=2147483647] [L14] COND FALSE !(ls == 0) VAL [\old(a)=0, \old(ls)=2147483647, a=0, ls=2147483647] [L17] ls-1 VAL [\old(a)=0, \old(ls)=2147483647, a=0, ls=2147483647] [L17] ls+1 VAL [\old(a)=0, \old(ls)=2147483647, a=0, ls=2147483647] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 27 locations, 6 error locations. UNSAFE Result, 1.0s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 19 SDtfs, 61 SDslu, 50 SDs, 0 SdLazy, 96 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 6 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 171 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...