./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex1.02.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8d31f386 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-lit/ChenFlurMukhopadhyay-SAS2012-Ex1.02.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 f7a9b9f6f441a79f9d4bea5933ea301694cdf5e5 ................................................................................................................................................................................................................................ 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 0.2.1-wip.dd.multireach-323-8d31f38 [2021-07-06 15:08:18,413 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-06 15:08:18,417 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-06 15:08:18,439 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-06 15:08:18,444 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-06 15:08:18,445 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-06 15:08:18,447 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-06 15:08:18,450 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-06 15:08:18,453 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-06 15:08:18,454 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-06 15:08:18,454 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-06 15:08:18,455 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-06 15:08:18,457 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-06 15:08:18,459 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-06 15:08:18,460 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-06 15:08:18,461 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-06 15:08:18,462 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-06 15:08:18,466 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-06 15:08:18,467 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-06 15:08:18,471 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-06 15:08:18,473 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-06 15:08:18,474 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-06 15:08:18,475 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-06 15:08:18,475 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-06 15:08:18,477 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-06 15:08:18,477 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-06 15:08:18,477 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-06 15:08:18,478 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-06 15:08:18,478 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-06 15:08:18,479 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-06 15:08:18,479 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-06 15:08:18,479 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-06 15:08:18,480 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-06 15:08:18,480 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-06 15:08:18,482 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-06 15:08:18,482 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-06 15:08:18,483 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-06 15:08:18,483 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-06 15:08:18,484 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-06 15:08:18,484 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-06 15:08:18,485 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-06 15:08:18,486 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2021-07-06 15:08:18,509 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-06 15:08:18,511 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-06 15:08:18,512 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-06 15:08:18,513 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-06 15:08:18,513 INFO L138 SettingsManager]: * Use SBE=true [2021-07-06 15:08:18,513 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-06 15:08:18,513 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-07-06 15:08:18,514 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-06 15:08:18,514 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-06 15:08:18,514 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-06 15:08:18,515 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-06 15:08:18,515 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-06 15:08:18,515 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-07-06 15:08:18,515 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-06 15:08:18,515 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-06 15:08:18,515 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-06 15:08:18,515 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-06 15:08:18,516 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-06 15:08:18,516 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-06 15:08:18,516 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-06 15:08:18,516 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-06 15:08:18,516 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-06 15:08:18,516 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-06 15:08:18,517 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-06 15:08:18,517 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-06 15:08:18,517 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-06 15:08:18,517 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-07-06 15:08:18,517 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f7a9b9f6f441a79f9d4bea5933ea301694cdf5e5 [2021-07-06 15:08:18,773 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-06 15:08:18,795 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-06 15:08:18,797 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-06 15:08:18,798 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-06 15:08:18,799 INFO L275 PluginConnector]: CDTParser initialized [2021-07-06 15:08:18,799 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex1.02.c [2021-07-06 15:08:18,842 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1fa81fa4b/b52f71b6427a40f0b87aff8670af35d0/FLAGa58ee5d1f [2021-07-06 15:08:19,188 INFO L306 CDTParser]: Found 1 translation units. [2021-07-06 15:08:19,189 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex1.02.c [2021-07-06 15:08:19,192 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1fa81fa4b/b52f71b6427a40f0b87aff8670af35d0/FLAGa58ee5d1f [2021-07-06 15:08:19,200 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1fa81fa4b/b52f71b6427a40f0b87aff8670af35d0 [2021-07-06 15:08:19,202 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-06 15:08:19,203 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-07-06 15:08:19,204 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-06 15:08:19,204 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-06 15:08:19,210 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-06 15:08:19,211 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 03:08:19" (1/1) ... [2021-07-06 15:08:19,211 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fe178e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 03:08:19, skipping insertion in model container [2021-07-06 15:08:19,212 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 03:08:19" (1/1) ... [2021-07-06 15:08:19,218 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-06 15:08:19,230 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-06 15:08:19,305 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-06 15:08:19,308 INFO L203 MainTranslator]: Completed pre-run [2021-07-06 15:08:19,316 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-06 15:08:19,323 INFO L208 MainTranslator]: Completed translation [2021-07-06 15:08:19,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 03:08:19 WrapperNode [2021-07-06 15:08:19,324 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-06 15:08:19,324 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-06 15:08:19,325 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-06 15:08:19,325 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-06 15:08:19,329 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 03:08:19" (1/1) ... [2021-07-06 15:08:19,332 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 03:08:19" (1/1) ... [2021-07-06 15:08:19,344 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-06 15:08:19,344 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-06 15:08:19,346 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-06 15:08:19,346 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-06 15:08:19,351 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 03:08:19" (1/1) ... [2021-07-06 15:08:19,351 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 03:08:19" (1/1) ... [2021-07-06 15:08:19,352 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 03:08:19" (1/1) ... [2021-07-06 15:08:19,352 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 03:08:19" (1/1) ... [2021-07-06 15:08:19,354 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 03:08:19" (1/1) ... [2021-07-06 15:08:19,356 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 03:08:19" (1/1) ... [2021-07-06 15:08:19,360 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 03:08:19" (1/1) ... [2021-07-06 15:08:19,361 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-06 15:08:19,362 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-06 15:08:19,362 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-06 15:08:19,362 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-06 15:08:19,363 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 03:08:19" (1/1) ... [2021-07-06 15:08:19,392 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-06 15:08:19,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 15:08:19,413 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-07-06 15:08:19,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-07-06 15:08:19,451 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-06 15:08:19,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-06 15:08:19,623 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-06 15:08:19,623 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-07-06 15:08:19,624 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 03:08:19 BoogieIcfgContainer [2021-07-06 15:08:19,624 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-06 15:08:19,625 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-06 15:08:19,626 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-06 15:08:19,627 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-06 15:08:19,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.07 03:08:19" (1/3) ... [2021-07-06 15:08:19,628 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@706d714d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.07 03:08:19, skipping insertion in model container [2021-07-06 15:08:19,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 03:08:19" (2/3) ... [2021-07-06 15:08:19,629 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@706d714d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.07 03:08:19, skipping insertion in model container [2021-07-06 15:08:19,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 03:08:19" (3/3) ... [2021-07-06 15:08:19,630 INFO L111 eAbstractionObserver]: Analyzing ICFG ChenFlurMukhopadhyay-SAS2012-Ex1.02.c [2021-07-06 15:08:19,634 INFO L198 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-06 15:08:19,635 INFO L158 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-07-06 15:08:19,670 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW ======== [2021-07-06 15:08:19,677 INFO L329 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mLimitAnalysisTime=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-07-06 15:08:19,677 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-06 15:08:19,690 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 15 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 15:08:19,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-07-06 15:08:19,693 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 15:08:19,694 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-07-06 15:08:19,694 INFO L374 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-07-06 15:08:19,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 15:08:19,699 INFO L82 PathProgramCache]: Analyzing trace with hash 959367, now seen corresponding path program 1 times [2021-07-06 15:08:19,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 15:08:19,705 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991777995] [2021-07-06 15:08:19,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 15:08:19,706 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 15:08:19,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 15:08:19,770 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 15:08:19,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 15:08:19,782 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 15:08:19,796 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 15:08:19,797 INFO L639 BasicCegarLoop]: Counterexample is feasible [2021-07-06 15:08:19,800 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-06 15:08:19,800 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-06 15:08:19,807 INFO L303 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW was UNSAFE (1/4) [2021-07-06 15:08:19,821 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.07 03:08:19 BoogieIcfgContainer [2021-07-06 15:08:19,821 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-06 15:08:19,823 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-07-06 15:08:19,823 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-07-06 15:08:19,823 INFO L275 PluginConnector]: Witness Printer initialized [2021-07-06 15:08:19,824 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 03:08:19" (3/4) ... [2021-07-06 15:08:19,825 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-07-06 15:08:19,846 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-07-06 15:08:19,846 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-07-06 15:08:19,851 INFO L168 Benchmark]: Toolchain (without parser) took 643.65 ms. Allocated memory was 52.4 MB in the beginning and 67.1 MB in the end (delta: 14.7 MB). Free memory was 30.2 MB in the beginning and 44.2 MB in the end (delta: -14.0 MB). Peak memory consumption was 2.2 MB. Max. memory is 16.1 GB. [2021-07-06 15:08:19,851 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 52.4 MB. Free memory was 34.3 MB in the beginning and 34.3 MB in the end (delta: 63.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-07-06 15:08:19,852 INFO L168 Benchmark]: CACSL2BoogieTranslator took 119.84 ms. Allocated memory is still 52.4 MB. Free memory was 30.0 MB in the beginning and 35.5 MB in the end (delta: -5.5 MB). Peak memory consumption was 7.1 MB. Max. memory is 16.1 GB. [2021-07-06 15:08:19,852 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.47 ms. Allocated memory is still 52.4 MB. Free memory was 35.5 MB in the beginning and 34.2 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-07-06 15:08:19,853 INFO L168 Benchmark]: Boogie Preprocessor took 16.98 ms. Allocated memory is still 52.4 MB. Free memory was 34.2 MB in the beginning and 33.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-06 15:08:19,853 INFO L168 Benchmark]: RCFGBuilder took 262.17 ms. Allocated memory was 52.4 MB in the beginning and 67.1 MB in the end (delta: 14.7 MB). Free memory was 33.1 MB in the beginning and 42.7 MB in the end (delta: -9.6 MB). Peak memory consumption was 4.3 MB. Max. memory is 16.1 GB. [2021-07-06 15:08:19,855 INFO L168 Benchmark]: TraceAbstraction took 195.61 ms. Allocated memory is still 67.1 MB. Free memory was 42.3 MB in the beginning and 46.0 MB in the end (delta: -3.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-07-06 15:08:19,856 INFO L168 Benchmark]: Witness Printer took 23.24 ms. Allocated memory is still 67.1 MB. Free memory was 46.0 MB in the beginning and 44.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-06 15:08:19,860 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 52.4 MB. Free memory was 34.3 MB in the beginning and 34.3 MB in the end (delta: 63.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 119.84 ms. Allocated memory is still 52.4 MB. Free memory was 30.0 MB in the beginning and 35.5 MB in the end (delta: -5.5 MB). Peak memory consumption was 7.1 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 19.47 ms. Allocated memory is still 52.4 MB. Free memory was 35.5 MB in the beginning and 34.2 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 16.98 ms. Allocated memory is still 52.4 MB. Free memory was 34.2 MB in the beginning and 33.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 262.17 ms. Allocated memory was 52.4 MB in the beginning and 67.1 MB in the end (delta: 14.7 MB). Free memory was 33.1 MB in the beginning and 42.7 MB in the end (delta: -9.6 MB). Peak memory consumption was 4.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 195.61 ms. Allocated memory is still 67.1 MB. Free memory was 42.3 MB in the beginning and 46.0 MB in the end (delta: -3.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 23.24 ms. Allocated memory is still 67.1 MB. Free memory was 46.0 MB in the beginning and 44.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 26]: integer overflow possible integer overflow possible We found a FailurePath: [L23] int x, oldx; [L24] x = __VERIFIER_nondet_int() [L25] oldx = __VERIFIER_nondet_int() [L26] x > 0 && x < 100 && x >= 2*oldx + 10 [L26] 2*oldx - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW CFG has 1 procedures, 16 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 138.5ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 6.2ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 9.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 3.4ms SsaConstructionTime, 13.5ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 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! [2021-07-06 15:08:19,888 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...